Smelting furnace hearth facilitating slagging-off
By designing the slag removal cylinder and slag removal box structure in the smelting furnace, using the waist plate and slag removal arc plate to shovel the slag and discharge it through the oblique guide slag trough, the problem of difficulty in synchronous removal of slag surface in the prior art is solved, and efficient slag removal and sampling operations are achieved.
Patent Information
- Application Number
- CN202421689998.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-17
AI Technical Summary
In the slag removal process, it is difficult for existing smelting furnaces to simultaneously remove the scum on the metal melt surface, resulting in the scum being accumulated again, increasing the sampling step and time.
A slurry furnace furnace is designed to facilitate slag removal, adopting a slag removal cylinder and slag removal box structure. By driving the slag removal box downward and driving the rotor to rotate, the slag is continuously shoveled up with the waist plate and slag removal arc plate and discharged through the oblique guide slag trough to achieve separation from the metal melt.
It realizes efficient removal of slag and sampling metal melts inside the furnace body, reducing the sampling steps and time of slag, and improving operating efficiency.
Smart Images
Figure CN222912367U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of slag skimming of smelting furnaces, and particularly relates to a smelting furnace hearth convenient for slag skimming. Background Art
[0002] Electron beam melting refers to a vacuum melting method in which, under high vacuum, the kinetic energy of a high-speed electron beam is converted into heat energy and used as a heat source for metal melting. A smelting furnace refers to equipment that melts metal ingots and some scrap metals, adds necessary alloy components, and melts them into the required alloys through operations such as slag skimming and refining. During the smelting process of metals in the smelting furnace, it is necessary to sample a part of the metal melt and conduct content detection to verify whether the smelting is qualified. Usually, there will be floating slag when metals are melted in the smelting furnace. After the floating slag is cleaned by a slag skimming device, the metal melt is sampled and its content is detected.
[0003] During the sampling process of the metal melt, there is floating slag on the surface and around the metal melt. By the method of opening the furnace door to take out the metal melt and skim the slag, the furnace door needs to be opened for a long time, which is likely to cause heat loss in the smelting furnace; while in the method of skimming slag inside the hearth, usually only the floating slag around can be skimmed, and it is difficult to synchronously skim the floating slag on the surface of the metal melt. On the one hand, the skimmed floating slag may re-aggregate, and on the other hand, the surface floating slag needs to be skimmed after taking out, which increases the steps of sampling and skimming slag and also increases the overall sampling time.
[0004] Therefore, it is very necessary to invent a smelting furnace hearth convenient for slag skimming to solve the above problems. Content of the Utility Model
[0005] To solve the deficiencies of the prior art, the purpose of the utility model is to provide a smelting furnace hearth convenient for slag skimming, which solves the problems in the prior art that in the method of skimming slag inside the hearth, usually only the floating slag around can be skimmed, and it is difficult to synchronously skim the floating slag on the surface of the metal melt. On the one hand, the skimmed floating slag may re-aggregate, and on the other hand, the surface floating slag needs to be skimmed after taking out, which increases the steps of sampling and skimming slag and also increases the overall sampling time.
[0006] To achieve the above objectives, the utility model adopts the following technical solutions:
[0007] A melting furnace hearth facilitating slag skimming, comprising a hearth body and a slag skimming barrel. A lower sealing assembly is provided at the top end of the hearth body, and an upper sealing assembly is provided at the bottom end of the slag skimming barrel. Both the lower sealing assembly and the upper sealing assembly can be opened or closed. A slag skimming box with open ends at both the top and bottom is longitudinally slidably arranged in the slag skimming barrel. Two rotating drums with opposite rotation directions are respectively rotatably arranged at symmetric positions in the slag skimming box, and one of the rotating drums on the left rotates counterclockwise. A plurality of waist plates are connected to the circumferential side wall of the rotating drum, and slag skimming arc plates capable of continuously skimming slag are connected to the ends of the waist plates. A plurality of inclined guiding slag grooves are respectively opened in the left and right side walls of the slag skimming barrel at the part below the rotating drum. Bottom slag plates are respectively rotatably arranged on both sides of the bottom end of the slag skimming box;
[0008] In the initial state, the two bottom slag plates are in an inwardly inclined position. When the slag skimming box moves downward until it abuts against the bottom surface of the hearth body, the bottom slag plates rotate towards the direction close to the slag skimming box until the bottom of the slag skimming box is closed and locked.
[0009] As a preferred scheme of the present utility model, bottom connecting plates are respectively provided at positions on both side walls of the bottom slag plate close to the middle of the slag skimming box. An arc-shaped guiding rod is connected to the top end of each bottom connecting plate, a top magnetic block is connected to the top end of the arc-shaped guiding rod, fixed magnetic sheets are installed on the left and right side walls of the slag skimming box, and guiding limiting seats are installed on each side wall of the slag skimming box close to the arc-shaped guiding rod;
[0010] When the bottom slag plate is in the initial state, the top magnetic block abuts against the guiding limiting seat; when the bottom slag plate is in the position of closing the bottom of the slag skimming box, the top magnetic block is in magnetic contact with the fixed magnetic sheet.
[0011] As a preferred scheme of the present utility model, rotating shafts are respectively connected to both ends of the rotating drum. Bearings are respectively embedded at positions on both side walls of the slag skimming box adapted to each rotating shaft. The rotating shaft rotatably passes through the bearing and extends outside the slag skimming box. An installation plate is provided on one side wall outside the slag skimming box. A motor is detachably installed at the top end of the installation plate through an installation seat. The motor is rotationally connected to one of the rotating shafts. The number of waist plates on the circumferential side walls of the two rotating drums is the same and the intervals are the same;
[0012] When a waist plate on one of the rotating drums is in a horizontal state, a waist plate on the other rotating drum is also in a horizontal state, and the slag skimming arc plates at the ends of the two waist plates are in contact.
[0013] As a preferred scheme of the present utility model, top side sealing plates capable of closing both side edges of the slag skimming box are respectively installed at symmetric positions at the top end of the slag skimming box. Side collecting frames for collecting floating slag are respectively connected to positions on the left and right side walls of the slag skimming box adapted to the inclined guiding slag grooves.
[0014] As a preferred solution of the present utility model, mounting blocks are detachably installed on the bottom sides of the two side walls of the slag scraping box. Rotating columns are provided at positions on the two side walls of the bottom slag plate close to the mounting blocks, and the rotating columns rotatably penetrate through the mounting blocks.
[0015] As a preferred solution of the present utility model, sealing plates are horizontally slidably arranged in both the lower sealing assembly and the upper sealing assembly, and a lifting frame is installed on the side surface of the sealing plate.
[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:
[0017] In the present utility model, when the furnace body is performing metal melting, both the lower sealing assembly and the upper sealing assembly are in a sealed state. When it is necessary to sample the metal melt, the lower sealing assembly and the upper sealing assembly are opened, so that the furnace body is longitudinally communicated with the slag scraping cylinder. At this time, by driving the slag scraping box to move downward, the slag scraping box originally in the slag scraping cylinder continuously extends into the furnace body. During the continuous downward movement, the bottom slag plate originally in an inwardly inclined state first abuts against the bottom surface of the furnace body, and then continuously rotates towards the direction close to the bottom end of the slag scraping box as the slag scraping box further moves downward until the bottom of the slag scraping box is closed. During the rotation process, part of the metal melt is shoveled into the slag scraping box by the two bottom slag plates. Subsequently, by driving the two rotating cylinders to rotate, the waist plate and the slag scraping arc plate continuously rotate, that is, the metal melt and the floating slag are continuously shoveled up and rotated from the middle of the slag scraping box to the side. As the rotating cylinder continuously rotates, the floating slag continuously discharges from the slag scraping box through the inclined guide slag groove, while the metal melt remains in the slag scraping box and is continuously stirred by the waist plate and the slag scraping arc plate. As the rotating cylinder drives the waist plate and the slag scraping arc plate to continuously rotate, the floating slag continuously discharges from the slag scraping box through the inclined guide slag groove, and the metal melt gradually removes the surface floating slag during the continuous stirring process. Finally, the floating slag shoveled up by the bottom slag plate at one time is discharged from the inclined guide slag groove, and the metal melt is shoveled up by the waist plate and the slag scraping arc plate in contact on both sides, and then the metal melt is taken out, so that slag scraping and sampling can be completed synchronously. It can be shoveled up by the continuous rotation of the waist plate and the slag scraping arc plate, and the surrounding floating slag and the surface floating slag are discharged from the inclined guide slag groove to realize separation from the metal melt, that is, it is convenient to scrape slag inside the furnace body, and the waist plate and the slag scraping arc plate simultaneously undertake the function of shoveling up the metal melt after separating from the floating slag for taking out, that is, slag scraping and sampling are completed by the same structure, avoiding the subsequent removal of the surface floating slag, reducing the slag scraping and sampling steps, and shortening the slag scraping and sampling time. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the overall structural schematic diagram of the present utility model;
[0019] Figure 2 is the overall structural schematic diagram of the present utility model after partial sectioning;
[0020] Figure 3 This is a schematic diagram of the overall structure of the slag scraping box in the initial state of the bottom slag scraping plate of the present utility model;
[0021] Figure 4 This is a schematic diagram of the overall structure of the slag scraping box after the bottom slag scraping plate of the present utility model closes the bottom of the slag scraping box;
[0022] Figure 5 For the present utility model Figure 3 Schematic diagram of the plan view structure;
[0023] Figure 6 For the present utility model Figure 3 Schematic diagram of the front view structure of the plane;
[0024] Figure 7 For the present utility model Figure 5 Schematic diagram of the sectional structure at A - A in the present utility model;
[0025] Figure 8 For the present utility model Figure 6 Schematic diagram of the sectional structure at B - B in the present utility model.
[0026] Explanation of reference numerals:
[0027] 1. Furnace body; 2. Lower sealing assembly; 3. Upper sealing assembly; 4. Sealing plate; 5. Slag scraping cylinder; 6. Slag scraping box; 7. Side collection frame; 8. Top side sealing plate; 9. Inclined guide slag trough; 10. Rotary drum; 11. Waist plate; 12. Slag scraping arc plate; 13. Bearing; 14. Bottom slag scraping plate; 15. Installation block; 16. Rotary column; 17. Bottom connecting plate; 18. Arc-shaped guide rod; 19. Top magnetic block; 20. Fixed magnetic sheet; 21. Lifting frame; 22. Rotating shaft; 23. Motor; 24. Installation plate; 25. Installation seat; 26. Guide and limit seat. Detailed implementation manners
[0028] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.
[0029] The present utility model provides as Figures 1-8A smelting furnace hearth facilitating slag skimming, as shown, includes a hearth body 1 and a slag skimming barrel 5. A lower sealing assembly 2 is provided at the top of the hearth body 1, and an upper sealing assembly 3 is provided at the bottom of the slag skimming barrel 5. Both the lower sealing assembly 2 and the upper sealing assembly 3 can be opened or closed. A slag skimming box 6 with open ends at both the top and the bottom is longitudinally slidably arranged in the slag skimming barrel 5. Two rotating drums 10 with opposite rotation directions are rotatably arranged at symmetric positions in the slag skimming box 6, and one of the rotating drums 10 on the left rotates counterclockwise. A plurality of waist plates 11 are connected to the circumferential side wall of the rotating drum 10, and a slag skimming arc plate 12 capable of continuous slag skimming is connected to the end of the waist plate 11. A plurality of inclined guide slag grooves 9 are provided on both the left and right side walls of the slag skimming barrel 5 at the part below the rotating drum 10. Bottom slag plates 14 are rotatably arranged on both sides of the bottom of the slag skimming box 6. When the hearth body 1 is smelting metal, both the lower sealing assembly 2 and the upper sealing assembly 3 are in a sealed state. When it is necessary to sample the molten metal, the lower sealing assembly 2 and the upper sealing assembly 3 are opened, so that the hearth body 1 is longitudinally communicated with the slag skimming barrel 5, facilitating the slag skimming box 6 to extend into the hearth body 1 for sampling. The driving structure for the longitudinal movement of the slag skimming box 6 is not shown in the figure and can be realized by using mature existing technologies;
[0030] In the initial state, the two bottom slag plates 14 are in an inwardly inclined position. When the slag skimming box 6 moves downward until it abuts against the bottom surface of the hearth body 1, the bottom slag plates 14 rotate towards the direction close to the slag skimming box 6 until the bottom of the slag skimming box 6 is closed and locked.
[0031] Bottom connecting plates 17 are provided at positions on both side walls of the bottom slag plate 14 close to the middle of the slag skimming box 6. An arc-shaped guide rod 18 is connected to the top of each bottom connecting plate 17, and a top magnetic block 19 is connected to the top of the arc-shaped guide rod 18. Fixed magnetic sheets 20 are installed on both the left and right side walls of the slag skimming box 6, and a guide and limit seat 26 is installed on each side wall of the slag skimming box 6 close to the arc-shaped guide rod 18;
[0032] When the bottom slag plate 14 is in the initial state, the top magnetic block 19 abuts against the guide and limit seat 26; when the bottom slag plate 14 is in the position of closing the bottom of the slag skimming box 6, the top magnetic block 19 is in magnetic contact with the fixed magnetic sheet 20. When the top magnetic block 19 is in magnetic contact with the fixed magnetic sheet 20, the bottom slag plate 14 just closes the bottom of the slag skimming box 6. At this time, the bottom of the slag skimming box 6 is completely closed by the two bottom slag plates 14.
[0033] Both ends of the rotary drum 10 are connected with a rotating shaft 22. At the positions of each rotating shaft 22, bearings 13 are embedded in the two side walls of the slag scraping box 6. The rotating shaft 22 rotates through the bearing 13 and extends outside the slag scraping box 6. On one side wall outside the slag scraping box 6, there is a mounting plate 24. At the top of the mounting plate 24, a motor 23 is detachably mounted through a mounting seat 25. The motor 23 is rotationally connected with one of the rotating shafts 22. The number of waist plates 11 on the circumferential side walls of the two rotary drums 10 is the same and the intervals are the same. When the motor 23 rotates, it drives the rotating shaft 22 to rotate, and then drives the rotary drum 10 inside the slag scraping box 6 to rotate, that is, drives the waist plates 11 and the slag scraping arc plates 12 to rotate. Since the left rotary drum 10 rotates counterclockwise and the right rotary drum 10 rotates clockwise, the waist plates 11 and the slag scraping arc plates 12 can continuously shovel up the floating slag and the molten metal above the bottom scraping plate 14 and rotate from the middle of the slag scraping box 6 to the left and right sides;
[0034] When a waist plate 11 on one of the rotary drums 10 is in a horizontal state, a waist plate 11 on the other rotary drum 10 is also in a horizontal state, and the slag scraping arc plates 12 at the ends of the two waist plates 11 are in contact.
[0035] At the symmetrical positions at the top of the slag scraping box 6, top side sealing plates 8 for closing the two sides of the slag scraping box 6 are installed. At the positions of the left and right side walls of the slag scraping box 6 that are adapted to the inclined guide slag grooves 9, side collecting frames 7 for collecting floating slag are connected. The floating slag discharged from the slag scraping box 6 through the inclined guide slag grooves 9 is centrally collected in the side collecting frames 7.
[0036] At the bottom side edges of the two side walls of the slag scraping box 6, mounting blocks 15 are detachably installed. At the positions of the two side walls of the bottom scraping plate 14 close to the mounting blocks 15, rotating columns 16 are provided. The rotating columns 16 rotate through the mounting blocks 15.
[0037] Sealing plates 4 are horizontally slidably arranged in both the lower sealing assembly 2 and the upper sealing assembly 3. A lifting frame 21 is installed on the side surface of the sealing plate 4. Through the lifting frame 21, the sealing plate 4 can be conveniently pulled out from the lower sealing assembly 2 or the upper sealing assembly 3 to both sides, so as to open the top of the furnace body 1 or the bottom of the slag scraping cylinder 5.
[0038] In the present utility model, when the furnace body 1 is performing metal smelting, both the lower sealing assembly 2 and the upper sealing assembly 3 are in a sealed state. When it is necessary to sample the molten metal, the lower sealing assembly 2 and the upper sealing assembly 3 are opened, so that the furnace body 1 is longitudinally communicated with the slag skimming barrel 5. At this time, by driving the slag skimming box 6 to move downward, the slag skimming box 6 originally in the slag skimming barrel 5 continuously extends into the furnace body 1. During the continuous downward movement, the bottom slag skimming plate 14 originally in an inwardly inclined state first abuts against the bottom surface of the furnace body 1, and then rotates continuously towards the direction close to the bottom end of the slag skimming box 6 as the slag skimming box 6 further moves downward until the bottom of the slag skimming box 6 is closed. During the rotation process, part of the molten metal is shoveled into the slag skimming box 6 by the two bottom slag skimming plates 14. Subsequently, by driving the two rotating cylinders 10 to rotate, the waist plate 11 and the slag skimming arc plate 12 continuously rotate, that is, the molten metal and the floating slag are continuously shoveled up and rotated from the middle of the slag skimming box 6 to the side. As the rotating cylinder 10 continuously rotates, the floating slag continuously discharges from the slag skimming box 6 through the inclined guide slag groove 9, while the molten metal remains in the slag skimming box 6 and is continuously stirred by the waist plate 11 and the slag skimming arc plate 12. As the rotating cylinder 10 drives the waist plate 11 and the slag skimming arc plate 12 to continuously rotate, the floating slag continuously discharges from the slag skimming box 6 through the inclined guide slag groove 9, and the molten metal gradually removes the floating slag on the surface during the continuous stirring process. Finally, the floating slag shoveled up by the bottom slag skimming plate 14 at one time is discharged from the inclined guide slag groove 9, and the molten metal is shoveled up by the waist plate 11 and the slag skimming arc plate 12 in contact on both sides. Then, by taking out the molten metal, slag skimming and sampling can be completed synchronously. The floating slag around and on the surface can be discharged from the inclined guide slag groove 9 by continuously rotating and shoveling by the waist plate 11 and the slag skimming arc plate 12 to realize separation from the molten metal, that is, it is convenient to skim slag inside the furnace body 1. At the same time, the waist plate 11 and the slag skimming arc plate 12 undertake the function of shoveling up the molten metal after separating from the floating slag for taking out, that is, slag skimming and sampling are completed by the same structure, avoiding the subsequent removal of the floating slag on the surface, reducing the slag skimming and sampling steps, and shortening the slag skimming and sampling time.
[0039] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present utility model.
Claims
1. A smelting furnace hearth that is convenient for slagging, characterized in that: It comprises a furnace body (1) and a slag removal barrel (5), wherein a lower sealing assembly (2) is provided at the top of the furnace body (1), and an upper sealing assembly (3) is provided at the bottom of the slag removal barrel (5), and both the lower sealing assembly (2) and the upper sealing assembly (3) can be opened or closed, and a slag removal box (6) with open ends at the top and bottom is longitudinally slidably arranged in the slag removal barrel (5), and two rotating drums (10) with opposite rotation directions are rotatably arranged at symmetrical positions in the slag removal box (6), and the rotating drum (10) located on the left rotates counterclockwise, and a plurality of waist plates (11) are connected to the peripheral side walls of the rotating drum (10), and the ends of the waist plates (11) are connected to slag removal arc plates (12) capable of continuous slag removal, and a plurality of oblique slag guide grooves (9) are provided at the parts of the left and right side walls of the slag removal barrel (5) located below the rotating drum (10), and bottom slag removal plates (14) are rotatably arranged on both sides of the bottom end of the slag removal box (6); In an initial state, the two bottom shovel plates (14) are in an inwardly inclined position, and when the slag box (6) moves downward until it abuts against the bottom surface of the furnace body (1), the bottom shovel plates (14) rotate in a direction close to the slag box (6) until the bottom of the slag box (6) is closed and locked.
2. A smelting furnace hearth for easy slagging according to claim 1, characterized in that: Bottom connecting plates (17) are provided at positions near the middle of the slag box (6) on both side walls of the bottom scraper plate (14); the top of each bottom connecting plate (17) is connected to an arc-shaped guide rod (18); the top of the arc-shaped guide rod (18) is connected to a top magnetic block (19); fixed magnetic plates (20) are installed on the left and right side walls of the slag box (6); and each side wall of the slag box (6) near the arc-shaped guide rod (18) is installed with a guide limit seat (26); When the bottom scraper plate (14) is in an initial state, the top magnetic block (19) abuts against the guide limit seat (26); when the bottom scraper plate (14) is at the bottom position of the closed scraper box (6), the top magnetic block (19) is in magnetic contact with the fixed magnetic sheet (20).
3. The smelting furnace hearth for easy slagging according to claim 1, characterized in that: Both ends of the rotating drum (10) are connected to a rotating shaft (22), and bearings (13) are embedded at the positions of each rotating shaft (22) on the two side walls of the slag box (6), and the rotating shaft (22) is rotatably inserted into the bearing (13) and extends to the outside of the slag box (6). A mounting plate (24) is provided on one side wall outside the slag box (6), and a motor (23) is detachably mounted on the top of the mounting plate (24) through a mounting seat (25), and the motor (23) is rotatably connected to one of the rotating shafts (22). The waist plates (11) on the side walls of the two rotating drums (10) are the same in number and spacing; When a waist plate (11) on one of the rotating drums (10) is in a horizontal state, a waist plate (11) on the other rotating drum (10) is also in a horizontal state, and the scraping arc plates (12) at the ends of the two waist plates (11) are in contact with each other.
4. The smelting furnace hearth for easy slagging according to claim 1, characterized in that: Top side sealing plates (8) capable of closing both sides of the slag skimmer box (6) are installed at symmetrical positions on the top of the slag skimmer box (6), and side collecting frames (7) for collecting slag are connected to positions on the left and right side walls of the slag skimmer box (6) adapted to the inclined slag guide grooves (9).
5. The furnace of a smelting furnace convenient for slagging according to claim 1, characterized in that: The bottom sides of both side walls of the slag box (6) are detachably provided with mounting blocks (15), and both side walls of the bottom slag plate (14) are provided with rotating columns (16) near the mounting blocks (15), and the rotating columns (16) are rotatably inserted into the mounting blocks (15).
6. The furnace of a smelting furnace convenient for slagging according to claim 1, characterized in that: A sealing plate (4) is laterally slidably disposed inside the lower sealing assembly (2) and the upper sealing assembly (3), and a lifting frame (21) is mounted on the side of the sealing plate (4).