A double position ladle refining furnace electrode rotating device

Abstract

The utility model belongs to the field of electric furnace smelting, especially relates to a double position ladle refining furnace electrode rotating device, including rotating frame, electrode rotating oil jar, rotating oil jar trunnion base, slewing bearing, rotating base, stand hanger, rotating locking device, oil cylinder support, proximity switch arrangement, the inner ring of slewing bearing is fixed in rotating base, the outer ring is connected with rotating frame, electrode rotating oil jar is driven rotating frame around slewing bearing centre axis between 1# work position and 2# work position through piston rod telescopic, the proximity switch arrangement detects the work position of rotating frame and triggers rotating locking device and locks rotating frame, through structural optimization and function cooperation, synchronous realization has been achieved to accurate positioning, stable operation, space saving, life extension and efficiency promotion, and the demand of modernization steel smelting to equipment high performance, low energy consumption, easy maintenance has been satisfied comprehensively.

Description

Technical Field

[0001] This utility model belongs to the field of electric furnace smelting, and in particular relates to an electrode rotation device for a dual-station ladle refining furnace. Background Technology

[0002] As a key piece of equipment in modern steelmaking processes, the dual-station ladle refining furnace achieves simultaneous ladle refining and ladle heating through its dual heating station design, effectively improving the capacity and efficiency of steel production and having significant application value in the steel industry.

[0003] However, traditional dual-station ladle refining furnaces have two major drawbacks in practical applications: On the one hand, the rotation mechanism layout of conventional double-station ladle refining furnaces is not optimized enough, the equipment occupies a large area, and has high requirements for site space, making it difficult to adapt to the production needs of steel plants with limited space. In particular, the site limitation problem is more prominent in the equipment upgrading and transformation of old steel plants, which seriously restricts the promotion and application of the equipment.

[0004] On the other hand, traditional equipment generally suffers from unstable electrode operation, specifically manifested as electrode oscillation and inaccurate positioning. This not only prolongs refining time and reduces production efficiency, but also increases energy consumption and electrode wear due to electrode positioning deviations and swaying causing unstable smelting arcs. Furthermore, the mechanical noise and sound and light pollution generated by electrode arc fluctuations further increase production costs and affect the production environment.

[0005] Currently, existing technologies are insufficient to simultaneously meet the comprehensive requirements of dual-station ladle refining furnaces for high-precision positioning, compact spatial layout, and stable operation under heavy load conditions, and cannot effectively solve the aforementioned problems of site limitations and operational instability. Therefore, developing a novel electrode rotation device for dual-station ladle refining furnaces that can overcome site limitations and achieve precise electrode positioning and stable operation has become an urgent need for the steel industry to improve production efficiency and reduce energy consumption and costs. Utility Model Content

[0006] This utility model provides an electrode rotation device for a dual-station ladle refining furnace. By combining a slewing bearing with a hydraulic-mechanical locking system, it achieves precise positioning of the electrode system, low-sway switching, and reduces the floor space required.

[0007] The specific technical solution of this utility model is as follows: A dual-station ladle refining furnace electrode rotation device includes: a rotating frame, an electrode rotation cylinder, a rotating cylinder trunnion seat, a slewing bearing, a rotating base, a column hanger, a rotation locking device, a cylinder support, and a proximity switch arrangement. The inner ring of the slewing bearing is fixed to the rotating base, and the outer ring is connected to the rotating frame. The electrode rotating cylinder drives the rotating frame to rotate between station 1 and station 2 around the central axis of the slewing bearing by extending and retracting the piston rod. The proximity switch is arranged to detect the position of the rotating frame and trigger the rotation locking device to lock the rotating frame.

[0008] The slewing bearing bears the axial load, radial load, and overturning moment load of the electrode system.

[0009] The upper part of the rotating frame is rigidly connected to the electrode lifting mechanism.

[0010] The rotary locking device is released after the current work station is completed. The electrode rotary cylinder reverses and drives the rotary frame to switch to another work station. The rotary locking device is then triggered again by a proximity switch to complete the locking.

[0011] It adopts a modular design, and each component can be disassembled and assembled independently.

[0012] The slewing bearing is made of high-strength wear-resistant material.

[0013] This technical solution has the following beneficial effects: Precise and reliable positioning: Through the synergistic action of proximity switch detection and mechanical locking mechanism, the electrodes are precisely aligned between the two workstations, completely eliminating the positioning deviation problem that is common in traditional devices, ensuring the consistency of electrode working position, effectively avoiding smelting process fluctuations caused by inaccurate positioning, and improving the stability of the refining process.

[0014] Stable and efficient operation: The slewing bearing is used as the core rotating component, which can stably withstand the combined loads such as axial, radial and overturning moments of the electrode system. With the auxiliary support of the column hanger for the rotating frame, the electrode sway phenomenon is significantly suppressed, the problem of "electrode swaying" in traditional equipment is solved, the stability of the smelting arc is ensured, and the mechanical noise and sound and light pollution caused by arc light fluctuations are reduced.

[0015] Significantly improved space utilization: The overall layout is optimized through modular and compact design, which greatly reduces the equipment footprint. It is especially suitable for upgrading and renovating old steel plants with limited space, reduces the constraints of site limitations on equipment application, improves site utilization efficiency, and facilitates rapid installation and renovation.

[0016] Extended service life and reduced maintenance costs: The slewing bearing is made of high-strength wear-resistant materials, which significantly improves the wear resistance of the equipment and effectively extends its service life; at the same time, the modular design reduces mechanical failures and maintenance frequency, lowers maintenance costs, and improves the economic applicability of the equipment.

[0017] Significantly improved production efficiency: The dual-station design allows for rapid switching, and the combination of precise positioning and stable operation significantly shortens refining time, enhances the continuous operation capability of the dual-station ladle refining furnace, effectively improves production efficiency and capacity, and further reduces energy consumption due to the shortened operation time, thus achieving the goal of energy conservation and consumption reduction.

[0018] In summary, this technical solution achieves precise positioning, stable operation, space saving, extended service life, and improved efficiency through structural optimization and functional synergy. It fully meets the requirements of modern steel smelting for high-performance, low-energy consumption, and easy maintenance of equipment, and is especially suitable for upgrading and transforming old steel plants and high-efficiency production scenarios. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0020] Figure 2 This is a top view of the device of this utility model.

[0021] In the diagram, the components are labeled as follows: 1-rotating frame, 2-electrode rotating cylinder, 3-rotating cylinder trunnion seat, 4-slewing bearing, 5-rotating base, 6-column hanger, 7-rotating locking device, 8-cylinder support, 9-proximity switch arrangement. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-2 As shown, the electrode rotation device for a dual-station ladle refining furnace disclosed in this utility model includes: a rotating frame 1, an electrode rotating cylinder 2, a rotating cylinder trunnion seat 3, a slewing bearing 4, a rotating base 5, a column hanger 6, a rotation locking device 7, a cylinder support 8, and a proximity switch arrangement 9.

[0024] The connection relationships, installation methods, and technical details of each component are as follows: Rotating frame 1: This is a frame structure that supports the electrode lifting mechanism and transmits rotational power. The upper part is connected to the electrode lifting mechanism, the lower part is connected to the outer ring of the slewing bearing 4, and the side is connected to the piston rod of the electrode rotating cylinder 2 to ensure the stability of the overall structure.

[0025] Slewing bearing 4: As a core rotating component, the inner ring is fixed to the rotating base 5, and the outer ring is connected to the rotating frame 1; the upper flange is rigidly connected to the electrode lifting mechanism, which can withstand the axial, radial and overturning moment loads of the electrode system and adapt to heavy-duty and high-temperature working environments.

[0026] Electrode rotating cylinder 2: The rotating frame 1 is driven to rotate by the extension and retraction of the piston rod. The cylinder body is fixed by the rotating cylinder trunnion seat 3. The piston rod is connected to the rotating frame 1 and works with the cylinder support 8 to achieve stable transmission.

[0027] Column hanger 6: Fixed below the rotating frame 1, assisting the rotating frame 1 in ensuring stability during rotation and suppressing swaying.

[0028] Proximity switch arrangement 9: Set for stations 1 and 2, used to detect the station position of rotating frame 1 and trigger rotation locking device 7.

[0029] Rotary locking device 7: Linked with proximity switch arrangement 9, when the rotating frame 1 reaches the target station (station 1 or station 2), the rotating frame 1 is precisely locked; after the operation is completed, the lock is released, allowing the rotating frame 1 to switch stations.

[0030] This device achieves dual-station switching through the coordinated use of hydraulic drive and mechanical locking. The specific process is as follows: Step 1: The piston rod of the electrode rotating cylinder 2 extends, driving the rotating frame 1 to rotate around the central axis of the slewing bearing 4; when it rotates to position 1, the proximity switch arrangement 9 detects the position signal and triggers the rotation locking device 7 to lock the rotating frame 1, and the electrode performs operation at position 1.

[0031] Step 2: After the operation at station #1 is completed, the rotary locking device 7 is unlocked, and the electrode rotating cylinder 2 is driven in the reverse direction to rotate the rotating frame 1 to station #2; the proximity switch arrangement 9 detects the position signal again, the rotary locking device 7 locks the rotating frame 1, and the electrode performs the operation at station #2.

[0032] Step 3: Repeat the above steps to achieve continuous switching between the two workstations, meeting the process requirements of simultaneous ladle refining and ladle heating.

[0033] The slewing bearing 4 of this invention is made of high-strength material and has a wear-resistant design, which reduces wear and extends service life; together with the auxiliary support of the column hanger 6, it effectively suppresses electrode sway and improves operational stability.

[0034] The overall design adopts a modular approach, and each component can be disassembled and assembled independently, which facilitates installation and maintenance, reduces mechanical failures and maintenance frequency, and lowers maintenance costs.

[0035] After being applied to a dual-station ladle refining furnace, this device achieved precise electrode positioning and stable operation, solving the problems of inaccurate positioning and electrode wobbling in traditional equipment; it reduced the equipment footprint, adapting to the needs of steel mills with limited space and the renovation of old plants; it shortened refining time, improved production efficiency, and at the same time reduced energy consumption and electrode wear, thus reducing production costs.

Claims

1. An electrode rotation device for a dual-station ladle refining furnace, characterized in that, include: Rotating frame (1), electrode rotating cylinder (2), rotating cylinder trunnion seat (3), slewing bearing (4), rotating base (5), column hanger (6), rotating locking device (7), cylinder support (8), proximity switch arrangement (9); The inner ring of the slewing bearing (4) is fixed to the rotating base (5), and the outer ring is connected to the rotating frame (1); The electrode rotating cylinder (2) drives the rotating frame (1) to rotate around the central axis of the slewing bearing (4) between station 1 and station 2 by extending and retracting the piston rod; The proximity switch arrangement (9) detects the work position of the rotating frame (1) and triggers the rotation locking device (7) to lock the rotating frame (1).

2. The apparatus according to claim 1, characterized in that: The slewing bearing (4) bears the axial load, radial load and overturning moment load of the electrode system.

3. The apparatus according to claim 1, characterized in that: The upper part of the rotating frame (1) is rigidly connected to the electrode lifting mechanism.

4. The apparatus according to claim 1, characterized in that: The rotating locking device (7) is unlocked after the current work station is completed. The electrode rotating cylinder (2) drives the rotating frame (1) in the opposite direction to switch to another work station, and the rotating locking device (7) is triggered again by the proximity switch arrangement (9) to complete the locking.

5. The apparatus according to claim 1, characterized in that: It adopts a modular design, and each component can be disassembled and assembled independently.

6. The apparatus according to claim 1 or 2, characterized in that: The slewing bearing (4) is made of high-strength wear-resistant material.

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