Quick-release secondary lance scraping device

Abstract

The utility model discloses a quick disassembly type vice gun scraping device relates to converter vice gun system technical field, including vice gun passageway (1), is connected nitrogen seal seat (2) through flange on this vice gun passageway, is connected a guide cone cylinder (3) on this nitrogen seal seat, be connected with a frame type pressing plate subassembly on the guide cone cylinder (3), and the frame type pressing plate subassembly is set down with the inclination of many root scraping slag steel wire ropes (5) in many directions in it, compared with prior art, the utility model discloses a steel wire rope as scraper, not only can through the elasticity of itself and exert external force, but also can protect the gun body from secondary damage to the greatest extent, and multi -angle steel wire rope combination increases the scraping area, improves scraping efficiency, and the bottom of the slag scraper is provided with nitrogen seal, and the slag block plays a sealing and flushing effect after falling, avoids the situation that the slag is accumulated and is blocked in the vice gun mouth.

Description

Technical Field

[0001] This utility model relates to the technical field of converter sub-lance systems, and in particular to a quick-disassembly sub-lance scraping device. Background Technology

[0002] In the core smelting process of converter steelmaking, the sub-lance system, as a key real-time monitoring device, can dynamically measure core process parameters such as temperature, composition, and liquid level of molten steel in the furnace by inserting special probes with different functions. This provides data support for the control of the steelmaking process, thereby improving the hit rate of the endpoint control of converter steelmaking. It is an important piece of equipment to ensure the stability of steelmaking quality and production efficiency.

[0003] Because the secondary gun system needs to be frequently inserted into the furnace to complete monitoring tasks, a large amount of high-temperature dust, molten slag, and cooled slag powder easily adhere to its surface during operation. These adhering pollutants not only affect the detection accuracy of the secondary gun probe and lead to misjudgment of process parameters, but also directly hinder the normal lifting and lowering operation of the secondary gun, reducing production efficiency. At the same time, if the scattered dust and slag powder are not cleaned up in time, they will cause environmental pollution in the production area and affect the compliance of environmental protection indicators. Currently, the industry generally adopts a passive approach to cleaning contaminants from secondary gun systems, waiting for the accumulated slag and dust on the ground to reach a certain amount before manually cleaning them. This cleaning method has several problems in practical application, as follows: 1. When the slag and powder accumulation in the secondary nozzle and surrounding area is severe, the limited operating range during manual cleaning is due to the dense equipment layout and narrow working space in the converter production site. The cleaning tools cannot fully reach the slag accumulation area, resulting in low cleaning efficiency. Moreover, the operators need to be in cramped postures such as bending over and turning to the side for a long time, which significantly increases the labor intensity.

[0004] 2. During the slag loading process, repeated hoisting operations are required using overhead cranes. Due to safety regulations, the slag hopper storage area must maintain a safe distance from the core production area of ​​the converter smelting. This necessitates the transportation of slag and powder across different areas. Workers must first manually collect the cleaned slag and powder to a temporary storage point, and then the overhead cranes will transport the temporarily stored slag to the distant slag hopper storage area. The entire transportation process involves many steps and is time-consuming, further increasing the difficulty of slag loading and unloading, consuming crane operating time, and indirectly affecting the progress of other production processes.

[0005] 3. Due to the wide variety of contaminants adhering to the secondary guns, different cleaning tools and methods are required. For lumpy, hard slag, tools such as shovels and sledgehammers are needed for breaking and removing it; for powdery dust, brooms are needed for sweeping or compressed air blowing; and for sticky fumes, scrapers are needed to remove them one by one. The diversity of tools not only increases the preparation time and tool management costs before operation, but also requires operators to frequently switch tools, further increasing the labor intensity.

[0006] The secondary nozzle has no limiting device, and the slag and dust after the secondary nozzle exit fall off entirely by gravity, resulting in ash and slag accumulation on the work site; excessive ash and smoke leakage makes it difficult to meet ultra-low emission requirements.

[0007] Currently, some companies are trying to optimize the secondary nozzle by using methods such as ring-shaped metal scrapers, but the following limitations still exist: the structure is fixed, the cost is high, and it is difficult to adapt to high temperature and high dust conditions; the scraper is prone to deformation, which causes scratches on the gun body after long-term use, affecting the service life and increasing the difficulty of cleaning. Utility Model Content

[0008] This invention provides a quick-disassembly secondary gun scraping device, which can effectively solve the problems of material sticking and smoke after secondary gun measurement and the difficulty of equipment replacement.

[0009] To solve the above problems, the technical solution adopted by this utility model is as follows: This quick-disassembly secondary gun scraping device includes a secondary gun channel, a nitrogen sealing seat is connected to the secondary gun channel through a flange, a guide cone is connected to the nitrogen sealing seat, and a frame-type pressure plate assembly is connected to the guide cone. Multiple downward-sloping scraping steel wire ropes are arranged in multiple directions inside the frame-type pressure plate assembly.

[0010] In the above-mentioned quick-disassembly secondary gun scraping device, a more specific technical solution can be: the frame-type pressure plate assembly consists of a fixed base and a fixed pressure plate, and one end of multiple scraping steel wire ropes is evenly pressed between each side plate of the fixed base and the fixed pressure plate. The other end of the scraping steel wire ropes extends into the central channel of the frame-type pressure plate assembly, and the fixed base and the fixed pressure plate are fastened together by fasteners.

[0011] In some possible implementations, the top of the guide cone is provided with ear plates at opposite ends, and the fixed base is provided with connecting ear plates at positions corresponding to the ear plates of the guide cone on both sides.

[0012] In some possible implementations, the frame-type pressure plate assembly is quadrilateral with its perimeter inclined downwards at 15°. Each side of the frame-type pressure plate assembly is press-fitted with five scraping steel wire ropes. Each side plate of the frame-type pressure plate assembly is fastened to the fixed base and the fixed pressure plate by two connecting screws.

[0013] In some possible implementations, the tail of the scraper wire rope pressed between the frame-type pressure plate assembly is flush with the edge of the fixed pressure plate, and its head is tilted downward and extends into the interior of the secondary gun muzzle. The heads of the scraper wire ropes on both sides of the side plate intersect with the heads of the adjacent scraper wire ropes.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art: 1. Because the frame-type pressure plate of this device has multiple downward-sloping slag scraping wire ropes arranged in multiple directions, it forms a comprehensive wrapping scraping structure for the secondary lance body. Compared with the single rigid scraping surface of the traditional ring-shaped metal scraper, the multi-directionally distributed slag scraping wire ropes can flexibly conform to the surface of the lance body, effectively scraping off blocky hard slag and thoroughly cleaning powdery slag and sticky fumes. It adapts to the cleaning needs of various forms of contaminants on the surface of the secondary lance, greatly improving the thoroughness of cleaning and avoiding the impact of contaminant adhesion on the detection accuracy of the secondary lance probe. Moreover, the flexible contact of the slag scraping wire ropes can avoid contaminant residue and avoid the problem of sticky material and smoke. At the same time, the various components of this device are connected by bolts. When maintenance or replacement of the slag scraping wire ropes is required, only the flange bolts, connecting ear plate connectors or connecting screws need to be removed to quickly complete the disassembly and assembly of the components, greatly shortening the maintenance time, reducing converter downtime losses caused by maintenance of the cleaning device, and improving production efficiency.

[0015] 2. Using a slag scraping wire rope as the scraping component, the slag scraping wire rope has a certain degree of flexibility and elasticity, and can adaptively adjust according to the actual diameter deviation of the auxiliary lance body and the thickness of the contaminant adhesion. This solves the problem that the traditional ring-shaped metal scraper structure is fixed and cannot adapt to the deviation of the lance body and the change of contaminant thickness. At the same time, the slag scraping wire rope is not easily deformed or aged under high temperature and high dust conditions, and can maintain stable scraping performance for a long time. This avoids the reduction of scraping effect due to harsh working conditions, ensures that the auxiliary lance is always in a clean state during continuous smelting, and improves the hit rate of the converter steelmaking endpoint control.

[0016] 3. This device replaces manual cleaning with automated scraping, avoiding the need for operators to enter the narrow and high-risk secondary gun working area. It fundamentally eliminates the risks of high-temperature burns, occupational health risks, and mechanical injuries faced during manual cleaning, ensuring the personal safety of operators and reducing the pressure on enterprise safety production management. At the same time, the nitrogen sealing seat can effectively block the leakage of smoke and dust when the secondary gun is pulled out, further reducing the spread of smoke and dust in the production area and providing double safety protection for the working environment.

[0017] 4. The guide cone and frame-type pressure plate assembly of this device form a directional collection channel for pollutants. The scraped slag and dust can slide down the downward-sloping frame-type pressure plate assembly to the designated collection area, avoiding the problem of ash accumulation and secondary dust caused by pollutants falling randomly on the work site in traditional manual cleaning. At the same time, the sealing effect of the nitrogen sealing seat and the efficient scraping of the slag scraping wire rope can significantly reduce the phenomenon of ash and smoke leakage.

[0018] 5. Compared to the problem that the rigid contact between the traditional ring-shaped metal scraper and the gun body can easily cause scratches and damage to the gun body, this device uses a scraping steel wire rope as the scraping component. Its flexible contact characteristics can avoid hard friction with the surface of the gun body, effectively protecting the secondary gun body from scratches, preventing a vicious cycle in which contaminants are more easily attached due to gun body damage, extending the service life of the secondary gun, and reducing the replacement cost of the secondary gun equipment.

[0019] 6. The frame-type pressure plate assembly adopts a quadrilateral structure with a 15° downward slope on all sides. This ensures the structural strength of the assembly, stably supporting the scraping operation of the slag-scraping wire rope. The inclined design also guides the contaminants to slide down in a specific direction, preventing them from accumulating inside the assembly and affecting the scraping effect. At the same time, the end of each slag-scraping wire rope is firmly pressed and secured to the fixed pressure plate by a fixed base, ensuring a strong connection that is not easy to fall off. This ensures that the device maintains structural stability during long-term, high-frequency scraping operations, reduces the probability of failure, and improves the overall durability of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a structural schematic diagram of the frame-shaped pressure plate assembly of this utility model.

[0022] Figure 3 This is the front view of the frame-shaped pressure plate assembly of this utility model. Figure 4 This is a top view of the frame-shaped pressure plate assembly of this utility model.

[0023] Figure 5 This is the front view of the present invention.

[0024] Figure 6 This is a top view of the present invention.

[0025] Explanation of serial numbers: Sub-gun channel 1, nitrogen sealing seat 2, guide cone 3, ear plate 3-1, fixed base 4, connecting ear plate 4-1, scraper wire rope 5, fixed pressure plate 6, connecting screw 7. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more readily understood, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figure 1The embodiment shown proposes a quick-disassembly secondary gun scraping device, including a secondary gun channel 1. A nitrogen sealing seat 2 is connected to the secondary gun channel via a flange. The nitrogen seal provides sealing and flushing after the slag falls, preventing slag accumulation and blockage at the secondary gun nozzle. A guide cone 3 is connected to the nitrogen sealing seat, and a frame-type pressure plate assembly is connected to the guide cone 3. The frame-type pressure plate assembly has multiple downward-sloping scraping steel wire ropes 5 arranged in multiple directions inside. Using scraping steel wire ropes as scrapers not only applies external force through its own elasticity but also maximizes the protection of the gun body from secondary damage. The combination of multi-angle scraping steel wire ropes increases the scraping area and improves scraping efficiency. The frame-type pressure plate assembly consists of a fixed base 4 and a fixed pressure plate 6. One end of multiple scraping steel wire ropes 5 is evenly pressed between each side plate of the fixed base 4 and the fixed pressure plate 6. The other end of the scraping steel wire ropes 5 extends into the central channel of the frame-type pressure plate assembly. The fixed pressure plates 6 are fastened together by fasteners, namely connecting screws 7. The frame-type pressure plate assembly is quadrilateral, with its sides inclined downwards at 15°, similar to a funnel-shaped structure. When the auxiliary gun moves upward, it acts as a backstop, increasing the scraping elasticity of the slag-scraping wire ropes and maximizing the scraping of slag. Each side plate of the frame-type pressure plate assembly is pressed with the tail of five slag-scraping wire ropes 5. Each side plate of the frame-type pressure plate assembly is connected to the fixed base 4 and the fixed pressure plate 6 by two connecting screws 7. The scraping wire rope 5 is fastened; its tail end, pressed between the frame-type pressure plate assembly, is flush with the edge of the fixed pressure plate 6, with its head tilting downwards and extending into the secondary nozzle. The heads of the scraping wire ropes on both sides of the side plate intersect with the heads of the adjacent scraping wire ropes. Ear plates 3-1 are provided on the top of the guide cone 3 on opposite sides. Connecting ear plates 4-1 are provided on both sides of the fixed base 4 at positions corresponding to the ear plates 3-1 of the guide cone 3. The ear plates 3-1 and connecting ear plates 4-1 are connected and fixed by bolts. This device uses bolt connections, connecting to the guide cone with two bolts. In case of time constraints, rapid overall replacement is possible. The scraping wire rope is fixed by bolts to the base via the pressure plate. The four perimeter plates of the fixed pressure plate can be fixed independently, allowing for individual replacement of the scraping wire rope on a single side plate, maximizing cost savings.

[0029] The entire device consists of a secondary gun channel as its main structure, which is inserted into the secondary gun nozzle at its lower end and connected via a flange. The flange is secured by eight bolts. At the upper end, a stacked flange connects the nitrogen sealing seat to the secondary gun channel, with the bottom of the nitrogen sealing seat resting on the upper flange of the secondary gun channel. The upper end of the nitrogen sealing seat is connected to the guide cone via a flange. The upper ear plate of the guide cone is fixed to the connecting ear plate of the fixed base via two bolts. The fixed base is inclined downwards at a 15° angle, increasing the scraping elasticity of the scraping wire rope when the secondary gun moves upwards. The connecting bolts secure the scraping wire rope to the inlet via a fixing plate. The scraping wire rope uses a diameter of 6×19+FC20mm and a length of 200mm. This specification has high hardness, which is beneficial for scraping slag.

[0030] In daily production, the nitrogen sealing seat is responsible for sealing the holes. The nitrogen sealing seat body has a nitrogen gas pipeline for gas supply and sealing. By blowing in nitrogen, the smoke and dust are suppressed and nitrogen is sealed.

[0031] During the operation of this device, when the secondary lance exits the secondary lance nozzle, the nitrogen sealing seat, the guide cone, and the slag scraping wire rope are all in working condition. The slag scraping wire rope scrapes away large slag and powder pieces and guides them into the furnace through the guide cone. The nitrogen sealing seat suppresses the smoke and dust with nitrogen gas, preventing it from escaping through the secondary lance nozzle.

[0032] When it is necessary to replace a deformed or failed slag scraping system or nitrogen sealing system, first turn off the nitrogen gas, then remove the fixing screws of the affected part, and then reinstall the system components one by one. The process is quick, safe and convenient. The equipment is lightweight and requires little manpower. The system components are simple and efficient and can be replaced individually without welding or cutting. The slag scraping wire rope can be reversed for quick installation.

[0033] When the entire system fails, a new system can be assembled online, which can continuously and efficiently suppress slag, powder, and dust. Compared with the traditional manual cleaning of slag, powder, and dust, the efficiency and safety of the operation are greatly improved.

[0034] After this device was put into use in the smelting area, the problem of slag accumulation on the secondary gun body was greatly improved. After the slag was scraped off, it could fall directly into the furnace, reducing the amount of slag accumulation on the platform. The number of times the slag was cleaned was reduced from three times a week to once a week, and the amount of smoke from the slag decreased by 60%. After the slag scraping wire rope was worn, it could be quickly and effectively replaced by replacing the entire slag scraping device with spare parts.

[0035] This utility model can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model shall be included within the protection scope of this utility model.

Claims

1. A quick-release secondary gun scraping device, characterized in that: It includes a secondary gun channel (1), a nitrogen sealing seat (2) connected to the secondary gun channel via a flange, a guide cone (3) connected to the nitrogen sealing seat, and a frame-type pressure plate assembly connected to the guide cone (3). The frame-type pressure plate assembly has multiple downward-sloping scraping wire ropes (5) arranged in multiple directions inside it.

2. The quick-release secondary gun scraping device according to claim 1, characterized in that: The frame-type pressure plate assembly consists of a fixed base (4) and a fixed pressure plate (6). One end of multiple scraper wire ropes (5) is evenly pressed between each side plate of the fixed base (4) and the fixed pressure plate (6). The other end of the scraper wire ropes (5) extends into the middle channel of the frame-type pressure plate assembly. The fixed base (4) and the fixed pressure plate (6) are fastened together by fasteners.

3. The quick-release secondary gun scraping device according to claim 2, characterized in that: The top of the guide cone (3) is provided with ear plates (3-1) on both sides, and the fixed base (4) is provided with connecting ear plates (4-1) on both sides corresponding to the ear plates (3-1) of the guide cone (3).

4. The quick-release secondary gun scraping device according to claim 2, characterized in that: The frame-type pressure plate assembly is quadrilateral with a downward inclination of 15° around its perimeter. Each side plate of the frame-type pressure plate assembly is press-fitted with five scraping steel wire ropes (5). Each side plate of the frame-type pressure plate assembly is fastened to the fixed base (4) and the fixed pressure plate (6) by two connecting screws (7).

5. The quick-release secondary gun scraping device according to claim 3, characterized in that: The frame-type pressure plate assembly is quadrilateral with a downward inclination of 15° around its perimeter. Each side plate of the frame-type pressure plate assembly is press-fitted with five scraping steel wire ropes (5). Each side plate of the frame-type pressure plate assembly is fastened to the fixed base (4) and the fixed pressure plate (6) by two connecting screws (7).

6. The quick-release secondary gun scraping device according to claim 4, characterized in that: The tail of the scraper wire rope pressed between the frame-type pressure plate assembly is flush with the edge of the fixed pressure plate (6), and its head is tilted downward and extends into the sub-gun muzzle. The heads of the scraper wire ropes on both sides of the side plate intersect with the heads of the adjacent scraper wire ropes.

7. The quick-release secondary gun scraping device according to claim 5, characterized in that: The tail of the scraper wire rope pressed between the frame-type pressure plate assembly is flush with the edge of the fixed pressure plate (6), and its head is tilted downward and extends into the sub-gun muzzle. The heads of the scraper wire ropes on both sides of the side plate intersect with the heads of the adjacent scraper wire ropes.

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