Converter ladle nozzle hot repair dedusting device and method

Abstract

The application discloses a converter ladle nozzle hot repair dedusting device and method, wherein the converter ladle nozzle hot repair dedusting device is used for performing hot repair dedusting on a horizontally placed ladle, and is characterized in that the device comprises a capturing cover, a dedusting pipeline and a moving assembly; the capturing cover is arranged above a nozzle eye at the bottom of the ladle; the dedusting pipeline is connected with the capturing cover and is connected into a dedusting system; and the moving assembly is connected with the capturing cover and is used for driving the capturing cover to move between a working position and a waiting position. In a non-working state, the capturing cover is located at the waiting position, so that a crane can hoist and transport the ladle to a hot repair eye burning working position; when the eye burning operation is performed, the capturing cover is driven by the moving assembly to move from the waiting position to the working position, smoke and dust generated in the eye burning operation are captured by the capturing cover, the phenomenon that the smoke and dust overflow from the nozzle eye at the bottom of the ladle is avoided, the operators at the post are not harmed, and the surrounding environment is not polluted.

Description

Technical Field

[0001] This application belongs to the field of steelmaking technology, specifically relating to a dust removal device and method for hot repair of converter ladle nozzles. Background Technology

[0002] As a crucial carrier for molten steel, the ladle is essential for the normal and orderly operation of steelmaking. During the routine hot maintenance and turnover of the ladle, regular hot maintenance and replacement of sliding gate nozzles are required. During hot maintenance, oxygen-burning pipes are used to blow oxygen into the bottom nozzle of the ladle. This process generates smoke and dust that overflows from the bottom nozzle, and the direction of this smoke and dust overflow is unpredictable, posing a risk of injury to operators and polluting the surrounding environment. Summary of the Invention

[0003] To address the technical problem in the prior art where smoke and dust overflow from the bottom nozzle of a ladle during hot repair, causing harm to operators and pollution to the surrounding environment, this application provides a dust removal device and method for hot repair of converter ladle nozzles.

[0004] The first aspect of this application provides a hot repair dust removal device for converter ladle nozzles, used for hot repair dust removal of horizontally placed ladles, comprising:

[0005] A trap is installed above the water inlet at the bottom of the ladle;

[0006] A dust removal duct, which is connected to the collection hood and connected to the dust removal system;

[0007] A moving component, connected to the trapping hood, is used to drive the trapping hood to move between a working position and a waiting position.

[0008] In some alternative embodiments, the moving component includes a cylinder, a travel track, and a wheel assembly, the wheel assembly being slidably mounted on the travel track and connected to the trapping hood, and the cylinder being connected to the wheel assembly.

[0009] In some alternative embodiments, the moving component further includes a limit switch electrically connected to the cylinder, the limit switch being used to control the stroke of the cylinder.

[0010] In some alternative embodiments, the dust removal duct includes an inner sleeve and an outer sleeve, the inner sleeve being connected to the dust removal system, the outer sleeve being connected to the collection hood, and the outer sleeve being fitted over the inner sleeve.

[0011] In some alternative embodiments, the dust removal duct further includes a flexible connector that is connected to both the inner sleeve and the outer sleeve.

[0012] In some alternative implementations, a dust removal valve is also included, one end of which is connected to the inner sleeve and the other end of which is connected to the dust removal system.

[0013] In some alternative implementations, an audible and visual alarm is also included, which is used to issue an audible and visual alarm as the cylinder drives the trap hood to move.

[0014] In some alternative embodiments, the bottom of the ladle is equipped with a tilting device and a hydraulic cylinder lifting mechanism, and the collection hood is provided with a clearance part for avoiding the tilting device and the hydraulic cylinder lifting mechanism.

[0015] A second aspect of this application provides a method for hot repair and dust removal of converter ladle nozzles, using the dust removal device for hot repair of converter ladle nozzles described in the first aspect, comprising:

[0016] In the non-working state, the trap is in the waiting position, and the ladle is hoisted to the hot repair burn-in working position;

[0017] The capture hood is moved from the waiting position to the working position by the moving component;

[0018] The smoke and dust generated during the burning operation are captured by a collection hood.

[0019] In some alternative implementations, the step of driving the trapping hood from the waiting position to the working position via the moving component includes: driving the wheel assembly to slide on the travel track via the cylinder; controlling the stroke of the cylinder via the limit switch to move the trapping hood from the waiting position to the working position; and emitting an audible and visual alarm via an audible and visual alarm during the movement of the trapping hood.

[0020] Before collecting the smoke and dust generated by the burning operation through the collection hood, the method further includes: opening the dust removal valve so that the dust removal pipeline is connected to the dust removal system.

[0021] A converter ladle nozzle hot repair dust removal device provided according to one or more embodiments of this application has the following advantages compared with the prior art:

[0022] In the non-working state, the collection hood is in the waiting position, which facilitates the crane to lift the ladle to the hot repair burner working position. When the burner operation is performed, the collection hood is driven by the moving component to move from the waiting position to the working position. The collection hood captures the smoke and dust generated during the burner operation, preventing smoke and dust from overflowing from the bottom nozzle of the ladle. This will not cause harm to the operators or pollute the surrounding environment. Attached Figure Description

[0023] Figure 1A front view of a converter ladle nozzle hot repair dust removal device is shown in one or more embodiments of this application;

[0024] Figure 2 The illustration shows a right view of the ladle and dust collection hood of a converter ladle nozzle hot repair dust removal device according to one or more embodiments of this application;

[0025] Figure 3 A front view of a portion of the structure of a converter ladle nozzle hot repair dust removal device is shown in one or more embodiments of this application;

[0026] Figure 4 The illustration shows a top view of the ladle and dust collection hood of a converter ladle nozzle hot repair dust removal device according to one or more embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 100-steel ladle, 101-water inlet; 200-dust removal system; 300-tilting device; 400-cylinder lifting mechanism; 1-collection hood, 11-avoidance part; 2-dust removal pipe, 21-inner sleeve, 22-outer sleeve, 23-flexible connector; 3-moving component, 31-cylinder, 32-traveling track, 33-wheel device, 34-connecting rod, 35-limit switch; 4-dust removal valve; 5-audible and visual alarm; 6-controller. Detailed Implementation

[0028] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] Please see Figures 1-4 The first aspect of this application provides a hot repair dust removal device for a converter ladle nozzle, used for hot repair dust removal of a horizontally placed ladle 100, including a collection hood 1, a dust removal pipe 2, and a moving assembly 3, wherein:

[0030] The trap hood 1 is positioned above the water inlet 101 at the bottom of the ladle 100;

[0031] The dust removal pipe 2 is connected to the collection hood 1 and is connected to the dust removal system 200;

[0032] The moving component 3 is connected to the trapping hood 1 and is used to drive the trapping hood 1 to move between the working position and the waiting position.

[0033] This application provides a converter ladle nozzle hot repair dust removal device. In the non-working state, the collection hood 1 is located in the waiting position, which facilitates the crane to lift the ladle 100 to the hot repair burner working position. When the burner operation is performed, the moving component 3 drives the collection hood 1 to move from the waiting position to the working position. The collection hood 1 collects the smoke and dust generated by the burner operation, preventing the smoke and dust from overflowing from the bottom nozzle 101 of the ladle 100. This will not cause harm to the operators or pollute the surrounding environment.

[0034] In some optional embodiments, the moving component 3 includes a cylinder 31, a travel track 32, and a wheel assembly 33, the wheel assembly 33 being slidably mounted on the travel track 32 and connected to the trapping hood 1, and the cylinder 31 being connected to the wheel assembly 33.

[0035] In some further alternative embodiments, if the axis of the dust removal duct 2 and the centerline of the travel track 32 are located in the same vertical plane, the dust removal duct 2 may interfere with the travel track 32. To solve the above problem, the moving component 3 also includes a connecting rod 34, the two ends of which are connected to the collection hood 1 and the wheel device 33 respectively, to increase the distance between the collection hood 1 and the wheel device 33, thereby avoiding interference between the dust removal duct 2 and the travel track 32 and improving the reliability of the device.

[0036] In some optional embodiments, the moving component 3 further includes a limit switch 35 electrically connected to the cylinder 31, the limit switch 35 being used to control the stroke of the cylinder 31. The limit switch 35, a type of position switch (also known as a limit switch), is a commonly used low-current control electrical device. Various limit switches 35 contain a microswitch element similar to a button. During use, when the stroke of the working machine reaches a certain specified distance, the striker of the limit switch 35 is pressed down, the microswitch is pressed, and its contacts open (or close). Here, the limit switch 35 causes the cylinder 31 to automatically stop moving after a certain stroke, thereby controlling the stroke of the cylinder 31 to control the stroke of the trapping hood 1, so that the trapping hood 1 moves precisely from the waiting position to the working position.

[0037] In some optional embodiments, the dust removal duct 2 includes an inner sleeve 21 and an outer sleeve 22. The inner sleeve 21 is connected to the dust removal system 200, and the outer sleeve 22 is connected to the collection hood 1, with the outer sleeve 22 fitting over the inner sleeve 21. The travel distance of the collection hood 1 between the working position and the waiting position is compensated by the expansion and contraction of the inner sleeve 21 within the outer sleeve 22. During the movement of the collection hood 1, the outer sleeve 22 and the inner sleeve 21 remain nested together, ensuring that dust enters the dust removal system 200 through the inner sleeve 21 and the outer sleeve 22, and that the dust removal duct 2 does not affect the movement of the collection hood 1, thus improving the stability and reliability of the device.

[0038] In some optional embodiments, the dust removal duct 2 further includes a flexible connector 23, which is connected to both the inner sleeve 21 and the outer sleeve 22. By connecting the flexible connector 23 to both the inner sleeve 21 and the outer sleeve 22, a dynamic seal is achieved between them, preventing dust from escaping through the gap and improving dust removal quality. The flexible connector 23 in this embodiment is made of a non-metallic soft material, such as a rubber tube or a telescopic tube.

[0039] In some optional embodiments, the converter ladle nozzle hot repair dust removal device further includes a dust removal valve 4, one end of which is connected to the inner sleeve 21, and the other end is connected to the dust removal system 200. By connecting one end of the dust removal valve 4 to the inner sleeve 21 and the other end to the dust removal system 200, the dust removal valve 4 is closed when the collection hood 1 is in the waiting position and open when the collection hood 1 is in the working position, which can prevent waste of dust removal airflow and save costs. In this embodiment, the dust removal valve 4 can be a butterfly valve.

[0040] In some optional embodiments, the converter ladle nozzle hot repair dust removal device further includes an audible and visual alarm 5, which is used to issue an audible and visual alarm during the movement of the collection hood 1 driven by the cylinder 31. During the movement of the collection hood 1, the audible and visual alarm 5 issues an audible and visual alarm to warn operators, preventing safety accidents and improving the safety of the device.

[0041] In some optional embodiments, a tilting device 300 and a hydraulic cylinder lifting mechanism 400 are installed at the bottom of the ladle 100, and the collection hood 1 is provided with a clearance part 11, which is used to avoid the tilting device 300 and the hydraulic cylinder lifting mechanism 400. The tilting device 300 is installed at the bottom of the ladle 100, and the hydraulic cylinder lifting mechanism 400 is needed to raise and lower the sliding plate mechanism before and after the burning process. By using the clearance part 11 to avoid the tilting device 300 and the hydraulic cylinder lifting mechanism 400, the requirements for effective and comprehensive dust collection can be met, and there is no interference with the original tilting device 300 and hydraulic cylinder lifting mechanism 400 of the ladle 100. This eliminates the need to change the original operating mode and improves the reliability and stability of the device. In actual design, the clearance part 11 can be equipped with a soft seal. When the soft seal contacts the tilting device 300 and the hydraulic cylinder lifting mechanism 400, it can be recessed, so as not to interfere with the tilting device 300 and the hydraulic cylinder lifting mechanism 400, and not to allow smoke and dust to escape from the clearance part 11, thereby improving the dust removal quality.

[0042] In some optional embodiments, the converter ladle nozzle hot repair dust removal device further includes a controller 6. The controller 6 is electrically connected to the cylinder 31, dust removal valve 4, limit switch 35, and audible and visual alarm 5 to control the cylinder 31, dust removal valve 4, limit switch 35, and audible and visual alarm 5 to operate according to preset rules. Specifically, the controller 6 controls the cylinder 31 to drive the wheel device 33 to slide on the traveling track 32; the controller 6 controls the limit switch 35 to control the stroke of the cylinder 31, so that the collection hood 1 moves from the waiting position to the working position; the controller 6 controls the audible and visual alarm 5 to emit an audible and visual alarm during the movement of the collection hood 1; and the controller 6 controls the dust removal valve 4 to open, so that the dust removal pipe 2 is connected to the dust removal system 200.

[0043] A second aspect of this application provides a method for hot repair and dust removal of converter ladle nozzles, using the hot repair and dust removal device for converter ladle nozzles described in the first aspect, comprising:

[0044] Step S1: In the non-working state, the trap 1 is in the waiting position, and the ladle 100 is hoisted to the hot repair burn-in working position;

[0045] Step S2: Drive the trapping hood 1 from the waiting position to the working position via the moving component 3;

[0046] Step S3: Collect the smoke and dust generated during the burning operation using the collection hood 1.

[0047] In some optional implementations, step S2, in which the moving component 3 drives the trapping hood 1 from the waiting position to the working position, specifically includes: driving the wheel device 33 to slide on the traveling track 32 by the cylinder 31; controlling the stroke of the cylinder 31 by the limit switch 35 so that the trapping hood 1 moves from the waiting position to the working position; and emitting an audible and visual alarm by the audible and visual alarm 5 during the movement of the trapping hood 1.

[0048] In step S3, before collecting the smoke and dust generated by the burning operation through the collection hood 1, the method further includes: opening the dust removal valve 4 so that the dust removal pipe 2 is connected to the dust removal system 200.

[0049] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A converter ladle nozzle hot repair dust removal device, used for hot repair dust removal of horizontally placed ladles, characterized in that, include: A trap is installed above the water inlet at the bottom of the ladle; A dust removal duct, which is connected to the collection hood and connected to the dust removal system; A moving component, connected to the trapping hood, for driving the trapping hood to move between a working position and a waiting position; The moving component includes a cylinder, a traveling track, and a wheel assembly. The wheel assembly is slidably mounted on the traveling track and connected to the collection hood. The cylinder is connected to the wheel assembly. The moving component also includes a limit switch that is electrically connected to the cylinder, the limit switch being used to control the stroke of the cylinder; The dust removal pipe includes an inner sleeve and an outer sleeve. The inner sleeve is connected to the dust removal system, and the outer sleeve is connected to the collection hood. The outer sleeve is fitted over the inner sleeve. The converter ladle nozzle hot repair dust removal device also includes a dust removal valve, one end of which is connected to the inner sleeve and the other end is connected to the dust removal system; The converter ladle nozzle hot repair dust removal device also includes an audible and visual alarm, which is used to issue an audible and visual alarm during the process of the cylinder driving the collection hood to move.

2. The converter ladle nozzle hot repair dust removal device according to claim 1, characterized in that, The dust removal duct also includes a flexible connector, which is connected to the inner sleeve and the outer sleeve respectively.

3. The converter ladle nozzle hot repair dust removal device according to claim 1, characterized in that, The bottom of the ladle is equipped with a tilting device and a hydraulic cylinder lifting mechanism, and the collection hood is provided with a clearance part, which is used to avoid the tilting device and the hydraulic cylinder lifting mechanism.

4. A method for hot repair and dust removal of converter ladle nozzles, using the hot repair and dust removal device for converter ladle nozzles as described in any one of claims 1-3, characterized in that, include: In the non-working state, the trap is in the waiting position, and the ladle is hoisted to the hot repair burn-in working position; The capture hood is moved from the waiting position to the working position by the moving component; The smoke and dust generated during the burning operation are captured by a collection hood.

5. The method for hot repair and dust removal of converter ladle nozzles according to claim 4, characterized in that, The step of driving the trapping hood from the waiting position to the working position via the moving component includes: driving the wheel device to slide on the travel track via the cylinder; controlling the stroke of the cylinder via the limit switch to move the trapping hood from the waiting position to the working position; and emitting an audible and visual alarm via an audible and visual alarm during the movement of the trapping hood. Before collecting the smoke and dust generated by the burning operation through the collection hood, the method further includes: opening the dust removal valve so that the dust removal pipeline is connected to the dust removal system.

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