Electric arc furnace tapping hole cleaning device

Abstract

The utility model relates to an electric arc furnace tapping hole cleaning device, and belongs to the field of metallurgical industry. The device comprises a lifting mechanism, a guide mechanism, a cleaning mechanism and a rotating mechanism, the guide mechanism is fixedly installed on the lifting mechanism, the cleaning mechanism is installed on the lifting mechanism in a sliding mode, the cleaning mechanism is matched with the guide mechanism, the lifting mechanism is connected with the rotating mechanism, and the rotating mechanism is connected with the guide mechanism. The lifting mechanism comprises a main body frame, a piston oil cylinder, an oil cylinder hinge seat and a pin shaft, the oil cylinder hinge seat is installed on the main body frame, a cylinder barrel of the piston oil cylinder is installed on the oil cylinder hinge seat through the pin shaft, and a piston of the piston oil cylinder is connected with the cleaning mechanism.

Description

Technical Field

[0001] The utility model relates to a tapping hole cleaning device for an electric arc furnace, belonging to the field of the metallurgical industry. Background Art

[0002] The maintenance of the furnace body is an inevitable problem for smelting equipment. Usually, the process of furnace body maintenance is one of the main occurrence points of safety accidents. After the tapping of the electric furnace is completed, due to the fracture of the electrode falling into the molten steel, the electrode will fall into the tapping hole during tapping, resulting in the blockage of the tapping hole. Generally, the equipment maintenance unit cannot clean the electrode stuck at the tapping hole by blowing oxygen, and can only manually clean it bit by bit with a pneumatic pick. This process has low efficiency and certain potential safety hazards. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies existing in the prior art. In order to reduce the accident rate during equipment maintenance and improve the equipment maintenance efficiency, a tapping hole cleaning device for an electric arc furnace with a compact structure, high reliability, practical economy is provided, which can make up for the deficiencies of existing equipment.

[0004] The technical solution adopted by the utility model to solve the above problems is: the tapping hole cleaning device for an electric arc furnace is characterized in that it includes a lifting mechanism, a guiding mechanism, a cleaning mechanism and a rotating mechanism. The guiding mechanism is fixedly installed on the lifting mechanism. The cleaning mechanism is slidably installed on the lifting mechanism. The cleaning mechanism cooperates with the guiding mechanism. The lifting mechanism is connected with the rotating mechanism.

[0005] Further, the lifting mechanism includes a main body frame, a piston oil cylinder, an oil cylinder hinge seat and a pin shaft. The oil cylinder hinge seat is installed on the main body frame. The cylinder barrel of the piston oil cylinder is installed on the oil cylinder hinge seat through the pin shaft. The piston of the piston oil cylinder is connected with the cleaning mechanism.

[0006] Further, the guiding mechanism includes a guiding roller, a guiding roller mounting seat, an adjusting spring, an adjusting setscrew and a guide wheel mounting slider. The guiding roller is rotatably installed on the guide wheel mounting slider. The guide wheel mounting slider is slidably installed on the guiding roller mounting seat. The adjusting setscrew penetrates through the guiding roller mounting seat and is threadedly connected with the guide wheel mounting slider. The adjusting spring is sleeved outside the adjusting setscrew, and the two ends of the adjusting spring are respectively abutted against the guiding roller mounting seat and the guide wheel mounting slider. The guiding roller mounting seat is fixedly installed on the lifting mechanism. The guiding roller cooperates with the cleaning mechanism.

[0007] Further, the cleaning mechanism includes a thimble, a bracket and a guide rail. The thimble is connected with one end of the bracket. The other end of the bracket is connected with the guide rail. The guide rail is connected with the lifting mechanism and cooperates with the guiding mechanism.

[0008] Further, the rotation mechanism includes a cylinder mounting seat, a cylinder, a crank, and a slewing bearing. The cylinder barrel of the cylinder is mounted on the cylinder mounting seat. The piston rod of the cylinder is connected to the crank. The crank is connected to the lifting mechanism. The lifting mechanism is mounted on the inner ring of the slewing bearing. The outer ring of the slewing bearing and the cylinder mounting seat are both mounted on the platform.

[0009] Compared with the prior art, the present utility model has the following advantages: The steel tapping hole cleaning device for the electric arc furnace realizes the function of automatically cleaning the steel tapping hole, avoids manual entry into the furnace body for cleaning, solves the safety hazard problem, and improves the work efficiency at the same time. The steel tapping hole cleaning device for the electric arc furnace is mounted on the platform. Its working process is as follows: When the steel tapping hole needs to be cleaned, the piston oil cylinder drives the guide rail, the bracket, and the ejector pin to descend; then the cylinder drives the main body frame to rotate the ejector pin to the working position, that is, to align with the steel tapping hole of the furnace body; the steel tapping hole is cleaned by the up and down telescoping of the piston oil cylinder; when the cleaning is completed, the piston oil cylinder lowers the ejector pin to the lowest position, and then the cylinder pulls the main body frame back to the standby position, and finally the piston oil cylinder pulls the ejector pin up to the highest position; thus, a working cycle is completed. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the use state of the steel tapping hole cleaning device for the electric arc furnace according to an embodiment of the present utility model.

[0011] Figure 2 is a front view structural diagram of the lifting mechanism according to an embodiment of the present utility model.

[0012] Figure 3 is a three-dimensional structural diagram of the guiding mechanism according to an embodiment of the present utility model.

[0013] Figure 4 is a three-dimensional structural diagram of the guiding mechanism according to an embodiment of the present utility model.

[0014] Figure 5 is a front view structural diagram of the cleaning mechanism according to an embodiment of the present utility model.

[0015] Figure 6 is a top view structural diagram of the rotation mechanism according to an embodiment of the present utility model.

[0016] Figure 7 is a sectional structural diagram of the steel tapping hole cleaning device for the electric arc furnace according to an embodiment of the present utility model.

[0017] Figure 8 is a three-dimensional structural diagram of the steel tapping hole cleaning device for the electric arc furnace according to an embodiment of the present utility model.

[0018] In the figure: lifting mechanism 1, guiding mechanism 2, cleaning mechanism 3, rotation mechanism 4, platform 5, furnace body 6, steel tapping hole 7

[0019] Main frame 1.1, piston oil cylinder 1.2, oil cylinder hinge seat 1.3, pin shaft 1.4,

[0020] Guide roller 2.1, guide roller mounting seat 2.2, adjustment spring 2.3, adjustment setscrew 2.4, guide wheel mounting slider 2.5,

[0021] Ejector pin 3.1, bracket 3.2, guide rail 3.3,

[0022] Cylinder mounting seat 4.1, cylinder 4.2, crank 4.3, slewing bearing 4.4. Specific implementation mode

[0023] The present utility model will be further described in detail below in conjunction with the drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0024] Embodiment

[0025] See Figures 1 to 8 As shown, it should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present utility model can be implemented. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the efficacy that the present utility model can produce and the purpose that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope under which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope within which the present utility model can be implemented.

[0026] The tapping hole cleaning device of the electric arc furnace in this embodiment includes a lifting mechanism 1, a guiding mechanism 2, a cleaning mechanism 3, and a rotating mechanism 4. The guiding mechanism 2 is fixedly installed on the lifting mechanism 1, the cleaning mechanism 3 is slidably installed on the lifting mechanism 1, the cleaning mechanism 3 cooperates with the guiding mechanism 2, and the lifting mechanism 1 is connected to the rotating mechanism 4.

[0027] The lifting mechanism 1 in this embodiment includes a main frame 1.1, a piston oil cylinder 1.2, an oil cylinder hinge seat 1.3, and a pin shaft 1.4. The oil cylinder hinge seat 1.3 is installed on the main frame 1.1, the cylinder barrel of the piston oil cylinder 1.2 is installed on the oil cylinder hinge seat 1.3 through the pin shaft 1.4, and the piston of the piston oil cylinder 1.2 is connected to the cleaning mechanism 3.

[0028] The main body frame 1.1 is mainly welded by a circular tube with a diameter of φ380 and a thickness of 10 and a steel plate. The piston cylinder 1.2 is fixed to the cylinder hinge seat 1.3 of the main body frame 1.1 by means of hinge through the pin shafts 1.4 on both sides. This fixing method makes the piston cylinder 1.2 more flexible; it prevents the cylinder from being stuck due to slight deformation of the equipment caused by harsh environment during use; at the same time, the whole piston cylinder 1.2 is inside the main body frame 1.1, effectively avoiding the damage of the piston cylinder 1.2 caused by the splashing of molten steel during smelting.

[0029] The guiding mechanism 2 in this embodiment includes guiding rollers 2.1, guiding roller mounting seats 2.2, adjusting springs 2.3, adjusting set screws 2.4 and guide wheel mounting sliders 2.5. The guiding rollers 2.1 are rotatably mounted on the guide wheel mounting sliders 2.5, the guide wheel mounting sliders 2.5 are slidably mounted on the guiding roller mounting seats 2.2, the adjusting set screws 2.4 penetrate through the guiding roller mounting seats 2.2, and the adjusting set screws 2.4 are threadedly connected to the guide wheel mounting sliders 2.5. The adjusting springs 2.3 are sleeved outside the adjusting set screws 2.4, and both ends of the adjusting springs 2.3 are respectively abutted against the guiding roller mounting seats 2.2 and the guide wheel mounting sliders 2.5. The guiding roller mounting seats 2.2 are fixedly mounted on the lifting mechanism 1, and the guiding rollers 2.1 cooperate with the cleaning mechanism 3.

[0030] The guiding rollers 2.1 are installed on the guide wheel mounting sliders 2.5 through bolts, and the guide wheel mounting sliders 2.5 can slide in one degree of freedom on the guiding roller mounting seats 2.2; the adjusting springs 2.3 are between the guiding roller mounting seats 2.2 and the guide wheel mounting sliders 2.5. The adjusting set screws 2.4 are screwed into the guiding roller mounting seats 2.2 and pass through the adjusting springs 2.3 and are screwed on the guide wheel mounting sliders 2.5. The adjusting springs 2.3 in this mechanism can compensate for the unevenness during the up and down movement of the guide rail 3.3, be more adaptable to the harsh on-site environment, and effectively reduce the jamming rate of the guiding rollers 2.1; at the same time, the adjusting set screws 2.4 can adjust the elastic range of the adjusting springs 2.3 of the guiding rollers 2.1, effectively avoiding the influence of the large adjustable range of the adjusting springs 2.3 on the accuracy of the position of the cleaning device, so as to achieve a better use effect.

[0031] The cleaning mechanism 3 in this embodiment includes a thimble 3.1, a bracket 3.2 and a guide rail 3.3. The thimble 3.1 is connected to one end of the bracket 3.2, the other end of the bracket 3.2 is connected to the guide rail 3.3, and the guide rail 3.3 is connected to the lifting mechanism 1 and cooperates with the guiding mechanism 2.

[0032] The thimble 3.1 is a hollow steel pipe with a wall thickness of 12 mm. A solid cone head is welded at the top and an installation flange is welded at the bottom. The hollow steel pipe effectively reduces the weight of the equipment. Through the moment of inertia formula of the solid pipe: Wz = πD³ / 32; and the moment of inertia formula of the hollow pipe: Wz = (πD³ / 32)(1 - (d / D)), it can be obtained that the solid pipe is more likely to lose stability. The hollow pipe not only has a low weight but also relatively high stability. The guide rail 3.3 is formed by welding a channel steel and a steel plate, and is connected to the thimble 3.1 through the bottom flange, which is convenient for disassembly and assembly. The piston rod of the piston cylinder 1.2 is hinged to the guide rail 3.3 through a pin shaft.

[0033] The rotating mechanism 4 in this embodiment includes a cylinder mounting seat 4.1, a cylinder 4.2, a crank 4.3 and a slewing bearing 4.4. The cylinder barrel of the cylinder 4.2 is mounted on the cylinder mounting seat 4.1. The piston rod of the cylinder 4.2 is connected to the crank 4.3. The crank 4.3 is connected to the lifting mechanism 1. The lifting mechanism 1 is mounted on the inner ring of the slewing bearing 4.4. The outer ring of the slewing bearing 4.4 and the cylinder mounting seat 4.1 are both mounted on the platform 5.

[0034] The main body frame 1.1 is mounted on the inner ring of the slewing bearing 4.4. The cylinder 4.2 is mounted on the cylinder mounting seat 4.1 in a hinged form. The cylinder mounting seat 4.1 and the outer ring of the slewing bearing 4.4 are both fixed on the platform 5. The piston rod of the cylinder 4.2 is connected to the main body frame 1.1 through the crank 4.3 support. The cylinder 4.2 is equipped with a magnetic switch, which is convenient for obtaining the in-place signal. The cleaning device is driven by the cylinder 4.2 to switch between the standby position and the working position. The structure is simple, the stability is high, and it is convenient for maintenance.

[0035] Specifically, the working process of the tapping hole cleaning device of the electric arc furnace is as follows: when the tapping hole 7 needs to be cleaned, the piston cylinder 1.2 in the lifting mechanism 1 drives the guide rail 3.3 to descend, so that the thimble 3.1 descends to the lowest position; the cylinder 4.2 in the rotating mechanism 4 pushes the lifting mechanism 1 to drive the thimble 3.1 in the cleaning mechanism 3 to rotate to the position of the tapping hole 7, and then the piston cylinder 1.2 in the lifting mechanism 1 controls the thimble 3.1 to clean the tapping hole 7. After the cleaning is completed, the piston cylinder 1.2 in the lifting mechanism 1 lowers the thimble 3.1 in the cleaning mechanism 3 to the lowest position; the cylinder 4.2 in the rotating mechanism 4 drives the lifting mechanism 1 and the cleaning mechanism 3 to rotate to the standby position, and the piston cylinder 1.2 in the lifting mechanism 1 drives the cleaning mechanism 3 to rise to the highest position, and thus a working cycle is completed. The tapping hole cleaning device of the electric arc furnace can realize remote cleaning of the tapping hole, liberate manpower, and ensure the safety of equipment maintenance personnel; it improves the production efficiency of the whole system during the smelting process.

[0036] In addition, it should be noted that for the specific embodiments described in this specification, the shapes and names of the components can be different. The above content described in this specification is only an example of the structure of the present utility model. Any equivalent changes or simple changes made according to the structure, features, and principles conceived in the patent of the present utility model are included in the protection scope of the patent of the present utility model. Those skilled in the art of the present utility model can make various modifications, supplements, or use similar methods for substitution to the specific embodiments described, as long as they do not deviate from the structure of the present utility model or exceed the scope defined by this claim book, they should all fall within the protection scope of the present utility model.

Claims

1. An arc furnace tapping port cleaning device, characterized in that: It comprises a lifting mechanism (1), a guiding mechanism (2), a cleaning mechanism (3) and a rotating mechanism (4), wherein the guiding mechanism (2) is fixedly mounted on the lifting mechanism (1), the cleaning mechanism (3) is slidably mounted on the lifting mechanism (1), the cleaning mechanism (3) cooperates with the guiding mechanism (2), and the lifting mechanism (1) is connected to the rotating mechanism (4); The lifting mechanism (1) comprises a main frame (1.1), a piston cylinder (1.2), a cylinder hinge seat (1.3) and a pin shaft (1.4); the cylinder hinge seat (1.3) is mounted on the main frame (1.1); the cylinder barrel of the piston cylinder (1.2) is mounted on the cylinder hinge seat (1.3) via the pin shaft (1.4); and the piston of the piston cylinder (1.2) is connected to the cleaning mechanism (3); The guide mechanism (2) comprises a guide roller (2.1), a guide roller mounting seat (2.2), an adjustment spring (2.3), an adjustment top screw (2.4) and a guide wheel mounting slider (2.5); the guide roller (2.1) is rotatably mounted on the guide wheel mounting slider (2.5); the guide wheel mounting slider (2.5) is slidably mounted on the guide roller mounting seat (2.2); the adjustment top screw (2.4) penetrates the guide roller mounting seat (2.2); the adjustment top screw (2.4) is threadedly connected to the guide wheel mounting slider (2.5); the adjustment spring (2.3) is sleeved outside the adjustment top screw (2.4); and two ends of the adjustment spring (2.3) are respectively in contact with the guide roller mounting seat (2.2) and the guide wheel mounting slider (2.5); the guide roller mounting seat (2.2) is fixedly mounted on the lifting mechanism (1); and the guide roller (2.1) cooperates with the cleaning mechanism (3); The cleaning mechanism (3) comprises a ejector pin (3.1), a bracket (3.2) and a guide rail (3.3); the ejector pin (3.1) is connected to one end of the bracket (3.2); the other end of the bracket (3.2) is connected to the guide rail (3.3); the guide rail (3.3) is connected to the lifting mechanism (1), and the guide rail (3.3) cooperates with the guide mechanism (2); The rotating mechanism (4) comprises a cylinder mounting seat (4.1), a cylinder (4.2), a crank (4.3) and a slewing bearing (4.4); the cylinder barrel of the cylinder (4.2) is mounted on the cylinder mounting seat (4.1); the piston rod of the cylinder (4.2) is connected to the crank (4.3); the crank (4.3) is connected to the lifting mechanism (1); the lifting mechanism (1) is mounted on the inner ring of the slewing bearing (4.4); the outer ring of the slewing bearing (4.4) and the cylinder mounting seat (4.1) are both mounted on the platform (5).

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