A device and method for automatically adding a covering agent to a ladle of molten steel

Abstract

The application discloses a device and method for automatically adding covering agent to a steel ladle, which comprises a hopper, an outlet end of the hopper being matched with an open end of the steel ladle, a baffle, one end of the baffle being connected with a refining platform, the other end of the baffle facing the steel ladle and being capable of closing the outlet end of the hopper, a linkage mechanism, the linkage mechanism being arranged between the hopper and the refining platform and / or the steel ladle and being capable of synchronously moving the hopper and the steel ladle, when the steel ladle is away from the refining platform, the hopper and the steel ladle are synchronously moved to completely open the outlet end of the hopper, the hopper and the steel ladle are synchronously moved during feeding, the hopper is gradually unloaded into the steel ladle during the movement through the baffle, and then the covering agent is uniformly added and fully covered.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ladle covering agent adding, and more particularly to a device and method for automatically adding covering agent to a ladle. BACKGROUND

[0002] With the continuous progress of steel production technology, the traditional manual adding of covering agent cannot meet the production demand of high quality and high efficiency. An automatic control system is urgently needed to realize the accurate and uniform addition of covering agent, improve the quality of molten steel, and reduce production cost, which is an important direction for the technical upgrading of the steel industry.

[0003] After LF refining, the heat preservation performance of the molten steel in the ladle is crucial to ensure the casting temperature and the quality of the cast slab, and has always been the focus of the metallurgical industry. After the traditional refining process is completed, the addition of covering agent is usually manually performed by the operators on site. Due to the compact production rhythm, limited refining platform space, and other actual factors, the manual addition of covering agent often cannot ensure the uniform distribution of covering agent in the ladle, which can easily cause the problem of accumulation on one side and exposure of the molten steel on the other side. This not only leads to a decrease in the temperature of the molten steel, affecting the casting quality, but also can exacerbate the oxidation of the molten steel, adversely affecting the subsequent quality control of the molten steel. SUMMARY

[0004] The purpose of the present application is to solve the problem that the existing manual addition of covering agent often cannot ensure the uniform distribution of covering agent in the ladle.

[0005] In order to achieve the above-mentioned purpose, the present application provides a device for automatically adding covering agent to a ladle, comprising:

[0006] a hopper, the outlet end of the hopper being matched with the open end of the ladle;

[0007] a baffle, one end of the baffle being connected with the refining platform, and the other end of the baffle facing the ladle, capable of closing the outlet end of the hopper;

[0008] a linkage mechanism, the linkage mechanism being arranged between the hopper and the refining platform and / or the ladle, capable of synchronously moving the hopper and the ladle;

[0009] When the ladle is away from the refining platform, the hopper and the ladle are synchronously moved to the outlet end of the hopper being completely opened.

[0010] Optionally, a vibration module is arranged on the hopper and / or the baffle.

[0011] Optionally, the linkage mechanism comprises:

[0012] A monitoring module for detecting the motion state of the ladle;

[0013] A driving module disposed on the refining platform for driving the movement of the hopper;

[0014] A limiting module disposed on the refining platform for limiting the stroke of the hopper.

[0015] Optionally, the monitoring module is a displacement sensor disposed on the hopper.

[0016] Optionally, the driving module comprises:

[0017] A driving motor disposed on the refining platform, the driving end of the driving motor being provided with a driving gear;

[0018] A rack, one end of the rack being connected with the hopper, and the other end of the rack being engaged with the driving gear.

[0019] Optionally, the monitoring module comprises:

[0020] A driven rod, one end of the driven rod being slidably connected with the hopper, and the other end of the driven rod being intermittently contacted with the ladle;

[0021] A displacement mechanism disposed on the hopper, the displacement mechanism being used for driving the movement of the driven rod to be intermittently contacted with the ladle.

[0022] Optionally, further comprising a stirring mechanism disposed in the hopper.

[0023] Optionally, the baffle is provided with an extension, the extension being used for synchronously moving the hopper and the ladle for a first safety time length and then starting unloading.

[0024] The present application also provides a method for automatically adding covering agent to a ladle, comprising:

[0025] A hopper is disposed above the ladle, the discharge end of the hopper being matched with the opening end of the ladle;

[0026] A fixed baffle is disposed above the ladle, the baffle being used for closing the discharge end of the hopper;

[0027] The ladle and the hopper are synchronously moved, so that the hopper is gradually opened to unload the ladle;

[0028] After unloading, the hopper is reset to replenish materials.

[0029] Optionally, the synchronous movement of the ladle and the hopper comprises:

[0030] The ladle and the hopper are synchronously moved for a first safety time length, and then the unloading is started;

[0031] After the unloading, the ladle and the hopper are synchronously moved for a second safety time length, and then the hopper starts to reset.

[0032] The application provides a device for automatically adding covering agent to a ladle, which has the advantages that:

[0033] 1. The device for automatically adding covering agent to a ladle synchronously moves the hopper and the ladle during feeding, and gradually unloads the hopper into the ladle through a baffle during the movement, so that the covering agent is evenly added and fully covered.

[0034] 2. The device reduces the burden of employees, and only needs employees to supplement the hopper. Meanwhile, the uniform covering effectively reduces the amount of covering agent, and about 2 bags of covering agent can be reduced per furnace, and a large amount of cost can be saved per year.

[0035] 3. The device adds the covering agent when the ladle moves to the soft-blowing position, and completes the addition of the covering agent after moving to the soft-blowing position, so that the addition time of the covering agent is advanced, and the refining cycle is shortened.

[0036] Other features and advantages of the application will be described in detail in the following specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the several views, and in which:

[0038] Fig. 1 A structure diagram of a device for automatically adding covering agent to a ladle according to embodiment 1 of the application is shown.

[0039] Fig. 2 A structure diagram of a device for automatically adding covering agent to a ladle according to embodiment 2 of the application is shown.

[0040] Explanation of reference signs:

[0041] 1. hopper; 2. baffle; 3. ladle; 4. driving motor; 5. rack; 6. limit switch; 7. displacement sensor; 8. driven rod; 9. displacement mechanism; 10. vibration module. DETAILED DESCRIPTION

[0042] Preferred embodiments of the present application will be described in more detail below. Although the following describes preferred embodiments of the present application, it is to be understood that the present application can be carried out in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0043] As shown in Figs. 1-2 A device for automatically adding covering agent to a ladle, comprising:

[0044] A hopper 1, the outlet end of the hopper 1 is matched with the open end of the ladle 3;

[0045] A baffle 2, one end of the baffle 2 is connected with the refining platform, and the other end of the baffle 2 is towards the ladle 3, and the baffle 2 can close the outlet end of the hopper 1;

[0046] A linkage mechanism, the linkage mechanism is arranged between the hopper 1 and the refining platform and / or the ladle 3, and can make the hopper 1 and the ladle 3 move synchronously;

[0047] When the ladle 3 is away from the refining platform, the hopper 1 and the ladle 3 move synchronously to the outlet end of the hopper 1 is completely opened.

[0048] Specifically, the hopper 1 and the ladle 3 move synchronously during feeding, and the hopper 1 is gradually unloaded into the ladle 3 during movement through the baffle 2, thereby making the covering agent uniform and comprehensive.

[0049] In this embodiment, a vibration module is arranged on the hopper 1 and / or the baffle 2.

[0050] Specifically, the hopper 1 and / or the baffle 2 are vibrated through the vibration module to avoid the covering agent from adhering, thereby making the ingredients uniform.

[0051] Further, the vibration module includes a vibration motor.

[0052] In this embodiment, the linkage mechanism includes:

[0053] A monitoring module, the monitoring module is used to detect the movement state of the ladle 3;

[0054] A driving module, the driving module is arranged on the refining platform and is used to drive the hopper 1 to move;

[0055] A limiting module, the limiting module is arranged on the refining platform and is used to limit the stroke of the hopper 1.

[0056] Specifically, the ladle 3 is monitored through the monitoring module to ensure that the hopper 1 moves synchronously with the ladle 3 in time, the ladle 3 is moved through the driving module, and the movement of the ladle 3 is prevented from being out of range through the limiting module, so that the ladle 3 does not need to continue to move after unloading.

[0057] In the embodiment, the monitoring module is a displacement sensor 7, which is arranged on the hopper 1.

[0058] Specifically, the displacement sensor 7 monitors the position change of the hopper 1 and the ladle 3, and sends a signal when detecting that the ladle 3 moves, so as to make the hopper 1 move synchronously.

[0059] In the embodiment, the driving module comprises:

[0060] a driving motor 4 arranged on the refining platform, and a driving gear arranged at a driving end of the driving motor 4;

[0061] a rack 5, one end of which is connected with the hopper 1, and the other end of which is engaged with the driving gear.

[0062] Specifically, the driving motor 4 drives the driving gear to rotate, so as to drive the rack 5 to reciprocate, thereby realizing the movement of the hopper 1.

[0063] Further, a limit switch 6 is arranged on the rack 5, and the limit switch 6 is triggered when the hopper 1 is completely opened, i.e., after discharging, so as to make the driving motor 4 reverse or delay reverse.

[0064] In the embodiment, the monitoring module comprises:

[0065] a driven rod 8, one end of which is slidably connected with the hopper 1, and the other end of which is intermittently contacted with the ladle 3;

[0066] a displacement mechanism 9 arranged on the hopper 1, which is used to drive the driven rod 8 to move and be intermittently contacted with the ladle 3.

[0067] Specifically, the driven rod 8 makes the ladle 3 drive the hopper 1 to move synchronously, and the displacement mechanism 9 separates the driven rod 8 from the ladle 3 after the hopper 1 discharges, so that the ladle 3 moves alone, and the hopper 1 resets.

[0068] Further, the displacement mechanism 9 is a telescopic motor, a telescopic cylinder or a winch, and the driven rod 8 is L-shaped, and the horizontal part is convenient for compensating and adjusting the distance difference.

[0069] In the embodiment, a stirring mechanism is further arranged in the hopper 1.

[0070] Specifically, the stirring mechanism makes the covering agent in the hopper 1 uniformly distributed, so as to avoid the covering agent accumulated in the hopper 1 in a conical shape, thereby affecting the uniformity of discharging.

[0071] In the embodiment, the baffle 2 is provided with an extension part, which is used to make the hopper 1 and the ladle 3 start discharging after moving synchronously for a first safety time.

[0072] Specifically, the movement speed of the hopper 1 and the ladle 3 is ensured to be consistent through the delayed discharging, so as to avoid the inconsistent speed at the initial movement.

[0073] Embodiment 1

[0074] The monitoring module is a displacement sensor 7, which is arranged on the hopper 1.

[0075] The ladle 3 passes below the hopper 1, the displacement sensor 7 detects that the ladle 3 moves to the position, and then the hopper 1 is synchronously moved through the linkage mechanism, one end of the hopper 1 gradually leaks out the baffle 2, and then the covering agent in the hopper 1 falls into the ladle 3, and the covering agent covers the whole ladle 3 with the expansion of the leakage end of the hopper, so as to ensure the uniform discharging of the covering agent, and at the same time, the synchronous movement with the ladle 3 does not delay the transfer of the ladle 3, and the production process time is saved. When the hopper 1 discharges, the hopper 1 is reset to repeat the operation.

[0076] Embodiment 2

[0077] The monitoring module comprises:

[0078] The driven rod 8 is slidably connected to one end of the hopper 1, and the other end of the driven rod 8 is intermittently in contact with the ladle 3;

[0079] The displacement mechanism 9 is arranged on the hopper 1, and the displacement mechanism 9 is used for driving the driven rod 8 to move and intermittently contact the ladle 3

[0080] The driven rod 8 is in a released state, and the ladle 3 triggers the driven rod 8 when passing below the hopper 1, the driven rod 8 drives the hopper 1 to synchronously move, one end of the hopper 1 gradually leaks out the baffle 2, and then the covering agent in the hopper 1 falls into the ladle 3, and the covering agent covers the whole ladle 3 with the expansion of the leakage end of the hopper, so as to ensure the uniform discharging of the covering agent, and at the same time, the synchronous movement with the ladle 3 does not delay the transfer of the ladle 3, and the production process time is saved. When the hopper 1 discharges, the driven rod 8 is retracted and separated from the ladle 3, and then the hopper 1 is reset to repeat the operation.

[0081] The application also provides a method for automatically adding covering agent to a ladle, comprising:

[0082] A hopper 1 is arranged above the ladle 3, and a discharging end of the hopper 1 is matched with an opening end of the ladle 3;

[0083] A fixed baffle 2 is arranged above the ladle 3, and the baffle 2 is used for closing the discharging end of the hopper 1;

[0084] The ladle 3 and the hopper 1 are synchronously moved, so that the hopper 1 gradually opens to discharge the covering agent to the ladle 3;

[0085] The hopper 1 is reset to repeat the operation after discharging.

[0086] Specifically, by adding the covering agent when the ladle starts to move to the soft blowing position, and completing the addition of the covering agent after the soft blowing position is opened, the end time of the covering agent addition is more than 30 seconds earlier than the prior art, the covering agent addition period is shortened, and the covering agent is added uniformly.

[0087] In the embodiment, the synchronous movement of the ladle 3 and the hopper 1 includes:

[0088] The synchronous movement of the ladle 3 and the hopper 1 starts after the first safety time length;

[0089] After the synchronous movement of the ladle 3 and the hopper 1 for the second safety time length, the hopper 1 starts to reset.

[0090] Specifically, the first safety time length ensures that the movement speed of the hopper 1 and the ladle 3 is consistent, avoids inconsistent speed at the beginning of the movement, and the second safety time length adapts to the feedback signal of the monitoring module.

[0091] Further, the second safety time length adapts to the separation of the driven rod 8 and the ladle 3.

[0092] The embodiment is a device and method for automatically adding a covering agent to a ladle, and is used as an example of transferring the ladle 3:

[0093] The ladle 3 passes under the hopper 1, the monitoring module detects that the ladle 3 is in place, and then synchronously moves the hopper 1 through the linkage mechanism, one end of the hopper 1 gradually leaks out the baffle 2, and then the covering agent in the hopper 1 falls into the ladle 3, expands with the leakage end of the hopper, and covers the entire ladle 3, ensuring uniform covering agent unloading, and because it moves synchronously with the ladle 3, it does not delay the transfer of the ladle 3, saving the production process time.

[0094] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A device for automatically adding a covering agent to a ladle, characterized in that: include: a hopper, wherein the outlet end of the hopper cooperates with the open end of the ladle; a baffle, one end of which is connected to the refining platform, and the other end of which faces the ladle and is capable of closing the outlet end of the hopper; A linkage mechanism, which is arranged between the hopper and the refining platform and / or the ladle, and is capable of causing the hopper and the ladle to move synchronously; When the ladle is away from the refining platform, the hopper moves synchronously with the ladle until the outlet end of the hopper is fully opened; The linkage mechanism comprises: A monitoring module, the monitoring module is used to detect the movement state of the molten steel ladle; A driving module, the driving module is arranged on the refining platform and is used to drive the hopper to move; A limit module, which is arranged on the refining platform and is used to limit the hopper stroke; The baffle is provided with an extension portion, and the extension portion is used to make the hopper and the ladle move synchronously for a first safety period before starting to discharge; The baffle allows the hopper to gradually discharge material into the ladle during movement, thereby ensuring that the covering agent is added evenly and covers the entire area.

2. The device for automatically adding covering agent to a ladle according to claim 1, characterized in that: The hopper and / or the baffle are provided with a vibration module.

3. The device for automatically adding covering agent to a ladle according to claim 1, characterized in that: The monitoring module is a displacement sensor, and the displacement sensor is arranged on the hopper.

4. The device for automatically adding covering agent to a ladle according to claim 1, characterized in that: The driving module includes: A driving motor, wherein the driving motor is arranged on the refining platform, and a driving gear is arranged at a driving end of the driving motor; A rack, one end of which is connected to the hopper, and the other end of which is engaged with the driving gear.

5. The device for automatically adding covering agent to a ladle according to claim 1, characterized in that: The monitoring module includes: A driven rod, one end of which is slidably connected to the hopper, and the other end of which is intermittently in contact with the ladle; A displacement mechanism is provided on the hopper and is used to drive the driven rod to move and intermittently contact the ladle.

6. The device for automatically adding covering agent to a ladle according to claim 1, characterized in that: The device also includes a stirring mechanism, which is arranged in the hopper.

7. A method for automatically adding a covering agent to a ladle, using the device for automatically adding a covering agent to a ladle according to any one of claims 1 to 6, characterized in that: include: A hopper is provided above the ladle, and the discharge end of the hopper matches the opening end of the ladle; A fixed baffle is provided above the ladle, which is used to close the discharge end of the hopper; Move the ladle and hopper synchronously so that the hopper gradually opens to discharge the ladle; After unloading, the hopper is reset to refill.

8. The method for automatically adding a covering agent to a ladle according to claim 7, wherein: The synchronous movement of the ladle and hopper comprises: The ladle and hopper move synchronously for the first safe period before unloading begins; After unloading, the ladle and hopper move synchronously for the second safety period, and then the hopper starts to reset.

Images