Feeding equipment for double-slag-method steelmaking

Abstract

The invention relates to the technical field of steelmaking charging, and discloses charging equipment for double-slag-method steelmaking, which comprises a charging shell, a feeding port is formed in the top of the charging shell, a bottom opening of the charging shell is communicated with the interior of a steelmaking furnace, through holes are formed in two side walls of the charging shell, and a discharging port is formed in the top of the charging shell. When the feeding device is used, steelmaking raw materials are fed into the material storage cavity through the feeding opening, in the steelmaking process, high-temperature flue gas generated in a steelmaking furnace enters the bottom of the interior of the feeding shell, the high-temperature flue gas flows in the feeding shell from bottom to top, and the high-temperature flue gas is fed into the feeding cavity through the feeding opening. Raw materials in the preheating cavity and the material storage cavity are sequentially preheated, when charging is needed, the raw materials in the material storage cavity fall into the preheating cavity, after the raw materials in the preheating cavity are preheated through high-temperature flue gas, the movable screen plate can be driven by the first driving component to turn over and discharge, multiple and effective preheating can be conducted on the steelmaking raw materials, and charging is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of steel-making charging, in particular to a charging device for double-slag steel-making. Background Art

[0002] Iron and steel smelting is a general term for the metallurgical process of steel and iron. Industrially produced iron is divided into pig iron (carbon content above 2%) and steel (carbon content below 2%) according to the carbon content. Most modern ironmaking uses blast furnace ironmaking, and some uses direct reduction ironmaking and electric furnace ironmaking. Steelmaking mainly uses pig iron made in blast furnaces, sponge iron made by direct reduction ironmaking, and scrap steel as raw materials, and uses different methods to make steel. Its basic production process is to smelt iron ore into pig iron in an ironmaking furnace, and then use pig iron as raw material to make steel by different methods, and then cast it into steel ingots or continuous casting billets.

[0003] During the steelmaking process, it is necessary to add materials. However, the existing steelmaking furnace charging equipment cannot effectively preheat the steelmaking raw materials to be heated when in use. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a charging device for double slag steelmaking.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A charging device for double-slag steelmaking, comprising a charging shell, a charging port is provided on the top of the charging shell, a bottom opening of the charging shell is connected to the interior of the steelmaking furnace, through holes are provided on both side walls of the charging shell, an inclined movable baffle is movably installed inside the through hole, and a telescopic component two is provided on the outer side of the charging shell for driving the movable baffle to move in the through hole; a collecting funnel is installed at the bottom of the interior of the charging shell, a storage chamber is provided between the top of the movable baffle and the charging port, and a preheating chamber is provided between the movable baffle and the collecting funnel; a rotating rod is movably installed at the bottom of the interior of the charging shell, a movable mesh plate is installed on the side of the rotating rod, and the side position of the movable mesh plate corresponds to the bottom opening position of the collecting funnel, and a driving component one for driving the rotating rod to rotate is installed on the outer side of the charging shell; a perforation is provided on the side of the movable baffle, and a smoke transition mechanism is provided in the storage chamber for transitioning the smoke entering the storage chamber through the perforation.

[0006] Preferably, one end of the movable baffle extending to the outside of the feeding shell is provided with a mounting wing, one end of the telescopic component 2 is mounted on the outside of the feeding shell, and one end of the piston rod of the telescopic component 2 is connected to the side of the mounting wing.

[0007] Preferably, the smoke transition mechanism includes a fixed seat installed in the storage chamber, the bottom of the fixed seat is installed with fixed tubes arranged at intervals, the side of the fixed tube is provided with an air outlet hole, and an air guide hood is provided at one end of the fixed tube close to the movable baffle, and the opening position of the air guide hood corresponds to the opening position of the perforation.

[0008] Preferably, a movable baffle is movably installed on the inner wall of one side of the perforation for covering the opening of the perforation; a limiting protrusion is provided on the side wall of the perforation, and the limiting protrusion is located at the bottom of the movable baffle for limiting the downward flipping of the movable baffle; the side of the movable baffle is connected to the inner wall of the perforation through a spring, and a dustproof baffle is provided on the side of the movable baffle for covering the spring and preventing dust.

[0009] Preferably, a transition mesh plate with a conical structure is installed inside the preheating chamber to transition the steelmaking raw materials fed into the preheating chamber.

[0010] Preferably, a material shifting mechanism is provided in the preheating chamber for shifting and dispersing the raw materials placed on the transition mesh plate; the material shifting mechanism comprises a second fixed seat installed inside the preheating chamber, a rotating shaft is movably installed on a side of the second fixed seat close to the transition mesh plate, an end of the rotating shaft extending to the top of the transition mesh plate is provided with an inclined material shifting rod, and a material shifting side wing is provided on the side of the material shifting rod close to the transition mesh plate; a driving component is installed on the side of the second fixed seat for driving the rotating shaft to rotate.

[0011] Preferably, an inclined material guide plate is installed on one side of the feeding port opening, a movable cover is movably installed on the side of the feeding port opening away from the material guide plate, a sealing plate is provided on one end of the movable cover close to the material guide plate, and when the movable cover covers the feeding port opening, the side of the sealing plate abuts against the side of the material guide plate.

[0012] Preferably, flexible shielding curtains are provided on both sides of the movable cover; and an exhaust pipe is installed on the movable cover to discharge the smoke flowing to the top of the feeding shell.

[0013] Preferably, a pushing mechanism is provided on the top of the feeding shell for driving and adjusting the flipping of the movable cover.

[0014] Preferably, the pushing mechanism includes a mounting seat installed on the outer wall of the feeding shell, a telescopic component is provided on the side of the mounting seat, and a slider is movably installed on one end of the piston rod of the telescopic component; a slide groove is provided on the side of the movable cover, and the outer diameter of the slider is matched with the inner diameter of the slide groove.

[0015] The beneficial effects of the present invention are: When in use, the steelmaking raw materials are loaded into the storage chamber through the loading port. During the steelmaking process, the high-temperature flue gas generated in the steelmaking furnace enters the bottom of the feeding shell, and the high-temperature flue gas flows into the preheating chamber through the mesh holes of the movable mesh plate. The high-temperature flue gas in the preheating chamber flows into the flue gas transition mechanism through the perforations, and preheats the raw materials in the storage chamber, that is, the high-temperature flue gas flows from bottom to top in the feeding shell, and preheats the raw materials in the preheating chamber and the storage chamber in turn. When feeding is required, the two movable baffles are first driven away from each other by the telescopic component 2. At this time, the raw materials in the storage chamber fall into the preheating chamber. After the raw materials in the preheating chamber are preheated by the high-temperature flue gas, the driving component 1 can be used to drive the rotating rod to rotate, driving the movable mesh plate to flip. At this time, the raw materials on the movable mesh plate slide to the bottom opening of the feeding shell to complete the feeding, and the steelmaking raw materials can be preheated in multiple and effective ways, and the feeding is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a charging device for double-slag steelmaking according to an embodiment of the present invention; Figure 2 A schematic structural diagram of the internal structure of a charging device for double-slag steelmaking according to an embodiment of the present invention from a first perspective; Figure 3 A schematic structural diagram of the internal structure of a charging device for double-slag steelmaking according to an embodiment of the present invention from a second viewing angle; Figure 4 A schematic diagram of the structure of a material-dispensing mechanism of a charging device for double-slag steelmaking according to an embodiment of the present invention; Figure 5 A schematic diagram of a collecting funnel and a movable mesh plate structure of a charging device for double-slag steelmaking proposed in an embodiment of the present invention; Figure 6 A schematic diagram of a flue gas transition mechanism and a movable baffle structure of a charging device for double-slag steelmaking proposed in an embodiment of the present invention; Figure 7 for Figure 6 A magnified view of the local structure at point A.

[0017] In the figure: 1-feeding shell, 2-driving component 1, 3-material guide plate, 4-feeding port, 5-sealing plate, 6-movable cover, 7-exhaust pipe, 8-propelling mechanism, 81-slider, 82-telescopic component 1, 83-mounting seat, 84-slide, 9-flexible shielding curtain, 10-mounting side wing, 11-telescopic component 2, 12-movable baffle, 14-collecting funnel, 15-movable mesh plate, 16-rotating rod, 17-pass Flying screen plate, 18-smoke transition mechanism, 181-fixed seat one, 182-fixed pipe, 183-air guide cover, 184-air outlet, 19-material shifting mechanism, 191-driving component two, 192-fixed seat two, 193-rotating shaft, 194-material shifting rod, 195-material shifting side wing, 20-perforation, 21-movable baffle, 22-dustproof baffle, 23-limiting protrusion, 24-preheating chamber, 25-material storage chamber. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In one embodiment, referring to Figures 1 to 7 A charging device for double slag steelmaking, comprising a charging shell 1, a charging port 4 is provided on the top of the charging shell 1, the bottom opening of the charging shell 1 is communicated with the interior of the steelmaking furnace, through holes are provided on both side walls of the charging shell 1, and a movable baffle 12 arranged obliquely is movably installed inside the through hole, and a telescopic component 11 is provided on the outer side of the charging shell 1 for driving the movable baffle 12 to move in the through hole; a collecting funnel 14 is installed at the bottom of the inside of the charging shell 1, and a storage cavity 25 is formed between the top of the movable baffle 12 and the charging port 4, and a movable baffle 12 ... movable baffle 12 is provided on the outer side of the charging shell 1 A preheating chamber 24 is provided between the movable baffle 12 and the collecting funnel 14; a rotating rod 16 is movably installed at the bottom of the interior of the feeding shell 1, and a movable mesh plate 15 is installed on the side of the rotating rod 16, and the side position of the movable mesh plate 15 corresponds to the bottom opening position of the collecting funnel 14, and a driving component 2 for driving the rotating rod 16 to rotate is installed on the outer side of the feeding shell 1; a through hole 20 is opened on the side of the movable baffle 12, and a smoke transition mechanism 18 is provided in the storage chamber 25 for transitioning the smoke entering the storage chamber 25 through the through hole 20.

[0020] When in use, the steelmaking raw materials are fed into the storage chamber 25 through the feeding port 4. During the steelmaking process, the high-temperature flue gas generated in the steelmaking furnace enters the bottom of the feeding shell 1, and the high-temperature flue gas flows into the preheating chamber 24 through the mesh of the movable mesh plate 15. The high-temperature flue gas in the preheating chamber 24 flows into the flue gas transition mechanism 18 through the perforation 20, and preheats the raw materials in the storage chamber 25. That is, the high-temperature flue gas flows from bottom to top in the feeding shell 1, and heats the raw materials in the preheating chamber 24 and the storage chamber 25 in turn. When preheating is required and feeding is needed, the two movable baffles 12 are first driven away from each other by the telescopic component 11. At this time, the raw materials in the storage chamber 25 fall into the preheating chamber 24. After the raw materials in the preheating chamber 24 are preheated by the high-temperature flue gas, the driving component 2 can be used to drive the rotating rod 16 to rotate, driving the movable mesh plate 15 to flip. At this time, the raw materials on the movable mesh plate 15 slide to the bottom opening of the feeding shell 1 to complete the feeding. The steelmaking raw materials can be preheated multiple times and effectively, and the feeding is convenient.

[0021] As a preferred embodiment of the present invention, the telescopic component 2 11 is an electric telescopic rod, a hydraulic cylinder, etc. In this embodiment, the preferred telescopic component 2 11 is an electric telescopic rod.

[0022] As a preferred embodiment of the present invention, one end of the movable baffle 12 extending to the outside of the feeding shell 1 is provided with a mounting side wing 10, one end of the telescopic component 11 is installed on the outside of the feeding shell 1, and one end of the piston rod of the telescopic component 11 is connected to the side of the mounting side wing 10.

[0023] As a preferred embodiment of the present invention, the flue gas transition mechanism 18 includes a fixed seat 181 installed in the storage chamber 25, and the bottom of the fixed seat 181 is installed with a fixed pipe 182 arranged at intervals. The side of the fixed pipe 182 is provided with an air outlet 184, and the end of the fixed pipe 182 close to the movable baffle 12 is provided with an air guide cover 183, and the opening position of the air guide cover 183 corresponds to the opening position of the perforation 20. The high-temperature flue gas in the preheating chamber 24 flows through the perforation 20 to the air guide cover 183 and the fixed pipe 182, and the high-temperature flue gas in the fixed pipe 182 is dispersed in the storage chamber 25 through the air outlet 184, so that the steelmaking raw materials stored in the storage chamber 25 can be evenly heated, thereby avoiding the situation where the steelmaking raw materials close to the opening of the loading port 4 cannot be effectively heated.

[0024] As a preferred embodiment of the present invention, a movable baffle 21 is movably installed on the inner wall of one side of the perforation 20, which is used to cover the opening of the perforation 20; a limiting protrusion 23 is provided on the side wall of the perforation 20, and the limiting protrusion 23 is located at the bottom of the movable baffle 21, which is used to limit the downward flipping of the movable baffle 21; the side of the movable baffle 21 is connected to the inner wall of the perforation 20 through a spring, and a dustproof baffle 22 is provided on the side of the movable baffle 21, which is used to cover the spring and prevent dust. When the opening of the air guide cover 183 is aligned with the opening of the perforation 20, as the high-temperature flue gas enters the preheating chamber 24, the increased air pressure in the preheating chamber 24 will push the movable baffle 21 into the preheating chamber 24. The plate 21 is pushed upward, and the high-temperature flue gas smoothly enters the interior of the air guide cover 183 through the perforation 20. When it is necessary to move the movable baffle 12 for adding material, the spring pushes the movable baffle 21 to flip downward and reset, and the limiting protrusion 23 supports and limits the side of the movable baffle 21. At this time, the opening of the perforation 20 and the position of the air guide cover 183 are staggered, and the movable baffle 21 blocks the opening of the perforation 20 to prevent the raw material crushed particles in the storage chamber 25 from falling into the perforation 20 and causing the perforation 20 to be blocked, thereby ensuring the smooth flow of the perforation 20. The dustproof baffle 22 blocks the spring to prevent the raw material crushed particles from falling into the spring and causing the spring to be stretched and retracted.

[0025] As a preferred embodiment of the present invention, the movable baffle 21 is made of plastic.

[0026] As a preferred embodiment of the present invention, the dustproof baffle 22 is made of rubber, silicone or other materials. In this embodiment, the dustproof baffle 22 is preferably made of rubber.

[0027] As a preferred embodiment of the present invention, a transition mesh plate 17 with a conical structure is installed inside the preheating chamber 24 for transitioning the steelmaking raw materials fed into the preheating chamber 24 .

[0028] As a preferred embodiment of the present invention, a material-dispensing mechanism 19 is provided in the preheating chamber 24 for dispensing and dispersing the raw materials dropped onto the transition mesh plate 17; the material-dispensing mechanism 19 comprises a second fixed seat 192 installed inside the preheating chamber 24, a rotating shaft 193 is movably installed on a side of the second fixed seat 192 close to the transition mesh plate 17, an end of the rotating shaft 193 extending to the top of the transition mesh plate 17 is provided with an inclined material-dispensing rod 194, and a material-dispensing side wing 195 is provided on a side of the material-dispensing rod 194 close to the transition mesh plate 17; a second driving component 191 is installed on the side of the second fixed seat 192 for driving the rotating shaft 193 to rotate, when the raw materials fall onto the transition mesh plate 17, the second driving component 191 drives the rotating shaft 193 to rotate, drives the material-dispensing rod 194 and the material-dispensing side wing 195 to dispensing and dispersing the raw materials sliding off the top of the transition mesh plate 17, disperses the agglomerated raw materials, and ensures the preheating effect of the raw materials in the preheating chamber 24.

[0029] As a preferred embodiment of the present invention, an inclined material guide plate 3 is installed on one side of the opening of the feeding port 4, a movable cover 6 is movably installed on the side of the opening of the feeding port 4 away from the material guide plate 3, and a sealing plate 5 is provided on one end of the movable cover 6 close to the material guide plate 3. When the movable cover 6 blocks the opening of the feeding port 4, the side of the sealing plate 5 is against the side of the material guide plate 3.

[0030] As a preferred embodiment of the present invention, flexible shielding curtains 9 are provided on both sides of the movable cover 6 to prevent splashing of the opening of the feeding port 4 when loading; an exhaust pipe 7 is installed on the movable cover 6 to discharge the smoke flowing to the top of the feeding shell 1.

[0031] As a preferred embodiment of the present invention, a pushing mechanism 8 is provided on the top of the feeding shell 1 for driving and regulating the flipping of the movable cover 6 .

[0032] As a preferred embodiment of the present invention, the pushing mechanism 8 includes a mounting seat 83 installed on the outer wall of the feeding shell 1, a telescopic component 82 is provided on the side of the mounting seat 83, and a slider 81 is movably installed on one end of the piston rod of the telescopic component 82; a slide groove 84 is provided on the side of the movable cover 6, and the outer diameter of the slider 81 is matched with the inner diameter of the slide groove 84, and the movable cover 6 can be pushed and adjusted to flip by the telescopic component 82 to realize the opening and closing of the movable cover 6.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A charging device for double slag steelmaking, comprising a charging shell (1), wherein a charging port (4) is provided at the top of the charging shell (1), and a bottom opening of the charging shell (1) is connected to the interior of a steelmaking furnace, wherein: Both side walls of the feeding shell (1) are provided with through holes, and an inclined movable baffle (12) is movably installed inside the through hole. A second telescopic component (11) is provided on the outside of the feeding shell (1) for driving the movable baffle (12) to move inside the through hole; A collecting funnel (14) is installed at the bottom of the feeding shell (1), a material storage chamber (25) is located between the top of the movable baffle (12) and the feeding port (4), and a preheating chamber (24) is located between the movable baffle (12) and the collecting funnel (14); A rotating rod (16) is movably mounted at the bottom of the feeding shell (1), a movable mesh plate (15) is mounted on the side of the rotating rod (16), the side position of the movable mesh plate (15) corresponds to the bottom opening position of the collecting funnel (14), and a driving component (2) for driving the rotating rod (16) to rotate is mounted on the outside of the feeding shell (1); A perforation (20) is provided on the side of the movable baffle (12), and a smoke transition mechanism (18) is provided in the material storage chamber (25) for transitioning the smoke entering the material storage chamber (25) through the perforation (20).

2. A charging device for double slag steelmaking according to claim 1, characterized in that: One end of the movable baffle (12) extending to the outside of the charging shell (1) is provided with a mounting wing (10), one end of the second telescopic component (11) is mounted on the outside of the charging shell (1), and one end of the piston rod of the second telescopic component (11) is connected to the side of the mounting wing (10).

3. A charging device for double slag steelmaking according to claim 1, characterized in that: The smoke transition mechanism (18) comprises a fixing seat (181) installed in the material storage chamber (25), a fixing tube (182) arranged at intervals is installed at the bottom of the fixing seat (181), an air outlet hole (184) is opened on the side of the fixing tube (182), and an air guide cover (183) is arranged at one end of the fixing tube (182) close to the movable baffle (12), and the opening position of the air guide cover (183) corresponds to the opening position of the through hole (20).

4. A charging device for double slag steelmaking according to claim 3, characterized in that: A movable blocking piece (21) is movably mounted on the inner wall of one side of the through hole (20) and is used to block the opening of the through hole (20); A limiting protrusion (23) is provided on the side wall of the through hole (20), and the limiting protrusion (23) is located at the bottom of the movable baffle (21) and is used to limit the downward turning of the movable baffle (21); The side of the movable baffle (21) is connected to the inner wall of the perforation (20) via a spring, and a dustproof baffle (22) is provided on the side of the movable baffle (21) for shielding the spring from dust.

5. The double slag steelmaking charging equipment according to claim 1, characterized in that: A transition mesh plate (17) with a conical structure is installed inside the preheating chamber (24) for transitioning the steelmaking raw materials fed into the preheating chamber (24).

6. A charging device for double slag steelmaking according to claim 5, characterized in that: The preheating chamber (24) is provided with a material shifting mechanism (19) for shifting and dispersing the raw materials placed on the transition mesh plate (17); The material shifting mechanism (19) comprises a second fixing seat (192) installed inside the preheating chamber (24); a rotating shaft (193) is movably installed on a side of the second fixing seat (192) close to the transition mesh plate (17); an end of the rotating shaft (193) extending to the top of the transition mesh plate (17) is installed with an inclined material shifting rod (194); and a material shifting side wing (195) is provided on a side of the material shifting rod (194) close to the transition mesh plate (17); A second driving component (191) is installed on the side of the second fixing seat (192) for driving the rotating shaft (193) to rotate.

7. The double slag steelmaking charging equipment according to claim 1, characterized in that: A material guide plate (3) arranged obliquely is installed on one side of the opening of the feed port (4); a movable cover (6) is movably installed on the side of the opening of the feed port (4) away from the material guide plate (3); a sealing plate (5) is arranged on one end of the movable cover (6) close to the material guide plate (3); when the movable cover (6) covers the opening of the feed port (4), the side surface of the sealing plate (5) abuts against the side surface of the material guide plate (3).

8. A charging device for double slag steelmaking according to claim 7, characterized in that: Flexible shielding curtains (9) are provided on both sides of the movable cover (6); An exhaust pipe (7) is installed on the movable cover (6) for exhausting the smoke flowing to the top of the charging shell (1).

9. A charging device for double slag steelmaking according to claim 8, characterized in that: A pushing mechanism (8) is provided on the top of the feeding shell (1) for driving and adjusting the flipping of the movable cover (6).

10. A charging device for double slag steelmaking according to claim 9, characterized in that: The pushing mechanism (8) comprises a mounting seat (83) mounted on the outer wall of the charging shell (1), a telescopic component (82) is arranged on the side of the mounting seat (83), and a sliding block (81) is movably mounted on one end of the piston rod of the telescopic component (82); A slide groove (84) is provided on the side of the movable cover (6), and the outer diameter of the slider (81) is matched with the inner diameter of the slide groove (84).

Images