Steel scrap leveling device for horizontal feeding of electric furnace

Abstract

The utility model discloses an electric furnace horizontal feeding waste steel leveling device which is characterized in that two cross beams are arranged between supporting columns, the cross beams are different in height and connected with a fixing seat, a hydraulic cylinder is hinged to the middle of the top end of the fixing seat, a groove is formed in the position of the hydraulic cylinder, and a piston rod faces the groove of a groove type vibration conveyor. Connecting rods are symmetrically hinged to the left side and the right side of the bottom end of the fixed base, a pressing roller is connected between the connecting rods, the outer side of the pressing roller makes contact with scrap steel in a trough, a movable base is connected between the connecting rods, and the middle of the movable base is hinged to the top end of a piston rod of a hydraulic cylinder. The scrap steel height is lower than a set value and can smoothly pass through, if the scrap steel height exceeds the set value, an operator can adjust the compression roller to move up and down to extrude and flatten the ultrahigh scrap steel, and the device effectively ensures that the scrap steel is flattened and the material level height is consistent, and ensures that the electric furnace is stably, stably and quickly charged.

Description

Technical Field

[0001] This utility model relates to the field of steelmaking production technology, specifically to a scrap steel leveling device for horizontal feeding of electric furnaces. Background Technology

[0002] With the continuous advancement of steelmaking technology in my country and the increasing emphasis on energy conservation and emission reduction in the steel industry, electric arc furnace (EAF) technology is ushering in a favorable development opportunity. The EAF steelmaking production model primarily uses scrap steel or a mixture of scrap steel and molten iron as raw materials. During production, scrap steel enters the furnace via a chain conveyor, horizontal feeding section, horizontal preheating section, and charging trolley. The horizontal feeding equipment is a crucial link in the EAF steelmaking process, its main function being to transport and preheat the scrap steel. The uniformity and flatness of the scrap steel distribution directly affect its rate of entry into the furnace, thus significantly impacting the EAF's production cycle and costs.

[0003] Scrap steel is fed to the horizontal feeding section by an overhead crane electromagnetic chuck and chain conveyor. After passing through the preheating section, it is fed into the furnace for melting by a feeding trolley. The feeding section uses a trough-type vibrating conveyor structure, while the preheating section uses a closed water-cooled flue-type vibrating conveyor. The entire feeding process relies on the action of vibrators on both sides to rapidly advance the scrap steel in the trough. When the scrap steel is unevenly distributed in the trough, or when individual scrap steel pieces exceed the upper edge of the trough, the scrap steel is prone to clump and accumulate in the dynamic sealed smoke curtain support or dynamic seal, leading to jamming.

[0004] In addition, the material trough moves continuously under the vibration of the vibrator, which increases the friction between the scrap steel and the water-cooled material trough and the fume hood. Long-term friction will lead to damage to the water-cooled material trough and the fume hood. Each time a jam occurs, the handling process is very complicated and takes a long time due to the high temperature and confined space inside the fume hood. The handling time is usually between 20 minutes and 3 hours, and even longer in severe cases. This frequent jamming problem not only leads to unplanned shutdowns of the electric furnace, but also directly affects the production rhythm of the electric furnace, which in turn has a significant impact on production efficiency and overall operation. Utility Model Content

[0005] The purpose of this utility model is to provide a scrap steel leveling device for horizontal feeding of electric furnaces, so as to solve the problem that when the scrap steel is unevenly distributed in the trough, or when some scrap steel exceeds the upper edge of the trough, the scrap steel is prone to clump and accumulate in the dynamic sealing smoke curtain support or dynamic seal, resulting in the occurrence of material jamming. Each time material jamming occurs, due to the high temperature and confined space inside the smoke hood, the handling process is very complicated and takes a long time, usually between 20 minutes and 3 hours, and even longer in severe cases.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a scrap steel leveling device for horizontal feeding of an electric furnace, installed on a trough vibrating conveyor, including support columns, crossbeams, fixed seats, hydraulic cylinders, connecting rods, movable seats, and pressure rollers. The left and right sides of the conveyor trough are symmetrically connected to horizontally erected supports, with vertically erected support columns connected to the supports. The left and right support columns are connected by two crossbeams, which are set at different heights. A fixed seat is connected to the crossbeams, and a hydraulic cylinder is hinged to the top center of the fixed seat. The piston rod of the hydraulic cylinder faces the groove of the trough vibrating conveyor. The bottom left and right sides of the fixed seat are symmetrically connected to connecting rods, with pressure rollers connected between the left and right connecting rods. The outer circumference of the pressure rollers contacts the scrap steel in the trough. A movable seat is connected between the connecting rods, with the middle of the movable seat hinged to the top of the piston rod of the hydraulic cylinder.

[0007] Preferably, a diagonally erected reinforcing rib is provided between the bracket and the support column.

[0008] Preferably, the hydraulic cylinder is connected to the hydraulic pump via a pipeline, and a shut-off valve is installed on the pipeline.

[0009] Preferably, the bottom end of the fixing seat is flush with the bottom cut-off end of the bottom crossbeam, and the top end is higher than the top cut-off end of the top crossbeam. The side of the fixing seat that extends beyond the top cut-off end of the top crossbeam has a groove for the hydraulic cylinder to be mounted, and the hydraulic cylinder is mounted in the groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This design reduces the number of times scrap steel gets stuck in the dynamic sealing and preheating sections, lowers the risk of damage to the feed trough and fume hood caused by scrap steel jamming, avoids personnel working in the high-temperature enclosed environment, and ensures the continuity and stability of electric furnace production. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] In the diagram: 1. Support column; 2. Crossbeam; 3. Fixed seat; 4. Hydraulic cylinder; 5. Connecting rod; 6. Movable seat; 7. Pressure roller. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., 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 utility model 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 limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figure 1This utility model provides an embodiment of a horizontal feeding scrap steel leveling device for electric furnaces, installed on a trough vibrating conveyor. It includes support columns 1, crossbeams 2, fixed seats 3, hydraulic cylinders 4, connecting rods 5, movable seats 6, and pressure rollers 7. Symmetrical horizontal supports are connected to the left and right sides of the conveyor trough, increasing the overall stability of the device. Vertical support columns 1 are connected to the supports, primarily supporting the entire device and providing stability. They are connected to other components via crossbeams 2, ensuring the equipment is not easily shifted or shaken. The left and right support columns 1 are connected by two crossbeams 2, which connect the support columns 1 and are arranged at different heights to form... The frame of the device enhances structural stability. The staggered design better distributes the load, avoiding uneven stress and making the structure more robust. Two crossbeams 2 are set at different heights, with fixed seats 3 connected to them. The fixed seats 3 connect the crossbeams 2 to hydraulic cylinders 4, with the upper end connected to the hydraulic cylinders 4 and the lower end connected to connecting rods 5, serving to support the hydraulic cylinders 4 and connecting rods 5. Simultaneously, the hydraulic system allows for precise adjustment of the equipment's working state. A hydraulic cylinder 4 is hinged to the top center of the fixed seat 3, providing mechanical force. Its piston rod controls the height of the pressure roller 7, ensuring the scrap steel height is properly controlled. The hydraulic system precisely controls the height of the pressure roller 7, limiting the height of scrap steel passing through the trough. If the scrap steel falls below this height... If the scrap steel is higher than the height of the pressure roller 7, the on-site workers operate the hydraulic cylinder 4 to move the pressure roller 7 up and down, squeezing and leveling the scrap steel that exceeds the height, so that the scrap steel entering the dynamic sealing and preheating section is flat and the material level is uniform. The piston rod of the hydraulic cylinder 4 is set towards the groove of the trough vibrating conveyor. The bottom of the fixed seat 3 is symmetrical on the left and right sides and is respectively hinged to the connecting rod 5. The connecting rod 5 connects the fixed seat 3 and the pressure roller 7, and drives the movable seat 6 to move through the action of the hydraulic cylinder 4, thereby adjusting the position of the pressure roller 7. Through the connecting rod 5, the movement of the hydraulic cylinder 4 can be accurately transmitted to the pressure roller 7 to ensure that the height of the scrap steel is properly controlled. If the scrap steel is higher than the height of the pressure roller 7, the height of the pressure roller 7 is adjusted by the hydraulic cylinder 4 to squeeze the scrap steel. The scrap steel is pressed and flattened. A pressure roller 7 is connected between the left and right connecting rods 5. The pressure roller 7 contacts the scrap steel and controls its height, ensuring it is evenly compressed and flattened. This effectively prevents uneven scrap steel accumulation and ensures it smoothly enters subsequent processing. It also prevents excessively tall scrap steel from entering and damaging the equipment. The outer circumference of the pressure roller 7 contacts the scrap steel in the trough. A movable seat 6 is connected between the connecting rods 5 and the piston rod of the hydraulic cylinder 4. The hydraulic cylinder 4 drives the adjustment of the vertical position of the pressure roller 7. The movable seat 6 enables the movement conversion between the hydraulic cylinder 4 and the connecting rods 5, allowing the pressure roller 7 to move smoothly up and down. The middle of the movable seat 6 is hinged to the top of the piston rod of the hydraulic cylinder 4. Diagonally erected reinforcing ribs are provided between the bracket and the support column 1.The diagonal reinforcing ribs, positioned between the bracket and the support column 1, are primarily used to enhance the strength and seismic resistance of the bracket. The hydraulic cylinder 4 is connected to the hydraulic pump via pipelines, which are equipped with shut-off valves.

[0019] The bottom end of the fixed base 3 is flush with the bottom cut-off end of the bottom crossbeam 2, and the top end is higher than the top cut-off end of the top crossbeam 2. A groove is provided on the side of the fixed base 3 that extends beyond the top cut-off end of the top crossbeam 2 for the hydraulic cylinder 4 to be mounted. The hydraulic cylinder 4 is mounted in the groove. The groove design allows the hydraulic cylinder 4 to be more compactly embedded in the fixed base 3, reducing the external impact and vibration that the hydraulic cylinder 4 may be subjected to during operation, which helps to extend its service life and improve its working stability.

[0020] In use, hydraulic cylinder 4 is driven by a hydraulic system, and the extension and retraction of the piston rod adjusts the height of pressure roller 7. The stroke of hydraulic cylinder 4 can be precisely adjusted by controlling the hydraulic pump.

[0021] Scrap steel enters the equipment from the feed trough. If the height of the scrap steel is lower than the set height of the pressure roller 7, the scrap steel passes through smoothly. If the height of the scrap steel exceeds the set value, the hydraulic system is operated to move the movable seat 6, which in turn moves the connecting rod 5, and simultaneously moves the pressure roller 7 up and down. This squeezes and flattens the scrap steel that exceeds the set height, achieving a smooth and uniform material level for the scrap steel entering the dynamic sealing and preheating section. This results in smooth, stable, and rapid feeding of the electric furnace.

[0022] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A scrap steel leveling device for horizontal feeding of an electric furnace, installed on a trough vibrating conveyor, characterized in that: The conveyor includes a support column (1), a crossbeam (2), a fixed seat (3), a hydraulic cylinder (4), a connecting rod (5), a movable seat (6), and a pressure roller (7). The left and right sides of the conveyor trough are symmetrically connected to horizontally erected supports. Vertical support columns (1) are connected to the supports. The left and right support columns (1) are connected by two crossbeams (2), and the two crossbeams (2) are set at different heights. Fixed seats (3) are connected to the crossbeams (2). A hydraulic cylinder (4) is hinged to the top center of the fixed seat (3). The piston rod of the hydraulic cylinder (4) is set towards the groove of the trough vibrating conveyor. The left and right sides of the bottom of the fixed seat (3) are symmetrically connected to connecting rods (5). A pressure roller (7) is connected between the left and right connecting rods (5). The outer circumference of the pressure roller (7) is in contact with the scrap steel in the trough. A movable seat (6) is connected between the connecting rods (5). The middle part of the movable seat (6) is hinged to the top of the piston rod of the hydraulic cylinder (4).

2. The electric furnace horizontal feeding scrap leveling device according to claim 1, characterized in that: The bracket and the support column (1) are provided with diagonally erected reinforcing ribs.

3. The electric furnace horizontal feeding scrap leveling device according to claim 1, characterized in that: The hydraulic cylinder (4) is connected to the hydraulic pump through a pipeline, and a shut-off valve is installed on the pipeline.

4. The electric furnace horizontal feeding scrap leveling device according to claim 1, characterized in that: The bottom end of the fixed seat (3) is flush with the bottom end of the bottom beam (2), and the top end is higher than the top end of the top beam (2). The fixed seat (3) has a groove on the side that extends beyond the top end of the top beam (2) for the hydraulic cylinder (4) to be mounted, and the hydraulic cylinder (4) is mounted in the groove.

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