Electrode post platform composite sealing device

Abstract

The utility model provides a kind of electrode column platform composite sealing device, including annular wooden base, it is characterized by: annular support seat is fixed on wooden base, the support seat includes annular support disc and conical support sleeve, support disc and support sleeve are two-body connection;The support disc is fixed on wooden base by circumferentially distributed wooden screw;A plurality of composite sealing sheets are uniformly distributed on the support sleeve in the circumferential direction, each composite sealing sheet is fixed on the support seat by two bolts vertically penetrating the support sleeve, and the adjacent two composite sealing sheets are overlapped with each other;The inner angle of composite sealing sheet and horizontal plane is 60 degrees, and the upper end is close to the outer edge of the electrode column.Affirmative effect is: good sealing and insulation effect can effectively avoid electrode column welding slag to drop to the lower platform, well protect the brake shoe below, so that the working environment of lower layer has greater degree of improvement;More conducive to electrochemical reaction, greatly reduce product power consumption, improve furnace capacity.

Description

Technical Field

[0001] This utility model relates to a sealing device, and more particularly to a composite sealing device for an electrode post platform. Background Technology

[0002] The sealing platform for the electrode column of the electric arc furnace is located on the fourth floor of the furnace building. Below the platform is the electrode pressing and releasing device, which consists of four vulcanized rubber brake shoes. These shoes tightly hold the electrode column, causing it to rise or fall according to the production process. Above the platform is the area for welding replacement electrode columns after use. Because the electrode columns are electrified, a certain safety distance must be maintained between them and the platform when they pass through. First, during welding replacement, welding slag can fall through the gap between the electrode column and the platform onto the electrode pressing and releasing device below, potentially damaging the brake shoes and affecting equipment operation. Second, workers operating the equipment are located below, and falling welding slag poses a safety threat. Furthermore, this safety distance between the electrode column and the platform allows tools and items from the work area above to easily slide down, creating a falling object hazard. Therefore, it is necessary to seal the gap where the electrode column passes through the platform.

[0003] Currently, domestic submerged arc furnace electrode columns all use a single-layer sealing structure, which seals the gap where the electrode column passes through the platform by using a single layer of rubber sheet and clamping it between two steel plates. This structure is prone to gaps under thermal cycling conditions, and the sealing material swells and fails due to the penetration of acidic / alkaline media. Axial displacement of the electrode column also leads to wear on the sealing surface, and it cannot compensate for radial gaps and axial displacement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a composite sealing device for an electrode post platform with good sealing and insulation effect and long service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A composite sealing device for an electrode post platform includes an annular wooden base, on which an annular support seat is fixed. The support seat includes an annular support plate and a conical support sleeve that are fixedly connected to each other. The support plate and the support sleeve are both integrally connected so as to be fitted around the electrode post. The support plate is fixed to the wooden base by wood screws evenly distributed around the circumference for easy disassembly.

[0007] Several composite sealing plates are evenly distributed along the circumference of the support sleeve. Each composite sealing plate is fixed to the support base by two bolts that penetrate the support sleeve vertically, and two adjacent composite sealing plates overlap each other. The composite sealing plate has an inner angle of 60 degrees with the horizontal plane and its upper end is tightly attached to the outer edge of the electrode post.

[0008] As a further preferred embodiment, the composite sealing sheet is made of PTFE, graphite spiral wound gasket and perfluoroether rubber using a glue-free lamination process, and consists of a PTFE layer, a graphite spiral wound gasket layer and a perfluoroether rubber layer from the inside out, in order to improve the sealing and insulation effect.

[0009] As a further preferred embodiment, the composite sealing sheet has an outwardly turned flange at its upper end, which is fixed by a pull rivet to improve the sealing effect.

[0010] As a further preferred option, the wooden chassis is composed of two parts.

[0011] As a further preferred embodiment, the composite sealing sheet comprises 20 sheets, with each bolt passing through two adjacent composite sealing sheets.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This sealing device can seal the electrode column and the upper platform, providing good sealing and insulation. It can effectively prevent welding slag from falling onto the lower platform during electrode column welding, and can effectively protect the brake shoes below the platform, thus greatly improving the working environment of the lower working space. It is also more conducive to the electrochemical reaction, significantly reducing product power consumption and increasing the electric furnace capacity.

[0014] 2. This sealing device provides more effective and stable insulation protection between the electrode column and the upper platform, ensuring safe production of the electric furnace and greatly improving the safety of workers operating below.

[0015] 3. The structure is simple, disassembly is convenient, and the installation and disassembly time is short; and it will not affect the continuous normal operation of the electric arc furnace. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 yes Figure 1 Top view.

[0018] Figure 3 yes Figure 2 AA sectional view.

[0019] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0020] In the diagram: 1. Wooden chassis, 2. Support base, 201. Support plate, 202. Bolt, 3. Composite sealing sheet, 4. PTFE layer, 401. Graphite spiral wound pad, 402. Perfluoroether rubber layer, 403. Electrode post, 5. Blind rivet, 6. Washer, 7. Wood screw, 8. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, this utility model relates to a composite sealing device for an electrode post platform, comprising an annular wooden base 1. The wooden base 1 is composed of two parts joined together, and the thickness of the plate is 40-50mm. An annular support seat 2 is fixed on the wooden base 1. The support seat 2 includes an annular support plate 201 and a conical support sleeve 202 fixedly connected to each other. The support sleeve 202 is welded and fixed to the inner hole of the support plate 201. Both the support plate 201 and the support sleeve 202 are welded together to fit around the electrode post 5. The support plate 201 is fixed to the wooden base 1 by a plurality of wood screws 8 evenly distributed around its circumference for easy disassembly.

[0023] Several composite sealing plates 4 are evenly distributed and fixed along the circumferential direction on the outer edge of the support sleeve 202. Each composite sealing plate 4 is fixed to the support base 2 by two bolts 3 and a washer 7 that penetrate the support sleeve 202 vertically, and the edges of two adjacent composite sealing plates 4 overlap each other. The composite sealing plate 4 has an inner angle of 60 degrees with the horizontal plane and its upper end is tightly attached to the outer edge of the electrode post 5. The right side of each composite sealing plate 4 protrudes a rectangular pressing edge from the left side to facilitate overlap.

[0024] The composite sealing sheet 4 is made of PTFE, graphite spiral wound gasket, and perfluoroether rubber using a glue-free lamination process, and consists of a PTFE layer 401, a graphite spiral wound gasket layer 402, and a perfluoroether rubber layer 403 from the inside out. The high-temperature resistance of the inner PTFE layer 401 and graphite spiral wound gasket layer 402 complements the high insulation of the perfluoroether rubber layer 403. In environments with high-temperature, high-pressure steam or strong chemical oxidants, the PTFE layer provides chemical inertness, while the perfluoroether rubber layer enhances creep resistance, provides elastic compensation, and reduces stress concentration. Simultaneously, the low friction and self-lubrication of the PTFE layer combined with the wear resistance of the perfluoroether rubber layer provide good sealing and guiding functions for the reciprocating electrode post.

[0025] The composite sealing sheet 4 has an outwardly overlapping flange at its upper end, which is fixed by a pop rivet 6 to improve the strength and wear resistance of the composite sealing sheet 4 and enhance the sealing effect. There are 20 composite sealing sheets 4, and each bolt passes through two adjacent composite sealing sheets 4.

[0026] The installation steps are as follows:

[0027] 1. Place the wooden base 1 on the platform of the electrode post 5 and position it around the electrode post 5. Place the support base 2 on the wooden base 1. After the two parts of the support plate 201 and the support sleeve 202 are connected by welding, fix the support plate 201 to the wooden base 1 with wood screws 8.

[0028] 2. Place a composite sealing sheet 4 on the support base 2. This is the first composite sealing sheet 4. Align the two round holes at the bottom of the first composite sealing sheet 4 with any two adjacent bolts on the support base 2. The two bolts do not need to be tightened.

[0029] 3. Take another composite sealing plate 4, which is the second composite sealing plate 4. Align the left hole of the two holes at the bottom of the second composite sealing plate 4 with the bolt on the right side of the first composite sealing plate 4. At this time, the left hole at the bottom of the second composite sealing plate 4 coincides with the right hole at the bottom of the first composite sealing plate 4. Align the right hole of the two holes at the bottom of the second composite sealing plate 4 with the bolt adjacent to the right bolt on the first composite sealing plate 4.

[0030] 4. At this point, tighten the right bolt of the two bolts at the bottom of the first composite sealing sheet 4 using the washer and nut. This bolt passes through the round hole on the right side of the bottom of the first composite sealing sheet 4 and the round hole on the left side of the bottom of the second composite sealing sheet 4. The bolt on the left side of the bottom of the first composite sealing sheet 4 still does not need to be tightened.

[0031] 5. Take the third composite sealing piece 4 and repeat the above hole alignment steps. That is, align the lower left hole of the third composite sealing piece 4 with the lower right bolt of the second composite sealing piece 4, and align the lower right round hole of the third composite sealing piece 4 with the right bolt adjacent to the lower right bolt of the second composite sealing piece 4. At this time, the lower right round hole of the second composite sealing piece 4 coincides with the lower left round hole of the third composite sealing piece 4. Then tighten the bolt on the right side of the second composite sealing piece 4 with the large washer and nut. The bolt passes through both the lower right round hole of the second composite sealing piece 4 and the lower left round hole of the third composite sealing piece 4.

[0032] 6. Next, take the fourth to twentieth composite sealing pieces 4 in sequence and repeat the above steps, tightening the nuts one by one. After tightening the bolt corresponding to the lower left round hole of the twentieth composite sealing piece 4, pull the lower left round hole of the first composite sealing piece 4 out of the bolt. Align the lower right round hole of the twentieth composite sealing piece 4 with the bolt corresponding to the lower left round hole of the first composite sealing piece 4. Then, put the lower left round hole of the first composite sealing piece 4 back onto the bolt. At this point, the lower right round hole of the twentieth composite sealing piece 4 and the lower left round hole of the first composite sealing piece 4 will coincide. Tighten the bolt with a large washer and a nut.

[0033] 7. At this time, all the bolts on the support base 2 are tightened, the composite sealing sheet 4 forms a closed loop and its upper end is tightly attached to the outer edge of the electrode post 5, enclosing the electrode post 5.

[0034] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A composite sealing device for an electrode post platform, comprising an annular wooden chassis, characterized in that: An annular support base is fixed on a wooden chassis. The support base includes an annular support plate and a conical support sleeve that are fixedly connected to each other. Both the support plate and the support sleeve are made of two parts connected together so that they can be fitted around the electrode post. The support plate is fixed to the wooden chassis by wood screws evenly distributed around the circumference so that it can be disassembled. Several composite sealing plates are evenly distributed along the circumference of the support sleeve. Each composite sealing plate is fixed to the support base by two bolts that penetrate the support sleeve vertically, and two adjacent composite sealing plates overlap each other. The composite sealing plate has an inner angle of 60 degrees with the horizontal plane and its upper end is tightly attached to the outer edge of the electrode post.

2. The electrode post platform composite sealing device according to claim 1, characterized in that: The composite sealing sheet is made of PTFE, graphite spiral wound gasket and perfluoroether rubber using a glue-free lamination process, and consists of a PTFE layer, a graphite spiral wound gasket layer and a perfluoroether rubber layer from the inside out.

3. The electrode post platform composite sealing device according to claim 1 or 2, characterized in that: The composite sealing sheet has an outward-curved edge at the upper end and is fixed by a pull rivet to improve the sealing effect.

4. The electrode post platform composite sealing device according to claim 1, characterized in that: The wooden chassis is composed of two parts.

5. The electrode post platform composite sealing device according to claim 3, characterized in that: The composite sealing sheet consists of 20 pieces, and each bolt passes through two adjacent composite sealing sheets.

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