Submerged arc furnace body refractory brick pressing device
By designing a refractory brick clamping device for the submerged arc furnace body, and utilizing support arms, connecting rods, and a hydraulic system to adjust the clamping force in real time, the problem of refractory brick loosening and falling off was solved, thereby improving the stability and cost-effectiveness of the refractory bricks.
Patent Information
- Application Number
- CN202520494050.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-03-20
AI Technical Summary
In existing electric arc furnaces, refractory bricks are prone to loosening and falling off during electrode raising and lowering, leading to furnace body leakage and high-temperature gas leakage. Traditional methods are costly and have limited effectiveness.
Design a refractory brick clamping device for a submerged arc furnace body, including a support arm, connecting rod, pressure plate and hydraulic system. The clamping force is adjusted in real time by a pressure sensor and a PLC controller. Dynamic clamping is achieved by utilizing the wave-shaped anti-slip texture and the high temperature resistance of the ceramic layer.
It effectively prevents refractory bricks from falling off, extends service life, reduces maintenance costs by more than 30%, and improves safety and stability.
Smart Images
Figure CN223580630U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of ore furnace equipment, concretely is ore furnace body firebrick compression device. BACKGROUND
[0002] In the process of electrode lifting, the existing ore furnace is directly contacted and rubbed with the firebrick of the furnace body side wall, and long-term operation can easily lead to loosening or even falling of the firebrick, forming security risks such as furnace body liquid leakage and high-temperature gas leakage. SUMMARY
[0003] The utility model discloses a simple structure and high reliability ore furnace body firebrick compression device, solves the problem of firebrick falling caused by electrode friction, and reduces maintenance cost and security risks.
[0004] The technical solution of the utility model is as follows: an ore furnace body firebrick compression device comprises a support arm fixed beside the firebrick of a furnace body, a support shaft is horizontally arranged at the upper end of the support arm, a connecting rod is connected to the support shaft as a fulcrum, a pressing plate is movably hung at the front end of the connecting rod, and the rear end of the connecting rod is slidably connected to a base.
[0005] The above-mentioned scheme further comprises:
[0006] The contact surface between the pressing plate and the firebrick is designed with a wavy anti-skid pattern.
[0007] The contact surface between the pressing plate and the firebrick is designed with a pressure sensor, the pressure sensor is connected to a PLC controller, and an adjusting hydraulic cylinder is further arranged to drive the connecting rod to move.
[0008] The rear end of the connecting rod is connected to a horizontal sliding rod, and the horizontal sliding rod is connected to two sliding shafts on the base.
[0009] The utility model has the advantages of: 1. Anti-falling: the pressing plate is arranged, the pressing force of the dynamic adjustment system is adjusted to offset the impact of electrode friction, and the service life of the firebrick is prolonged. 2. Adjustable: the adjusting mechanism supports manual or automatic pressure adjustment, and is suitable for different working conditions. 3. High-temperature resistant: the ceramic layer on the surface of the pressing plate avoids high-temperature deformation, and ensures long-term stability. 4. Economy: the replacement frequency of the firebrick is reduced, and the annual maintenance cost is reduced by more than 30%.
[0010] The embodiments of the utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model.
[0012] Figure 2 is Figure 1 schematic diagram of the structure from above.
[0013] Figure 3 is Figure 1 schematic diagram of the structure from the left.
[0014] Figure 4 is a schematic diagram of the structure of the connecting rod part.
[0015] Figure 5 is Figure 4 schematic diagram of the structure from the left. DETAILED DESCRIPTION
[0016] Referring to Figures 1-5 , the names of the parts are as follows: support shaft 1, connecting rod 2, pressing plate 3, pressure sensor 4, hydraulic cylinder 5, refractory brick 6, support arm 7, base 8, transverse sliding rod 9, sliding shaft 10, manually controlled bolt adjusting device 11, fixed slide 12, long arm L1, short arm L2.
[0017] Referring to Figures 1-5 , the refractory brick pressing device of the submerged arc furnace body comprises a support arm 7 fixed beside the refractory brick 6 of the furnace body, a support shaft 1 transversely arranged at the upper end of the support arm 7, the support shaft 1 being made of high-chromium cast iron material and being resistant to high-temperature oxidation. A connecting rod 2 is connected to the support shaft 1 as a fulcrum, the connecting rod 2 being arc-shaped and having two pairs of plate structures. The front end of the connecting rod 2 is movably connected to a pressing plate 3 through a vertical column, and the rear end of the connecting rod 2 is slidably connected to a base 8. The connecting rod 2 slides forward and backward with the support shaft 1 as a fulcrum to drive the pressing plate 3 to press the refractory brick 6, and the hydraulic driving force is amplified and transmitted to the pressing plate 3 through the connecting rod 2. The contact surface between the pressing plate 3 and the refractory brick is designed with a wavy anti-skid pattern, and the surface of the pressing plate 3 is covered with an alumina-based ceramic coating with a thickness of 0.5-1 mm, which is prepared by plasma spraying process and has a temperature resistance of above 1500°C. The contact surface between the pressing plate 3 and the refractory brick is designed with a pressure sensor 4, which is connected to a PLC controller for control, real-time monitoring of the pressing force and adjustment of the output of the hydraulic cylinder 5, with an error control of ±5%. The length of the connecting rod 2 can be manually adjusted to adapt to different furnace types. The hydraulic cylinder 5 moves to drive the connecting rod 2 to move forward and backward, realizing movement through pressure adjustment. The rear end of the connecting rod 2 is connected to a transverse sliding rod 9, and the transverse sliding rod 9 is connected to two sliding shafts 10 on the base 8.
[0018] Structure assembly: the support shaft 1 is welded to the side wall of the submerged arc furnace, and the axis is parallel to the electrode lifting direction. The pressing plate 3 is made of high-temperature resistant alloy steel plate with a thickness of 20 mm, and the surface is sprayed with an alumina ceramic layer. The manually controlled bolt adjusting device 11 is a screw that can be loosened, moved left and right, and tightened to fix the position as needed.
[0019] Action process:
[0020] The tightening action: after the manual control bolt adjusting device 11 is adjusted to the initial position, the screw nut on the device is locked on the transverse slide rod 9. When the pressure sensor 4 checks that the pressure decreases, the signal is transmitted to the hydraulic cylinder 5 through the PLC automatic system, the hydraulic cylinder 5 is retracted, the manual control bolt adjusting device 11 is moved backward through the transverse slide rod 9, the connecting rod 2 is forced upward, the force is transmitted to the pressing plate 3 through the supporting shaft 1, and the pressing plate 3 exerts pressure on the refractory bricks. When the pressure of the pressing plate 3 reaches the set value, the oil cylinder stops.
[0021] The relaxing action: the manual control bolt adjusting device 11 is in the tightening position. When the pressure sensor 4 checks that the pressure increases, the signal is transmitted to the hydraulic cylinder 5 through the PLC automatic system, the hydraulic cylinder 5 is extended, the manual control bolt adjusting device 11 is deviated forward through the transverse slide rod 9, the connecting rod 2 is forced downward, the force is transmitted to the pressing plate 3 through the supporting shaft 1, the pressure of the pressing plate 3 on the refractory bricks decreases, and the refractory bricks are protected. When the pressure of the pressing plate 3 reaches the set value, the oil cylinder stops.
[0022] The above description is only a specific embodiment of the utility model, and various examples do not limit the essential content of the utility model.
Claims
1. A device for compacting refractory bricks of a smelting furnace body, characterized in that It includes the support arm (7) fixed in the furnace body refractory brick (6) side, the support arm (7) upper end has the transverse support shaft (1), with the support shaft (1) as the fulcrum connects a connecting rod (2), the connecting rod (2) front end movable hook connects a pressing plate (3), the connecting rod (2) rear end slidingly connected on a base (8).
2. The presser device for the ore smelting furnace body refractory brick according to claim 1, characterized in that The pressing plate (3) and the refractory brick contact surface are designed with the wavy anti-skid lines.
3. A press for refractory blocks for furnaces, according to claim 1 or 2, characterised in that The pressing plate (3) and the refractory brick contact surface are designed with the pressure sensor (4), the pressure sensor (4) is connected with the PLC controller control, and the adjusting hydraulic cylinder (5) for driving the connecting rod (2) to move is also provided.
4. The presser device for the mine heat furnace body refractory brick according to claim 3, characterized in that The connecting rod (2) rear end is connected with the transverse slide rod (9), and the transverse slide rod (9) is connected with two sliding shafts (10) on the base (8).