Sand filling device for electric arc furnace
By designing an automated controlled arc furnace sand filling device, the safety hazards, harsh operating environment, and difficult to control the sand filling method in the existing technology are solved, and a more efficient and safer sand filling process is achieved, reducing the risk of steel leakage and maintenance costs, and improving productivity.
Patent Information
- Application Number
- CN202420852903.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing arc furnace sand filling method has safety hazards, harsh operating environment, difficult to control the amount of sand, and inaccurate sanding position, resulting in high risk of steel leakage, high labor intensity, high maintenance cost and low productivity.
An arc furnace sand filling device is designed, using components such as main support arm, secondary support arm, servo motor, cylinder and solenoid valve to realize the automated control of sand filling process.
Through automated control, the labor intensity and safety risks of operators are reduced, the accuracy and efficiency of sand material and gasa are improved, the risk of steel leakage is reduced, maintenance costs are reduced, and productivity is improved.
Smart Images
Figure CN222834340U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric arc furnaces, in particular to a sand filling device for an electric arc furnace. Background Art
[0002] At present, the sand filling of the EBT port of steel-making electric furnaces at home and abroad all relies on the operator to manually add sand on the eccentric cover of the electric arc furnace: operator + sand bag → put on the EBT eccentric cover of the electric furnace → observe and add sand.
[0003] This method has the following disadvantages: 1. The temperature in front of the furnace is high, the ambient temperature is high, and the operating environment is poor; 2. It relies on the operator to manually add sand through the EBT eccentric cover of the electric arc furnace, which poses certain safety hazards; 3. Since it relies on manual observation, the amount of sand added is difficult to control; 4. The adding position is inaccurate, and the EBT tray may burn through during steelmaking, posing a risk of steel leakage.
[0004] Currently, the artificial sand adding method is used, which has high labor intensity for operators, poor working environment, certain safety hazards, high steel leakage accident rate, and too long furnace shutdown and maintenance time, which affects smelting, resulting in a decrease in steelmaking output and an increase in operation and maintenance costs. Utility Model Content
[0005] The utility model aims to provide an arc furnace sand filling device to solve the problems raised in the above background technology.
[0006] In order to achieve the above object, the utility model provides the following technical solutions:
[0007] An electric arc furnace sand filling device comprises an electric furnace platform, the electric furnace platform is rotatably connected to a main supporting arm, the electric furnace platform is connected to a main driving device, the main driving device is connected to the main supporting arm, the main supporting arm is rotatably connected to a column, the main trailing arm is connected to a secondary driving device, the secondary driving device is connected to the column, the column is connected to a cylinder, the cylinder output shaft is connected to a secondary trailing arm, and the secondary supporting arm is connected to a sand adding mechanism.
[0008] Preferably, a solenoid valve is provided inside the sand adding mechanism.
[0009] Preferably, both the main driving device and the auxiliary driving device adopt servo motors.
[0010] Preferably, the cylinder is connected to the auxiliary supporting arm via a pin shaft.
[0011] Preferably, guide rollers are arranged on the inner side of the column.
[0012] Preferably, the sand adding mechanism comprises a feeding hopper and a feeding pipe, the feeding pipe is connected to the feeding hopper, and the solenoid valve is located in the feeding pipe.
[0013] Compared with the prior art, this technical solution produces the following beneficial effects:
[0014] (1) The utility model electric furnace meets the requirements of furnace body tilting during electric furnace smelting, which can meet the use requirements and reduce maintenance costs; the structure is simple, and the rotation and lifting are smooth; through the independent rotation of the main support arm and the auxiliary support arm, and the lifting function of the auxiliary support arm, the purpose of automatically receiving sand and automatically adding sand is achieved. At the same time, the influence of the dust removal hood beam and the column position of the electric arc furnace is taken into account, the layout is reasonable, the maintenance cost is reduced, and the productivity is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a front view schematic diagram of the utility model when the sand filling is in progress;
[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0017] Figure 3 It is a top view schematic diagram of the utility model when sand filling is in progress;
[0018] Reference numerals: main drive device 1, main supporting arm 2, column 3, auxiliary drive device 4, cylinder 5, guide roller 6, auxiliary supporting arm 7, solenoid valve 8, sand adding mechanism 9, electric furnace platform 10. DETAILED DESCRIPTION
[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples:
[0020] like Figures 1 to 3 The electric arc furnace sand filling device shown in the figure comprises an electric furnace platform 10, the electric furnace platform 10 is rotatably connected to a main supporting arm 2 through a slewing bearing, the electric furnace platform 10 is connected to a main driving device 1, the main driving device 1 is connected to the main supporting arm 2, the main supporting arm 2 is rotatably connected to a column 3 through a slewing bearing, the main trailing arm is connected to an auxiliary driving device 4, the auxiliary driving device 4 is connected to the column 3, the inner side of the column 3 is fixedly connected to a cylinder 5, the output shaft of the cylinder 5 is fixedly connected to the auxiliary trailing arm, the auxiliary trailing arm can be driven to move upward or downward by the cylinder 5, and the auxiliary supporting arm 7 is connected to a sand adding mechanism 9; the main driving device 1 and the auxiliary driving device 4 are both equipped with servo motors
[0021] An electromagnetic valve 8 is provided inside the sand adding mechanism 9; the cylinder 5 is connected to the auxiliary supporting arm 7 by a pin shaft; a guide roller 6 is provided on the inner side of the column 3; the auxiliary supporting arm 7 is fixed and guided by the guide roller 6; the sand adding mechanism 9 includes a feeding hopper and a feeding pipe, the feeding pipe is connected to the feeding hopper, the feeding pipe is fixedly arranged at the bottom of the feeding hopper and is connected to the feeding hopper, the electromagnetic valve 8 is located in the feeding pipe, and the sand adding mechanism 9 is opened and closed by the electromagnetic valve 8 to fill sand.
[0022] The following describes the rotation of the column 3 relative to the main supporting arm 2 by taking the rotation connection between the column 3 and the main supporting arm 2 as an example. The column 3 is rotationally connected to the main trailing arm through a slewing bearing. The slewing bearing is a bearing that can withstand large radial loads and axial loads. The slewing bearing is generally divided into an inner ring and an outer ring, and the inner ring and the outer ring are rotatably connected. This application uses a slewing bearing with an inner gear on the inner ring, such as Figure 2 As shown, the outer ring of the slewing bearing is fixedly connected to the main trailing arm, and the inner ring of the slewing bearing is fixedly connected to the column 3, thereby realizing the rotation connection between the column 3 and the main trailing arm. The auxiliary drive rotation is composed of a servo motor, and a gear is connected to the output shaft of the servo motor. The connecting gear is meshed with the inner gear ring on the inner ring of the slewing bearing. The servo motor drives the connecting gear to rotate and then drives the inner ring to rotate relative to the outer ring, thereby realizing the rotation of the column 3 and the main trailing arm. The structure and use principle of the slewing bearing are the prior art known to practitioners in this field. The above description is only a rough description of its function and connection, and the more detailed internal structure is the prior art known to practitioners in this field, which will not be repeated here. The rotation connection between the main trailing arm and the electric furnace platform 10 is similar.
[0023] The specific implementation process is as follows:
[0024] The operating principle of the utility model is now described as follows: the entire sand adding process is fully automated, and the specific process is: crane (or cantilever crane) → sand hopper receives sand at the sand receiving position (away from the electric furnace) → main drive device 1 drives main support arm 2 to rotate → auxiliary drive device 4 drives auxiliary support arm 7 to rotate to the sand adding waiting position → auxiliary drive device 4 drives auxiliary support arm 7 to rotate to the sand adding position → cylinder 5 drives auxiliary support arm 7 to descend and add sand → cylinder 5 drives auxiliary support arm 7 to rise → main support arm 2 and auxiliary support arm 7 rotate to the sand receiving position, and the sand adding process ends. When the sand filling is completed, the sand adding mechanism rotates to the sand receiving position to add sand.
[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. An arc furnace sand filling device, characterized in that: The electric furnace platform (10) comprises an electric furnace platform (10), wherein the electric furnace platform (10) is rotatably connected to a main supporting arm (2), the electric furnace platform (10) is connected to a main driving device (1), the main driving device (1) is connected to the main supporting arm (2), the main supporting arm (2) is rotatably connected to a column (3), the main supporting arm (2) is connected to a secondary driving device (4), the secondary driving device (4) is connected to the column (3), the column (3) is connected to a cylinder (5), the output shaft of the cylinder (5) is connected to a secondary supporting arm (7), and the secondary supporting arm (7) is connected to a sand adding mechanism (9).
2. An arc furnace sand filling device as claimed in claim 1, characterized in that: The sand adding mechanism (9) is internally provided with an electromagnetic valve (8).
3. The electric arc furnace sand filling device according to claim 1, characterized in that: The main driving device (1) and the auxiliary driving device (4) both adopt servo motors.
4. The electric arc furnace sand filling device according to claim 1, characterized in that: The cylinder (5) is connected to the auxiliary supporting arm (7) via a pin shaft.
5. The electric arc furnace sand filling device according to claim 1, characterized in that: A guide roller (6) is arranged inside the column (3).
6. The electric arc furnace sand filling device according to claim 2, characterized in that: The sand adding mechanism (9) comprises a feeding hopper and a feeding pipe, the feeding pipe is connected to the feeding hopper, and the solenoid valve (8) is located in the feeding pipe.