Clamping cylinder type insulating suspender for submerged arc furnace electrode holder

Abstract

The utility model belongs to the technical field of iron alloy smelting equipment, and particularly relates to a clamping cylinder type insulating suspender for an electrode holder of a submerged arc furnace. The device comprises a split type stainless steel clamping cylinder, the upper end and the lower end of the split type stainless steel clamping cylinder are respectively provided with a through hole for an upper suspender and a lower suspender to pass through, split type insulating sleeves are lined in the through holes, and the split type insulating sleeves are provided with protruding edges clamped on the peripheral end faces in the through holes; a fixing rod disc is welded to the butt joint end of the upper hanging rod and the lower hanging rod. The split type stainless steel clamping cylinder is transversely locked and connected through a bolt, and the bolt is sleeved with an insulating tube on a rod body in the split type stainless steel clamping cylinder. And a bolt positioning cotter pin is mounted at one end of the bolt, which is transversely locked and connected. Hanging and bearing are achieved in the mode that the upper hanging rod, the lower hanging rod and the rod disc are clamped and fixed through the split type stainless steel clamping barrels, and insulation between the hanging rods is achieved through the split type insulating sleeves. The mode has the advantages of being high in hanging bearing capacity, reliable in insulation performance, compact in structure and convenient to install and maintain.

Description

Technical Field

[0001] This utility model belongs to the technical field of ferroalloy smelting equipment, specifically a clamp-type insulating rod for an electrode holder in a submerged arc furnace. Background Technology

[0002] Electrode holders in ferroalloy smelting furnaces are crucial components, providing power to the electrode terminals. They are primarily categorized into copper-brick pressure ring holders and combined holders, with the copper-brick pressure ring holder being widely used due to its high conductivity and simple, reliable structure.

[0003] The copper tile pressure ring holder consists of a copper tile, pressure ring, bottom ring, conductive copper tube, lower holder cylinder, insulating hanger, and water-cooled protective screen. The insulating hanger, during operation, must withstand tensile loads, suspend the copper tile, pressure ring, and bottom ring, while simultaneously providing effective insulation from the lower holder cylinder. Based on current insulating hanger designs, there are two types: a hanger rod with insulating flange connection and a hanger rod with double-clamp insulating connection (see...). Figure 3 -6) Problems found in application: 1. For the flange connection method of the lifting rod insulation, carbon slag particles and dust easily accumulate on the flange surface, making it easy for the flange bolts to become electrically conductive with the lifting rod, posing a potential installation hazard. 2. Both the flange connection method and the double-clamp insulation connection method of the lifting rod have excessively large structural dimensions at the connection position, resulting in insufficient installation clearance with other components, leading to contact and electrical conductive problems when components vibrate and deform. 3. In the double-clamp insulation connection method of the lifting rod, since the insulating tube at the bolt bearing position participates in the stress, it will lose its insulating function after the insulating component is carbonized or damaged at high temperature, resulting in poor reliability. 4. During the high-temperature smelting process, the insulating components often carbonize or are damaged. Both of the above methods, due to the limited installation space between components, present difficulties in maintenance and replacement. Utility Model Content

[0004] The purpose of this utility model is to provide a clamp-type insulating rod for an electrode holder in a submerged arc furnace that is compact in structure, dustproof, safe and reliable, and easy to maintain and replace, in order to address the above-mentioned shortcomings.

[0005] The present invention provides a clamp-type insulating rod for an electrode holder in a submerged arc furnace. The rod is characterized by comprising a split stainless steel clamp, with through holes at both the upper and lower ends for the upper and lower rods to pass through. The through holes are lined with split insulating sleeves, each sleeve having a raised edge that engages with the surrounding end face within the through holes. Fixed rod discs are welded to the mating ends of the upper and lower rods. The split stainless steel clamp is connected by a bolted transverse locking mechanism, with the bolts fitted onto the rod body within the clamp, which is fitted with an insulating tube. A bolt positioning cotter pin is installed at one end of the bolted transverse locking connection.

[0006] The connection points of the insulating rods are secured by separate insulating sleeves and separate stainless steel clamps to hold and fix the upper and lower rods and rod discs, thereby achieving the device's hanging load-bearing capacity and hanging insulation capacity.

[0007] The load-bearing capacity of the suspension system is achieved through the connection between the end faces of the rod discs welded to the upper and lower suspension rods and the end faces of the inner shaft platforms of the split stainless steel clamps, exceeding the capacity of bolts. Simultaneously, the split insulating sleeves clamped between the suspension rods and the clamps provide insulation, resulting in a more reliable, flat-plane insulation system that is less prone to damage. The split stainless steel clamps are joined together by bolts, which carry the internal insulating tubes during installation to prevent contact between the upper and lower suspension rods and the bolts after movement, further enhancing the reliability of insulation between the upper and lower suspension rods. The upper outer end face of the split stainless steel clamps is designed as a conical surface to prevent dust accumulation and insulation failure.

[0008] The advantages of this utility model are:

[0009] 1. The insulated connection position is cylindrical and the structural size is relatively small, which can increase the installation distance between the various components of the gripper and further ensure the insulation between the components.

[0010] 2. The upper outer end face of the split stainless steel clamp is designed as a conical surface, which solves the problems of dust accumulation and insulation failure in the components.

[0011] 3. The flange end face is used to bear tensile loads at the connection position, which has a stronger load-bearing capacity than bolts.

[0012] 4. The installation design of the split insulating sleeve and the split stainless steel clamp makes maintenance and replacement easier and more convenient.

[0013] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a simplified structural diagram of the present invention.

[0015] Figure 2 yes Figure 1 Top view of the simplified structure.

[0016] Figure 3 This is a simplified diagram of a flange-type insulated hanger structure in the existing technology.

[0017] Figure 4 yes Figure 3 Top view of the simplified structure.

[0018] Figure 5 This is a simplified diagram of a double-clamp insulated suspension structure in the existing technology.

[0019] Figure 6 yes Figure 5 Simplified structural diagram viewed from the left along the central section. Detailed Implementation

[0020] See Figure 1 , 2 The component names are as follows: 1. Upper suspension rod, 2. Split insulating sleeve, 3. Split stainless steel clamp, 4. Rod disc, 5. Bolt, 6. Insulating tube, 7. Lower suspension rod, 8. Protruding edge, 9. Bolt positioning cotter pin.

[0021] See Figure 1 , 2 A type of insulating rod for an electrode holder in a submerged arc furnace includes a split stainless steel clamp 3. The split stainless steel clamp 3 has through holes at its upper and lower ends for the upper rod 1 and lower rod 7 to pass through. A split insulating sleeve 2 is lined inside the through holes, and the split insulating sleeve 2 has a raised edge 8 that engages with the circumferential end face within the through holes. A fixing rod disc 4 is welded to the mating ends of the upper rod 1 and lower rod 7. The welding position uses a V-shaped full weld to ensure the load-bearing capacity of the weld joint. The fixing rod disc 4 is pressed against the raised edge 8. The split stainless steel clamp 3 is laterally locked by bolts 5, and a bolt positioning cotter pin 9 is installed at one end of the bolt 5. An insulating tube 6 is fitted onto the rod body inside the split stainless steel clamp 3.

[0022] After positioning, install the split insulating sleeve 2 and the split stainless steel clamp 3 together on the end face of the fixed rod plate 4. When installing the split stainless steel clamp 3, simultaneously install the bolt 5 and the insulating tube 6 at the middle connecting hole position of the split stainless steel clamp. After all parts are positioned, tighten the bolt 5 and install the bolt positioning cotter pin to prevent the bolt from loosening and falling off.

[0023] This device is a connecting component installed between the copper tile hanger and the pressure ring hanger of the handle. It serves both to connect and support the hanger and to insulate it.

[0024] The above description is merely a specific embodiment of this utility model, and the various examples do not constitute a limitation on the substantive content of this utility model.

Claims

1. A sleeve-type insulating rod for an electrode holder in a submerged arc furnace, characterized in that... It includes a split stainless steel clamp (3), with a through hole at the upper and lower ends for the upper rod (1) and the lower rod (7) to pass through. The through hole is lined with a split insulating sleeve (2), which has a protruding edge (8) that fits into the periphery of the through hole. A fixing rod plate (4) is welded to the mating end of the upper rod (1) and the lower rod (7). The split stainless steel clamp (3) is connected by a bolt (5) for transverse locking. The bolt (5) has an insulating tube (6) fitted on the rod inside the split stainless steel clamp (3).

2. A sleeve-type insulating rod for an electrode holder in a submerged arc furnace according to claim 1, characterized in that... One end of the bolt (5) with the transverse locking connection is equipped with a bolt positioning cotter pin (9).

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