A device for cleaning a converter mouth of slag
By designing a tight fit between the crushing head and the toothed plate, and a collection mechanism, the problems of discontinuous slag stripping and slag scattering in traditional devices have been solved, achieving efficient cleaning and safe collection of slag at the converter mouth.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN GREAT DONG HAI IND GRP CO LTD
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-21
AI Technical Summary
The rigid crushing head of the traditional converter mouth slag cleaning device is difficult to fully fit the curvature of the mouth, resulting in discontinuous slag removal and serious residue. Moreover, the removed slag is easy to scatter and accumulate, causing environmental pollution and the risk of high-temperature burns.
A cleaning device including a crushing head, a toothed plate, and a collection mechanism was designed. Through the mechanical transmission of the telescopic arm and the drive arm, the crushing head and the toothed plate are tightly fitted to achieve continuous stripping of slag. The slag is collected in a concentrated manner by the collection mechanism to prevent it from scattering.
It achieves continuous stripping and centralized collection of slag, reduces slag adhesion, reduces downtime for maintenance, avoids environmental pollution and the risk of high-temperature burns, and improves cleaning efficiency.
Smart Images
Figure CN224530924U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of metallurgical machinery technology, and specifically relates to a device for cleaning slag accumulated at the converter mouth. Background Technology
[0002] The converter slag removal device is a specialized piece of equipment in the metallurgical industry. It is mainly used for the removal of refractory linings in facilities such as steelmaking furnaces and ladles. The main products include the LB series fully hydraulic furnace dismantling machine and the CL series tracked special equipment. This equipment can be equipped with various accessories such as hydraulic hammers, reamers, and single hooks. Its operating range covers processes such as taphole drilling and reaming, furnace mouth slag removal, and permeable brick removal. It is suitable for working conditions of converters under 120 tons and ladles under 320 tons.
[0003] However, the rigid crushing head of the traditional converter mouth slag cleaning device is difficult to fully fit the curvature of the mouth, resulting in discontinuous slag removal and serious residue. At the same time, the removed slag is easy to scatter and accumulate at the work site, which not only causes serious environmental pollution, but also hinders the movement of equipment, forcing workers to frequently intervene in cleaning, which increases labor intensity and poses a risk of high temperature burns.
[0004] To address the problems mentioned above, a device for cleaning slag buildup at the converter mouth is proposed. Utility Model Content
[0005] The purpose of this utility model is to provide a cleaning device for slag accumulation at the converter mouth, which has the advantages of fitting snugly to the cleaning mouth and facilitating slag collection.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a cleaning device for slag accumulation at the converter mouth, comprising a crushing head, a flange fixedly sleeved on the surface of the crushing head, a connecting plate bolted to the top and bottom of the flange, a toothed plate welded to the end of the connecting plate away from the flange, teeth provided on the outer side of the toothed plate, a driving arm fixedly sleeved on the left side of the crushing head, a telescopic arm provided on the left side of the driving arm, a collecting mechanism provided at the front and rear ends of the right side of the telescopic arm, and a driving mechanism provided on the left side of the bottom of the telescopic arm.
[0007] The above technical solution involves the following steps: During operation, the overall operating radius is adjusted by the mechanical extension and retraction of the telescopic arm, bringing the crushing head and toothed plate closer to the slag accumulation area at the converter mouth. The drive arm drives the crushing head through mechanical transmission. At this time, the flange and the connecting plate form a rigid connection structure, transmitting the power of the drive arm to the toothed plate. When the crushing head contacts the slag, it can crush the harder slag blocks through rotation or impact. Simultaneously, the teeth on the outer side of the toothed plate cut into the slag layer with the help of the drive arm, scraping away the slag adhering to the furnace mouth using the shearing and peeling action of the teeth. Since the toothed plate is fixed to the upper and lower sides of the flange through the connecting plate, it can cover the slag accumulation area around the crushing head, complementing the crushing head in processing... The hard core slag is removed by the toothed plate, which peels off the loose slag at the edges and the residue after crushing. During operation, the rigid connection between the flange and the connecting plate ensures that the toothed plate is under stable force and avoids structural deformation caused by the reaction force of the slag. By manually controlling the extension and retraction of the telescopic arm and the movement angle of the drive arm, targeted cleaning of slag at different positions of the furnace mouth can be achieved, and the crushing and peeling of the slag is finally completed. It ensures that the scraper adheres to the furnace mouth and achieves continuous peeling of the slag layer, effectively reducing slag adhesion. The equipment can flexibly switch between crushing and scraping modes. The overall solution retains the original crushing function and solves the problems of poor adhesion and low efficiency in traditional cleaning through targeted optimization, which greatly reduces downtime maintenance time.
[0008] The present invention is further configured such that the collecting mechanism includes a connecting rod, the connecting rod is bolted to the front end and the rear end of the telescopic arm on the right side of the surface, a guide plate is bolted to the bottom of the opposite side of the two connecting rods, a collecting box is bolted to the left side of the guide plate, and an opening is provided at the top right side of the collecting box.
[0009] The above technical solution employs a collection mechanism. A connecting rod fixes the guide plate and collection box to the front and rear ends of the right side of the telescopic arm, moving synchronously with the telescopic arm's extension and retraction. This ensures that the guide plate is positioned below the path of the falling slag during the operation of the crushing head and toothed plate. When the slag generated from crushing and stripping falls, the guide plate catches it. Under gravity, the slag slides down the guide plate and enters the collection box through an opening on the left side of the guide plate. When the slag in the collection box reaches a certain amount, it can be collected and cleaned in a timely manner, preventing slag from scattering into the working environment. The stripped slag falls to the bottom for collection, facilitating subsequent cleaning by workers and preventing severe on-site pollution that could obstruct the movement of the device. This facilitates centralized slag processing, avoids frequent worker intervention for cleaning, reduces labor intensity and the risk of burns, and is particularly suitable for high-frequency slag removal operations.
[0010] The present invention is further configured such that the drive mechanism includes a drive host, which is bolted to the left side of the bottom of the telescopic arm, and a driver's cab is provided at the rear end of the right side of the drive host.
[0011] The above technical solution is adopted as follows: by setting up a drive mechanism, the drive host serves as the power source of the entire device. It establishes a power connection with the telescopic arm and drive arm through mechanical transmission components. The cab provides operating space for the operator. The operator can control the direction and magnitude of the power output of the drive host by manually operating mechanical control levers, valves and other components in the cab, thereby adjusting the telescopic arm's extension and retraction, the drive arm's movement angle and the crushing head's operating status.
[0012] The present invention is further configured such that the toothed plate is shorter than the crushing head.
[0013] By adopting the above technical solution, by setting it to be shorter, it is possible to prevent the toothed plate from affecting the breakage head and causing damage.
[0014] The present invention is further configured such that the outer side of the toothed plate is arc-shaped.
[0015] The above technical solution, by setting it to an arc shape, can better fit the converter opening.
[0016] The present invention is further configured such that a door is rotatably connected to the left side of the collection box via a hinge.
[0017] The above technical solution involves a door that can be easily opened to clean the slag stored in the collection box.
[0018] The present invention is further configured such that the guide plate is inclined.
[0019] The above technical solution allows the scraped-off slag to easily enter the collection box via a guide plate by being set at an angle.
[0020] The present invention is further configured such that tracks are provided at the bottom of the front and back sides of the drive host.
[0021] The above technical solution, by incorporating tracks, facilitates the movement of the device.
[0022] In summary, this utility model has the following beneficial effects:
[0023] 1. This utility model ensures that the slag is in close contact with the furnace opening during slag scraping, thereby achieving continuous peeling of the slag layer, effectively reducing slag adhesion, and enabling the equipment to flexibly switch between crushing and slag scraping modes. The overall solution retains the original crushing function and solves the problems of poor contact and low efficiency in traditional cleaning through targeted optimization, greatly reducing downtime for maintenance.
[0024] 2. This utility model allows the stripped slag to fall to the bottom for collection, which facilitates subsequent cleaning by staff, prevents serious on-site pollution that could obstruct the movement of the device, facilitates centralized processing of slag, avoids frequent intervention by staff for cleaning, reduces labor intensity and the risk of burns from high temperatures, and is especially suitable for high-frequency slag removal operations. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a partial front sectional view of the structure of this utility model;
[0027] Figure 3 This is a utility model Figure 2 An enlarged schematic diagram of the structure at point A in the middle.
[0028] Reference numerals: 1. Crusher head; 2. Flange; 3. Connecting plate; 4. Tooth plate; 5. Tooth; 6. Drive arm; 7. Telescopic arm; 8. Connecting rod; 9. Guide plate; 10. Collection box; 11. Opening; 12. Drive unit; 13. Cabin; 14. Door; 15. Track. Detailed Implementation
[0029] The present invention will be further described in detail below with reference to the accompanying drawings.
[0030] Example 1:
[0031] refer to Figure 1 , Figure 2 , Figure 3A device for cleaning slag accumulation at the converter mouth includes a crushing head 1 with a diameter of 150-300mm, made of ZG35CrMo wear-resistant cast steel with a surface hardness of HRC45-50, suitable for converter slag hardness of up to 120 tons, and a Brinell hardness of 200-300HB. A flange 2 is fixedly sleeved on the surface of the crushing head 1. A connecting plate 3 is bolted to the top and bottom of the flange 2. A toothed plate 4 is welded to the end of the connecting plate 3 away from the flange 2. The toothed plate 4 is made of 10-15mm thick Q355B steel plate. The outer side of plate 4 is provided with teeth 5, the teeth 5 are 10-20mm high, 30-50mm apart, and the sawing angle is 45°, ensuring shearing force to cut into the slag layer thickness of 50-200mm. A drive arm 6 is fixedly sleeved on the left side of the crushing head 1, and a telescopic arm 7 is provided on the left side of the drive arm 6. The front and rear ends of the right side of the telescopic arm 7 are provided with collecting mechanisms, and the bottom left side of the telescopic arm 7 is provided with a driving mechanism. During operation, the overall working radius is adjusted by the mechanical extension and retraction of the telescopic arm 7, so that the crushing head 1 and the toothed plate can be aligned. 4. Near the slag accumulation area at the converter mouth, the drive arm 6 drives the crushing head 1 to move via mechanical transmission. At this time, the flange 2 and the connecting plate 3 form a rigid connection structure, transmitting the power of the drive arm 6 to the toothed plate 4. When the crushing head 1 contacts the slag, it can crush the harder slag blocks through rotation or impact. At the same time, the teeth 5 on the outer side of the toothed plate 4 cut into the slag layer with the driving force of the drive arm 6. The shearing and peeling action of the teeth 5 is used to scrape off the slag attached to the furnace mouth. Since the toothed plate 4 is fixed to the upper and lower sides of the flange 2 through the connecting plate 3, it can cover the slag area around the crushing head 1, complementing the crushing head 1. The crushing head 1 handles the hard core slag, while the toothed plate 4 peels off the loose slag at the edges and the residue after crushing. During the operation, the rigid connection between the flange 2 and the connecting plate 3 ensures that the toothed plate 4 is under stable force, avoiding structural deformation caused by the reaction force of the slag. By manually controlling the extension and retraction of the telescopic arm 7 and the movement angle of the drive arm 6, targeted cleaning of slag at different positions at the furnace mouth can be achieved, ultimately completing the crushing and peeling operation of the slag.
[0032] refer to Figure 1 , Figure 2 The drive mechanism includes a drive host 12, which is bolted to the left side of the bottom of the telescopic boom 7. A driver's cab 13 is set at the rear end of the right side of the drive host 12. With the drive mechanism, the drive host 12 serves as the power source of the entire device. It establishes a power connection with the telescopic boom 7 and the drive arm 6 through a mechanical transmission component. The driver's cab 13 provides an operating space for the operator. The operator can control the direction and magnitude of the power output of the drive host 12 by manually operating mechanical control levers, valves 14 and other components in the driver's cab 13, thereby adjusting the telescopic boom 7's telescopic movement, the drive arm 6's movement angle and the working status of the crushing head 1.
[0033] refer to Figure 1 , Figure 2 , Figure 3 The toothed plate 4 is set to be shorter than the crushing head 1. By setting it to be shorter, the toothed plate 4 can prevent the crushing head 1 from being damaged. The length of the toothed plate 4 is 150-100mm shorter than the crushing head 1, ensuring that the crushing head 1 contacts the hard slag first, and the toothed plate 4 then peels off the edge residue, avoiding interference between the two operations.
[0034] refer to Figure 1 , Figure 2 , Figure 3 The outer side of the toothed plate 4 is set to be arc-shaped, which allows it to fit the converter mouth better.
[0035] refer to Figure 1 , Figure 2 The drive unit 12 has tracks 15 on the bottom of the front and back sides, which facilitates the movement of the device.
[0036] Example 2:
[0037] refer to Figure 1 , Figure 2 A device for cleaning slag buildup at the converter mouth, comprising a collection mechanism including connecting rods 8, which are bolted to the front and rear ends of the telescopic arm 7 on the right side of the arm. Guide plates 9 are bolted to the bottom of opposite sides of the two connecting rods 8. The guide plates 9 are made of 16Mn high-temperature resistant steel plate with a temperature resistance ≥600℃ and a length of 800-1200mm. A collection box 10 with a volume of 0.5-1m³ is bolted to the left side of the guide plate 9. 3 The collection box 10 is constructed from 5mm thick Q235 steel plates. An opening 11 is provided on the top right side of the collection box 10. The connecting rod 8 fixes the guide plate 9 and the collection box 10 to the front and rear ends of the right side of the telescopic arm 7. The guide plate 9 moves synchronously with the telescopic arm 7 as it extends and retracts, ensuring that the guide plate 9 is below the path of the slag falling when the crushing head 1 and the toothed plate 4 are in operation. When the slag produced by crushing and stripping falls, the guide plate 9 catches the falling slag. The slag slides down the guide plate 9 under the action of gravity and enters the collection box 10 through the opening 11 on the left side of the guide plate 9 to complete the collection. When the slag in the collection box 10 reaches a certain amount, it can be cleaned up.
[0038] refer to Figure 2 The left side of the collection box 10 is connected to a door 14 via a hinge. The door 14 can be easily opened to clean the slag stored in the collection box 10. The door 14 is locked with a high-temperature resistant spring pin.
[0039] refer to Figure 1 , Figure 2 The guide plate 9 is set to be inclined. By setting it to be inclined, the scraped slag can be easily scraped into the collection box 10 through the guide plate 9, with an inclination angle of 30°-45°.
[0040] The drive unit model 12 is LBC120. Mainstream models offer diesel engines, such as Cummins 6BTA5.9-C180 with a power of 132kW, and can operate in dual modes with electric motors, such as a 110kW variable frequency motor, to adapt to scenarios with unstable power supply in the workshop. The LBC120 pure electric motor model uses CATL power batteries, with a range of 6 hours and an hourly power consumption of 21 kWh. It uses a Rexroth A8V slant shaft variable pump with a system pressure of 28MPa to achieve on-demand fuel supply and energy-saving control. The pilot operating pressure is 2.7-3.5MPa, and the operating accuracy is ±2°. The cab is equipped with a CAN bus control panel that displays parameters such as oil temperature (40-60℃), hydraulic pressure, and engine speed in real time. In case of abnormalities, it automatically triggers overload protection.
[0041] Brief description of operation: During operation, the overall working radius is adjusted by the mechanical extension and retraction of the telescopic arm 7, bringing the crushing head 1 and the toothed plate 4 close to the slag accumulation area at the converter mouth. The drive arm 6 drives the crushing head 1 to move through mechanical transmission. At this time, the flange 2 and the connecting plate 3 form a rigid connection structure, transmitting the power of the drive arm 6 to the toothed plate 4. When the crushing head 1 contacts the slag, it can crush the harder slag blocks through rotation or impact. At the same time, the teeth 5 on the outer side of the toothed plate 4 cut into the slag layer with the driving force of the drive arm 6. The shearing and peeling action of the teeth 5 scrapes off the slag attached to the furnace mouth. Since the toothed plate 4 is fixed to the upper and lower sides of the flange 2 through the connecting plate 3, it can cover the slag accumulation area around the crushing head 1, complementing the crushing head 1. The crushing head 1 handles the hard core slag, while the toothed plate 4 peels off the loose slag at the edges and the crushed slag. During operation, the rigid connection between flange 2 and connecting plate 3 ensures the stability of toothed plate 4 under stress, preventing structural deformation caused by the reaction force of slag. By manually controlling the extension and retraction of telescopic arm 7 and the movement angle of drive arm 6, targeted cleaning of slag at different positions of the furnace opening can be achieved, ultimately completing the crushing and stripping of slag. Connecting rod 8 fixes guide plate 9 and collection box 10 to the front and rear ends of the right side of telescopic arm 7, moving synchronously with the extension and retraction of telescopic arm 7, ensuring that when crushing head 1 and toothed plate 4 are operating, guide plate 9 is below the path of slag falling. When the slag generated by crushing and stripping falls, guide plate 9 catches the falling slag. Under the action of gravity, the slag slides down along guide plate 9 and enters collection box 10 through opening 11 on the left side of guide plate 9 for collection. When the slag in collection box 10 reaches a certain amount, it can be cleaned up.
[0042] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.
[0043] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A device for cleaning slag buildup at the converter mouth, comprising a crushing head (1), characterized in that: A flange (2) is fixedly sleeved on the surface of the crushing head (1). A connecting plate (3) is bolted to the top and bottom of the flange (2). A toothed plate (4) is welded to the end of the connecting plate (3) away from the flange (2). Teeth (5) are provided on the outer side of the toothed plate (4). A drive arm (6) is fixedly sleeved on the left side of the crushing head (1). A telescopic arm (7) is provided on the left side of the drive arm (6). A collecting mechanism is provided at the front and rear ends of the right side of the telescopic arm (7). A drive mechanism is provided on the left side of the bottom of the telescopic arm (7).
2. The device for cleaning slag accumulation at the converter mouth according to claim 1, characterized in that: The collection mechanism includes a connecting rod (8), which is bolted to the front and rear ends of the telescopic arm (7) on the right side of the surface. A guide plate (9) is bolted to the bottom of the opposite side of the two connecting rods (8). A collection box (10) is bolted to the left side of the guide plate (9). An opening (11) is provided on the top right side of the collection box (10).
3. The device for cleaning slag accumulation at the converter mouth according to claim 1, characterized in that: The drive mechanism includes a drive host (12), which is bolted to the left side of the bottom of the telescopic arm (7), and a driver's cab (13) is provided at the rear end of the right side of the drive host (12).
4. The device for cleaning slag accumulation at the converter mouth according to claim 1, characterized in that: The toothed plate (4) is configured to be shorter than the crushing head (1).
5. The device for cleaning slag accumulation at the converter mouth according to claim 4, characterized in that: The outer side of the toothed plate (4) is set to be arc-shaped.
6. The device for cleaning slag accumulation at the converter mouth according to claim 2, characterized in that: The left side of the collection box (10) is connected to a door (14) via a hinge.
7. The device for cleaning slag accumulation at the converter mouth according to claim 2, characterized in that: The guide plate (9) is set in an inclined position.
8. The device for cleaning slag accumulation at the converter mouth according to claim 3, characterized in that: The drive unit (12) has tracks (15) on the bottom of its front and back sides.