Anti-impact automatic adjusting type hanging device for submerged arc furnace
By introducing an insulated connection base and a buffer device into the suspension device of the electric arc furnace, the insulation deficiencies and maintenance problems of traditional suspension devices are solved, achieving higher safety and service life.
Patent Information
- Application Number
- CN202520125162.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Traditional electric arc furnace hanging devices have insufficient insulation performance, leading to safety hazards. They are also prone to damage when the furnace cover floats, making maintenance difficult and unable to effectively mitigate radial impact forces.
An automatic adjustable suspension device for shock protection of electric arc furnaces was designed, comprising a suspension rod, a suspension insulating connection intermediate seat, a suspension insulating connection base, and a suspension buffer device. It adopts flange connection and insulating plate to increase insulation performance and mitigates impact force through suspension buffer device.
It improves the insulation strength and safety of the hanging device, reduces maintenance difficulty, reduces safety hazards, and enhances the service life and functional flexibility of the hanging device.
Smart Images
Figure CN223678240U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to smelting equipment technical field, namely a kind of automatic regulation type hanging device of anti-impact of submerged arc furnace. BACKGROUND
[0002] In the design process of the past traditional submerged arc furnace, the hanging device of electric furnace equipment can meet the requirements of equipment tensile strength in hanging design specification and material selection with the adjustment of equipment specification, and the basic structure has no big change. With the more and more extensive use of submerged arc furnace in actual production, the variety of raw materials smelted by submerged arc furnace is gradually diversified from single variety. At the same time, the construction scale of the past traditional electric furnace is small, and the control degree of problems and risks in actual production process is not high. With the continuous increase of project construction scale, the requirements and conditions of smelting variety are gradually improved, and the overall performance of equipment is facing great challenges. The phenomenon of furnace cover floating is common. Referring to Figure 4 、 5 , the traditional hanging device is mainly composed of hanging connection base, hanging insulation connection middle seat and boom, the hanging connection base has no insulation performance, and its shortcomings are that the lower part of hanging base is connected with furnace cover. If the insulation of furnace cover equipment itself fails, the current of furnace cover itself will be conducted to the connection base, so that the hanging connection base is electrified and is in electrified state for a long time. The boom adopts straight rod and is directly lapped on the upper platform steel beam, which cannot be adjusted and reduces the difficulty of later maintenance. The hanging connection base has no insulation pad, and its shortcomings are that 1, when the furnace cover insulation fails to cause the hanging connection base to be electrified, the current cannot be released, and the hanging base will be in electrified state, which will cause safety hazard to personnel when replacing connecting piece or furnace cover end blowing maintenance in later period; 2, according to the traditional structure, the connection base is connected through ear plate and pin shaft, and is rigidly welded with furnace cover, and the base has no insulation. When the insulation of hanging middle seat is defective, the whole hanging device will be electrified and conduct electricity to the upper connection platform. The platform is the operation area of production personnel, and the platform will be electrified, which will cause great safety hazard to personnel and does not meet the safety operation specification. 3, the traditional base adopts the connection mode of ear plate and pin shaft, and the ear plate is deformed to different degrees in production process due to the floating of furnace cover and the rigid connection of boom upper part, which causes certain difficulty in later maintenance replacement. If the deformation degree is too large, only cutting and reprocessing can be adopted, and the maintenance workload and cost will be increased. In actual production process of submerged arc furnace, the furnace body refractory floats due to the change of furnace condition, so that the electric furnace cover 8 supported by refractory floats synchronously, the radial impact force generated thereby causes different degrees of damage of boom 3, connecting flange and insulation piece and other related problems, which need to be solved urgently. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at above-mentioned insufficient and provides a kind of automatic regulation type hanging device of impact protection of ore-heating furnace, which improves service life of lifting equipment, reduces maintenance cost, realizes radial adjustment of hanging device, enhances insulation strength, and the structure is more convenient to maintain and replace.
[0004] The technical solution of the utility model is: an automatic regulation type hanging device of impact protection of ore-heating furnace, which is sequentially connected with a boom, a hanging insulation connecting middle seat and a hanging connecting base, and the hanging connecting base is connected with the furnace cover of the electric furnace.The upper end of the boom is connected with a hanging connecting top seat, and the hanging connecting top seat is connected with a top seat connecting trunnion and a top seat connecting ear plate through the top seat connecting trunnion.The boom is inserted into the hanging connecting top seat, and there is a hanging buffer device between the boom and the hanging connecting top seat.The hanging buffer device is composed of a buffer box, an adjustable disc spring sleeved on the boom in the buffer box, a disc spring cover pressed on the adjustable disc spring and a buffer sleeve.The hanging connecting base is changed into a flange connection, and there is an insulation plate between the flange and the connecting plate.
[0005] The utility model has the advantages that: 1. the hanging connecting base is structurally optimized, changed into a hanging insulation connecting base, an insulation is added, the insulation performance is enhanced, the safety factor of the connecting equipment is better improved, the safety risk is reduced, and the installation, disassembly and other maintenance are convenient.2. the hanging buffer device is composed of a buffer box, an adjustable disc spring, a disc spring cover and a buffer sleeve, by setting the hanging buffer device, the use is safe, the stroke of the boom is adjustable, the damage of the radial impact force to the hanging device can be effectively alleviated during the floating process of the equipment, the overall carrying capacity of the hanging is improved by using the carrying performance of the disc spring itself, and the functional use flexibility is higher.3. the hanging top seat is matched with an ear plate and a connecting pin, instead of the previous rigid lap joint of the boom, the boom does not need to be cut during the later maintenance, and the disassembly and replacement are more convenient when the disc spring function fails and needs to be replaced.4. the use effect is good, the safety factor is high, and the safety hidden danger and secondary investment in the later stage are greatly reduced.
[0006] The embodiments of the utility model will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0007] Figure 1 is the structural diagram of the utility model.
[0008] Figure 2 is Figure 1 is the left view structural diagram.
[0009] Figure 3 is the partial enlarged structural diagram of the hanging connecting top seat.
[0010] Figure 4 is the structural diagram of the hanging device before improvement.
[0011] Figure 5 isFigure 3 Left view structural diagram. DETAILED DESCRIPTION
[0012] Referring to Figure 1 -5, the names of the components are as follows: hanging insulation connecting base 1, hanging insulation connecting middle base 2, hanging rod 3, hanging buffer device 4, hanging connecting top base 5, top base connecting ear plate 6, top base connecting ear shaft 7, electric furnace cover 8, buffer box 9, adjustable disc spring 10, disc spring cover 11, buffer sleeve 12, flange 13, connecting plate 14, insulation plate 15, hanging connecting base 16.
[0013] Referring to Figure 1 、 2 , 3, an impact-proof automatic adjusting type hanging device for an electric furnace, comprising a hanging connecting top base 5, a hanging rod 3, a hanging insulation connecting middle base 2, and a hanging insulation connecting base 1 connected in sequence, wherein the hanging insulation connecting base 1 is connected with an electric furnace cover 8. The hanging connecting top base 5 is hingedly connected with a top base connecting ear plate 6 through a top base connecting ear shaft 7. The upper end of the hanging rod 3 is inserted into the hanging connecting top base 5, and there is a hanging buffer device 4 between the hanging rod 3 and the hanging connecting top base 5. The hanging buffer device 4 is composed of a buffer box 9, an adjustable disc spring 10 sleeved on the hanging rod 3 in the buffer box 9, a disc spring cover 11 pressed on the adjustable disc spring 10, and a buffer sleeve 12, wherein the buffer sleeve 12 is sleeved on the hanging rod 3 and connected with the disc spring cover 11. The hanging buffer device 4 and the detachable hanging connecting top base 5 are added to replace the traditional hanging rod 3, so as to finally achieve the purpose of adjustment and reduce the difficulty of later maintenance. The hanging insulation connecting base 1 is connected by a flange 13, which has the advantages that the deformation of the connecting part is small through the flange connection form, the connecting part is connected by bolts and other fasteners, the insulation part has a simple structure, and the installation and disassembly are convenient, thereby reducing the difficulty of production and maintenance. There is an insulation plate 15 between the flange 13 and a connecting plate 14, so that the hanging insulation connecting base 1 has an insulation function at this position, and the insulation performance of the hanging is further improved.
[0014] Use method: when the production process, due to the different furnace conditions lead to the floating of refractory in the furnace, the electric furnace cover 8 above the refractory is floated together, due to the hanging insulation connection base 1, hanging insulation connection middle seat 2, hanging rod 3 connection after the integral state, hanging connection top seat 5 and hanging buffer device 4 are integrated, two parts are connected, once the electric furnace cover 8 equipment floats as a whole, the hanging rod 3 component moves upward together, when the furnace condition is stable, the floating phenomenon gradually disappears, the hanging rod 3 component will fall back, because the equipment carried by the hanging part below is very heavy, the back fall will cause considerable impact, in order to reduce the damage of the back fall of the furnace cover equipment to the hanging device, through the adjustment and bearing capacity of the disc spring itself, the buffer stress is released, the hanging equipment is protected, the adjustable space is set between the hanging rod and the buffer box of the hanging device, the reasonable adjustable distance is set according to the floating condition of different furnace, so as to meet the equipment risk caused by the actual production disadvantages.
[0015] The above description is only a specific embodiment of the present application, and various examples do not constitute a limitation on the essential content of the present application.
Claims
1. A kind of impact-proof automatic regulation type hanging device of ore-heating furnace, including sequentially connected boom (3), hanging insulation connection intermediate seat (2), hanging connection base (16), hanging connection base (16) is connected with electric furnace cover (8), it is characterized in that The upper end of the suspender (3) is connected with a hanging connection top base (5), the hanging connection top base (5) is connected with a top base connecting ear plate (6) through a top base connecting ear shaft (7); the suspender (3) is inserted into the hanging connection top base (5), and there is a hanging buffer device (4) between the suspender (3) and the hanging connection top base (5); the hanging buffer device (4) is composed of a buffer box (9), an adjustable disc spring (10) sleeved on the suspender (3) in the buffer box (9), a disc spring cover (11) pressed on the adjustable disc spring (10) and a buffer sleeve (12).
2. A surge-proof, self-regulating type suspension device for a submerged-arc furnace as defined in claim 1, characterized in that The hanging connection bottom base (16) is changed into a flange (13) connection, and there is an insulating plate (15) between the flange (13) and a connecting plate (14).