Self-locking structure of slagging-off rake

Abstract

The utility model relates to the technical field of drossing rakes, in particular to a drossing rake self-locking structure which comprises a mounting frame, a positioning groove is formed in the mounting frame, fixing grooves are formed in the left side and the right side of the positioning groove, through holes are formed in the left side and the right side of the interior of the mounting frame, and a connecting rod is arranged on one side of the mounting frame. A slagging-off rake body is arranged on one side of the connecting rod, a positioning block clamped into the positioning groove is arranged on the other side, away from the slagging-off rake body, of the connecting rod, first springs are arranged on the left side and the right side of the positioning block correspondingly, an insertion block is arranged on one side of each first spring, the insertion blocks are inserted into the fixing grooves and penetrate through the fixing grooves, and a supporting rod is arranged in the through hole in a penetrating mode. The supporting rod is sleeved with a second spring. The mounting frame is mounted at the tail end, the rake body is connected through the supporting rod, a structure is arranged in the mounting frame, self-locking connection with the forklift is achieved, and when the height of the front end of the forklift is lowered subsequently, the mounting frame makes contact with the ground, and automatic disassembly is achieved.

Description

Technical Field

[0001] This utility model relates to the field of slag rake technology, and in particular to a self-locking structure for a slag rake. Background Technology

[0002] A smelting furnace is a device that melts metal ingots and some scrap metals and adds necessary alloying components. After slag removal, refining and other operations, it melts them into the desired alloy. When the temperature of the molten aluminum reaches 730-740℃ and is stirred by a permanent magnet for 10-20 minutes, slag removal must be performed before refining. Slag rakes are widely used to clean the slag in the molten aluminum, and are also used to stir and adjust the molten aluminum. They can also be used to push materials during the feeding process.

[0003] The existing patent CN205996192U discloses a slag-removing rake, including a rake plate and a rake handle. The top surface of the rake plate has a bevel, and the rake plate has rake holes in two rows. The overall shape of the two rows of rake holes is circular. The rake holes include a first row of rake holes and a second row of rake holes. The first row of rake holes has four rake holes, and the second row of rake holes has five rake holes. The connection between the rake plate and the rake handle is provided with three reinforcing ribs. This utility model improves the high-temperature performance of the rake plate by using a high-temperature refractory steel plate, thereby improving the corrosion resistance and overall high-temperature strength of the slag-removing rake. The reinforcing ribs increase the bonding strength between the rake handle and the rake plate, effectively reducing the possibility of breakage of the rake plate and rake handle during use. At the same time, the reinforcing ribs can effectively increase the strength of the rake plate, reduce the impact of lateral and longitudinal forces on the rake plate during aluminum molten stirring and slag removal, and effectively improve the phenomenon of rake plate cracking after long-term use.

[0004] Regarding the aforementioned patent, the slag rake needs to be installed at the rear of a forklift for subsequent operations during slag removal. It requires the use of a forklift. However, the existing slag rakes require manual installation and disassembly when installed with a forklift. This process is time-consuming and requires a lot of manpower. Furthermore, the installation does not utilize a self-locking structure, which affects subsequent work efficiency.

[0005] Therefore, given that the existing slag rakes do not have a self-locking structure between them and forklifts, requiring a lot of time and effort for manual installation and disassembly, which reduces subsequent work efficiency, a self-locking structure for the slag rake can be designed. This structure consists of an installation frame at the tail end, with the rake body connected to it via a support rod. The installation frame contains a structure that enables a self-locking connection between the rake and the forklift. When the forklift lowers its front end, the installation frame contacts the ground, allowing for automatic disassembly. Utility Model Content

[0006] To overcome the problem that the existing slag rake and forklift do not have a self-locking mechanism, which requires a lot of time and effort to install and disassemble manually, reducing the efficiency of subsequent work.

[0007] The technical solution of this utility model is as follows: a self-locking structure for a slag rake includes an installation frame, an internal positioning groove, and fixing grooves on both the left and right sides of the positioning groove. Through holes are also provided on both the left and right sides of the installation frame. A connecting rod is provided on one side of the installation frame, and a slag rake body is provided on one side of the connecting rod. A positioning block, which engages with the positioning groove, is provided on the other side of the connecting rod away from the slag rake body. First springs are provided on both the left and right sides of the positioning block, and an insert block is provided on one side of each first spring. The insert block is inserted into and passes through the fixing groove. A support rod passes through the through hole, and a second spring is sleeved on the outside of the support rod. A fixing block is fixedly provided on the lower end face of the support rod, and a pressing block located below the insert block is fixedly provided on the upper end face of the support rod.

[0008] Preferably, the height is lowered by the front of the forklift, and the mounting frame contacts the ground. At the same time, the fixing blocks on the left and right sides below the mounting frame also contact the ground. During the pressing, the pressing block above the fixing block moves upward inside the through hole and contacts the insert block, pressing the insert block to one side and causing the insert block to disengage from the fixing groove, thus completing the disassembly of the insert block. Finally, when the forklift moves forward, it drives the mounting frame to move, causing the positioning block to disengage from the positioning groove inside the mounting frame.

[0009] Preferably, the front end face of the positioning block has a groove, and a movable shaft is provided inside the groove. The connecting rod and the positioning block are connected through the movable shaft.

[0010] As a preferred embodiment, a reinforcing sleeve is provided between the slag rake body and the connecting rod, and reinforcing plates are fixedly installed on both the left and right sides of the reinforcing sleeve.

[0011] Preferably, the surface of the slag rake body has multiple evenly arranged circular holes.

[0012] Preferably, limit grooves are provided on both the left and right surfaces of the positioning block, and the first spring is located in the limit groove.

[0013] Preferably, an arc-shaped groove is provided inside one side of the insert block, and a movable rod located inside the arc-shaped groove is fixedly provided on the upper end face of the extrusion block.

[0014] Preferably, the lower end face of the fixing block is provided with a rubber pad, and the inside of the through hole is provided with a movable groove, through which the support rod and the mounting frame pass.

[0015] The beneficial effects of this utility model are:

[0016] 1. The self-locking structure of the slag rake is achieved by aligning the positioning block at one end of the connecting rod with the positioning groove inside the mounting frame and engaging it. When engaged, the inserts on the left and right sides of the positioning block are squeezed. When the positioning block is fully engaged in the positioning groove, the first spring prevents the release of the insert on one side, which is then ejected. The insert is inserted into the fixing grooves opened on the left and right sides inside the mounting frame and penetrates through to the through hole inside the mounting frame. The penetration of the insert pushes the extrusion block inside the through hole downward, so that it is positioned above the extrusion block.

[0017] 2. This self-locking structure of the slag rake lowers the height by the front of the forklift, so that the mounting frame contacts the ground. At the same time, the fixing blocks on the left and right sides below the mounting frame also contact the ground. During the pressing, the pressing block above the fixing block moves upward inside the through hole and contacts the insert block, pressing the insert block to one side and causing it to disengage from the fixing groove, thus completing the disassembly of the insert block. Finally, when the forklift moves forward, it drives the mounting frame to move, causing the positioning block to disengage from the positioning groove inside the mounting frame. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural schematic of the slag rake and self-locking structure of this utility model.

[0019] Figure 2 The image shown is a side view of the three-dimensional structure of the slag rake and self-locking structure of this utility model.

[0020] Figure 3 The diagram shown is a partial three-dimensional structural schematic of the self-locking structure of this utility model;

[0021] Figure 4 This utility model is shown. Figure 3 A magnified schematic diagram of the three-dimensional structure at point A;

[0022] Figure 5 The diagram shown is a three-dimensional structural schematic of the mounting frame of this utility model.

[0023] Figure 6 The image shown is a three-dimensional bottom view of the mounting frame of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Mounting frame; 2. Through hole; 3. Connecting rod; 4. Positioning block; 5. Slag rake body; 6. Limiting groove; 7. First spring; 8. Insert block; 9. Arc groove; 10. Movable rod; 11. Squeezing block; 12. Second spring; 13. Fixing block; 14. Movable shaft; 15. Support rod; 16. Positioning groove; 17. Through hole groove; 18. Movable groove. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] A smelting furnace is a device that melts metal ingots and some scrap metals, adds necessary alloying components, and then smelts them into the desired alloy through operations such as slag removal and refining. Based on the heating energy source, smelting furnaces can be divided into the following two types: 1. Fuel-heated type (including natural gas, liquefied petroleum gas, coal gas, diesel, heavy oil, coke, etc.), which uses the reaction heat energy generated during fuel combustion to heat the furnace charge; 2. Electric-heated type, which uses a resistance element to generate heat or a coil to generate an alternating magnetic field by passing alternating current through it, and uses induced current to heat the furnace charge in the magnetic field. To ensure the quality of the cast metal alloy ingots and to extend the service life of the smelting furnace as much as possible, various preparatory work for the smelting furnace must be done well in the actual production process, including loading, baking, washing, cleaning, stirring, slag removal, and refining operations.

[0027] Furnace loading: (1) The loading sequence should be reasonable, based on the nature and state of the added charge, and also taking into account the melting rate of the material; (2) First load small or thin scrap, then aluminum ingots and large materials in the middle, and finally load intermediate alloys; (3) Intermediate alloys with low melting points and easy oxidation should be loaded in the lower layer, and intermediate alloys with high melting points should be loaded on top. The high temperature in the upper part of the furnace is conducive to full melting and diffusion, so that the intermediate alloys are evenly distributed and the composition is easy to control; (4) The added charge should be evenly distributed in the molten pool, and the melting rate should be consistent to prevent the metal from overheating due to uneven weighting; (5) The charge should be loaded into the furnace at one time as much as possible. Multiple additions will increase the gas absorption of the melt; (6) When loading the electric furnace, attention should be paid to the safe distance between the highest point of the charge and the furnace top heater to prevent electric shock and damage to the heating facilities. If necessary, the power should be shut off for operation.

[0028] Furnace baking: (1) Confirm that the furnace door, chain, and lifting system are intact; (2) Check and confirm that there is no gas leakage at all welding points, interfaces, valves, combustion air, and vent valves of the natural gas pipeline. If there is a gas leakage, it should be dealt with immediately. After the gas leakage is dealt with, it should be confirmed again that there is no abnormality before the ignition operation can be carried out; (3) Establish and fill in the start-up furnace file tracking record; (4) Strictly follow the curve and furnace baking system established for furnace baking; (5) Pay attention to the temperature changes of the furnace bottom, furnace cavity and side wall and compare them with the heating curve; (6) It is forbidden to heat up the furnace for a short time and then cool down rapidly.

[0029] Furnace cleaning: The purpose of furnace cleaning is to remove the metal and slag remaining in the molten pool from the furnace to prevent contamination of another alloy and to ensure the chemical composition of the new alloy. For newly put into use furnaces (new repair, intermediate repair, and major repair), a large amount of non-metallic impurities are removed by furnace cleaning. For furnaces that have been shut down for a long time, whether to clean them depends on the cleanliness of the furnace and the alloy grade to be produced. When the alloying elements of the previous furnace are the impurities of the next furnace, furnace cleaning must be performed. Furnace cleaning is also required when converting an alloy with high impurities into an alloy with higher purity.

[0030] Furnace cleaning: (1) For furnaces that produce ordinary primary aluminum liquid continuously, cleaning should be carried out once per shift, and a thorough cleaning should be carried out once every 5 to 15 furnace cycles; (2) When changing alloy types, a thorough furnace cleaning should generally be carried out; (3) When cleaning the furnace, in order to effectively remove the residue, a slag removal agent should be evenly sprinkled into the furnace before cleaning, and the temperature should be raised to about 800°C. A flat shovel or mechanical slag removal vehicle should be used to thoroughly clean the slag in the furnace chamber.

[0031] Slag removal and stirring: (1) During the melting process, in order to prevent the loss of melt due to overheating, especially when melting in a gas furnace, the furnace temperature rises rapidly and local overheating is easy to occur. Stirring can reduce the phenomenon of local overheating. (2) After the furnace charge melts, necessary stirring should be carried out to make the temperature of each part of the molten pool rise evenly, which is also conducive to rapid melting. (3) When preparing alloys, stirring must be carried out to ensure the uniform distribution and dissolution of alloy auxiliary materials and reduce the segregation defects of chemical elements. (4) Before sampling and after adjusting the chemical composition, stirring should be carried out. The purpose is to make the alloy composition uniformly distributed and the melt temperature tend to be consistent. Some metal elements with higher density are easy to precipitate. In addition, the addition of metal elements cannot be uniform, causing local or regional unevenness in the melt. Incomplete stirring can easily cause uneven exchange of elements in the melt. (5) Stirring is even more important when making secondary composition adjustments and batching. Before slag removal, powdered solvent should be evenly sprinkled on the melt to effectively separate the slag and metal, which is conducive to slag removal, can reduce the amount of metal carried out, and reduce metal loss. When removing slag, it is necessary to be steady to prevent slag from being drawn into the melt. Slag removal must be thorough, as the presence of floating slag will increase the gas content of the melt and contaminate the metal.

[0032] Refining: The purpose of refining is to remove gases, inclusions and harmful elements from the melt to obtain high-quality aluminum liquid. This process and operation is called refining or purification. Refining methods are generally divided into: (1) in-furnace refining and online out-of-furnace refining; (2) solvent refining and inert gas refining; (3) solvent and inert gas mixed refining method.

[0033] The main function of a slag rake is to reduce the risk of slag adhesion and improve slag removal efficiency. The device consists of a rake body and a rake head. The rake head includes a fixed part and a working part. The fixed part has a rectangular cross-section, while one side of the working part's cross-section is wavy. The fixed part is connected to the rake body via a connecting shaft and has an air inlet and an air outlet connected to a purging duct. The air outlet is connected to the air inlet through an air supply channel within the fixed part, allowing for the timely purging of slag adhering to the rake head surface during slag removal intervals, thus improving slag removal efficiency. Structural features of the slag rake: Fixed part and rake head: The fixed part has a rectangular cross-section, while one side of the working part's cross-section is wavy, connected to the rake body via a connecting shaft; Air inlet and air outlet: An air inlet connected to a purging duct is located on the fixed part, corresponding to the trough of the working part's cross-section. The purge outlet is connected to the inlet via an air delivery channel within the fixed section; the connecting bushing and purge duct: the connecting bushing slides into the connecting shaft and is rotatably mounted on the fixed platform, with the purge duct slidingly connected within the purge duct bushing; the slag rake is primarily suitable for various industrial scenarios requiring efficient slag removal. Its unique design reduces the risk of slag adhesion during slag removal, improving cleaning efficiency and quality.

[0034] In the subsequent cleaning process, it is necessary to remove the slag on the surface of the molten aluminum in the smelting furnace. The cleaning operation is mostly carried out using a slag removal device installed on the forklift arm. The forklift and the slag removal rake are either integrated devices or separate fixed devices. For separate slag removal rakes, the installation and removal of slag are done manually. After installation, the slag removal is carried out manually. The disassembly process is quite complicated and requires a lot of manpower and time. Currently, there is no self-locking installation structure, and the disassembly and assembly process is also quite complicated, inflexible, and impractical.

[0035] Please see Figures 1-6 This utility model provides an embodiment of a self-locking structure for a slag rake, including an installation frame 1. The installation frame 1 has a positioning groove 16 inside, and fixing grooves 17 are provided on both the left and right sides of the positioning groove 16. Through holes 2 are provided on both the left and right sides of the installation frame 1. A connecting rod 3 is provided on one side of the installation frame 1, and a slag rake body 5 is provided on one side of the connecting rod 3. A positioning block 4 is provided on the other side of the connecting rod 3 away from the slag rake body 5, which is inserted into the positioning groove 16. A first spring 7 is provided on both the left and right sides of the positioning block 4. An insert block 8 is provided on one side of the first spring 7. The insert block 8 is inserted into and passes through the fixing groove 17. A support rod 15 is provided through the through hole 2. A second spring 12 is sleeved on the outside of the support rod 15. A fixing block 13 is fixedly provided on the lower end face of the support rod 15, and a pressing block 11 located below the insert block 8 is fixedly provided on the upper end face of the support rod 15.

[0036] Please see Figures 1-2 In this embodiment, the front end face of the positioning block 4 has a groove, and a movable shaft 14 is provided inside the groove. The connecting rod 3 and the positioning block 4 are movably connected through the movable shaft 14. A reinforcing sleeve is provided between the slag rake body 5 and the connecting rod 3. Reinforcing plates are fixedly provided on both the left and right sides of the reinforcing sleeve. The surface of the slag rake body 5 has multiple evenly arranged circular holes. During installation, the positioning block 4 at one end of the connecting rod 3 is aligned with the positioning groove 16 inside the mounting frame 1 at the rear of the forklift and inserted into the mounting frame 1. When inserted, the positioning block 4... The left and right side inserts 8 are squeezed, which compresses the first spring 7 on one side. When the positioning block 4 is fully inserted into the positioning groove 16, the first spring 7 prevents the insert 8 on one side from being ejected, so that the insert 8 is inserted into the fixing grooves 17 opened on the left and right sides inside the mounting frame 1 and passes through so that it is located in the through hole 2 inside the mounting frame 1. Through the insertion of the insert 8, the squeezing block 11 inside the through hole 2 is squeezed downward so that it is located above the squeezing block 11, thus completing the installation of the slag rake body 5 and completing the automatic installation.

[0037] Please see Figures 3-6 In this embodiment, limiting grooves 6 are formed on both the left and right sides of the positioning block 4. The first spring 7 is located in the limiting groove 6. An arc-shaped groove 9 is formed inside one side of the insert block 8. A movable rod 10 located inside the arc-shaped groove 9 is fixedly set on the upper end face of the pressing block 11. A rubber pad is set on the lower end face of the fixing block 13. A movable groove 18 is formed inside the through hole 2. The support rod 15 passes through the mounting frame 1 through the movable groove 18. When disassembling, when the front end of the forklift lowers its height, the mounting frame 1 contacts the ground. At the same time, the fixing blocks 13 on the left and right sides below the mounting frame 1 also contact the ground. When the surface is in contact, during the compression, the support rod 15 above the fixed block 13 drives the compression block 11 above it to move upward inside the through hole 2, so that the compression block 11 contacts the insert block 8, and the insert block 8 is compressed to one side. At the same time, the insert block 8 is disengaged from the fixed groove 17, thus completing the disassembly of the insert block 8. Finally, when the forklift moves forward, it drives the mounting frame 1 to move, so that the positioning block 4 is disengaged from the positioning groove 16 inside the mounting frame 1, thus completing the disassembly of the slag rake body 5. This achieves its self-locking installation structure, saving time and effort.

[0038] During installation, the mounting frame 1 at the rear of the forklift is used as a guide. The positioning block 4 at one end of the connecting rod 3 is aligned with the positioning groove 16 inside the mounting frame 1 and inserted. Upon insertion, the inserts 8 on both sides of the positioning block 4 are compressed, causing the first spring 7 on one side to compress. When the positioning block 4 is fully inserted into the positioning groove 16, the first spring 7 releases the insert 8 on one side, allowing it to insert into the fixing grooves 17 on both sides inside the mounting frame 1, penetrating through the through hole 2 inside the mounting frame 1. The penetrating insertion of the insert 8 forces the pressing block 11 inside the through hole 2 downwards, positioning it above the pressing block 11, thus completing the installation of the slag rake body 5. Automatic installation is completed. During disassembly, when the forklift lowers its height, the mounting frame 1 contacts the ground, and the fixing blocks 13 on the left and right sides below the mounting frame 1 also contact the ground. At this time, during the pressing, the support rod 15 above the fixing block 13 drives the pressing block 11 above it to move upward inside the through hole 2, so that the pressing block 11 contacts the insert block 8, and the insert block 8 is pressed to one side. At the same time, the insert block 8 is disengaged from the fixing groove 17, thus completing the disassembly of the insert block 8. Finally, when the forklift moves forward, it drives the mounting frame 1 to move, so that the positioning block 4 is disengaged from the positioning groove 16 inside the mounting frame 1, thus completing the disassembly of the slag rake body 5. This achieves its self-locking installation structure, saving time and effort.

[0039] Through the above steps, the positioning block 4 at one end of the connecting rod 3 is aligned with the positioning groove 16 inside the mounting frame 1 and inserted. When inserted, the inserts 8 on both sides of the positioning block 4 are squeezed. When the positioning block 4 is fully inserted into the positioning groove 16, the first spring 7 releases the insert 8 on one side to solve the problem that the existing slag rake and forklift do not have a self-locking structure, which requires a lot of time and effort to install and disassemble manually, reducing the efficiency of subsequent work.

Claims

1. A self-locking structure for a slag rake, comprising a mounting frame (1), characterized in that: The mounting frame (1) has a positioning groove (16) inside. The positioning groove (16) has a fixing groove (17) on both the left and right sides. The mounting frame (1) has a through hole (2) on both the left and right sides. The mounting frame (1) has a connecting rod (3) on one side. The slag rake body (5) is provided on one side of the connecting rod (3). The connecting rod (3) and the other side away from the slag rake body (5) has a positioning block (4) that is inserted into the positioning groove (16). The positioning block (4) has a first spring (7) on both the left and right sides. The first spring (7) has an insert block (8) on one side. The insert block (8) is inserted into the fixing groove (17) and passes through. The through hole (2) has a support rod (15) that passes through. The support rod (15) has a second spring (12) sleeved on the outside. The lower end face of the support rod (15) has a fixing block (13) fixedly provided. The upper end face of the support rod (15) has a pressing block (11) located below the insert block (8) fixedly provided.

2. The self-locking structure of a slag rake according to claim 1, characterized in that: The front end face of the positioning block (4) has a groove, and a movable shaft (14) is provided inside the groove. The connecting rod (3) and the positioning block (4) are connected through the movable shaft (14).

3. The self-locking structure of a slag rake according to claim 1, characterized in that: A reinforcing sleeve is provided between the slag rake body (5) and the connecting rod (3), and reinforcing plates are fixedly provided on both the left and right sides of the reinforcing sleeve.

4. The self-locking structure of a slag rake according to claim 1, characterized in that: The surface of the slag rake body (5) has multiple evenly arranged circular holes.

5. The self-locking structure of a slag rake according to claim 1, characterized in that: Limiting grooves (6) are provided on both the left and right sides of the positioning block (4), and the first spring (7) is located in the limiting groove (6).

6. The self-locking structure of a slag rake according to claim 1, characterized in that: An arc-shaped groove (9) is provided inside one side of the insert block (8), and a movable rod (10) located inside the arc-shaped groove (9) is fixedly provided on the upper end face of the extrusion block (11).

7. The self-locking structure of a slag rake according to claim 1, characterized in that: A rubber pad is provided on the lower end face of the fixing block (13), and a movable groove (18) is provided inside the through hole (2). The support rod (15) and the mounting frame (1) pass through the movable groove (18).

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