Deslagging mechanism for steelmaking furnace

Abstract

The utility model relates to the related technical field of slag removal of steel furnaces, and provides a slag removal mechanism for a steel furnace, which comprises a vertical frame and a cooling cylinder, the cooling cylinder is arranged on the vertical frame, a lifting driving assembly is arranged between the cooling cylinder and the vertical frame, a scraping and collecting assembly is arranged outside the cooling cylinder, an inner frame is fixed at the top in the cooling cylinder, and the inner frame is fixed at the bottom of the cooling cylinder. The centrifugal fan is installed on the inner frame, the smoke removal assembly is arranged at the top of the cooling cylinder, the blowing assembly is arranged at the bottom of the cooling cylinder, the scraping collection assembly comprises a plurality of outer grooves, the outer grooves are evenly formed in the periphery of the side surface of the cooling cylinder, scraping frames are arranged in the outer grooves and higher than the surface of the side wall of the cooling cylinder, and inlet grooves are formed in the surface of one side of the bottom in the outer grooves. By means of the technical scheme, the technical problems that in the prior art, a traditional deslagging mechanism of the steel refining furnace generally cannot be cooled while deslagging is conducted, and more residues exist after deslagging is conducted are solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of slag removal in steelmaking furnaces, and more specifically, to a slag removal mechanism for steelmaking furnaces. Background Technology

[0002] In the steelmaking process, the slag removal mechanism is a key piece of equipment to ensure the efficient operation of the steelmaking furnace and the quality of molten steel. Its slag removal effect and cooling capacity directly affect steelmaking efficiency and steel product quality. However, traditional steelmaking furnace slag removal mechanisms generally suffer from the problems of not being able to cool down while removing slag and having a lot of residue after slag removal. This not only increases the difficulty of subsequent smelting processes, but also affects the service life of the steelmaking furnace and the quality of molten steel.

[0003] Most existing slag removal mechanisms only have a single slag removal function and lack a simultaneous cooling design. During the slag removal process, the temperature of the high-temperature slag is extremely high, and traditional mechanisms cannot effectively cool it. This results in the slag remaining at a high temperature during transportation and processing, which not only increases the safety risks for operators but may also damage transportation equipment. For example, after the slag is discharged from the steelmaking furnace, due to the lack of timely cooling, the slag continues to emit a large amount of heat, which not only pollutes the environment but may also cause safety accidents such as fires.

[0004] Meanwhile, traditional slag removal mechanisms are not ideal in removing slag, resulting in significant slag residue. Due to design flaws, these mechanisms struggle to completely remove slag from the steelmaking furnace, causing residue to accumulate and impacting subsequent smelting processes. This residue not only increases the furnace's heat load and reduces its lifespan but can also lead to uneven steel composition, affecting steel quality. Furthermore, the residual slag requires additional manpower and equipment for cleaning, increasing production costs and labor intensity.

[0005] With the continuous development of steelmaking technology, the requirements for slag removal mechanisms are becoming increasingly stringent. Traditional slag removal mechanisms, due to problems such as "inability to simultaneously cool down, excessive residue, and low efficiency," can no longer meet the needs of modern steelmaking production. There is an urgent need to develop a slag removal mechanism that can simultaneously cool down the slag and remove it thoroughly, in order to solve the industry pain points of "difficulty in handling high-temperature slag, excessive residue, and high cost," and to promote the advancement of steelmaking technology. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a slag removal mechanism for steelmaking furnaces, which solves the technical problems that traditional slag removal mechanisms for steelmaking furnaces in the prior art generally cannot cool down while removing slag and have a lot of residue after slag removal.

[0007] According to one aspect, at least one embodiment of this disclosure provides a slag removal mechanism for a steelmaking furnace, comprising:

[0008] A support frame and a cooling cylinder, wherein the cooling cylinder is mounted on the support frame;

[0009] A lifting drive assembly is disposed between the cooling cylinder and the upright frame;

[0010] A scraping and collecting assembly is disposed outside the cooling cylinder;

[0011] The cooling cylinder includes an inner frame, a centrifugal fan, and a smoke removal assembly. The inner frame is fixed to the top of the cooling cylinder, the centrifugal fan is mounted on the inner frame, and the smoke removal assembly is located at the top of the cooling cylinder.

[0012] An air blowing assembly is disposed at the bottom of the cooling cylinder;

[0013] The cleaning and collecting assembly includes several outer grooves, which are evenly distributed around the side surface of the cooling cylinder. A cleaning frame is installed inside the outer groove, and the cleaning frame is higher than the side wall surface of the cooling cylinder. An inlet groove is opened on one side of the bottom of the outer groove.

[0014] As a further technical solution, the smoke removal assembly includes a top cover, which is disposed on the top of the cooling cylinder. Several smoke-smoking holes are opened around the side surface of the top cover, and a dispersion pipe is provided inside the top cover. One end of the dispersion pipe is connected to the air inlet of the centrifugal fan.

[0015] As a further technical solution, an air intake box is installed on the stand, and a filter screen and a purification filter element are installed inside the air intake box. An exhaust hole is opened on one side surface of the air intake box.

[0016] As a further technical solution, the air blowing assembly includes several bottom grooves, all of which are opened at the bottom of the cooling cylinder. A connecting air pipe is provided at the bottom of the cooling cylinder, and the lower end of the connecting air pipe is connected to the bottom groove.

[0017] As a further technical solution, the lifting drive assembly includes a vertical lead screw, which is disposed inside the upright frame. The vertical lead screw is rotated by a motor. A lifting frame is vertically slidably connected inside the upright frame, and the lifting frame is connected to the vertical lead screw by a threaded connection.

[0018] As a further technical solution, the upper end of the cooling cylinder is rotatably connected to the lifting frame, and a control motor is provided on the top of the lifting frame, with the output end of the control motor connected to the cooling cylinder.

[0019] As a further technical solution, the top of the cover slopes outwards around its entire circumference.

[0020] As a further technical solution, a stabilizing bearing is provided at the connection between the cooling cylinder and the output end of the control motor, and the stabilizing bearing is rotatably connected inside the lifting frame.

[0021] The beneficial effects of the embodiments disclosed herein are as follows:

[0022] 1. In this disclosure, the scraping and collecting component uses an outer groove and a scraping frame on the side surface of the cooling cylinder to scrape off the attached waste residue when the cooling cylinder rotates. The waste residue falls into the collection chamber inside the cooling cylinder through an inlet groove, solving the problem of excessive residue after slag removal. The scraping frame is made of wear-resistant alloy material and has elastic support at the bottom of the outer groove, which can adaptively compensate for the wear of the cooling cylinder wall, ensuring the scraping effect, realizing continuous scraping and centralized collection of waste residue, avoiding the accumulation of waste residue from affecting cooling efficiency, and improving the thoroughness of slag removal.

[0023] 2. In this disclosure, the smoke removal assembly utilizes a top cover, smoke inlets, and dispersion pipes to create a negative pressure airflow through a centrifugal fan, drawing in the smoke and dust from the cooling cylinder. After being processed by the filter screen and purification filter element of the air inlet box, clean air is discharged, solving the problem of smoke pollution during the slag removal process. The dispersion pipes inside the top cover are distributed in a tree-like pattern to ensure uniform suction force at each smoke inlet, effectively removing the smoke and dust generated during cooling, improving the working environment, and protecting the health of operators.

[0024] 3. In this disclosure, the air blowing assembly uses a bottom groove at the bottom of the cooling cylinder and a connecting air pipe. An external high-pressure air source sprays high-speed airflow from the bottom groove through the connecting air pipe to flush the waste slag accumulated at the bottom of the furnace. The waste slag is blown up and carried out with the cooling cylinder, solving the problem of cleaning waste slag at the bottom of the furnace. The bottom groove is distributed in a ring array, and the airflow covers the entire area of ​​the bottom of the furnace. An additional solenoid valve can be installed to control the start and stop of air blowing and the air pressure, adapting to the cleaning needs of waste slag of different thicknesses, enhancing the cleaning effect of the bottom of the furnace, and improving the overall cleaning efficiency of the slag removal mechanism. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0026] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0027] Figure 2 This is an isometric drawing of the present disclosure;

[0028] Figure 3 This is an isometric sectional view of the present disclosure;

[0029] Figure 4Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0030] In the diagram: 1. Upright frame; 2. Cooling cylinder; 3. Inner frame; 4. Centrifugal fan; 5. Scraping and collecting assembly; 5-1. Outer trough; 5-2. Scraping frame; 5-3. Inlet trough; 6. Smoke removal assembly; 6-1. Top cover; 6-2. Smoke extraction port; 6-3. Dispersion pipe; 6-4. Air inlet box; 6-5. Filter screen; 6-6. Purification filter element; 6-7. Exhaust port; 7. Air blowing assembly; 7-1. Bottom trough; 7-2. Connecting air pipe; 8. Lifting drive assembly; 8-1. Vertical lead screw; 8-2. Lifting frame; 8-3. Control motor; 9. Stable bearing seat. Detailed Implementation

[0031] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0032] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0034] In this disclosure, 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 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 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.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-4 As shown, it illustrates a slag removal mechanism for a steelmaking furnace according to an embodiment of the present disclosure, comprising:

[0038] A support frame 1 and a cooling cylinder 2, wherein the cooling cylinder 2 is mounted on the support frame 1;

[0039] A lifting drive assembly 8 is disposed between the cooling cylinder 2 and the upright frame 1;

[0040] A scraping and collecting assembly 5 is disposed outside the cooling cylinder 2;

[0041] The inner frame 3, centrifugal fan 4, and smoke removal assembly 6 are provided. The inner frame 3 is fixed to the top of the cooling cylinder 2, the centrifugal fan 4 is installed on the inner frame 3, and the smoke removal assembly 6 is located at the top of the cooling cylinder 2.

[0042] Air blowing assembly 7 is disposed at the bottom of the cooling cylinder 2;

[0043] The cleaning and collecting assembly 5 includes several outer grooves 5-1, which are evenly distributed around the side surface of the cooling cylinder 2. A cleaning frame 5-2 is provided inside the outer groove 5-1, and the cleaning frame 5-2 is higher than the side wall surface of the cooling cylinder 2. An inlet groove 5-3 is provided on one side of the bottom of the outer groove 5-1.

[0044] In some examples, a scraping and collection assembly 5 is designed to scrape and collect waste residue during the cooling rotation process of the cooling cylinder 2. This assembly is based on an outer groove 5-1 evenly spaced circumferentially on the side surface of the cooling cylinder 2. The scraping frame 5-2 inside the outer groove 5-1 is made of wear-resistant alloy, with its cutting edge 0.5-1 cm above the side wall surface of the cooling cylinder 2. When the cooling cylinder 2 rotates, the scraping frame 5-2 scrapes off the waste residue adhering to the cylinder wall. The inlet groove 5-3 at the bottom of the outer groove 5-1 communicates with the internal collection chamber of the cooling cylinder 2. The scraped waste residue falls into the collection chamber through the inlet groove 5-3, achieving automatic collection. An elastic support is provided between the scraping frame 5-2 and the bottom of the outer groove 5-1 to adaptively compensate for wear on the wall of the cooling cylinder 2, ensuring effective scraping.

[0045] The rotating cooling cylinder 2 drives the scraping frame 5-2 to scrape circumferentially, and the entry groove 5-3 guides the waste residue into the collection chamber. The scraping and collection component 5 realizes continuous scraping and centralized collection of waste residue, avoiding the accumulation of waste residue and affecting the cooling efficiency.

[0046] like Figures 1-4 As shown in the figure, the smoke removal assembly 6 in this embodiment includes a top cover 6-1, which is disposed on the top of the cooling cylinder 2. A plurality of smoke extraction holes 6-2 are opened around the side surface of the top cover 6-1. A dispersion pipe 6-3 is provided inside the top cover 6-1. One end of the dispersion pipe 6-3 is connected to the air inlet of the centrifugal fan 4. An air inlet box 6-4 is installed on the upright frame 1. A filter screen 6-5 and a purification filter element 6-6 are installed inside the air inlet box 6-4. An exhaust hole 6-7 is opened on one side surface of the air inlet box 6-4.

[0047] In some examples, a smoke removal assembly 6 is designed to remove fumes and dust generated during the cooling process. This assembly centers on the top cover 6-1 at the top of the cooling cylinder 2. Smoke extraction holes 6-2 circumferentially opened on its side surface connect to inner dispersion pipes 6-3. A centrifugal fan 4 is mounted on the inner frame 3. Upon startup, it creates a negative pressure airflow through the dispersion pipes 6-3 and the smoke extraction holes 6-2, drawing in the fumes and dust from the cooling cylinder 2. The airflow first passes through a filter screen 6-5 in the air inlet box 6-4 to intercept large particles, then passes through a purification filter element 6-6 to adsorb harmful gases and fine dust, and finally discharges clean air through the exhaust port 6-7. The dispersion pipes 6-3 inside the top cover 6-1 are arranged in a tree-like pattern to ensure uniform suction at each smoke extraction hole 6-2.

[0048] Through the negative pressure suction of centrifugal fan 4, the particle interception of filter screen 6-5, and the gas purification of purification filter element 6-6, the smoke removal component 6 effectively removes the smoke and dust generated during the cooling process, improving the working environment.

[0049] like Figures 1-4 As shown in the figure, the air blowing assembly 7 in this embodiment includes several bottom grooves 7-1, all of which are opened at the bottom of the cooling cylinder 2. A connecting air pipe 7-2 is provided at the bottom of the cooling cylinder 2, and the lower end of the connecting air pipe 7-2 is connected to the bottom groove 7-1.

[0050] In some examples, an air blowing assembly 7 is designed to enhance the furnace bottom cleaning effect. This assembly uses a bottom groove 7-1 at the bottom of the cooling cylinder 2 as the air outlet. An internal connecting pipe 7-2 connects to an external high-pressure air source. The airflow is ejected from the bottom groove 7-1 through the connecting pipe 7-2, forming a high-speed airflow that washes over the furnace bottom. The bottom grooves 7-1 are arranged in a ring array, allowing the ejected airflow to cover the entire furnace bottom area, blowing up the accumulated waste slag and carrying it out with the cooling cylinder 2. A solenoid valve can be installed on the connecting pipe 7-2, which, in conjunction with control equipment, controls the start / stop and air pressure of the air blowing, adapting to the cleaning needs of waste slag of different thicknesses.

[0051] By using the high-speed airflow ejected from the bottom groove 7-1 to scour the furnace bottom, the air blowing assembly 7 achieves efficient cleaning of the slag at the furnace bottom, improving the overall cleaning effect of the slag removal mechanism.

[0052] like Figures 1-4 As shown in the figure, the lifting drive assembly 8 in this embodiment includes a vertical lead screw 8-1, which is disposed in the upright frame 1. The vertical lead screw 8-1 is rotated by a motor. A lifting frame 8-2 is vertically slidably connected in the upright frame 1. The lifting frame 8-2 is connected to the vertical lead screw 8-1 by a threaded connection. The upper end of the cooling cylinder 2 is rotatably fitted in the lifting frame 8-2. A control motor 8-3 is provided on the top of the lifting frame 8-2. The output end of the control motor 8-3 is connected to the cooling cylinder 2.

[0053] In some examples, a lifting drive assembly 8 is designed to control the lifting and rotation of the cooling cylinder 2. This assembly uses a vertical lead screw 8-1 within the support frame 1 as the lifting power source. When the motor drives the lead screw to rotate, the lifting frame 8-2, which is threaded with the lead screw, slides vertically along the support frame 1, causing the cooling cylinder 2 to move up and down, meeting the slag removal requirements of steelmaking furnaces of different heights. The control motor 8-3 at the top of the lifting frame 8-2 drives the cooling cylinder 2 to rotate via gear transmission, ensuring that the cleaning and collection assembly 5 effectively scrapes away slag. The cooling cylinder 2 and the lifting frame 8-2 are connected by a rotating bearing assembly, ensuring smooth rotation while withstanding radial forces.

[0054] Through the lifting transmission of the vertical lead screw 8-1, the rotation drive of the control motor 8-3, and the rotation support of the bearing, the lifting drive assembly 8 realizes the precise lifting and stable rotation of the cooling cylinder 2, providing flexible motion control for slag removal operations.

[0055] For example, such as Figure 1 As shown, the top of the top cover 6-1 slopes outwards around its entire circumference.

[0056] In some examples, the inclined transition structure enables the top cover 6-1 to have a downward smoke-absorbing effect, thereby improving the smoke removal effect.

[0057] For example, such as Figure 3As shown, a stabilizing bearing 9 is provided at the connection between the cooling cylinder 2 and the output end of the control motor 8-3, and the stabilizing bearing 9 is rotatably connected inside the lifting frame 8-2.

[0058] In some examples, by providing a stable bearing 9, the weight of the cooling cylinder 2 can be distributed to the lifting frame 8-2, so that the control motor 8-3 only provides the driving force for rotation.

[0059] In practical use: The support frame 1 is fixed next to the steelmaking furnace. The cooling cylinder 2 is installed on the support frame 1 via the vertical screw 8-1 and lifting frame 8-2 of the lifting drive assembly 8. The control motor 8-3 is connected to the cooling cylinder 2. The outer groove 5-1 of the cleaning and collecting assembly 5 is opened on the side surface of the cooling cylinder 2. The cleaning frame 5-2 is placed inside the outer groove 5-1. The inlet groove 5-3 connects the outer groove 5-1 with the interior of the cooling cylinder 2. The inner frame 3 is fixed to the top of the cooling cylinder 2. The centrifugal fan 4 is installed on the inner frame 3. The top cover 6-1 of the smoke removal assembly 6 is set on the top of the cooling cylinder 2. The smoke extraction hole 6-2 and the dispersion pipe 6-3 are connected to the centrifugal fan 4. The air inlet box... 6-4 is installed on the upright frame 1. The filter screen 6-5 and the purification filter element 6-6 are placed in the air inlet box 6-4. The bottom groove 7-1 of the air blowing component 7 is opened at the bottom of the cooling cylinder 2. The connecting air pipe 7-2 connects the bottom groove 7-1 to the external air source. When in use, the lifting drive component 8 adjusts the position of the cooling cylinder 2. The centrifugal fan 4 removes the flue gas through the smoke removal component 6. The air blowing component 7 sprays out airflow to wash the bottom of the furnace. When the cooling cylinder 2 rotates, the cleaning scraper 5-2 scrapes off the waste residue and collects it through the inlet groove 5-3. The outer wall of the cooling cylinder 2 can be kept at a low temperature by spraying nitrogen. After entering the steelmaking furnace, it can achieve a certain cooling effect.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A slag removal mechanism for a steelmaking furnace, characterized in that, include: A support frame (1) and a cooling cylinder (2), wherein the cooling cylinder (2) is mounted on the support frame (1); A lifting drive assembly (8) is disposed between the cooling cylinder (2) and the upright frame (1); A scraping and collecting assembly (5) is disposed outside the cooling cylinder (2); The inner frame (3), centrifugal fan (4), and smoke removal assembly (6) are provided. The inner frame (3) is fixed inside the top of the cooling cylinder (2). The centrifugal fan (4) is installed on the inner frame (3). The smoke removal assembly (6) is located on the top of the cooling cylinder (2). An air blowing assembly (7) is disposed at the bottom of the cooling cylinder (2); The cleaning and collecting assembly (5) includes several outer grooves (5-1), which are evenly distributed around the side surface of the cooling cylinder (2). A cleaning frame (5-2) is provided inside the outer groove (5-1), which is higher than the side wall surface of the cooling cylinder (2). An inlet groove (5-3) is provided on one side of the bottom of the outer groove (5-1).

2. The slag removal mechanism for a steelmaking furnace according to claim 1, characterized in that, The smoke removal assembly (6) includes a top cover (6-1), which is located on the top of the cooling cylinder (2). A plurality of smoke holes (6-2) are opened around the side surface of the top cover (6-1). A dispersion pipe (6-3) is provided inside the top cover (6-1), and one end of the dispersion pipe (6-3) is connected to the air inlet of the centrifugal fan (4).

3. The slag removal mechanism for a steelmaking furnace according to claim 2, characterized in that, An air intake box (6-4) is installed on the stand (1). A filter screen (6-5) and a purification filter element (6-6) are installed inside the air intake box (6-4). An exhaust hole (6-7) is opened on one side surface of the air intake box (6-4).

4. The slag removal mechanism for a steelmaking furnace according to claim 1, characterized in that, The air blowing assembly (7) includes several bottom grooves (7-1), all of which are located at the bottom of the cooling cylinder (2). A connecting air pipe (7-2) is provided at the bottom of the cooling cylinder (2), and the lower end of the connecting air pipe (7-2) is connected to the bottom groove (7-1).

5. A slag removal mechanism for a steelmaking furnace according to claim 1, characterized in that, The lifting drive assembly (8) includes a vertical lead screw (8-1), which is disposed in the upright frame (1). The vertical lead screw (8-1) is rotated by a motor. A lifting frame (8-2) is vertically slidably connected in the upright frame (1). The lifting frame (8-2) and the vertical lead screw (8-1) are connected by a threaded connection.

6. A slag removal mechanism for a steelmaking furnace according to claim 5, characterized in that, The upper end of the cooling cylinder (2) is rotatably connected to the lifting frame (8-2). The top of the lifting frame (8-2) is equipped with a control motor (8-3), and the output end of the control motor (8-3) is connected to the cooling cylinder (2).

7. A slag removal mechanism for a steelmaking furnace according to claim 2, characterized in that, The top of the cover (6-1) slopes outwards around its entire circumference.

8. A slag removal mechanism for a steelmaking furnace according to claim 6, characterized in that, A stabilizing bearing (9) is provided at the connection between the cooling cylinder (2) and the output end of the control motor (8-3), and the stabilizing bearing (9) is rotatably connected inside the lifting frame (8-2).

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