A device for making mud sleeves at blast furnace tapholes and a method for making mud sleeves.

Abstract

This invention discloses a device and method for manufacturing mud sleeves at blast furnace tapholes, comprising a moving trolley, a horizontal feeding mechanism mounted on the moving trolley, a lifting mechanism mounted on the horizontal feeding mechanism, a mud sleeve drilling and grinding mechanism mounted on the lifting mechanism, and a mud extrusion and molding mechanism mounted on the moving trolley. Using the above technical solution, rapid loading and mechanical extrusion can be achieved, facilitating the parallel and synchronous grinding and cleaning of residual mud sleeves with double drill rods. This invention can be effectively adjusted according to actual conditions, facilitating the hoisting, movement, and fixing of the device. The mud sleeve manufacturing process is highly efficient and protects the initial molding process.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical technology, and in particular relates to a device for making mud sleeves at blast furnace tapholes and a method for making mud sleeves. Background Technology

[0002] As is well known, during the blast furnace tapping process, the high-speed flow of molten iron exerts a significant scouring force on the taphole, requiring protection from a mud sleeve. Due to the short tapping intervals, the manufacturing time for the mud sleeve is critical, and the quality requirements are obvious. Therefore, a method is needed to improve manufacturing quality and reduce time consumption. Furthermore, the high temperature and dusty environment near the taphole pose significant challenges to manual labor. Based on this, a blast furnace mud sleeve manufacturing device is designed. This device will not only save labor and time but also prevent mud waste, ensuring smooth blast furnace production. Therefore, designing and developing a blast furnace mud sleeve manufacturing device is both a production requirement and an operational necessity. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides an apparatus and method for rapidly and with high quality completing the fabrication of clay sleeves.

[0004] The present invention is implemented as follows: a blast furnace taphole mud sleeve making device, comprising a moving trolley, a horizontal feeding mechanism mounted on the moving trolley, a lifting mechanism mounted on the horizontal feeding mechanism, a mud sleeve drilling and grinding mechanism mounted on the lifting mechanism, and a mud extrusion molding mechanism mounted on the trolley.

[0005] Preferably, the horizontal feed mechanism includes a longitudinal linear guide rail mounted on the upper surface of the moving trolley, a longitudinal sliding block mounted on the longitudinal linear guide rail, a first lead screw nut installed inside the longitudinal sliding block, a longitudinal lead screw threaded through the first lead screw nut, both ends of the longitudinal lead screw being flush with the upper surface of the moving trolley, and one end of the longitudinal lead screw being connected to a longitudinal hydraulic motor; a longitudinal moving plate mounted on the longitudinal sliding block, a transverse linear guide rail mounted on the longitudinal moving plate, a transverse sliding block mounted on the transverse linear guide rail, a second lead screw nut installed inside the transverse sliding block, a transverse lead screw threaded through the second lead screw nut, both ends of the transverse lead screw being flush with the upper surface of the longitudinal moving plate, and one end of the longitudinal lead screw being connected to a transverse hydraulic motor; and a lifting mechanism mounted on the transverse sliding block.

[0006] Preferably, the lifting mechanism includes a lifting cylinder mounted on a slider, and the upper end of the lifting cylinder is connected to a lifting platform.

[0007] Preferably, the mud sleeve drilling and grinding mechanism includes a hydraulic motor, which is mounted on a lifting platform via a mounting bracket. The lifting platform is equipped with a support frame, on which two parallel drill rods are horizontally mounted. The hydraulic motor is connected to the drill rods via a gear pair and drives the drill rods to rotate synchronously.

[0008] Preferably, a damper is installed between the bottom of the support frame and the lifting platform.

[0009] Preferably, the mud extrusion molding mechanism includes a hydraulic motor extension shaft, which is mounted on a moving trolley. An output gear is mounted on the power shaft of the hydraulic motor extension shaft. The output gear meshes with a large gear, which meshes with a first push gear. The first push gear meshes with a rack segment at the tail of a first push rod. A pressure plate is connected to the front end of the first push rod. A second push gear meshes below the large gear. The second push gear meshes with a rack segment at the tail of a second push rod. A pressure plate is connected to the front end of the second push rod. A mud receiving trough corresponding to the blast furnace taphole is installed on the lifting platform at the position corresponding to the pressure plate.

[0010] This invention also discloses a method for manufacturing a mud sleeve at a blast furnace taphole, which uses a blast furnace taphole mud sleeve manufacturing device to clean the old mud sleeve and manufacture the new mud sleeve, specifically including the following steps:

[0011] Cleaning of old mud sleeves: First, the moving trolley is pushed to the blast furnace taphole position, and then the lifting mechanism is used to align the drill rod of the mud sleeve drilling and grinding mechanism with the old mud sleeve. Then, the servo motor of the horizontal feed mechanism is started, and the drill rod of the mud sleeve drilling and grinding mechanism is fed under the drive of the servo motor. After feeding to the specified stroke, the lifting device is started to carry out the next drill rod stroke until the old mud sleeve is completely cleaned by the drill rod. The lifting mechanism, mud sleeve drilling and grinding mechanism and feed mechanism stop working.

[0012] Clean the site and the inner wall of the blast furnace taphole;

[0013] New mud sleeve fabrication: Align the mud extrusion molding mechanism with the cleaned blast furnace taphole, then activate the horizontal feeding mechanism to ensure the mud receiving trough is tightly fitted around the blast furnace taphole. At this point, the pressure plate is in its initial position. After the mud receiving trough is filled with mud, activate the hydraulic motor extension shaft of the mud extrusion molding mechanism. Driven by the hydraulic motor extension shaft, the pressure plate gradually moves towards the blast furnace taphole at a constant speed until it reaches the set position, at which point it can be withdrawn. The third hydraulic cylinder flips, causing the first and second push rods to simultaneously retract to their initial positions. Finally, after curing, the mud sleeve fabrication is complete.

[0014] The advantages and technical effects of this invention are as follows: The vehicle-mounted mechanism facilitates short-distance adjustment and alignment. The clay is loaded and extruded in a single operation. Rapid solidification and hardening occur due to furnace temperature, saving time and labor. Waste of leftover clay is eliminated. This invention uses a fixed amount of material and a quantitative amount of resin liquid, which is mixed and loaded into the device at once for rapid extrusion molding—a feat impossible to achieve manually. The extrusion process is achieved by a hydraulic motor or manual operation, synchronizing the movement of the first and second push rods. This allows for easy control of the extrusion speed, steady progress, and high reliability. In this invention, the equipment can be used at different temperatures, and the performance of the clay sleeve can be adjusted by adding a novel mixed liquid through the feeding port. This invention enables high-quality clay sleeve manufacturing with effective human assistance, saving labor time and increasing productivity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the installation structure of the mud sleeve drilling and grinding mechanism of the present invention.

[0016] Figure 2 This is a top view of the mud sleeve drilling and grinding mechanism;

[0017] Figure 3 This is a schematic diagram of the clay extrusion molding mechanism of the present invention;

[0018] Figure 4 This is a schematic diagram of the connection structure of the mud receiving tank.

[0019] In the diagram: 1. Moving trolley; 1-1. Servo motor; 2. Horizontal feed mechanism; 2-1. Longitudinal linear guide; 2-2. Longitudinal slider; 2-3. Longitudinal lead screw; 2-4. Longitudinal hydraulic motor; 2-5. Longitudinal moving plate; 2-6. Transverse linear guide; 2-7. Transverse slider; 2-8. Transverse lead screw; 2-9. Transverse hydraulic motor; 3. Lifting mechanism; 3-1. Lifting cylinder; 3-2. Lifting platform; 4. Mud sleeve drilling and grinding mechanism; 4-1. Hydraulic motor; 4-2. Lifting platform; 4-3. Support frame; 4-4. Drill rod; 4-5. Gear pair; 4-6. Damper; 5. Mud extrusion molding mechanism; 5-1. Hydraulic motor extension shaft; 5-2. Output gear; 5-3. Output gear meshing with large gear; 5-4. First push gear; 5-5. First push rod; 5-6. Pressure plate; 5-7. Second push gear; 5-8. Second push rod; 5-9. Mud receiving tank. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] Please see Figures 1 to 4A blast furnace taphole mud sleeve making device includes a mobile trolley 1, which is driven by a servo motor to move; a horizontal feed mechanism 2 mounted on the mobile trolley; a lifting mechanism 3 mounted on the horizontal feed mechanism; a mud sleeve drilling and grinding mechanism 4 mounted on the lifting mechanism; and a mud extrusion and molding mechanism 5 mounted on the lifting mechanism. The device has four lifting points for easy lifting with an electric hoist and rapid deployment.

[0022] Preferably, the horizontal feed mechanism 2 includes a longitudinal linear guide rail 2-1 mounted on the upper surface of the moving trolley, a longitudinal sliding block 2-2 mounted on the longitudinal linear guide rail, a first lead screw nut installed inside the longitudinal sliding block, a longitudinal lead screw 2-3 passing through the first lead screw nut, both ends of the longitudinal lead screw being flatly mounted on the upper surface of the moving trolley, and one end of the longitudinal lead screw being connected to a longitudinal hydraulic motor 2-4; a lifting mechanism 3 is mounted on the longitudinal sliding block.

[0023] The horizontal feed mechanism 2 includes a longitudinal linear guide rail 2-1 mounted on the upper surface of the moving trolley. A longitudinal sliding block 2-2 is mounted on the longitudinal linear guide rail. A first lead screw nut is installed inside the longitudinal sliding block, and a longitudinal lead screw 2-3 is inserted through the first lead screw nut. Both ends of the longitudinal lead screw are flatly mounted on the upper surface of the moving trolley. One end of the longitudinal lead screw is connected to a longitudinal hydraulic motor 2-4. A longitudinal moving plate 2-5 is mounted on the longitudinal sliding block. A transverse linear guide rail 2-6 is mounted on the longitudinal moving plate. A transverse sliding block 2-7 is mounted on the transverse linear guide rail. A second lead screw nut is installed inside the transverse sliding block, and a transverse lead screw 2-8 is inserted through the second lead screw nut. Both ends of the transverse lead screw are flatly mounted on the upper surface of the longitudinal moving plate. One end of the longitudinal lead screw is connected to a transverse hydraulic motor 2-9. A lifting mechanism is mounted on the transverse sliding block. The horizontal feed mechanism can realize transverse and longitudinal movement, meeting the working range of the mud sleeve drilling and grinding mechanism.

[0024] Preferably, the lifting mechanism 3 includes a lifting cylinder 3-1 mounted on the slider, and a lifting platform 3-2 is connected to the upper end of the lifting cylinder. The lifting mechanism realizes the height displacement adjustment of the mud sleeve drilling pin grinding mechanism to meet the height adjustment requirements.

[0025] Preferably, the mud sleeve drilling pin grinding mechanism 4 includes a hydraulic motor 4-1, which is mounted on a lifting platform via a mounting bracket 4-2. A support frame 4-3 is provided on the lifting platform, and two parallel drill rods 4-4 are horizontally mounted on the support frame. The hydraulic motor is connected to the drill rods via a gear pair 4-5 and drives the drill rods to rotate synchronously.

[0026] Preferably, a damper 4-6 is installed between the bottom of the support frame and the lifting platform to provide earthquake resistance.

[0027] Preferably, the mud extrusion molding mechanism 5 includes a hydraulic motor extension shaft 5-1, which is connected to a hydraulic motor 4-1 via a transmission component. The hydraulic motor extension shaft is mounted on a moving trolley. An output gear 5-2 is installed at the power output end of the hydraulic motor extension shaft. The output gear meshes with a large gear 5-3, which meshes with a first push gear 5-4. The first push gear meshes with a rack segment at the tail of a first push rod 5-5. A pressure plate 5-6 is connected to the front end of the first push rod. A second push gear 5-7 meshes below the large gear. The second push gear meshes with a rack segment at the tail of a second push rod 5-8. A pressure plate is connected to the front end of the second push rod. A mud receiving trough 5-9 corresponding to the blast furnace taphole is installed on the lifting platform at the position of the pressure plate. The above-mentioned mud extrusion molding mechanism can realize the molding operation of the mud sleeve after the filling is completed, reducing labor intensity and improving safety.

[0028] This invention also discloses a method for manufacturing a mud sleeve at a blast furnace taphole, which uses a blast furnace taphole mud sleeve manufacturing device to clean the old mud sleeve and manufacture the new mud sleeve, specifically including the following steps:

[0029] Cleaning of old mud sleeves: First, the moving trolley is pushed to the blast furnace taphole position, and then the lifting mechanism is used to align the drill rod of the mud sleeve drilling and grinding mechanism with the old mud sleeve. Then, the servo motor of the horizontal feed mechanism is started, and the drill rod of the mud sleeve drilling and grinding mechanism is fed under the drive of the servo motor. After feeding to the specified stroke, the lifting device is started to carry out the next drill rod stroke until the old mud sleeve is completely cleaned by the drill rod. The lifting mechanism, mud sleeve drilling and grinding mechanism and feed mechanism stop working.

[0030] Clean the site and the inner wall of the blast furnace taphole;

[0031] New mud sleeve fabrication: Align the mud extrusion molding mechanism with the cleaned blast furnace taphole, then activate the horizontal feeding mechanism to ensure the mud receiving trough is tightly fitted around the blast furnace taphole. At this point, the pressure plate is in its initial position. After the mud receiving trough is filled with mud, activate the hydraulic motor extension shaft of the mud extrusion molding mechanism. Driven by the hydraulic motor extension shaft, the pressure plate gradually moves towards the blast furnace taphole at a constant speed until it reaches the set position, at which point it can be withdrawn. The third hydraulic cylinder flips, causing the first and second push rods to simultaneously retract to their initial positions. Finally, the mud sleeve fabrication is completed after curing, which typically takes one month.

[0032] The above technical solution enables rapid mechanical extrusion of materials, facilitates parallel and synchronous grinding and cleaning of residual mud sleeves using double drill rods, and allows for effective adjustment according to actual conditions. It also facilitates hoisting, moving and fixing of the device, and offers advantages such as high efficiency in mud sleeve production and protection of the initial molding process. Furthermore, the power source of this invention uses a homogeneous hydraulic motor, which is conducive to integration and automated control.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blast furnace taphole mud sleeve making device, comprising a moving trolley, a horizontal feeding mechanism mounted on the moving trolley, a lifting mechanism mounted on the horizontal feeding mechanism, a mud sleeve drilling and grinding mechanism mounted on the lifting mechanism, and a mud extrusion molding mechanism mounted on the trolley. The horizontal feed mechanism includes a longitudinal linear guide rail mounted on the upper surface of the moving trolley, a longitudinal sliding block mounted on the longitudinal linear guide rail, a first lead screw nut installed inside the longitudinal sliding block, a longitudinal lead screw threaded through the first lead screw nut, both ends of the longitudinal lead screw being flush with the upper surface of the moving trolley, and one end of the longitudinal lead screw being connected to a longitudinal hydraulic motor; a longitudinal moving plate mounted on the longitudinal sliding block, a transverse linear guide rail mounted on the longitudinal moving plate, a transverse sliding block mounted on the transverse linear guide rail, a second lead screw nut installed inside the transverse sliding block, a transverse lead screw threaded through the second lead screw nut, both ends of the transverse lead screw being flush with the upper surface of the longitudinal moving plate, and one end of the transverse lead screw being connected to a transverse hydraulic motor; and a lifting mechanism mounted on the transverse sliding block. The lifting mechanism includes a lifting cylinder mounted on a slider, and a lifting platform is connected to the upper end of the lifting cylinder; The mud sleeve drilling and grinding mechanism includes a hydraulic motor, which is mounted on a lifting platform via a mounting bracket. The lifting platform is equipped with a support frame, on which two parallel drill rods are horizontally mounted. The hydraulic motor is connected to the drill rods via a gear pair and drives the drill rods to rotate synchronously. The clay extrusion molding mechanism includes a hydraulic motor extension shaft mounted on a mobile trolley. An output gear is mounted on the power shaft of the hydraulic motor extension shaft. The output gear meshes with a large gear, which meshes with a first push gear. The first push gear meshes with a rack segment at the tail of a first push rod. A pressure plate is connected to the front end of the first push rod. A second push gear meshes below the large gear. The second push gear meshes with a rack segment at the tail of a second push rod. A pressure plate is connected to the front end of the second push rod. A clay receiving trough corresponding to the blast furnace taphole is installed on the mobile trolley at the position corresponding to the pressure plate.

2. The blast furnace taphole mud sleeve making device according to claim 1, characterized in that: A damper is installed between the bottom of the support frame and the lifting platform.

3. A method for manufacturing a blast furnace taphole mud sleeve, characterized in that, The blast furnace taphole mud sleeve making device described in any one of claims 1 to 2 is used to complete the cleaning of the old mud sleeve and the making of the new mud sleeve, specifically including the following steps: Cleaning of old mud sleeves: First, the moving trolley is pushed to the blast furnace taphole position, and then the lifting mechanism is used to align the drill rod of the mud sleeve drilling and grinding mechanism with the old mud sleeve. Then, the servo motor of the horizontal feed mechanism is started, and the drill rod of the mud sleeve drilling and grinding mechanism is fed under the drive of the servo motor. After feeding to the specified stroke, the lifting device is started to carry out the next drill rod stroke until the old mud sleeve is completely cleaned by the drill rod. The lifting mechanism, mud sleeve drilling and grinding mechanism and feed mechanism stop working. Clean the site and the inner wall of the blast furnace taphole; New mud sleeve fabrication: Align the mud extrusion molding mechanism with the cleaned blast furnace taphole, then activate the horizontal feeding mechanism to ensure the mud receiving trough is tightly fitted around the blast furnace taphole. At this point, the pressure plate is in its initial position. After the mud receiving trough is filled with mud, activate the hydraulic motor extension shaft of the mud extrusion molding mechanism. Driven by the hydraulic motor extension shaft, the pressure plate gradually moves towards the blast furnace taphole at a constant speed until it reaches the set position, at which point it can be withdrawn. The third hydraulic cylinder flips, causing the first and second push rods to simultaneously retract to their initial positions. Finally, after curing, the mud sleeve fabrication is complete.

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