Waste residue cleaning device for ditch repairing of blast furnace

Abstract

The invention provides a blast furnace ditch repair waste slag cleaning device, which belongs to the technical field of metallurgy and comprises a slag guide steel pipe, two separators, a connecting arm and a first driving part. And the slag guide steel pipe is vertically arranged on the furnace platform. The two partition pieces are hinged to the slag guide steel pipe and distributed at intervals in the vertical direction. Each separator is provided with a buffer part positioned in the slag guide steel pipe and a transmission part positioned outside the slag guide steel pipe, the buffer part can vertically separate the inner cavity of the slag guide steel pipe when being overturned to seal the slag guide steel pipe, and the extension directions of the two transmission parts are opposite. And the connecting arm is hinged between the two transmission parts. The first driving part is connected with any transmission part and is used for driving the two buffering parts to alternately pitch and turn over, so that the waste slag falls down along the slag guide steel pipe in a segmented and intermittent manner. According to the waste slag cleaning device for ditch repairing of the blast furnace, long-distance free falling motion is divided into multiple sections of short-distance falling, kinetic energy accumulated by waste slag is attenuated, and the situation that the carriage is damaged due to falling impact of the waste slag is avoided.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical technology, and more specifically, relates to a device for cleaning blast furnace ditch waste slag. Background Technology

[0002] In blast furnace ironmaking, the main trough in front of the furnace is subjected to high-temperature molten iron erosion and chemical corrosion over a long period, requiring regular shutdowns for maintenance or replacement. This maintenance process generates a large amount of solid waste, mainly consisting of fragments of broken refractory materials and solidified slag-iron mixtures. Timely and efficient removal of this waste is crucial for ensuring the rapid resumption of blast furnace production and is also an important aspect of safety and environmental management at the ironmaking site.

[0003] Currently, the common method used in the industry for waste slag cleaning involves installing a vertical slag guide pipe on the side of the furnace platform corresponding to the maintenance position of the main iron trough. During cleaning operations, the transport vehicle is parked below the slag guide pipe, with the discharge port at the lower end of the pipe aligned with the top of the vehicle's cargo compartment. Subsequently, workers operate an excavator to dump the waste slag into the feed port at the upper end of the slag guide pipe, allowing the waste slag to fall along the pipe into the cargo compartment below.

[0004] However, the waste slag falls from the height of the furnace platform along the slag guide steel pipe, and the impact force when it reaches the car body is relatively large. This can easily cause deformation or even cracking of the car body floor and side walls. Moreover, the violent impact may cause the waste slag to splash out of the car body, which will have an adverse impact on the surrounding working environment. Summary of the Invention

[0005] The purpose of this invention is to provide a blast furnace ditch waste slag cleaning device, which aims to reduce the impact force when the waste slag falls.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a blast furnace trench slag cleaning device, comprising: The slag guide steel pipe is vertically installed on the furnace platform; Two separators are hinged to the slag guide steel pipe and are spaced apart in the vertical direction. Each separator has a buffer part located inside the slag guide steel pipe and a transmission part located outside the slag guide steel pipe. The buffer part can vertically separate the inner cavity of the slag guide steel pipe when it is flipped to close the slag guide steel pipe. The two transmission parts extend in opposite directions. A connecting arm is hinged between the two transmission parts; The first driving component, connected to any of the transmission parts, is used to drive the two buffer parts to alternately pitch and rotate, so that the waste slag falls in segments and intermittently along the slag guide steel pipe.

[0007] In one possible implementation, the separator includes: The rotating shaft is rotatably mounted on the slag guiding steel pipe; The mounting arm is sleeved on the rotating shaft; A sealing plate is fixedly mounted on the mounting arm and located inside the slag guiding steel pipe; the sealing plate constitutes the buffer section. The drive arm is fixedly mounted on the rotating shaft and located outside the slag guiding steel pipe; the drive arm constitutes the transmission part; the end of the drive arm opposite to the rotating shaft is hinged to the connecting arm.

[0008] In one possible implementation, the mounting arm is rotatably sleeved on the rotating shaft, and the separator further includes: The force transmission beam is fixedly mounted on the mounting arm; Two supporting lugs are fixedly mounted on the rotating shaft and are located on both sides of the rotation path of the force transmission beam, respectively. Two buffer pads are fixedly mounted on the two support lugs respectively, and the buffer pads abut against the force transmission beam; When the waste impacts the sealing plate, the force transmission beam deflects with the sealing plate and squeezes the buffer pad, so that the buffer pad absorbs the impact force.

[0009] In one possible implementation, the first driving component is a first hydraulic cylinder, the piston rod end of the first hydraulic cylinder is hinged to any of the transmission parts, and the cylinder body end of the first hydraulic cylinder is hinged to the slag guide steel pipe.

[0010] In one possible implementation, the blast furnace trench cleaning device further includes: Two movable cover plates are respectively flipped and installed on opposite sides of the slag guiding steel pipe; each of the movable cover plates has a sealing position and a material guiding position; Two drive components are respectively connected to the two movable cover plates in a one-to-one transmission connection, and are used to drive the two movable cover plates to flip. When the movable cover plate is flipped to the closed position, the movable cover plate is flush with the upper surface of the furnace platform to close the feed port of the slag guide steel pipe. When the movable cover plate flips to the material guiding station, the movable cover plate tilts towards the inside of the slag guiding steel pipe to form a guiding slope that guides the waste slag into the slag guiding steel pipe.

[0011] In one possible implementation, the driving component includes: Two sliding members are respectively hinged to the opposite sides of the corresponding movable cover plate, and both are laterally slidable on the furnace platform; The support member is hinged at one end to the furnace platform and at the other end to the corresponding movable cover plate; The second driving component is disposed on the slag guiding steel pipe and is used to drive the corresponding support component to rotate.

[0012] In one possible implementation, the second driving component is a second hydraulic cylinder, with the cylinder body end of the second hydraulic cylinder hinged to the slag guide steel pipe and the piston rod end of the second hydraulic cylinder hinged to the corresponding support component.

[0013] In one possible implementation, slide rails are fixedly installed on opposite sides of the slag guide steel pipe on the furnace platform, and pulleys that cooperate with the slide rails are rotatably installed on the sliding member.

[0014] In one possible implementation, the inner wall of the slag guiding steel pipe is fixedly provided with a plurality of flow-retarding sections distributed at intervals along the vertical direction, and the channel cross-section of the flow-retarding sections gradually narrows along the falling direction of the waste slag.

[0015] In one possible implementation, the blast furnace trench cleaning device further includes: The spray head is fixedly installed at the bottom end of the slag guiding steel pipe; A sensor is fixedly installed at the bottom end of the slag guiding steel pipe to detect the falling of waste slag; The controller, electrically connected to the spray head and the sensor, is configured to control the opening and closing of the spray head in response to a detection signal from the sensor.

[0016] The present invention provides a blast furnace slag cleaning device, which, compared with the prior art, has the following advantages: When the slag is dumped from above the furnace platform into the feed inlet at the upper end of the slag guide steel pipe by an excavator, the first driving component forces the buffer sections of the two separators to alternately open and close inside the slag guide steel pipe. The slag first falls onto the buffer section of the upper separator, which is in a closed state, and its descent is interrupted. Then, the first driving component drives the upper separator to open, and the slag falls onto the buffer section of the lower separator, which is in a closed state. Next, the lower separator opens, and the slag finally falls into the lower car. This cycle is repeated, realizing the segmented and intermittent descent of the slag along the vertical slag guide steel pipe.

[0017] By dividing a long free fall into multiple short falls and implementing a brief stop and restart at each segment, the kinetic energy of the accumulated waste is greatly reduced. This significantly decreases the final velocity and impact force of the waste when it falls into the carriage, thereby directly preventing deformation or cracking of the carriage floor and side walls due to severe impact. It also curbs the risk of waste splashing and ensures a safe and clean working environment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the blast furnace trench cleaning device provided in an embodiment of the present invention.

[0020] Figure 2 This is another overall structural schematic diagram of the blast furnace trench cleaning device provided in an embodiment of the present invention.

[0021] Figure 3 This is a cross-sectional view of the blast furnace trench cleaning device provided in an embodiment of the present invention.

[0022] Figure 4 This is another cross-sectional view of the blast furnace trench cleaning device provided in an embodiment of the present invention.

[0023] Figure 5 for Figure 3 A magnified structural diagram of part A in the middle.

[0024] Figure 6 This is another cross-sectional view of the blast furnace trench cleaning device provided in an embodiment of the present invention.

[0025] Figure 7 for Figure 6 A magnified structural diagram of part B.

[0026] In the diagram: 1. Slag guide steel pipe; 11. Slow flow section; 2. Furnace platform; 21. Slide rail; 3. Divider; 31. Rotating shaft; 32. Mounting arm; 33. Sealing plate; 34. Drive arm; 35. Force transmission beam; 36. Support lug; 37. Buffer pad; 4. Connecting arm; 5. First drive component; 61. Movable cover plate; 611. First baffle; 612. Second baffle; 62. Sliding component; 621. Pulley; 63. Support component; 64. Second drive component; 71. Spray head; 72. Sensor. Detailed Implementation

[0027] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] Please see Figure 1 , Figure 2 and Figure 3The present invention will now describe a blast furnace ditch slag cleaning device. The blast furnace ditch slag cleaning device includes a slag guiding steel pipe 1, two separators 3, a connecting arm 4, and a first driving component 5.

[0029] The slag guide pipe 1 is vertically mounted on the furnace platform 2. Two partitions 3 are hinged to the slag guide pipe 1 and are spaced apart vertically. Each partition 3 has a buffer section inside the slag guide pipe 1 and a transmission section outside the slag guide pipe 1. The buffer section vertically divides the inner cavity of the slag guide pipe 1 when it is flipped to close. The two transmission sections extend in opposite directions. A connecting arm 4 is hinged between the two transmission sections. A first driving member 5 is connected to either transmission section and drives the two buffer sections to alternately tilt and flip, causing the waste slag to fall intermittently along the slag guide pipe 1 in segments.

[0030] During the slag cleaning operation, workers first park the transport vehicle below the slag guide pipe 1, aligning the lower discharge port of the slag guide pipe 1 with the top of the truck bed. Then, workers operate the excavator to dump the slag generated from blast furnace trench repair into the upper feed port of the slag guide pipe 1. At this time, the first drive component 5 is activated, driving the transmission unit connected to it to rotate around the hinge point. Since the two transmission units extend in opposite directions and are connected by the connecting arm 4, the rotation of one transmission unit will drive the other transmission unit to rotate through the connecting arm 4, thereby driving the two buffer parts to alternately open and close the slag guide pipe 1.

[0031] Specifically, when the upper buffer section is open and the lower buffer section is closed, the waste slag falls from the upper end of the guide pipe 1 into the internal space between the two buffer sections, achieving temporary storage of the first section of waste slag. Subsequently, the upper buffer section closes and the lower buffer section opens, and the temporarily stored waste slag falls into the transport vehicle's compartment, completing the transportation of one section of waste slag. This cycle repeats, achieving segmented and intermittent descent of waste slag along the guide pipe 1.

[0032] By alternating the opening and closing of two buffer sections, the continuous free fall of waste residue is transformed into a segmented, intermittent fall, significantly reducing the impact force when the waste residue falls onto the truck bed. This prevents the truck bed floor and side walls from deforming or cracking due to impact. Simultaneously, the intermittent fall effectively suppresses waste residue splashing, preventing it from scattering outside the truck bed, avoiding pollution and safety hazards to the surrounding working environment, and ensuring the personal safety of the workers.

[0033] In some possible embodiments, please refer to Figure 3 and Figure 4The separator 3 includes a rotating shaft 31, a mounting arm 32, a sealing plate 33, and a driving arm 34. The rotating shaft 31 is rotatably mounted on the slag-guiding steel pipe 1. The mounting arm 32 is sleeved on the rotating shaft 31. The sealing plate 33 is fixedly mounted on the mounting arm 32 and located inside the slag-guiding steel pipe 1. The sealing plate 33 constitutes a buffer section. The driving arm 34 is fixedly mounted on the rotating shaft 31 and located outside the slag-guiding steel pipe 1. The driving arm 34 constitutes a transmission section. The end of the driving arm 34 opposite to the rotating shaft 31 is hinged to the connecting arm 4.

[0034] During operation, the first driving component 5 drives either driving arm 34 to rotate around the rotating shaft 31. The driving arm 34 drives the rotating shaft 31 to rotate synchronously, and the rotating shaft 31 in turn drives the mounting arm 32 and the sealing plate 33 sleeved on it to rotate together, realizing the opening and closing of the slag guiding steel pipe 1 by the sealing plate 33. Since the two driving arms 34 extend in opposite directions and are hinged by the connecting arm 4, when one driving arm 34 rotates, it will pull or push the other driving arm 34 to rotate around its corresponding rotating shaft 31 through the connecting arm 4, thereby driving the other sealing plate 33 to rotate. This ensures that the two sealing plates 33 can alternately open and close the slag guiding steel pipe 1, avoiding the problem of waste slag falling continuously and buffer failure caused by the two sealing plates 33 opening at the same time, or the problem of waste slag blocking the slag guiding steel pipe 1 when they close at the same time.

[0035] In some possible embodiments, please refer to Figure 3 , Figure 4 and Figure 5 The mounting arm 32 is rotatably mounted on the rotating shaft 31. The separator 3 also includes a force transmission beam 35, two support lugs 36, and two buffer pads 37. The force transmission beam 35 is fixedly mounted on the mounting arm 32. The two support lugs 36 are both fixedly mounted on the rotating shaft 31 and are located on opposite sides of the rotation path of the force transmission beam 35. The two buffer pads 37 are fixedly mounted on the two support lugs 36, and abut against the force transmission beam 35. When waste impacts the sealing plate 33, the force transmission beam 35 deflects with the sealing plate 33 and squeezes the buffer pads 37, allowing the buffer pads 37 to absorb the impact force.

[0036] For example, the cushioning pad 37 is made of rubber.

[0037] The supporting lug 36 limits and supports the force transmission beam 35, preventing excessive relative rotation between the mounting arm 32 and the rotating shaft 31, and ensuring that the rotating shaft 31 can drive the mounting arm 32 to rotate when it rotates, thereby controlling the opening and closing of the slag guide steel pipe 1 by the sealing plate 33.

[0038] When the waste slag falls from the top of the guide pipe 1 and impacts the sealed plate 33, which is in a closed state, the sealed plate 33 is subjected to the downward impact force of the waste slag, which causes the mounting arm 32 to rotate slightly around the rotating shaft 31. The mounting arm 32 then causes the force transmission beam 35 fixed on it to deflect synchronously. When the force transmission beam 35 deflects, it will squeeze the buffer pad 37 on one side, causing the buffer pad 37 to undergo elastic deformation, absorbing the impact force generated by the waste slag, and thus buffering the sealed plate 33.

[0039] The buffer pad 37 effectively mitigates the impact of waste residue on the sealing plate 33, preventing the impact from being directly transmitted to the first drive component 5. This avoids damage to the first drive component 5 due to prolonged exposure to high-intensity impacts, extends the service life of the first drive component 5, and reduces the maintenance frequency and cost of the device. The buffer pad 37 absorbs impact force, further slowing the falling speed of the waste residue, making its temporary storage and descent between the two sealing plates 33 more stable. This further weakens the impact force when the waste residue reaches the vehicle compartment, better protecting the transport vehicle and preventing deformation and cracking of the compartment and splashing of waste residue.

[0040] In some possible embodiments, please refer to Figure 2 and Figure 3 The first driving component 5 is a first hydraulic cylinder. The piston rod end of the first hydraulic cylinder is hinged to any transmission part, and the cylinder body end of the first hydraulic cylinder is hinged to the slag guide steel pipe 1. Specifically, the piston rod end of the first hydraulic cylinder is hinged to any driving arm 34.

[0041] By controlling the piston rod of the first hydraulic cylinder to extend or retract, the drive arm 34 hinged to it is pushed or pulled to drive the rotating shaft 31 to rotate. The drive arm 34 drives another drive arm 34 to rotate through the connecting arm 4, thereby driving the two sealing plates 33 to alternately open and close the slag guide steel pipe 1, so as to realize the segmented intermittent falling of the waste slag.

[0042] During operation, the piston rod extension and retraction speed and stroke of the first hydraulic cylinder can be flexibly adjusted according to the actual situation such as the amount of waste falling and the size of the waste particles, thereby controlling the opening and closing frequency of the two sealing plates 33, ensuring the buffering effect while ensuring the efficiency of waste cleaning.

[0043] In some possible embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The blast furnace slag cleaning device also includes two movable cover plates 61 and two drive assemblies. The two movable cover plates 61 are respectively rotated and installed on opposite sides of the slag guiding steel pipe 1. Each movable cover plate 61 has a closing position and a material guiding position. The two drive assemblies are respectively connected to the two movable cover plates 61 in a one-to-one transmission manner, and are used to drive the two movable cover plates 61 to rotate.

[0044] When the movable cover plate 61 is flipped to the closed position, the movable cover plate 61 is flush with the upper surface of the furnace platform 2 to close the feed port of the slag guide steel pipe 1. When the movable cover plate 61 is flipped to the material guide position, the movable cover plate 61 is tilted towards the inside of the slag guide steel pipe 1 to form a material guide slope that guides the waste slag into the slag guide steel pipe 1.

[0045] Specifically, a material inlet for waste slag to fall is provided on the furnace platform 2 at the position corresponding to the slag guide steel pipe 1.

[0046] When both movable cover plates 61 are flipped to the closed position, the two movable cover plates 61 are joined together and flush with the upper surface of the furnace platform 2, thereby completely sealing the material inlet, effectively preventing debris on the furnace platform 2 from falling into the slag guide steel pipe 1, while ensuring the flatness of the furnace platform 2 surface and not affecting the normal operation of other operations on the furnace platform 2.

[0047] When both movable cover plates 61 are flipped to the material guiding position, the two movable cover plates 61 open the material outlet, thereby forming a channel for waste residue to fall between the two movable cover plates 61. The channel is connected to the slag guiding steel pipe 1, which can directly guide the waste residue falling on the movable cover plates 61 into the slag guiding steel pipe 1.

[0048] Furthermore, when the movable cover plate 61 is flipped to the material guiding position, there is a risk that waste residue may fall from the side of the material opening away from the movable cover plate 61, as the material opening is open. First baffles 611 are fixedly installed on opposite sides of the movable cover plate 61, and a second baffle 612 is fixedly installed between the two first baffles 611. The second baffle 612 and the first baffles 611 can block the material opening, ensuring that when the movable cover plate 61 is flipped to the material guiding position, the waste residue can only fall into the slag guiding steel pipe 1 through the channel between the two movable cover plates 61.

[0049] When waste slag cleaning is required, the drive assembly drives the movable cover plate 61 to flip to the material guiding position. The movable cover plate 61 tilts inward towards the inside of the slag guiding steel pipe 1, forming an inclined material guiding slope. When the operator operates the excavator to dump the waste slag into the feed inlet of the slag guiding steel pipe 1, the inclined material guiding slope of the movable cover plate 61 can effectively guide the waste slag, preventing it from scattering onto the furnace platform 2 outside the slag guiding steel pipe 1 during dumping, reducing the extra cleaning workload of the operators and lowering labor intensity. At the same time, the impact force of the waste slag falling on the inclined material guiding slope can effectively reduce the impact force of the waste slag, absorb the kinetic energy of the waste slag, and reduce the speed of the waste slag when falling.

[0050] In some possible embodiments, please refer to Figure 3 , Figure 4 and Figure 6The driving assembly includes two sliding members 62, a support member 63, and a second driving member 64. The two sliding members 62 are respectively hinged to opposite sides of the corresponding movable cover plate 61 and are both laterally slidable on the furnace platform 2. One end of the support member 63 is hinged to the furnace platform 2, and the other end is hinged to the corresponding movable cover plate 61. The second driving member 64 is mounted on the slag guide steel pipe 1 and is used to drive the corresponding support member 63 to rotate.

[0051] When the movable cover plate 61 needs to be flipped from the closed position to the guiding position, the second drive component 64 is activated, driving the support component 63 to flip upward around its hinge point with the furnace platform 2. The support component 63 pushes the movable cover plate 61 to flip upward simultaneously. At this time, the movable cover plate 61 drives the sliding components 62 on both sides to slide laterally on the furnace platform 2. The sliding components 62 provide support and guidance for the movable cover plate 61, ensuring that the movable cover plate 61 flips smoothly. When the movable cover plate 61 flips to the preset guiding position, the second drive component 64 stops. The sliding components 62 and the support component 63 together provide support for the movable cover plate 61, ensuring that the movable cover plate 61 remains stably in the guiding position and will not shift due to the impact of waste residue.

[0052] When it is necessary to flip the movable cover plate 61 from the material guiding station back to the closed station, the second drive component 64 moves in the opposite direction, pulling the support component 63 to flip downward around its hinge point with the furnace platform 2. The support component 63 drives the movable cover plate 61 to flip downward synchronously, and the sliding component 62 slides laterally with the movable cover plate 61 until the movable cover plate 61 is flush with the upper surface of the furnace platform 2. The second drive component 64 stops moving, and the station switching is completed.

[0053] In some possible embodiments, the second driving member 64 is a second hydraulic cylinder, the cylinder body end of the second hydraulic cylinder is hinged to the slag guide steel pipe 1, and the piston rod end of the second hydraulic cylinder is hinged to the corresponding support member 63.

[0054] When it is necessary to drive the movable cover plate 61 to flip, the piston rod of the second hydraulic cylinder is extended or retracted to push or pull the support member 63 to flip around its hinge point with the furnace platform 2. The support member 63 then drives the movable cover plate 61 to flip synchronously. At the same time, the movable cover plate 61 drives the sliding members 62 on both sides to slide laterally on the furnace platform 2, so as to realize the smooth switching of the movable cover plate 61 between the closed station and the material guiding station.

[0055] The second hydraulic cylinder has a locking function. When the movable cover plate 61 is flipped to the required position, the second hydraulic cylinder can lock the position of the piston rod and stably lock the movable cover plate 61 at the position to prevent the movable cover plate 61 from shifting due to the impact or vibration of waste residue during operation, thus ensuring the material guiding or sealing effect.

[0056] In some possible embodiments, please refer to Figure 6On the furnace platform 2, slide rails 21 are fixedly installed on opposite sides of the slag guide steel pipe 1, and pulleys 621 that cooperate with slide rails 21 are rotatably installed on the sliding component 62.

[0057] Parallel slide rails 21 are fixedly installed on the furnace platform 2 at positions opposite to the slag guide steel pipe 1. A pulley 621 is rotatably installed on the sliding member 62. The pulley 621 and the slide rail 21 cooperate with each other, so that the sliding member 62 can slide laterally along the slide rail 21, converting the sliding friction between the sliding member 62 and the furnace platform 2 into the rolling friction between the pulley 621 and the slide rail 21, greatly reducing the frictional resistance.

[0058] In some possible embodiments, please refer to Figure 3 and Figure 4 The inner wall of the slag guiding steel pipe 1 is fixedly provided with multiple flow-retarding sections 11 distributed at intervals along the vertical direction. The cross-section of the flow-retarding section 11 gradually narrows along the falling direction of the waste slag.

[0059] Multiple slow-flow sections 11 are fixed on the inner wall of the slag guiding steel pipe 1 and are evenly distributed along the vertical direction. The cross-section of the channel of each slow-flow section 11 gradually decreases along the direction of slag falling, forming a multi-stage slow-flow structure. This structure works in conjunction with the segmented intermittent buffering of the two separators 3 to construct a dual buffering system.

[0060] During the descent of the waste residue, it passes through each of the slow-flow sections 11 in sequence. Due to the gradually narrowing cross-section of the slow-flow section 11, the waste residue is blocked and guided by the inner wall of the slow-flow section 11, further slowing down its descent speed. At the same time, the slow-flow section 11 can also guide the waste residue to fall along the center of the guide pipe 1, avoiding the waste residue from hitting the inner wall of the guide pipe 1, reducing waste residue splashing and device wear.

[0061] In some possible embodiments, please refer to Figure 1 and Figure 2 The blast furnace slag cleaning device also includes a spray head 71, a sensor 72, and a controller (not shown in the figure). The spray head 71 is fixedly installed at the bottom end of the slag guiding steel pipe 1. The sensor 72 is fixedly installed at the bottom end of the slag guiding steel pipe 1 and is used to detect the falling slag. The controller is electrically connected to the spray head 71 and the sensor 72 and is configured to control the opening and closing of the spray head 71 in response to the detection signal from the sensor 72.

[0062] Spray head 71 is fixedly installed at the bottom end of slag guiding steel pipe 1 to spray water for dust suppression and cooling. Sensor 72 is fixedly installed at the bottom end of slag guiding steel pipe 1 to detect in real time whether waste slag is falling from the bottom end of slag guiding steel pipe 1. The controller is electrically connected to both spray head 71 and sensor 72, and is responsible for receiving the detection signal from sensor 72 and controlling the opening and closing of spray head 71 according to the detection signal to achieve automated dust suppression and cooling.

[0063] When sensor 72 detects waste slag falling from the bottom of the slag guide pipe 1 into the transport vehicle's compartment, it immediately sends a detection signal to the controller. Upon receiving the signal, the controller responds by activating spray head 71, which sprays water mist to spray the falling waste slag and the waste slag inside the compartment. The water flow moistens the surface of the waste slag, reducing its dust-generating properties and preventing the generation of large amounts of dust during the falling and accumulation of waste slag, thus avoiding pollution of the surrounding working environment. Simultaneously, the water flow cools the inner walls of the transport vehicle's compartment. Since the blast furnace repair waste slag has a high temperature, prolonged direct contact with the compartment can cause overheating of the inner walls, accelerating compartment damage. Spraying effectively reduces the compartment temperature, minimizing thermal damage and further protecting the transport vehicle. When sensor 72 detects no more waste slag falling, it sends a stop signal to the controller, which then shuts off the spray head 71, preventing water waste and achieving energy conservation and environmental protection.

[0064] In summary, the blast furnace slag cleaning device provided by this invention, compared with the prior art, allows for the following operation: after the slag is dumped from above the furnace platform 2 into the feed inlet at the upper end of the slag guide steel pipe 1 by an excavator, the first driving component 5 starts working, driving the transmission part of one of the connected partition components 3. Since the transmission parts of the two partition components 3 extend in opposite directions and are hinged together by the connecting arm 4, the driving of the first driving component 5 forces the buffer parts of the two partition components 3 to alternately open and close inside the slag guide steel pipe 1. The slag first falls onto the buffer part of the upper partition component 3, which is in a closed state, and its descent is interrupted. Subsequently, the first driving component 5 drives the upper partition component 3 to open, and the slag falls onto the buffer part of the lower partition component 3, which is in a closed state. Then, the lower partition component 3 opens, and the slag finally falls into the lower car. This cycle repeats, achieving segmented and intermittent descent of the slag along the vertical slag guide steel pipe 1.

[0065] By dividing a long freefall motion into multiple short-distance falls and implementing a brief stop and restart at each separator 3, the kinetic energy of the accumulated waste is greatly reduced. This significantly lowers the final velocity and impact force of the waste as it falls into the carriage, directly preventing deformation or cracking of the carriage floor and side walls due to severe impact. It also mitigates the risk of waste splashing, ensuring a safe and clean working environment. The coordinated movement of the two separators 3 can be synchronously controlled by a single first drive component 5 in conjunction with the connecting arm 4, simplifying the drive and control structure and improving the operational reliability and maintenance convenience of the device.

[0066] 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 trench cleaning device, characterized in that, include, The slag guide steel pipe (1) is vertically installed on the furnace platform (2); Two partitions (3) are hinged to the slag guide steel pipe (1) and are distributed at intervals in the vertical direction; each partition (3) has a buffer part located inside the slag guide steel pipe (1) and a transmission part located outside the slag guide steel pipe (1). The buffer part can vertically divide the inner cavity of the slag guide steel pipe (1) when it is flipped to close the slag guide steel pipe (1). The two transmission parts extend in opposite directions. The connecting arm (4) is hinged between the two transmission parts; The first driving component (5) is connected to any of the transmission parts and is used to drive the two buffer parts to alternately pitch and flip so that the waste slag falls in segments and intermittently along the guide steel pipe (1).

2. The blast furnace trench slag cleaning device as described in claim 1, characterized in that, The separator (3) includes: A rotating shaft (31) is rotatably mounted on the slag guiding steel pipe (1); The mounting arm (32) is sleeved on the rotating shaft (31); The sealing plate (33) is fixedly installed on the mounting arm (32) and located inside the slag guiding steel pipe (1); the sealing plate (33) constitutes the buffer part; The drive arm (34) is fixedly mounted on the rotating shaft (31) and located outside the slag guide steel pipe (1); the drive arm (34) constitutes the transmission part; the end of the drive arm (34) away from the rotating shaft (31) is hinged to the connecting arm (4).

3. The blast furnace trench waste slag cleaning device as described in claim 2, characterized in that, The mounting arm (32) is rotatably sleeved on the rotating shaft (31), and the separator (3) further includes: The force transmission beam (35) is fixedly mounted on the mounting arm (32); Two support lugs (36) are fixedly mounted on the rotating shaft (31) and are located on both sides of the rotation path of the force transmission beam (35); Two buffer pads (37) are fixedly mounted on the two support lugs (36) respectively, and the buffer pads (37) abut against the force transmission beam (35); When the waste impacts the sealing plate (33), the force transmission beam (35) deflects with the sealing plate (33) and squeezes the buffer pad (37) so that the buffer pad (37) absorbs the impact force.

4. The blast furnace trench slag cleaning device as described in claim 1, characterized in that, The first driving component (5) is a first hydraulic cylinder. The piston rod end of the first hydraulic cylinder is hinged to any of the transmission parts, and the cylinder body end of the first hydraulic cylinder is hinged to the slag guide steel pipe (1).

5. The blast furnace trench slag cleaning device as described in claim 1, characterized in that, The blast furnace trenching waste slag cleaning device also includes: Two movable cover plates (61) are respectively flipped and installed on opposite sides of the slag guiding steel pipe (1); each of the movable cover plates (61) has a sealing station and a material guiding station; Two drive components are respectively connected to the two movable cover plates (61) in a one-to-one transmission connection, and are used to drive the two movable cover plates (61) to flip. When the movable cover plate (61) is flipped to the closed position, the movable cover plate (61) is flush with the upper surface of the furnace platform (2) to close the feed port of the slag guide steel pipe (1). When the movable cover plate (61) is flipped to the material guiding station, the movable cover plate (61) is tilted toward the inside of the slag guiding steel pipe (1) to form a material guiding slope that guides the waste slag into the slag guiding steel pipe (1).

6. The blast furnace trench slag cleaning device as described in claim 5, characterized in that, The driving component includes: Two sliding members (62) are respectively hinged to the opposite sides of the corresponding movable cover plate (61), and both are laterally slidably disposed on the furnace platform (2); The support member (63) is hinged at one end to the furnace platform (2) and at the other end to the corresponding movable cover plate (61); The second driving component (64) is disposed on the slag guide steel pipe (1) and is used to drive the corresponding support component (63) to flip.

7. The blast furnace trench slag cleaning device as described in claim 6, characterized in that, The second driving component (64) is a second hydraulic cylinder. The cylinder body end of the second hydraulic cylinder is hinged to the slag guide steel pipe (1), and the piston rod end of the second hydraulic cylinder is hinged to the corresponding support component (63).

8. The blast furnace trench slag cleaning device as described in claim 6, characterized in that, The furnace platform (2) is fixedly provided with slide rails (21) on both sides of the slag guide steel pipe (1), and the sliding member (62) is rotatably provided with pulleys (621) that cooperate with the slide rails (21).

9. The blast furnace trench slag cleaning device as described in claim 1, characterized in that, The inner wall of the slag guiding steel pipe (1) is fixedly provided with a plurality of slow flow sections (11) distributed at intervals along the vertical direction, and the channel cross section of the slow flow section (11) gradually narrows along the falling direction of the waste slag.

10. The blast furnace trench waste slag cleaning device as described in claim 1, characterized in that, The blast furnace trenching waste slag cleaning device also includes: The spray head (71) is fixedly installed at the bottom end of the slag guiding steel pipe (1); Sensor (72) is fixedly installed at the bottom end of the slag guiding steel pipe (1) to detect the falling of waste residue; The controller, electrically connected to the spray head (71) and the sensor (72), is configured to control the opening and closing of the spray head (71) in response to a detection signal from the sensor (72).

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