Electric arc furnace for melting quartz
By using a servo motor-driven threaded rod and rack structure and an automatic exhaust system, the problems of angle adjustment and pressure control in the quartz melting electric arc furnace are solved, achieving uniform heating of quartz raw materials and improving melting quality, thus enhancing the automation and safety of the equipment.
Patent Information
- Application Number
- CN202521910766.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-05
AI Technical Summary
Existing quartz melting electric arc furnaces suffer from problems such as low furnace angle adjustment precision, uneven heating, and unbalanced internal pressure control, which affect melting quality and safety.
The electric arc furnace body is precisely angled by using a servo motor-driven threaded rod and rack structure, and steam discharge is controlled by an automatic exhaust structure to ensure heating uniformity and pressure stability.
It achieves uniform heating of quartz raw materials, improves melting quality, reduces energy consumption, enhances equipment automation and safety, and prevents contamination from external impurities.
Smart Images
Figure CN224677965U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electric arc furnace technology, and in particular to an electric arc furnace for quartz melting. Background Technology
[0002] In the field of quartz melting production, electric arc furnaces are core equipment. Their operational stability and melting quality directly determine product quality. Currently, mainstream quartz melting electric arc furnaces have two major problems: First, the furnace body angle adjustment precision is low, relying mostly on manual or simple mechanical structures. It is difficult to dynamically adjust the tilt angle according to the raw material distribution and heating area, which easily leads to uneven heating of local raw materials, resulting in insufficient melting or over-sintering, affecting the purity of the quartz melt and subsequent processing performance. Second, there is an imbalance between furnace pressure and exhaust control. Traditional equipment mostly uses fixed exhaust ports or manual intermittent exhaust. The former is prone to excessive heat loss and increased energy consumption, and cannot cope with the safety risks of sudden pressure increases during melting. The latter requires frequent manual operation, which is not only inefficient, but may also cause furnace pressure to exceed the standard due to operation delays. At the same time, external impurities can easily enter the furnace through the exhaust port, contaminating the molten raw materials, further restricting the improvement of quartz product quality and making it difficult to meet the industrial needs of high-precision quartz processing. This has brought certain adverse effects to the use process. In order to solve the shortcomings of existing technologies, we propose an electric arc furnace for quartz melting. Utility Model Content
[0003] The main objective of this invention is to provide an electric arc furnace for quartz melting, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An electric arc furnace for quartz melting includes a base plate and a furnace body. Connecting blocks are fixedly connected to both sides of the furnace body. A fixing rod is fixedly connected to the side of each connecting block away from the furnace body. An arc-shaped rack is fixedly connected to the lower end of each connecting block. Two vertical plates are symmetrically fixed to the upper end of the base plate. A straight rack is detachably connected to the upper end of each vertical plate, and limit plates are fixedly connected to both sides of the straight rack. A support column is fixedly connected to the upper end of the base plate, and a fixing plate is fixedly connected to the upper end of the support column. A servo motor is detachably connected to one side of the fixing plate, and a threaded rod is detachably connected to the output shaft of the servo motor. Two symmetrical openings are formed on the surface of the fixing plate. A rectangular groove is provided, and a guide rod is fixedly connected inside the rectangular groove. The outer surface of the threaded rod and the two guide rods are fitted with movable blocks. A connecting frame is fixedly connected to one side of the multiple movable blocks. Two bearings are symmetrically embedded on the connecting frame. A discharge pipe is fixedly connected to one side of the electric arc furnace body, and a high-temperature resistant solenoid valve is detachably connected to the middle of the discharge pipe. A furnace cover is closed on the top of the electric arc furnace body. Multiple electrodes are installed on the furnace cover, and two fixed cylinders are symmetrically fixed at the upper end of the furnace cover. Sliding grooves are opened on both sides of the fixed cylinder. The fixed cylinder is equipped with a sealing plate and a spring, and sliding blocks are fixedly connected to both sides of the sealing plate. A receiving box is fixedly connected to the upper end of the bottom plate.
[0005] Preferably, the straight rack is detachably connected to the upper end of the vertical plate by multiple bolts, and the tooth surface of the arc rack is fully engaged with the tooth surface of the straight rack, and the curvature of the arc rack is adapted to the rotation trajectory of the electric arc furnace body.
[0006] Preferably, the servo motor is detachably connected to one side of the fixed plate via a motor mounting base, and a rubber shock-absorbing pad is provided between the motor mounting base and the fixed plate. The end of the threaded rod away from the servo motor is rotatably connected to the fixed plate via a bearing.
[0007] Preferably, one of the movable blocks has a threaded hole and is threadedly connected to the threaded rod through the threaded hole; the other two movable blocks each have a through hole and are slidably connected to the outer surfaces of the two guide rods through the through hole.
[0008] Preferably, the spring is coaxially disposed inside the fixed cylinder, and the two ends of the spring are fixedly connected to the bottom wall of the fixed cylinder and the upper surface of the sealing plate, respectively. The sliding block and the sealing plate are integrally formed, and the sliding block is slidably embedded in the sliding groove. The sealing plate reciprocates along the axial direction of the fixed cylinder through the cooperation between the sliding block and the sliding groove.
[0009] Preferably, the connecting frame is a U-shaped steel structure, with multiple movable blocks welded to one side of the connecting frame, and the two fixed rods rotatably connected to two bearings respectively.
[0010] Compared with the prior art, the present invention has the following beneficial effects: This electric arc furnace for quartz melting, through its servo motor, threaded rod, guide rod, moving block, connecting frame, and the meshing structure of arc-shaped and straight racks, can precisely adjust the tilt angle of the furnace body. The servo motor drives the threaded rod to rotate, which in turn moves the moving block and connecting frame smoothly. In conjunction with the arc-shaped rack sliding along the straight rack, it achieves stable angle adjustment, optimizes the heating uniformity of the quartz raw material, avoids local overheating or insufficient melting, improves the melting quality, and the limit plate can prevent over-adjustment, ensuring the safety of equipment operation and adapting to different melting process requirements.
[0011] This electric arc furnace for quartz melting features an automatic venting structure consisting of a fixed cylinder, springs, a sealing plate, and sliding blocks. This structure allows for controlled steam discharge. During melting, when the steam pressure reaches a preset value, it pushes the sealing plate to compress the spring and release the steam. After the pressure decreases, the sealing plate resets and seals the furnace. This design avoids safety hazards caused by excessive pressure inside the furnace, reduces heat loss, saves energy, and prevents external impurities from entering the furnace and contaminating the raw materials, ensuring the purity of the quartz melt. The furnace eliminates the need for manual venting, thus improving the automation level and operational efficiency of the equipment. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a partial sectional view of the furnace cover of this utility model.
[0013] In the diagram: 1. Base plate; 2. Electric arc furnace body; 3. Connecting block; 4. Fixing rod; 5. Arc-shaped rack; 6. Vertical plate; 7. Straight rack; 8. Limiting plate; 9. Support column; 10. Fixing plate; 11. Servo motor; 12. Threaded rod; 13. Rectangular groove; 14. Guide rod; 15. Moving block; 16. Connecting frame; 17. Bearing; 18. Discharge pipe; 19. High-temperature resistant solenoid valve; 20. Furnace cover; 21. Electrode; 22. Fixing cylinder; 23. Sliding groove; 24. Sealing plate; 25. Sliding block; 26. Spring; 27. Receiving box. 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] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an electric arc furnace for quartz melting includes a base plate 1 and an electric arc furnace body 2. Two vertical plates 6 are symmetrically welded to the upper end of the base plate 1. A straight rack 7 is detachably connected to the upper end of the vertical plates 6 by bolts. The bolt distribution ensures that the straight rack 7 is subjected to uniform force. Limiting plates 8 are welded to both sides of the straight rack 7 to limit the stroke of the arc-shaped rack 5. A connecting block 3 is welded to the middle of the outer wall on both sides of the electric arc furnace body 2. A cylindrical fixing rod 4 with its axis aligned with the radial direction of the electric arc furnace body 2 is welded to the side of the connecting block 3 away from the electric arc furnace body 2. An arc-shaped rack 5 is welded to the lower end face of the connecting block 3. The tooth surface of the arc-shaped rack 5 faces downward and its curvature matches the rotation trajectory of the electric arc furnace body 2 around the axis of the fixing rod 4, ensuring that it is perfectly aligned with the tooth surface of the straight rack 7. The base plate 1 is fully engaged. A support column 9 is welded to the upper end of the base plate 1, and a horizontal fixing plate 10 is welded to the top of the support column 9. The servo motor 11 is detachably connected to one side of the fixing plate 10, and the output shaft of the servo motor 11 is detachably connected to the threaded rod 12 via a coupling. The other end of the threaded rod 12 is rotatably connected to the fixing plate 10 via a bearing. The outer ring of the bearing is interference-fitted with the preset mounting hole of the fixing plate 10, and the inner ring is interference-fitted with the threaded rod 12. Two rectangular slots 13 are symmetrically opened on the upper surface of the fixing plate 10, with their length direction parallel to the axis of the threaded rod 12. A guide rod 14 parallel to the axis of the threaded rod 12 is welded into each rectangular slot 13. The outer surfaces of the threaded rod 12 and the two guide rods 14 are each fitted with... A movable block 15 is provided, wherein the movable block 15 outside the threaded rod 12 has a matching internal threaded hole and is linked by a threaded connection. The two movable blocks 15 outside the guide rod 14 have matching smooth through holes and slide by clearance fit. The three movable blocks 15 are fixed to the U-shaped structure connecting frame 16 by welding on the same side. A bearing 17 is embedded in each of the two free ends of the connecting frame 16. The inner ring of the bearing 17 is interference-fitted with the fixing rods 4 on both sides of the electric arc furnace body 2 to achieve rotational connection. A discharge pipe 18 is welded to one side of the electric arc furnace body 2 to facilitate the discharge of molten material. The middle of the discharge pipe 18 is detachably connected to a high-temperature resistant solenoid valve 19 through a flange structure. A furnace cover 2 is closed at the top opening of the electric arc furnace body 2. 0. Multiple electrodes 21 are installed on the furnace cover 20. Two fixed cylinders 22 are symmetrically welded to the upper end of the furnace cover 20. Sliding grooves 23 are opened on both sides of the fixed cylinders 22. Springs 26 are coaxially arranged inside the fixed cylinders 22. The two ends of the springs 26 are welded and fixed to the inner bottom wall of the fixed cylinders 22 and the upper end face of the sealing plate 24, respectively. Sliding blocks 25 are integrally formed on both sides of the sealing plate 24. The sliding blocks 25 are slidably embedded in the sliding grooves 23, so that the sealing plate 24 can slide back and forth along the axial direction of the fixed cylinders 22 through the cooperation of the sliding blocks 25 and the sliding grooves 23. The sealing plate 24 is corresponding to the steam outlet preset on the furnace cover 20. The sliding grooves 23 are connected to the inside of the furnace cover 20 to form a steam discharge channel.
[0016] It should be noted that this utility model is an electric arc furnace for quartz melting. In use, the quartz raw material to be melted is first added into the furnace body 2, then the furnace lid 20 is closed. At this time, the sealing plate 24 moves downward along the fixed cylinder 22 under the elastic force of the spring 26. Combined with the guiding action of the sliding block 25 and the sliding groove 23, an initial seal is formed on the steam outlet on the furnace lid 20. Then, the electrode 21 is activated, generating an electric arc to heat and melt the quartz raw material. During the melting process, the steam generated accumulates inside the furnace body 2, forming a certain pressure. When the pressure reaches a preset value, the steam pushes the sealing plate 24 to overcome the elastic force of the spring 26 and move upward along the fixed cylinder 22, connecting the steam outlet with the sliding groove 23. The steam is then smoothly discharged through the sliding groove 23. After the steam is discharged, the pressure decreases, and the sealing plate 24 resets under the action of the spring 26, closing the steam outlet, thus achieving automatic and controllable steam discharge. If adjustment of the furnace body 2 is required during the melting process... The tilt angle is adjusted to optimize heating uniformity. The servo motor 11 is activated, which drives the threaded rod 12 to rotate. The threaded rod 12 drives the corresponding moving block 15 to move along the axial direction of the threaded rod 12 through the threaded connection. At the same time, the other two moving blocks 15 move synchronously under the guidance of the guide rod 14. The moving blocks 15 drive the connecting frame 16 to move as a whole. The connecting frame 16 drives the electric arc furnace body 2 to move through the cooperation of the bearing 17 and the fixed rod 4. At this time, the arc-shaped rack 5 at the lower end of the connecting block 3 on both sides of the electric arc furnace body 2 slides along the straight rack 7. The limiting plate 8 restricts the sliding range of the arc-shaped rack 5, thereby realizing the stable adjustment of the tilt angle of the electric arc furnace body 2. After the quartz raw material is melted, the electrode 21 is closed and the high-temperature resistant solenoid valve 19 is opened. The tilt angle of the electric arc furnace body 2 is adjusted by the servo motor 11, so that the molten solution in the electric arc furnace body 2 is discharged into the receiving box 27 on the bottom plate 1 through the discharge pipe 18 under the action of gravity, thereby completing the quartz melting operation.
[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An electric arc furnace for quartz melting, comprising a base plate (1) and an electric arc furnace body (2), characterized in that: The electric arc furnace body (2) is fixedly connected to both sides with connecting blocks (3). A fixing rod (4) is fixedly connected to the side of the connecting block (3) away from the electric arc furnace body (2). An arc-shaped rack (5) is fixedly connected to the lower end of both connecting blocks (3). Two vertical plates (6) are symmetrically fixed to the upper end of the base plate (1). A straight rack (7) is detachably connected to the upper end of the vertical plate (6). Limiting plates (8) are fixedly connected to both sides of the straight rack (7). A support column (9) is fixedly connected to the upper end of the base plate (1). A fixing plate (10) is fixedly connected to the upper end of the support column (9). A servo motor (11) is detachably connected to one side of the fixing plate (10). A threaded rod (12) is detachably connected to the output shaft of the servo motor (11). Two rectangular grooves (13) are symmetrically opened on the surface of the fixing plate (10). A guide rod (14) is fixedly connected in the rectangular groove (13). The outer surfaces of the threaded rod (12) and the two guide rods (14) are fitted with moving blocks (15). A connecting frame (16) is fixedly connected to one side of the multiple moving blocks (15). Two bearings (17) are symmetrically embedded on the connecting frame (16). A discharge pipe (18) is fixedly connected to one side of the electric arc furnace body (2). A high-temperature resistant electromagnetic valve (19) is detachably connected to the middle of the discharge pipe (18). A furnace cover (20) is covered on the top of the electric arc furnace body (2). Multiple electrodes (21) are installed on the furnace cover (20). Two fixed cylinders (22) are symmetrically fixed at the upper end of the furnace cover (20). Sliding grooves (23) are opened on both sides of the fixed cylinder (22). A sealing plate (24) and a spring (26) are provided on the fixed cylinder (22). Sliding blocks (25) are fixedly connected to both sides of the sealing plate (24). A receiving box (27) is fixedly connected to the upper end of the bottom plate (1).
2. The electric arc furnace for quartz melting according to claim 1, characterized in that: The straight rack (7) is detachably connected to the upper end of the vertical plate (6) by multiple bolts, and the tooth surface of the arc rack (5) is fully engaged with the tooth surface of the straight rack (7). The arc of the arc rack (5) is adapted to the rotation trajectory of the electric arc furnace body (2).
3. The electric arc furnace for quartz melting according to claim 1, characterized in that: The servo motor (11) is detachably connected to one side of the fixed plate (10) via a motor mounting base. A rubber shock-absorbing pad is provided between the motor mounting base and the fixed plate (10). The end of the threaded rod (12) away from the servo motor (11) is rotatably connected to the fixed plate (10) via a bearing.
4. The electric arc furnace for quartz melting according to claim 1, characterized in that: One of the movable blocks (15) has a threaded hole and is threadedly connected to the threaded rod (12) through the threaded hole. The other two movable blocks (15) have through holes and are slidably connected to the outer surfaces of the two guide rods (14) through the through holes.
5. The electric arc furnace for quartz melting according to claim 1, characterized in that: The spring (26) is coaxially disposed inside the fixed cylinder (22). The two ends of the spring (26) are fixedly connected to the bottom wall of the fixed cylinder (22) and the upper end face of the sealing plate (24) respectively. The sliding block (25) and the sealing plate (24) are integrally formed. The sliding block (25) is slidably embedded in the sliding groove (23). The sealing plate (24) reciprocates along the axial direction of the fixed cylinder (22) through the cooperation of the sliding block (25) and the sliding groove (23).
6. The electric arc furnace for quartz melting according to claim 1, characterized in that: The connecting frame (16) is a U-shaped steel structure. Multiple moving blocks (15) are welded to one side of the connecting frame (16), and the two fixed rods (4) are rotatably connected to the two bearings (17) respectively.