A kind of ore smelting furnace electrode paste feeding system

Abstract

This invention provides a feeding system for electrode paste in a submerged arc furnace, relating to the field of transportation and storage devices. The invention includes a working surface located above the furnace body or equipment where feeding takes place. A feeding mechanism, a conveying mechanism, and a discharging mechanism are disposed on the working surface. The conveying mechanism includes at least one conveying trolley operating between the feeding mechanism and the discharging mechanism. The discharging mechanism includes a support frame with a liftable support. The support frame has a first drive assembly for driving the support frame to move up and down. The support frame has a feed inlet. A retractable feed pipe assembly communicating with the feed inlet is located at the bottom of the support frame. The support frame has a second drive assembly for driving the feed pipe assembly to extend and retract. This invention improves working efficiency, as the feed pipe shortens and moves away from the high-temperature zone after feeding.

Description

Technical Field

[0001] This invention relates to the field of transportation and storage equipment technology, and specifically to a submerged arc furnace electrode paste feeding system. Background Technology

[0002] A submerged arc furnace, also known as an electric arc furnace or resistance furnace, is mainly used for reducing and smelting ores, carbonaceous reducing agents, and solvents. It mainly produces ferrosilicon, ferromanganese, ferrochrome, ferrotungsten, ferrosilicon manganese alloy, and other ferroalloys, which are important industrial raw materials in the metallurgical industry and chemical raw materials such as calcium carbide.

[0003] In the existing technology, the electrode paste added during the operation of the electric arc furnace is mainly added manually, which is labor-intensive and inefficient. In addition, the feed pipes used for feeding are subjected to high temperatures inside the furnace for a long time, making them prone to damage. Summary of the Invention

[0004] The purpose of this invention is to develop a feeding system for electric arc furnace electrode paste that improves work efficiency by shortening the feed pipe after feeding, thus moving it away from the high-temperature zone.

[0005] This invention is achieved through the following technical solution:

[0006] A submerged arc furnace electrode paste feeding system includes:

[0007] The working face is located at the top of the furnace body or equipment where materials are being fed.

[0008] The feeding mechanism, conveying mechanism, and unloading mechanism are located on the working surface;

[0009] The material handling mechanism includes at least one material handling trolley that operates between the feeding mechanism and the unloading mechanism;

[0010] The feeding mechanism includes a bracket, a liftable support on the bracket, a first drive assembly on the bracket to drive the support to move up and down, a feed inlet on the support, a retractable material tube assembly at the bottom of the support that communicates with the feed inlet, and a second drive assembly on the support to drive the material tube assembly to extend and retract.

[0011] Optionally, the feeding mechanism includes a vertically arranged material elevator, a vibrating feeder at the bottom of the material elevator, the top of the material elevator above the working surface, a material transverse conveyor belt on the working surface below the top of the material elevator, a hopper on the working surface below the end of the material transverse conveyor belt, and a material conveyor belt for outputting materials on the hopper.

[0012] Optionally, the material transport trolley includes a traveling part and a loading part. The loading part is located on top of the traveling part and includes a material trough. The bottom of the material trough is closed and the top is open. A feeding conveyor belt is provided in the middle of the bottom of the material trough. An opening with a width smaller than the width of the inner wall of the material trough is provided at the end of the feeding conveyor belt. The side wall of the opening is sloped to the two inner walls of the material trough. A baffle is provided inside the opening. A material gate assembly for controlling the opening opening is provided outside the opening.

[0013] Optionally, the material gate assembly includes a material gate hinged to the outer wall of the bottom material trough outside the opening. The bottom end of the material gate is hinged to the outer wall of the material trough. The two sides of the material gate are respectively provided with guard plates perpendicular to them. The outer walls of the material trough on both sides of the opening are respectively provided with slots whose position and size correspond to the guard plates. The height of the material gate is higher than the opening. The material gate above the opening is provided with guide plates that are respectively connected to the two guard plates. The ends of the two guide plates at the top of the material gate are close to each other and inclined. Pull plates are respectively provided on both sides of the material gate near the hinge end with the material trough. A linear actuator that is hinged to the pull plates is provided inside the material trough.

[0014] Optionally, the first drive assembly includes a guide rod and a drive screw vertically disposed on both sides of the support and connected to the bracket. The guide rod is slidably connected to the side of the support, and the drive screw is rotatably connected to the bracket and threadedly connected to the support. The top of the bracket is provided with a drive motor that is pulsatorically connected to the drive screw.

[0015] Optionally, the top of the bracket is provided with a first transmission box that is respectively connected to two drive screws, and a transmission rod is connected between the two first transmission boxes. The drive motor is connected to one of the first transmission boxes.

[0016] Optionally, the material tube assembly includes an inner tube, one or more intermediate tubes, and an outer tube arranged sequentially from the inside to the outside. The inner tube is connected to the bottom of the support and communicates with the feed inlet. The inner tube, intermediate tubes, and outer tube are all provided with sliding limiting structures. The second drive component drives the outer tube to rise and fall.

[0017] Optionally, the second drive assembly includes two rotating rods rotatably mounted on supports on both sides of the material tube assembly. The two rotating rods are arranged horizontally and parallel to each other. Two cylindrical winding columns are coaxially connected to the rotating rods. The winding columns are provided with winding grooves arranged in a spiral trajectory along their outer circumference. A pull rope connected to the outer tube is wound in the winding grooves. A lifting motor connected to the rotating rods is provided on the support. A guide rope structure that cooperates with the pull rope is provided between the winding column and the outer tube.

[0018] Optionally, the support side is provided with a second transmission box that is connected to the lifting motor. A horizontal transmission shaft is rotatably provided on the second transmission box. The two ends of the transmission shaft are coaxially connected to a first bevel gear. The ends of the two rotating rods near the transmission shaft extend out of the support and are coaxially connected to a second bevel gear. The second bevel gears on the two rotating rods mesh with the first bevel gears at both ends of the transmission shaft.

[0019] Optionally, the guide rope structure includes a first roller rotatably mounted on the side of the winding column near the material tube assembly. The first roller is rotatably connected to a support. A second roller rotatably connected to the support is provided at the lower part of the first roller. Both the first roller and the second roller are arranged parallel to the winding column. An upper guide plate is connected to the outer edge of the outer tube near the top of the second roller. A lower guide plate is connected to the outer wall of the outer tube below the upper guide plate. Wire holes for cooperating with the pull ropes on the two winding columns are respectively opened on both sides of the upper guide plate. A connection hole for connecting the pull rope is provided on the lower guide plate directly below the two wire holes. The pull rope passes through the first roller and the second roller in sequence, and then passes through the wire hole and connects to the connection hole.

[0020] The beneficial effects of this invention are:

[0021] The feeding mechanism of this invention delivers materials to the top of the electric arc furnace or equipment for temporary storage. When unloading is required, the temporarily stored materials are transported to the unloading mechanism by the material conveying mechanism. The whole process is highly automated, and the efficiency of unloading operations is greatly improved compared with traditional manual operations, while the labor intensity of manual labor is greatly reduced. When the unloading mechanism unloads materials, its pipeline extends downwards. After unloading is completed, it can shorten and rise away from the high temperature zone below, protecting the unloading pipeline from long-term high temperature. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of the present invention;

[0024] Figure 2 This is a structural diagram from another perspective of the present invention;

[0025] Figure 3 Here is a structural diagram of the material transport trolley;

[0026] Figure 4 This is a structural diagram of the material transport trolley from another perspective.

[0027] Figure 5 This is a diagram of the internal structure of the material transport trolley;

[0028] Figure 6 This is a structural diagram of the feeding mechanism from a first-person perspective;

[0029] Figure 7 This is a structural diagram of the feeding mechanism from a second-person perspective;

[0030] Figure 8 This is a structural diagram of the feeding mechanism from a third-person perspective.

[0031] Reference numerals: 100, working face; 200, feeding mechanism; 201, material elevator; 202, vibrating feeder; 203, material transverse conveyor belt; 204, hopper; 300, material handling mechanism; 301, traveling part; 302, trough; 303, unloading conveyor belt; 304, baffle plate; 305, material gate; 306, infrared laser sensor; 307, guard plate; 308, guide plate; 309, pull plate; 310, linear actuator; 400, unloading mechanism; 401, bracket; 402, support; 403 404. Feed inlet; 405. Drive motor; 406. First transmission box; 407. Transmission rod; 408. Lifting motor; 409. Second transmission box; 410. Transmission shaft; 411. Guide rod; 412. Drive screw; 413. Mounting plate; 414. Outer tube; 415. Cable chain; 416. Lower guide plate; 417. Upper guide plate; 418. Limit switch; 419. Rotating rod; 420. Winding post; 421. First roller; 422. Second roller; 423. Wire hole; 424. Connecting hole; 500. Safety house. Detailed Implementation

[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0034] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] like Figures 1-8 As shown, this invention discloses an electrode paste feeding system for a submerged arc furnace, including a working surface 100 located above the furnace body or equipment for feeding. The working surface 100 can be the top of a factory building. The working surface 100 is equipped with a feeding mechanism 200, a conveying mechanism 300, a discharging mechanism 400, and a safety room 500. The feeding mechanism 200 transfers materials from the ground or elsewhere to the working surface 100. The conveying mechanism 300 transfers the materials delivered by the feeding mechanism 200 to the discharging mechanism 400. The discharging mechanism 400 then sends the materials into the furnace body or equipment below. The safety room 500 serves as a control room and personnel activity area.

[0037] The feeding mechanism 200 includes a vertically arranged material elevator 201, a vibrating feeder 202 at the bottom of the material elevator 201, the top of the material elevator 201 above the working surface 100, an inclined material transverse conveyor belt 203 on the working surface 100 below the top of the material elevator 201, the bottom end of the material transverse conveyor belt 203 is the conveying start end, located below the top of the material elevator 201, the top end of the material transverse conveyor belt 203 is the conveying end end, a hopper 204 is provided on the working surface 100 below the top end of the material transverse conveyor belt 203, and a material conveyor belt for outputting materials is provided on the hopper 204.

[0038] The material conveying mechanism 300 includes a conveying area located on the working surface 100. The conveying area is paved with steel plates and has two material conveying trolleys. The material conveyor belt discharge end and the unloading mechanism 400 are located in the conveying area. After the material conveying trolleys load materials at the material conveyor belt discharge end, they transfer the materials to the unloading mechanism 400.

[0039] The material handling trolley includes a walking unit 301 and a carrying unit. The walking unit 301 includes a chassis with multiple laser rangefinders on the side wall of the chassis and four rollers at the bottom of the chassis. The chassis contains a drive source that is connected to the rollers. The chassis also contains an explosion-proof box, which contains the electrical control components of the material handling trolley. The walking unit 301 is actually an AGV (AGV intelligent handling robot), which is existing technology and will not be described in detail here.

[0040] The material-carrying section is located at the top of the traveling section 301 and includes a material trough 302. The material trough 302 is closed at the bottom and open at the top. When the material transport trolley moves to the discharge end of the material conveyor belt, the material conveyor belt outputs the material from the hopper 204, causing the material to fall into the material trough 302. The material trough 302 is rectangular in shape, and a discharge conveyor belt 303 is arranged along the length of the material trough 302 in the middle of the bottom.

[0041] The material trough 302 at the end of the feeding conveyor belt 303 has an opening. The width of the opening is smaller than the width of the inner wall of the material trough 302. The side wall of the opening and the two inner walls of the material trough 302 in the width direction are sloped to transition. A baffle plate 304 is provided in the opening. The baffle plate 304 is arranged horizontally and connected to the two inner walls of the opening. There is a certain gap between the bottom of the baffle plate 304 and the end of the feeding conveyor belt 303. The material is mainly fed between the baffle plate 304 and the feeding conveyor belt 303. The baffle plate 304 prevents the material in the material trough 302 from tipping over when it is fed.

[0042] The bottoms of the troughs 302 on both sides of the feeding conveyor belt 303 are inclined in the width direction of the trough 302 and the lower end is on the feeding conveyor belt 303. The feeding conveyor belt 303 and the trough 302 are in sliding contact. The inclination of the bottom of the trough 302 ensures that the material can eventually slide onto the feeding conveyor belt 303. The feeding conveyor belt 303 is provided with side plates on both sides that are connected to the trough 302. The rollers and two rotary wheels inside the feeding conveyor belt 303 are rotatably connected to the side plates. The side plates are also provided with a drive source that is connected to the rotary wheels of the feeding conveyor belt 303.

[0043] A material gate 305 assembly is provided on the outer side of the opening, which controls the opening and closing of the opening. The material gate 305 assembly includes a material gate 305 hinged to the outer wall of the bottom material trough 302 on the outer side of the opening. The material gate 305 is plate-shaped, with its bottom end hinged to the outer wall of the material trough 302. Protective plates 307 are provided on both sides of the material gate 305, perpendicular to the material gate 305. Slots corresponding to the dimensions of the protective plates 307 are provided on the outer walls of the material trough 302 on both sides of the opening. When the material gate 305 closes the opening, the material gate 305 is vertical, and the two protective plates 307 slide into the two slots respectively. The height of the material gate 305 is higher than the opening. Guide plates 308, connected to the two protective plates 307 respectively, are provided on the material gate 305 above the opening. The guide plates 308 are arranged at an angle, with the ends of the two guide plates 308 at the top of the material gate 305 close to each other and inclined. The outer edges of the two side walls of the opening are also provided with elastic sealing gaskets. When the material gate 305 is in a vertical position to block the opening, the sealing gaskets contact the material gate 305 to seal.

[0044] An infrared laser sensor 306 is installed on the outer wall of the material gate 305 near the top. A camera can also be installed on the side of the material gate 305 to measure and observe the material discharge height and discharge status. Pull plates 309 are respectively installed on both sides of the material gate 305 near its hinge end with the material trough 302. The pull plates 309 are connected to the guard plate 307. A linear actuator 310 is installed inside the material trough 302 and is hinged to the pull plates 309. The linear actuator 310 can be a cylinder or an electric push rod, etc. The actuating end of the linear actuator 310 is hinged to the pull plates 309. Its extension and retraction can push the pull plates 309 to make the material gate 305 swing, so that the material gate 305 vertically closes the opening, or swings the material gate 305 outward to the high-end tilted state of the hinge end, so that the material trough 302 can discharge material.

[0045] In addition, if the feeding point is on the ground, the loading section can also be a hopper (not shown in the figure) located on top of the traveling section 301. The top of the hopper is open, and the bottom of the hopper has a discharge port. The bottom of the hopper around the discharge port has a sloping structure, which makes it easy for the material to slide into the discharge port. A switchable material valve is installed in the discharge port, and a slot through which the material loading section communicates with the discharge port is connected. When discharging, the material transport trolley moves to the discharge point, so that the slot and discharge port are in the discharge position, and then the material valve opens to allow the material in the hopper to fall into the discharge point.

[0046] The feeding mechanism 400 includes a bracket 401, which has a cuboid shape. The bracket 401 has a liftable support 402 on its inner side. The support 402 has a frustum-shaped feed inlet 403 with the small diameter end facing downward. The bracket 401 has a first drive assembly for driving the support 402 to move up and down. The bottom of the support 402 has a material tube assembly that is retractable. The support 402 has a second drive assembly for driving the material tube assembly to move up and down.

[0047] The first drive assembly includes two guide rods 410 vertically disposed on both sides of the support 402. The guide rods 410 are connected to the bracket 401. Guide sleeves that are slidably sleeved on the guide rods 410 are connected to both sides of the support 402, providing a cooperation between the guide rods 410 and the guide sleeves, so that the support 402 can be vertically raised and lowered.

[0048] A drive screw 411 is provided between the two guide rods 410 on both sides of the support 402. The drive screw 411 is vertically set and rotatably connected to the bracket 401. Threaded sleeves that are threadedly engaged with the drive screw 411 are provided at corresponding positions on both sides of the support 402. A first transmission box 405 is provided on the top of the bracket 401 above the two drive screws 411. The first transmission box 405 contains a meshing worm gear and a worm. The worm gear is coaxially connected to the drive screw 411 at the bottom of the first transmission box 405. A transmission rod 406 is provided between the two first transmission boxes 405. The two ends of the transmission rod 406 are respectively connected to the worm in the two first transmission boxes 405 through couplings. A drive motor 404 is also provided on the top of the bracket 401. Gears are coaxially connected to the worm in one of the first transmission boxes 405 and the shaft of the drive motor 404. The two gears are driven by a chain. A vertically arranged mounting plate 412 is provided on the bracket 401 on one side of the support 402. A cable chain 414 connected to the support 402 is provided on the mounting plate 412, and the wiring is arranged in the cable chain 414.

[0049] The drive motor 404 drives the worm gear in the corresponding first transmission box 405 to rotate via chain transmission. The transmission rod 406 causes the worm gear in the other first transmission box 405 to rotate synchronously. The synchronous rotation of the worm gears in the two first transmission boxes 405 drives the worm wheel to rotate. The worm wheel drives the drive screw 411 to rotate, so that the two first transmission boxes 405 work synchronously and drive the two drive screws 411 to rotate synchronously. The rotation of the drive screw 411 engages with the threaded sleeve. The forward and reverse rotation of the drive screw 411 drives the support 402 to rise and fall vertically along the guide rod 410.

[0050] The feed tube assembly includes an inner tube, a middle tube, and an outer tube 413 arranged sequentially from the inside out. Specifically, the middle tube is fitted onto the outer wall of the inner tube, and the outer tube 413 is fitted onto the outer wall of the middle tube. Each of the inner tube, middle tube, and outer tube 413 is equipped with a sliding limiting structure, which consists of retaining rings located at the top and bottom of the tubes. These retaining rings extend a certain width inwards and outwards from the tubes, respectively. The retaining ring at the bottom of the inner tube slides between the top and bottom retaining rings of the outer tube. In this embodiment, there is one middle tube. If it is necessary to increase the maximum elongation of the feed tube assembly, the number of middle tubes can be increased, while the inner tube, multiple middle tubes, and outer tube 413 are still arranged sequentially.

[0051] The inner tube is connected to the bottom of the support 402 and communicates with the feed inlet 403 of the support 402. The second drive assembly drives the outer tube 413 to rise and fall, thereby realizing the extension and retraction of the tube assembly. When the tube assembly extends downward, the outer tube 413 descends, and one or more intermediate tubes also descend under the action of gravity. When the maximum extension is reached, the retaining ring at the top of the outer tube presses against the retaining ring at the bottom of the inner tube. When the tube assembly shortens upward, the outer tube 413 rises, and the retaining ring at the bottom of the outer tube contacts the bottom surface of the retaining ring at the bottom of the inner tube, driving the inner tube to rise. Multiple tubes from bottom to top sequentially drive their inner tubes to rise, thereby shortening the tube assembly. The length of the tube assembly can also be adjusted by controlling the rise and fall of the outer tube 413.

[0052] The second drive assembly includes two rotating rods 418 rotatably mounted on supports 402 on both sides of the feed tube assembly. The two rotating rods 418 are horizontal and parallel to each other. The two rotating rods 418 are symmetrically arranged on both sides of the feed tube assembly in the radial direction. Two cylindrical winding posts 419 are coaxially connected to the rotating rods 418. Each of the two winding posts 419 is provided with a winding groove arranged in a spiral trajectory along its outer circumference.

[0053] A lifting motor 407 is mounted on the top of the support 402. A second transmission box 408, which is connected to the lifting motor 407, is located on the side of the support 402. A horizontal transmission shaft 409 is rotatably mounted on the second transmission box 408. A worm gear, coaxially connected to the transmission shaft 409, is located inside the second transmission box 408. A worm gear, meshing with the worm gear, is coaxially connected to the shaft of the lifting motor 407. First bevel gears are coaxially connected to both ends of the transmission shaft 409. Two rotating rods 418 extend from the support 402 near the ends of the transmission shaft 409 and are coaxially connected to second bevel gears. The second bevel gears on the two rotating rods 418 mesh with the first bevel gears at both ends of the transmission shaft 409. When the lifting motor 407 operates, it drives the transmission shaft 409 to rotate through the worm gear in the second transmission box 408. The transmission shaft 409, through the meshing of the first and second bevel gears at both ends, drives the two rotating rods 418 to rotate synchronously.

[0054] A pull rope is wound inside the winding groove. One end of the pull rope is connected to one end of the winding groove, and the other end of the pull rope comes out from the other end of the winding groove and connects to the top of the outer tube 413. A guide rope structure that cooperates with the pull rope is also provided between the winding post 419 and the outer tube 413. The winding groove has a spiral trajectory to avoid the pull rope from getting tangled on the winding post 419, which would cause the pull rope to become difficult to retract or extend.

[0055] The guide rope structure includes a first roller 420 rotatably mounted on the side of the winding post 419 near the material tube assembly. The first roller 420 is rotatably connected to the support 402. A second roller 421 rotatably connected to the support 402 is located at the lower part of the first roller 420. Both the first roller 420 and the second roller 421 are arranged parallel to the winding post 419. An upper guide plate 416 is connected to the outer edge of the outer tube 413 near the top of the second roller 421. A lower guide plate 415 is also connected to the outer wall of the outer tube 413 below the upper guide plate 416. Both the upper guide plate 416 and the lower guide plate 415 are arc-shaped. The upper guide plate 416 has guide wire holes 422 on both sides, which are designed to engage with the pull ropes on the two winding posts 419. The guide wire holes 422 are located on the vertical tangent of the second roller 421. After the pull ropes are wound around the second roller 421, they can be vertically inserted into the guide wire holes 422. The lower guide plate 415, directly below the two guide wire holes 422, has connecting holes 423 for connecting the pull ropes. The ends of the pull ropes on the two winding posts 419 on the rotating rods 418 on both sides of the material tube assembly are wound around the first roller 420 and the second roller 421 in sequence, and then pass through the guide wire holes 422 and connect to the connecting holes 423.

[0056] The bottom of the support 402 is also equipped with a limit switch 417 that cooperates with the outer tube 413. The trigger end of the limit switch 417 is located on the lifting trajectory of one of the upper guide plates 416 of the outer tube 413. When the material tube assembly is shortened to its shortest length, the outer tube 413 is close to the bottom of the support 402, and the upper guide plate 416 on the outer tube 413 corresponding to the limit switch 417 touches the limit switch 417, causing the lifting motor 407 to stop.

[0057] When the material tube assembly extends or retracts, the lifting motor 407 drives the two rotating rods 418 to rotate synchronously through the second transmission box 408. The two winding columns 419 on the two rotating rods 418 rotate synchronously to retract and extend the pull rope. The retraction and extension of the pull rope drives the outer tube 413 to rise or fall, thereby realizing the extension and retraction control of the material tube assembly.

[0058] The support 401 is located on the working surface 100. Therefore, the working surface 100 and the conveying area are equipped with corresponding telescopic pipe openings for the feeding pipe assembly. The diameter of the pipe opening is adapted to the outer pipe 413, the upper guide plate 416, and the lower guide plate 415, so that the upper guide plate 416 and the lower guide plate 415 can also pass smoothly during the process of the outer pipe 413 rising and falling in the pipe opening.

[0059] During operation, materials are fed into the vibrating feeder 202 via forklifts, loaders, or other equipment. The materials then pass through the material elevator 201 and the material transverse conveyor 203 to enter the hopper 204 for temporary storage. When the feeding mechanism 400 is not feeding, the material tube assembly is shortened to its minimum length, and the support 402 rises to the highest position of the bracket 401. At this time, the bottom end of the material tube assembly is at the pipe opening, which is used to seal the pipe opening and prevent materials, equipment, or personnel from falling. When a material feeding mechanism 400 has a feeding demand, the material transport trolley moves to the hopper 204, and the material temporarily stored in the hopper 204 is fed into the material trough 302 of the material transport trolley. Then, the material transport trolley moves to the feeding mechanism 400, and the support 402 of the feeding mechanism 400 lowers until the top surface of the support 402 is flush with the bottom surface of the material transport trolley. The material pipe assembly extends downward, and then the material gate 305 of the material transport trolley swings outward so that its end is on the feed inlet 403 of the support 402. After the material gate 305 swings outward, it is in an inclined state, and the hinge end of the material gate 305 and the material trough 302 is at the high end. At this time, the infrared laser sensor 306 on the material gate 305 and The camera can also be pointed at the feed inlet 403 to measure the height of the material accumulation inside the feed inlet 403 and observe the feeding situation. The feeding conveyor belt 303 in the material transport trolley moves to make the material in the trough 302 enter the material gate 305. Then, the guard plate 307 and guide plate 308 on the material gate 305 guide the material to slide into the feed inlet 403, realizing the feeding of the material. During the feeding process, the length of the material tube group can be adjusted according to the feeding situation. After the feeding is completed, the material tube group shortens, the material gate 305 of the material transport trolley closes and the material transport trolley leaves the feeding mechanism 400, and the support 402 rises and resets, so that the material tube group is as far away from the furnace body as possible. If the material-carrying section of the material transport trolley is a hopper, after the support 402 is flush with the bottom of the material transport trolley, the material transport trolley moves into the inner side of the bracket 401 and is above the support 402, aligning its slot and discharge port with the feed port 403. Then, the material valve opens, allowing the material in the hopper to fall into the feed port 403, thus achieving material discharge. The above process is automated and can be monitored by personnel in the safety room 500.

[0060] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the technical solutions of the present invention. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of the patent of the present invention.

Claims

1. A feeding system for electrode paste in a submerged arc furnace, characterized in that, include: The working face is located at the top of the furnace body or equipment where materials are being fed. The feeding mechanism, conveying mechanism, and unloading mechanism are located on the working surface; The material handling mechanism includes at least one material handling trolley that operates between the feeding mechanism and the unloading mechanism; The feeding mechanism includes a bracket, a liftable support on the bracket, a first drive assembly on the bracket to drive the support to move up and down, a feed inlet on the support, a retractable material tube assembly at the bottom of the support that communicates with the feed inlet, and a second drive assembly on the support to drive the material tube assembly to extend and retract.

2. The electrode paste feeding system for a submerged arc furnace according to claim 1, characterized in that, The feeding mechanism includes a vertically arranged material elevator, a vibrating feeder at the bottom of the material elevator, the top of the material elevator above the working surface, a material transverse conveyor belt on the working surface below the top of the material elevator, a hopper on the working surface below the end of the material transverse conveyor belt, and a material conveyor belt for outputting materials on the hopper.

3. The electrode paste feeding system for a submerged arc furnace according to claim 1, characterized in that, The material transport trolley includes a traveling section and a loading section. The loading section is located on top of the traveling section and includes a material trough. The bottom of the material trough is closed and the top is open. A material conveyor belt is provided in the middle of the bottom of the material trough. An opening with a width smaller than the width of the inner wall of the material trough is provided at the end of the material conveyor belt. The side wall of the opening is sloped to the two inner walls of the material trough. A baffle is provided inside the opening. A material gate assembly for controlling the opening opening is provided outside the opening.

4. The electrode paste feeding system for a submerged arc furnace according to claim 3, characterized in that, The material gate assembly includes a material gate hinged to the outer wall of the bottom material trough outside the opening. The bottom end of the material gate is hinged to the outer wall of the material trough. The two sides of the material gate are respectively provided with guard plates perpendicular to them. The outer walls of the material trough on both sides of the opening are respectively provided with slots whose position and size correspond to the guard plates. The height of the material gate is higher than the opening. The material gate that is higher than the opening is provided with guide plates that are respectively connected to the two guard plates. The ends of the two guide plates at the top of the material gate are close to each other and inclined. Pull plates are respectively provided on both sides of the material gate near the hinge end with the material trough. A linear actuator that is hinged to the pull plates is provided inside the material trough.

5. The electrode paste feeding system for a submerged arc furnace according to claim 1, characterized in that, The first drive assembly includes a guide rod and a drive screw that are vertically disposed on both sides of the support and connected to the bracket. The guide rod is slidably connected to the side of the support, and the drive screw is rotatably connected to the bracket and threadedly connected to the support. The top of the bracket is provided with a drive motor that is pulsatorically connected to the drive screw.

6. The electrode paste feeding system for a submerged arc furnace according to claim 5, characterized in that, The top of the bracket is provided with a first transmission box that is connected to two drive screws respectively. A transmission rod is connected between the two first transmission boxes. The drive motor is connected to one of the first transmission boxes.

7. The electrode paste feeding system for a submerged arc furnace according to claim 1, characterized in that, The material tube assembly includes an inner tube, one or more intermediate tubes, and an outer tube arranged sequentially from the inside to the outside. The inner tube is connected to the bottom of the support and communicates with the feed inlet. The inner tube, intermediate tube, and outer tube are all provided with sliding limit structures. The second drive component drives the outer tube to rise and fall.

8. The electrode paste feeding system for a submerged arc furnace according to claim 7, characterized in that, The second drive assembly includes two rotating rods rotatably mounted on supports on both sides of the material tube assembly. The two rotating rods are arranged horizontally and parallel to each other. Two cylindrical winding columns are coaxially connected to the rotating rods. The winding columns are provided with winding grooves arranged in a spiral trajectory along their outer circumference. A pull rope connected to the outer tube is wound in the winding grooves. A lifting motor connected to the rotating rods is provided on the support. A guide rope structure that cooperates with the pull rope is provided between the winding column and the outer tube.

9. The electrode paste feeding system for a submerged arc furnace according to claim 8, characterized in that, The support side is provided with a second transmission box that is connected to the lifting motor. A horizontal transmission shaft is rotatably provided on the second transmission box. The two ends of the transmission shaft are coaxially connected to the first bevel gears. The ends of the two rotating rods near the transmission shaft extend out of the support and are coaxially connected to the second bevel gears. The second bevel gears on the two rotating rods mesh with the first bevel gears at both ends of the transmission shaft.

10. The electrode paste feeding system for a submerged arc furnace according to claim 8, characterized in that, The guide rope structure includes a first roller rotatably mounted on the side of the winding column near the material tube assembly. The first roller is rotatably connected to a support. A second roller rotatably connected to the support is located at the lower part of the first roller. Both the first roller and the second roller are arranged parallel to the winding column. An upper guide plate is connected to the outer edge of the outer tube near the top of the second roller. A lower guide plate is connected to the outer wall of the outer tube below the upper guide plate. Wire holes for engaging with the pull ropes on the two winding columns are respectively opened on both sides of the upper guide plate. A connecting hole for connecting the pull rope is provided on the lower guide plate directly below the two wire holes. The pull rope passes through the first roller and the second roller in sequence, and then passes through the wire hole and connects to the connecting hole.

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