Automatic cleaning device for bottom-blowing furnace charging port and using method thereof

Abstract

The present application relates to the technical field of metal smelting furnace cleaning, and particularly relates to a bottom-blown furnace charging port automatic cleaning device and a use method thereof, which comprises a cleaning assembly, the cleaning assembly comprises a mounting head, driving rods arranged in an array are arranged on the side wall of the top of the mounting head, a cross rod is fixedly connected to the end of each driving rod away from the mounting head, a connecting plate is arranged at each end of the cross rod, a movable slot is arranged at the top of each connecting plate, a through hole is arranged at the bottom of each connecting plate, a connecting rod is arranged between the two through holes, an adjusting assembly is arranged between the connecting rod and the through hole, a movable plate is fixedly connected to the connecting rod, a 'D' shaped connecting frame is rotatably connected to the outside of the bottom of each connecting plate through the through hole, and the 'D' shaped connecting frame is fixedly connected to the side wall of the bottom of the mounting head through a positioning rod; the cleaning assembly is arranged, and the technical problem that the existing technology cannot clean the slag knot appearing below the charging port and close to the hearth is solved.

Description

Technical Field

[0001] This invention relates to the field of metal smelting furnace cleaning technology, and in particular to an automatic cleaning device for the charging port of a bottom-blown furnace and its usage method. Background Technology

[0002] The oxygen-enriched bottom-blown smelting process is characterized by its strong adaptability to raw materials and is being adopted by an increasing number of copper smelting companies. Currently, the raw material transportation and feeding method for the bottom-blown process is as follows: multiple feeding hoppers are configured in the batching process, and each feeding hopper is equipped with a grab bucket to load the corresponding materials required for bottom-blown smelting. The materials are then transported to the feeding port of the bottom-blown furnace via a conveyor belt.

[0003] Application number CN202210477376.6 discloses a slag removal device that can be installed and disassembled at the feed inlet of a bottom-blown furnace. A cylinder operates to move the first scraper upwards and retract it. A motor rotates the first scraper 90 degrees to offset it from the feed inlet, achieving rapid retraction. A striking block taps the feed inlet, causing it to vibrate and loosen or shake off residue adhering to the inner wall of the inlet, making it easier for the first scraper to remove the residue.

[0004] Application No. CN202120029410.4 discloses a fully automatic slag cleaning and unblocking device for the bottom-blown furnace feed port. The device controls a linear mechanism to drive a chisel rod downwards, which in turn drives a material removal head to the feed port of the bottom-blown furnace. Then, the rotating part is controlled to rotate the chisel rod, which in turn drives the material removal head to rotate. The linear mechanism is then controlled to drive the chisel rod downwards to gradually clean the slag, and the cleaning is repeated until the slag is completely removed.

[0005] Although existing technologies can clean the slag adhering to the charging port of a bottom-blown furnace, during normal production, the intense reaction in the molten pool during smelting causes molten metal splashing, leading to the formation of "skirts" near the furnace chamber below the charging port. Once formed, these skirts are irregular and tend to lengthen, affecting material feeding. In severe cases, they can even block the charging port of the bottom-blown furnace, preventing feeding.

[0006] Therefore, it is necessary to invent an automatic cleaning device for the bottom blowing furnace feed port and its usage method to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to provide an automatic cleaning device for the feed port of a bottom-blown furnace and its usage method, so as to solve the technical problem in the background art of not being able to clean the skirting that appears in the part below the feed port near the furnace.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An automatic cleaning device for the charging port of a bottom-blown furnace includes a smelting furnace and a charging port. Symmetrically distributed guide rails are provided above the smelting furnace. A displacement component is mounted on the guide rails, and a drive component is located inside the displacement component. A cleaning component for cleaning the charging port is mounted on the drive component. The cleaning component includes a mounting head, and drive rods arranged in an array are provided on the side wall of the top of the mounting head. A crossbar is fixedly connected to the end of each drive rod away from the mounting head. Connecting plates are provided at both ends of the crossbar, and movable slots are formed on the top of both connecting plates. Stops with a diameter larger than the width of the movable slots are provided at both ends of the crossbar. Each connecting plate has a through hole at its bottom, and a connecting rod is positioned between two of the through holes. An adjusting assembly is located between the connecting rod and the through hole. A movable plate is fixedly connected to the connecting rod. A U-shaped connecting frame is rotatably connected to the outer sides of the bottom of the two connecting plates through the through holes. The end of the U-shaped connecting frame away from the connecting plate is fixedly connected to the side wall of the bottom of the mounting head via a positioning rod. The adjusting assembly includes a protrusion fixedly connected to the end of the connecting rod. A movable block is slidably connected to the connecting plate on the outer side of the protrusion. An "arch"-shaped groove adapted to the protrusion is formed on the movable block. An adjusting rod is fixedly connected to the connecting plate at the top of the movable block. A crossbar can move within the movable groove, the width of which is the same as the diameter of the crossbar. The number of driving rods and positioning rods is the same, and the connection points of the driving rods, positioning rods, and mounting head are aligned. By controlling the contraction or extension of the driving rods, positioning rods, and adjusting rods, the different states of the connecting plate and movable plate inside the feed inlet are adjusted, thereby enabling comprehensive cleaning of all parts of the feed inlet.

[0010] Preferably, both the connecting plate and the movable plate have serrated plates on their outer walls, and both have grooves inside. A slider fixedly connected to the serrated plate is slidably connected inside each groove. Elastic elements are provided at both ends of the slider, with the ends of the two elastic elements furthest from the slider fixedly connected to the groove. By using serrated plates, when the serrated plates come into contact with slag on the feed inlet, the slag compresses the inclined portion of the serrated plates, causing the serrated plates to compress the elastic elements located at the bottom of the sliding blocks, causing them to deform. This means the serrated plates move downwards through the sliding blocks, subjecting the slag to two forces in different directions: one is the impact force of the serrated plates on the slag when they revolve around the mounting head, and the other is the pulling force of the serrated plates on the slag when they move downwards through the sliding blocks. This allows the slag to fall more easily from the inner wall of the feed inlet. The elastic element 10 can be a spring or an elastic telescopic rod.

[0011] Preferably, the displacement assembly includes guide wheels respectively disposed on both sides of two guide rails. A support plate is rotatably connected above the guide wheel corresponding to a single guide rail. A support frame is fixedly connected to the top of the support plate, and a fixing plate is fixedly connected to the top of the support frame. The drive assembly is located on the lower surface of the fixing plate. The guide rails are I-shaped steel, and two guide wheels are respectively provided on both sides of a single guide rail. By driving the guide wheels to move linearly along the guide rails, the center of the mounting head is aligned with the center of the feed inlet of the smelting furnace.

[0012] Preferably, the drive assembly includes a hydraulic cylinder fixedly connected to the lower surface of the fixed plate. A sliding plate is fixedly connected to the telescopic end of the hydraulic cylinder. A rotary motor is fixedly connected to the lower surface of the sliding plate. A sliding plate is fixedly connected to the bottom of the rotary motor. The output end of the rotary motor extends through the sliding plate and is fixedly connected to the upper surface of the mounting head. By controlling the telescopic movement of the hydraulic cylinder and the operation of the rotary motor, the cleaning assembly can penetrate deep into the feed inlet to perform cleaning at different depths.

[0013] Preferably, the drive rod, the positioning rod, and the adjusting rod are all electric push rods. By controlling the contraction or extension of the electric push rods, the connecting plate and the movable plate can be adjusted to present different working states inside the feed inlet.

[0014] Preferably, both the drive rod and the positioning rod are provided with metal bellows on their exterior. The end of the metal bellows on the drive rod away from the mounting head is fixedly connected to the crossbar, and the end of the metal bellows on the positioning rod away from the mounting head is fixedly connected to the U-shaped connecting frame. By providing metal bellows on the drive rod and the positioning rod, the adhesion of splashed molten metal from inside the melting furnace to the surfaces of the drive rod and the positioning rod is prevented.

[0015] Preferably, each of the two support frames is fixedly connected to a slide rail on one side, and both sides of the slide plate and sliding plate are slidably connected to the slide rail. By setting the slide rail, the phenomenon of misalignment between the output shaft of the rotary motor and the feed inlet is avoided when the hydraulic cylinder pushes the rotary motor through the slide plate to run towards the feed inlet.

[0016] Preferably, the length of the connecting plate is less than the length of the movable plate, and the gap between two adjacent connecting plates is equal to the width of a single movable plate. By limiting the length of the connecting plate and the gap between two adjacent connecting plates, if there is slag adhering to the movable plate, controlling the extension and retraction of the adjusting rod causes the connecting plate to collide with the movable plate, thereby completing the self-cleaning of the movable rod.

[0017] Preferably, the smelting furnace is provided with a control terminal on the outside, and the control terminal is provided with a control system inside, which is used to control the electrical components on the device.

[0018] A method of using an automatic cleaning device for the feed inlet of a bottom-blown furnace, the method being used with any of the above-mentioned automatic cleaning devices, the method comprising the following steps:

[0019] S1: The control terminal controls the guide wheel to drive the support frame to move linearly along the guide rail, so that the hydraulic cylinder on the connecting plate and the feed port on the melting furnace are on the same straight line.

[0020] S2: The control terminal controls the extension end of the hydraulic cylinder to extend and controls the rotation motor to operate. The hydraulic cylinder pushes the rotation motor downward through the slide plate, thereby causing the output shaft of the rotation motor to drive the mounting head into the inside of the feed port.

[0021] S3: The control system controls the contraction or extension of the drive rod, positioning rod, and adjusting rod, thereby adjusting the different states of the connecting plate and the movable plate inside the feed inlet. The rotation of the mounting head allows the connecting plate and the movable plate to clean the slag on the inner wall of the feed inlet.

[0022] S4: After the connecting plate and the movable plate have cleaned the slag on the inner wall of the feed inlet, the control system controls the drive rod, positioning rod and adjusting rod to retract or extend, so that the connecting plate and the movable plate are in a straight line parallel to the axis of the mounting head. Then the control system controls the extension end of the hydraulic cylinder to retract, so that the mounting head moves to directly above the feed inlet.

[0023] The technical effects and advantages of this invention are as follows:

[0024] 1. This invention, by setting a serrated plate and a connecting plate, allows for the direct scraping off of less adhered slag when the serrated plate comes into contact with the slag on the feed inlet. Slag with moderate adhesion is subjected to two forces in different directions upon contact with the serrated plate: one is the impact force exerted on the slag by the serrated plate as it revolves around the mounting head, and the other is the pulling force exerted on the slag by the serrated plate as it moves downward through the slider. This allows the slag to fall off the inner wall of the feed inlet more effectively.

[0025] 2. This invention uses an adjusting rod and a connecting rod to control the extension of the adjusting rod, causing the "bow"-shaped groove on the movable block to press against the protrusion on the connecting column. By setting the shape of the "bow"-shaped groove, when the movable block moves down, the inclined part of the "bow"-shaped groove presses against the protrusion on the connecting rod and deflects it away from the mounting head, so that the outer side of the movable plate contacts the part below the feed inlet near the furnace. As the rotary motor continues to rotate, the outer side of the movable plate cleans the skirt generated on the part below the feed inlet near the furnace.

[0026] 3. This invention, by setting up a drive rod and a positioning rod, and controlling the extension and retraction of the drive rod and positioning rod by the control system, causes the connecting plates and movable plates arranged in a row on the mounting head to form an inverted conical structure. The connecting plates and movable plates drill holes in the slag blocking the cylindrical part of the feed inlet, allowing the material to flow into the smelting furnace from the drilled holes. The positioning rod and drive rod are controlled to extend, causing the connecting plates and movable plates to move towards the inner wall of the feed inlet, causing the top of the connecting plate to be misaligned with the edge of the drilled hole. Then, the hydraulic cylinder is controlled to reciprocate and retract in coordination with the control adjustment component, causing the connecting plates and movable plates to reciprocate and alternately impact the skirted part at the bottom of the feed inlet, thereby causing the skirted part to vibrate and accelerate the detachment of the skirted part from the bottom of the feed inlet. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0028] Figure 2 This is a schematic diagram of the displacement component of the present invention.

[0029] Figure 3 This is a schematic diagram of the cleaning component of the present invention.

[0030] Figure 4 This is a schematic diagram of the structure of the movable plate of the present invention.

[0031] Figure 5 This is a schematic diagram of the connecting plate of the present invention.

[0032] Figure 6 This is a schematic diagram of the initial state of the connecting plate and the movable plate of the present invention.

[0033] Figure 7 This is a schematic diagram of the initial state of the drive rod and positioning rod of the present invention.

[0034] Figure 8 This is a schematic diagram showing the working state of the connecting plate and the movable plate of the present invention.

[0035] Figure 9 This is a schematic diagram of another working state of the connecting plate and the movable plate of the present invention.

[0036] In the diagram: 1. Smelting furnace; 2. Feed inlet; 3. Guide rail; 4. Displacement assembly; 401. Guide wheel; 402. Support plate; 403. Support frame; 404. Fixing plate; 5. Drive assembly; 501. Hydraulic cylinder; 502. Slide plate; 503. Rotary motor; 504. Sliding plate; 6. Cleaning assembly; 601. Mounting head; 602. Drive rod; 603. Crossbar; 604. Connecting plate; 605. Movable groove; 606. Stop block; 607. Through hole; 608. Connecting rod; 609. Movable plate; 610. "U"-shaped connecting frame; 611. Positioning rod; 7. Adjustment assembly; 701. Protrusion; 702. Movable block; 703. "Bow"-shaped groove; 704. Adjustment rod; 8. Serrated plate; 9. Slider; 10. Elastic element; 11. Metal bellows; 12. Slide rail. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Reference Figures 1 to 9An automatic cleaning device for the charging port of a bottom-blown furnace includes a smelting furnace 1 and a charging port 2. Symmetrically distributed guide rails 3 are provided above the smelting furnace 1. A displacement component 4 is provided on the guide rails 3, and a drive component 5 is provided inside the displacement component 4. A cleaning component 6 for cleaning the charging port 2 is provided on the drive component 5. The cleaning component 6 includes a mounting head 601. Drive rods 602 arranged in an array are provided on the side wall of the top of the mounting head 601. A crossbar 603 is fixedly connected to the end of each drive rod 602 away from the mounting head 601. Connecting plates 604 are provided at both ends of the crossbar 603. Movable grooves 605 are opened on the top of both connecting plates 604. Stops 606 with a diameter larger than the width of the movable grooves 605 are provided at both ends of the crossbar 603. Through holes 6 are opened at the bottom of both connecting plates 604. 07. A connecting rod 608 is provided between two through holes 607. An adjusting component 7 is provided between the connecting rod 608 and the through holes 607. A movable plate 609 is fixedly connected to the connecting rod 608. A "U"-shaped connecting bracket 610 is rotatably connected to the outer side of the bottom of the two connecting plates 604 through the through holes 607. The end of the "U"-shaped connecting bracket 610 away from the connecting plate 604 is fixedly connected to the side wall of the bottom of the mounting head 601 through a positioning rod 611. The adjusting component 7 includes a protrusion 701 fixedly connected to the end of the connecting rod 608. A movable block 702 is provided on the outer side of the protrusion 701 and is slidably connected to the connecting plate 604. An "arch"-shaped groove 703 adapted to the protrusion 701 is provided on the movable block 702. An adjusting rod 704 fixedly connected to the connecting plate 604 is provided on the top of the movable block 702. The crossbar 603 can move within the movable groove 605, the width of which is the same as the diameter of the crossbar 603; the number of drive rods 602 and positioning rods 611 is the same, and the connection points of drive rods 602 and positioning rods 611 with the mounting head 601 are on the same straight line; by controlling the contraction or extension of drive rods 602, positioning rods 611 and adjusting rods 704, the different states of connecting plate 604 and movable plate 609 inside the feed inlet 2 can be adjusted, thereby cleaning all parts of the feed inlet 2 in an all-round way.

[0039] Specifically, both the outer walls of the connecting plate 604 and the movable plate 609 are provided with serrated plates 8, and the interiors of both the connecting plate 604 and the movable plate 609 are provided with sliding grooves. Sliding blocks 9, which are fixedly connected to the serrated plates 8, are slidably connected inside the sliding grooves. Elastic elements 10 are provided at both the upper and lower ends of the sliding blocks 9, and the ends of the two elastic elements 10 away from the sliding blocks 9 are fixedly connected to the sliding grooves. By providing the serrated plates 8, when the serrated plates 8 come into contact with the slag on the feed inlet 2, the slag compresses the inclined portion of the serrated plates 8, causing the serrated plates 8 to compress the elastic elements 10 located at the bottom of the sliding blocks through the sliding blocks, causing them to deform. That is, the serrated plates 8 move downwards through the sliding blocks, thus subjecting the slag to two forces in different directions: one is the impact force of the serrated plates 8 on the slag when revolving around the mounting head 601, and the other is the pulling force of the serrated plates 8 on the slag when moving downwards through the sliding blocks. This allows the slag to fall more easily from the inner wall of the feed inlet 2. The elastic elements 10 can be springs or elastic telescopic rods.

[0040] Specifically, the displacement component 4 includes guide wheels 401 respectively disposed on both sides of the two guide rails 3. A support plate 402 is rotatably connected above the guide wheel 401 corresponding to a single guide rail 3. A support frame 403 is fixedly connected to the top of the support plate 402, and a fixing plate 404 is fixedly connected to the top of the support frame 403. The drive component 5 is located on the lower surface of the fixing plate 404. The guide rails 3 are I-shaped steel, and two guide wheels 401 are respectively provided on both sides of a single guide rail 3. By driving the guide wheels 401 to move linearly along the guide rails 3, the center of the mounting head 601 is aligned with the center of the feed inlet 2 on the smelting furnace 1.

[0041] Specifically, the drive assembly 5 includes a hydraulic cylinder 501 fixedly connected to the lower surface of the fixed plate 404. A sliding plate 502 is fixedly connected to the telescopic end of the hydraulic cylinder 501. A rotary motor 503 is fixedly connected to the lower surface of the sliding plate 502. A sliding plate 504 is fixedly connected to the bottom of the rotary motor 503. The output end of the rotary motor 503 extends through the sliding plate 504 and is fixedly connected to the upper surface of the mounting head 601. By controlling the telescopic movement of the hydraulic cylinder 501 and the operation of the rotary motor 503, the cleaning assembly 6 can penetrate deep into the feed inlet 2 to perform cleaning at different depths.

[0042] Specifically, the drive rod 602, the positioning rod 611, and the adjusting rod 704 are all electric push rods. By controlling the retraction or extension of the electric push rods, the connecting plate 604 and the movable plate 609 can be adjusted to present different working states inside the feed inlet 2.

[0043] Specifically, both the drive rod 602 and the positioning rod 611 are provided with metal bellows 11 on their exterior. The end of the metal bellows 11 on the drive rod 602 away from the mounting head 601 is fixedly connected to the crossbar 603, and the end of the metal bellows 11 on the positioning rod 611 away from the mounting head 601 is fixedly connected to the U-shaped connecting bracket 610. By providing metal bellows 11 on the drive rod 602 and the positioning rod 611, the situation where splashed molten metal inside the melting furnace 1 adheres to the surface of the drive rod 602 and the positioning rod 611 is avoided.

[0044] Specifically, slide rails 12 are fixedly connected to opposite sides of the two support frames 403, and slide plates 502 and 504 are slidably connected to slide rails 12 on both sides. By setting slide rails 12, the phenomenon of misalignment between the output shaft of the rotary motor 503 and the feed inlet 2 is avoided when the hydraulic cylinder 501 drives the rotary motor 503 through the slide plate 502 to run towards the feed inlet 2.

[0045] Specifically, the length of the connecting plate 604 is less than the length of the movable plate 609, and the gap between two adjacent connecting plates 604 is equal to the width of a single movable plate 609. By limiting the length of the connecting plate 604 and the gap between two adjacent connecting plates 604, if there is slag adhering to the movable plate 609, the extension and retraction of the control rod 704 causes the connecting plate 604 to collide with the movable plate 609, thereby completing the self-cleaning of the movable rod.

[0046] Specifically, the smelting furnace 1 is equipped with a control terminal on its exterior, and a control system is installed inside the control terminal. The control system is used to control the electrical components on the device.

[0047] In the initial state, the telescopic end of the hydraulic cylinder 501 is in the retracted state, the mounting head 601 is located above the feed inlet 2, the drive rod 602 and the positioning rod 611 are both in the retracted state, the protrusion 701 is located at the bottom of the "bow" shaped groove 703, and the connecting plate 604 and the movable plate 609 are in a straight line (specifically as shown in the figure). Figure 6 and Figure 7 (As shown).

[0048] Since the slag buildup at feed inlet 2 causes different types of blockage at feed inlet 2, this device will describe two different situations.

[0049] Firstly, the portion of feed inlet 2 near the furnace is not completely blocked, allowing materials transported via conveying pipes or electric grabs to still enter the smelting furnace 1 through feed inlet 2. During operation, the control system first controls the rotation of the guide wheels 401 on both sides of the guide rail 3, causing the guide wheels 401 to drive the support plate 402 in a linear motion along the guide rail 3. Since the guide rail 3 has an "I"-shaped cross-section, and both guide wheels 401 on both sides of a single guide rail 3 are in contact with the vertical portion of the guide rail 3, the horizontal portion of the guide rail 3 can limit the movement of the guide wheels 401, thus preventing the guide wheels 401 from slipping off the guide rail 3 during the movement of the support plate 402. Since the upper surfaces of both support plates 402 are provided with support frames 403, and the tops of the two support frames 403 are jointly provided with a fixed plate 404, the support plates 402 synchronously drive the fixed plate 404 to move through the support frames 403 during the operation of the guide wheel 401. When the center point of the fixed plate 404 is in a straight line with the center of the feed inlet 2, the guide wheel 401 stops running. Since the hydraulic cylinder 501 is fixedly installed at the center point of the lower surface of the fixed plate 404, and the center of the hydraulic cylinder 501 and the center of the mounting head 601 are on the same straight line, after the guide wheel 401 stops running, the center of the mounting head 601 and the center of the feed inlet 2 are also on the same straight line.

[0050] Since the feed inlet 2 consists of two parts, namely an inverted cone and a cylindrical part, with the inverted cone located above the cylindrical part, when the mounting head 601 moves to directly above the feed inlet 2, the control system controls the extension end of the hydraulic cylinder 501 to extend. The hydraulic cylinder 501 pushes the rotary motor 503 to move downward along the slide rail 12 through the slide plate 502, ultimately causing the mounting head 601 to enter the inverted cone of the feed inlet 2.

[0051] The control system simultaneously controls the extension of the drive rod 602 and the positioning rod 611, thereby causing the drive rod 602 and the positioning rod 611 to drive the connecting plate 604 and the movable plate 609 to move towards the inner wall of the inverted cone portion of the feed inlet 2, respectively. The extension speed of the drive rod 602 is faster than that of the positioning rod 611, causing the connecting plate 604 to deflect away from the rotating mounting head 601 around the connection point between the connecting plate 604 and the "U"-shaped connecting frame 610, ultimately making the connecting plate 604 fit against the inverted cone portion of the feed inlet 2. Since the top of the connecting plate 604 has a movable groove 605 for the crossbar 603 to move, when the connecting plate 604 deflects, the movable groove 605 provides space for the crossbar 603 to move, avoiding obstruction of the crossbar 603 from deflecting the connecting plate 604.

[0052] As the connecting plate 604 deflects around the connection point between the connecting plate 604 and the "U"-shaped connecting frame 610, the adjusting rod 704 is in a fixed state at this time. The protrusion 701 is located at the bottom of the "bow"-shaped groove 703 on the movable block 702, and the protrusion 701 is not concentric with the connecting rod 608. Therefore, as the connecting plate 604 deflects around the connection point between the connecting plate 604 and the "U"-shaped connecting frame 610, the connecting plate 604 simultaneously drives the adjusting rod 704 in the through hole 607 to deflect, thus adjusting... Rod 704 presses against protrusion 701 on connecting rod 608 through the "bow"-shaped groove 703 on movable block 702, causing connecting rod 608 to drive movable plate 609 to deflect in the opposite direction around the connection point between connecting rod 608 and through hole 607. Ultimately, movable plate 609 also comes into contact with the inverted conical part of feed inlet 2, with movable plate 609 and connecting plate 604 forming an oblique line. At this time, the control system simultaneously starts hydraulic cylinder 501 and rotary motor 503, with hydraulic cylinder 501 pushing rotary motor 503 and mounting head 601 to descend. The output shaft of the rotary motor 503 drives the mounting head 601 to rotate. During the rotation of the mounting head 601, the mounting head 601 drives the movable plate 609 and the connecting plate 604 to rotate synchronously through the drive rod 602 and the positioning rod 611. At the same time as the movable plate 609 and the connecting plate 604 rotate, the serrated plates 8 on the movable plate 609 and the connecting plate 604 scrape off the slag on the feed inlet 2. When the serrated plates 8 come into contact with the slag on the feed inlet 2, the slag with a lighter degree of adhesion will be scraped off directly, while the slag with a heavier degree of adhesion will be scraped off. After the slag comes into contact with the serrated plate 8, the heavily adhered slag will squeeze the inclined part of the serrated plate 8, causing the serrated plate 8 to deform by squeezing the elastic element 10 located at the bottom of the slider 9 through the slider 9. That is, the serrated plate 8 moves downward through the slider 9, so that the slag is subjected to two forces in different directions. One is the impact force on the slag when the serrated plate 8 revolves around the mounting head 601, and the other is the pulling force on the slag when the serrated plate 8 moves downward through the slider 9, so that the slag falls off the inner wall of the feed port 2 more effectively.

[0053] While the movable plate 609 and connecting plate 604 clean the slag buildup on the conical portion of the feed inlet 2, the control system controls the drive rod 602 and positioning rod 611 to retract at the same speed, ensuring that the serrated plates 8 on the movable plate 609 and connecting plate 604 continuously clean the slag buildup on the conical portion of the feed inlet 2. When the hydraulic cylinder 501 pushes the mounting head 601 to the junction of the conical and cylindrical portions of the feed inlet 2, the control system temporarily stops the hydraulic cylinder 501, then controls the drive rod 602 and positioning rod 611 to continue retracting. The contraction speed is greater than the contraction speed of the positioning rod 611, which eventually causes the connecting plate 604 and the movable plate 609 to flip around the connection point of the "U"-shaped connecting frame 610 and the through hole 607. As a result, the connecting plate 604 and the movable plate 609 form a straight line, and the outer surfaces of the connecting plate 604 and the movable plate 609 come into contact with the inner wall of the cylindrical part of the feed inlet 2. At this time, the control system controls the drive rod 602 and the positioning rod 611 to stop contracting, and the control system controls the hydraulic cylinder 501 to continue to extend, so that the connecting plate 604 and the movable plate 609 can clean the slag on the cylindrical part of the feed inlet 2.

[0054] When the bottom of the connecting plate 604 moves to be parallel to the bottom of the cylindrical part of the feed inlet 2, the control system controls the hydraulic cylinder 501 to stop extending. At this time, the control system controls the adjusting rod 704 to extend, and at the same time, due to the sliding connection between the protrusion 701 and the "bow"-shaped groove 703 (as shown in the image), the hydraulic cylinder 501 stops extending. Figure 5 As shown in the diagram, during the extension of the adjusting rod 704, the "bow"-shaped groove 703 on the movable block 702 presses against the protrusion 701 on the connecting column. By setting the shape of the "bow"-shaped groove 703, when the movable block 702 moves down, the inclined part of the "bow"-shaped groove 703 presses against the protrusion 701 on the connecting rod 608 and deflects it away from the mounting head 601. When the protrusion 701 runs to the bend of the "bow"-shaped groove 703, the connecting plate 604 and the movable plate 609 are at right angles. The outer side of the movable plate 609 contacts the part below the feed inlet 2 near the furnace. As the rotary motor 503 continues to rotate, the outer side of the movable plate 609 cleans the skirt generated by the part below the feed inlet 2 near the furnace.

[0055] Simultaneously, when the movable plate 609 and connecting plate 604 clean the inner wall of the feed inlet 2, the slag on the inner wall of the feed inlet 2 is in a molten state. This molten slag, during the rotation of the movable plate 609 and connecting plate 604, blocks the gaps between the serrations on the serrated plate 8. Consequently, during subsequent rotation of the movable plate 609 and connecting plate 604, the molten slag adheres to the same side surfaces of the movable plate 609 and connecting plate 604, reducing the space between the two connecting plates 604. This allows for adjustment... When the adjustment rod 704 adjusts the angle between the movable plate 609 and the connecting plate 604, the space between the two connecting plates 604 becomes smaller, causing the elongation of the adjustment rod 704 per unit time to change. This indicates that slag adheres to the surfaces of the movable plate 609 and the connecting plate 604. The adjustment rod 704 can be controlled to reciprocate, causing the movable plate 609 to reciprocate around the connecting rod 608 as the center. This causes the movable plate 609 to collide with the connecting plate 604, thereby cleaning the slag adhering to the movable block 702.

[0056] When the part of the feed inlet 2 near the furnace is completely blocked, the material conveyed by the conveying pipe or electric grab bucket cannot enter the interior of the smelting furnace 1 through the feed inlet 2; at this time, the drive displacement component 4 drives the drive component 5 and the cleaning component 6 to move above the feed inlet 2.

[0057] The control system controls the extension and retraction of the drive rod 602 and the positioning rod 611, so that the connecting plates 604 arranged in a row on the mounting head 601 and the movable plates 609 form an inverted conical drill bit structure, with the bottoms of all the movable plates 609 in contact (specifically as shown in the figure). Figure 8 As shown, the diameter of the inverted conical structure formed by the connecting plate 604 and the movable plate 609 is smaller than the diameter of the cylindrical part of the feed inlet 2. Then, the control system controls the extension of the hydraulic cylinder 501 and the operation of the rotary motor 503. As the extension end of the hydraulic cylinder 501 extends, the output shaft of the rotary motor 503 drives the drill bit formed by the connecting plate 604 and the movable plate 609 to move towards the bottom of the feed inlet 2. The connecting plate 604 and the movable plate 609 drill holes in the slag blocking the cylindrical part of the feed inlet 2 until the slag is cleared. After the connecting plate 604 and the movable plate 609 have drilled through the slag-laden part, the hydraulic cylinder 501 stops extending and the rotary motor 503 stops rotating. The material blocking the cylindrical part of the feed inlet 2 flows into the smelting furnace 1 through the drilled hole. Since the connecting plate 604 and the movable plate 609 are fixedly connected to the mounting head 601 through the drive rod 602 and the positioning rod 611 respectively, the positioning rod 611 and the drive rod 602 will not obstruct the flow of material as it flows into the smelting furnace 1 through the hole.

[0058] After drilling through the slag-laden cylindrical portion of the feed inlet 2, the control system continues to extend the hydraulic cylinder 501, causing the mounting head 601 to move below the cylindrical portion of the feed inlet 2. Then, the control system stops extending the hydraulic cylinder 501 and extends the positioning rod 611 and drive rod 602, causing the connecting plate 604 and movable plate 609 to move towards the inner wall of the feed inlet 2. This causes the top of the connecting plate 604 to misalign with the edge of the drilled hole. The control system then controls the hydraulic cylinder 501 to reciprocate in and out. During this reciprocating motion, the control system also controls the adjusting rod 704 to reciprocate in and out. During the extension of the adjusting rod 704, the connecting rod... 608 drives the movable plate 609 to deflect towards the inner wall of the feed inlet 2, ultimately making the bottom of the movable plate 609 higher than the top of the connecting plate 604. During the retraction of the adjusting rod 704, the connecting rod 608 drives the movable plate 609 to deflect towards the mounting head 601, ultimately making the bottom of the movable plate 609 lower than the top of the connecting plate 604. Thus, during the reciprocating extension and retraction of the hydraulic cylinder 501, the connecting rod 608 and the movable plate 609 alternately collide with the skirt at the bottom of the feed inlet 2, causing the skirt and the bottom of the feed inlet 2 to vibrate. This, in turn, accelerates the speed at which the skirt falls off from the bottom of the feed inlet 2 with the cooperation of the movable plate 609 and the connecting plate 604.

[0059] While the connecting rod 608 and the movable plate 609 alternately collide with the slag at the bottom of the feed inlet 2, the movable plate 609 is controlled by the adjusting rod 704. When the adjusting rod 704 drives the movable plate 609 to deflect towards the inner wall of the feed inlet 2, the system detects whether slag appears on the surface of the movable plate 609 and the connecting plate 604 by detecting the elongation of the adjusting rod 704 per unit time. If the elongation of the adjusting rod 704 per unit time is lower than the set value, the control system controls the elongation speed of the adjusting rod 704 to increase, so that the movable plate 609 first collides with the slag on the connecting plate 604, completing self-cleaning; at the same time, During the self-cleaning process, the vibration caused by the impact between the movable plate 609 and the connecting plate 604 causes the connecting plate 604 itself to vibrate. Since the connecting plate 604 and the knot are in a state of mutual contact after the impact, the movable plate 609, while removing the knots on the connecting plate 604, causes the connecting plate 604 to transmit secondary vibration to the knots, preventing the vibration between the knots and the bottom of the feed inlet 2 from stopping during the self-cleaning process. Then, as the movable plate 609 continues to deflect, its bottom end becomes higher than the top of the connecting plate 604 and impacts the knots at the bottom of the feed inlet 2. After cleaning the knots at the bottom of the feed inlet 2, the control system restores the electrical components on the mounting head 601 to their initial state, and then controls the hydraulic cylinder 501 to retract, causing the output shaft of the rotary motor 503 to drive the mounting head 601 away from the feed inlet 2.

[0060] A method for using an automatic cleaning device for the feed inlet of a bottom-blown furnace, comprising the following steps:

[0061] S1: The control terminal controls the guide wheel 401 to drive the support frame 403 to move linearly along the guide rail 3, so that the hydraulic cylinder 501 on the connecting plate 604 and the feed port 2 on the melting furnace 1 are on the same straight line.

[0062] S2: The control terminal controls the extension end of the hydraulic cylinder 501 to extend and controls the rotary motor 503 to operate. The hydraulic cylinder 501 pushes the rotary motor 503 down through the slide plate 502, thereby causing the output shaft of the rotary motor 503 to drive the mounting head 601 into the inside of the feed port 2.

[0063] S3: The control system controls the contraction or extension of the drive rod 602, the positioning rod 611 and the adjusting rod 704, thereby adjusting the different states of the connecting plate 604 and the movable plate 609 inside the feed inlet 2. The rotation of the mounting head 601 causes the connecting plate 604 and the movable plate 609 to clean the slag on the inner wall of the feed inlet 2.

[0064] S4: After the connecting plate 604 and the movable plate 609 have finished cleaning the slag on the inner wall of the feed inlet 2, the control system controls the drive rod 602, the positioning rod 611 and the adjusting rod 704 to retract or extend, so that the connecting plate 604 and the movable plate 609 are in a straight line parallel to the axis of the mounting head 601. Then the control system controls the extension end of the hydraulic cylinder 501 to retract, so that the mounting head 601 moves to directly above the feed inlet 2.

[0065] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic cleaning device for the charging port of a bottom-blown furnace, comprising a smelting furnace and a charging port, characterized in that: The smelting furnace is provided with symmetrically distributed guide rails above it, and a displacement component is provided on the guide rails. The displacement component is provided with a drive component inside, and a cleaning component for cleaning the feed inlet is provided on the drive component. The cleaning assembly includes a mounting head. An array of drive rods is provided on the top sidewall of the mounting head. A crossbar is fixedly connected to the end of each drive rod away from the mounting head. Connecting plates are provided at both ends of each crossbar. Movable slots are formed on the top of each connecting plate. Stops with a diameter larger than the width of the movable slots are provided at both ends of the crossbar. Through holes are formed at the bottom of each connecting plate. A connecting rod is provided between the two through holes. An adjusting assembly is provided between the connecting rod and the through holes. A movable plate is fixedly connected to the connecting rod. A U-shaped connecting frame is rotatably connected to the outer sides of the bottom of each connecting plate through the through holes. The end of the U-shaped connecting frame away from the connecting plate is fixedly connected to the bottom sidewall of the mounting head via a positioning rod. The adjustment assembly includes a protrusion fixedly connected to the end of the connecting rod, a movable block slidably connected to the connecting plate on the outer side of the protrusion, an "arch"-shaped groove adapted to the protrusion on the movable block, and an adjustment rod fixedly connected to the connecting plate on the top of the movable block. Both the connecting plate and the movable plate have serrated plates on their outer side walls. Both the connecting plate and the movable plate have sliding grooves inside. Sliders that are fixedly connected to the serrated plates are slidably connected inside the sliding grooves. Both the upper and lower ends of the sliders are provided with elastic elements. The ends of the two elastic elements away from the sliders are fixedly connected to the sliding grooves.

2. The automatic cleaning device for the bottom-blown furnace feed port according to claim 1, characterized in that: The displacement component includes guide wheels respectively disposed on both sides of two guide rails. A support plate is rotatably connected above the guide wheel corresponding to a single guide rail. A support frame is fixedly connected to the top of the support plate. A fixed plate is fixedly connected to the top of the support frame. The drive component is located on the lower surface of the fixed plate.

3. The automatic cleaning device for the bottom-blown furnace feed port according to claim 2, characterized in that: The drive assembly includes a hydraulic cylinder fixedly connected to the lower surface of the fixed plate. A sliding plate is fixedly connected to the telescopic end of the hydraulic cylinder. A rotary motor is fixedly connected to the lower surface of the sliding plate. A sliding plate is fixedly connected to the bottom of the rotary motor. The output end of the rotary motor extends through the sliding plate and is fixedly connected to the upper surface of the mounting head.

4. The automatic cleaning device for the bottom-blown furnace feed port according to claim 1, characterized in that: The drive rod, the positioning rod, and the adjusting rod are all electric push rods.

5. The automatic cleaning device for the bottom-blown furnace feed port according to claim 4, characterized in that: Both the drive rod and the positioning rod are provided with metal bellows on their outer surfaces. The end of the metal bellows on the drive rod away from the mounting head is fixedly connected to the crossbar, and the end of the metal bellows on the positioning rod away from the mounting head is fixedly connected to the "U"-shaped connecting frame.

6. The automatic cleaning device for the bottom-blown furnace feed port according to claim 3, characterized in that: Each of the two support frames is fixedly connected to a slide rail on one side, and both sides of the slide plate and the sliding plate are slidably connected to the slide rail.

7. The automatic cleaning device for the bottom-blown furnace feed port according to claim 1, characterized in that: The length of the connecting plate is less than the length of the movable plate, and the gap between two adjacent connecting plates is equal to the width of a single movable plate.

8. The automatic cleaning device for the bottom-blown furnace feed port according to claim 1, characterized in that: The furnace is equipped with a control terminal on its exterior and a control system inside the control terminal. The control system is used to control the electrical components on the device.

9. A method of using an automatic cleaning device for the feed inlet of a bottom-blown furnace, wherein the method of use is applied to the automatic cleaning device as described in any one of claims 1-8, characterized in that: The method of use includes the following steps: S1: The control terminal controls the guide wheel to drive the support frame to move linearly along the guide rail, so that the hydraulic cylinder on the connecting plate and the feed port on the melting furnace are on the same straight line. S2: The control terminal controls the extension end of the hydraulic cylinder to extend and controls the rotation motor to operate. The hydraulic cylinder pushes the rotation motor downward through the slide plate, thereby causing the output shaft of the rotation motor to drive the mounting head into the inside of the feed port. S3: The control system controls the contraction or extension of the drive rod, positioning rod, and adjusting rod, thereby adjusting the different states of the connecting plate and the movable plate inside the feed inlet. The rotation of the mounting head enables the connecting plate and the movable plate to clean the slag on the inner wall of the feed inlet. S4: After the connecting plate and the movable plate have cleaned the slag on the inner wall of the feed inlet, the control system controls the drive rod, positioning rod and adjusting rod to retract or extend, so that the connecting plate and the movable plate are in a straight line parallel to the axis of the mounting head. Then the control system controls the extension end of the hydraulic cylinder to retract, so that the mounting head moves to directly above the feed inlet.

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