Flue gas sealing device for submerged arc furnace

Abstract

The utility model belongs to the technical field of metallurgical submerged arc furnace equipment, and particularly relates to a smoke sealing device for a submerged arc furnace. Comprising a first positioning ring and second positioning rings, the first positioning ring is fixed to an electrode preformed hole in the top of a holding system or a smoke hood, the second positioning rings are fixed to the bottom of the first positioning ring and are divided into a plurality of parts, and an insulation sealing gasket is arranged at the joint of every two adjacent second positioning rings; a puller bolt is arranged on the second positioning ring, the puller bolt penetrates through the second positioning ring, a baffle is arranged at one end, extending into the second positioning ring, of the puller bolt, and an annular insulating block is arranged on the baffle; the baffles are divided into a primary baffle and a secondary baffle, guide grooves are symmetrically formed in the left side and the right side of the primary baffle, guide bosses are symmetrically arranged on the left side and the right side of the secondary baffle, the guide bosses are inserted into the guide grooves, and annular insulating blocks are arranged on the inner sides of the guide grooves and the inner sides of the guide bosses. The smoke sealing device for the submerged arc furnace is good in sealing performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical submerged arc furnace equipment, and in particular relates to a fume sealing device for a submerged arc furnace. Background Art

[0002] Sealing devices are widely used in submerged arc furnaces and are generally installed at the electrode reserved hole on the top of the smoke hood, in contact with the protective cover of the holding system, and are used to seal the gap between the holding system and the electrode reserved hole on the top of the smoke hood to prevent the smoke in the submerged arc furnace from escaping. The existing sealing devices have the following problems when in use: if there is a slight deviation in the size of the holding system and the electrode reserved hole on the top of the smoke hood during use, the sealing device will have poor sealing performance, and may even damage the electrode reserved hole on the top of the smoke hood, thereby reducing the scope of use of the sealing device.

[0003] Therefore, it is necessary to optimize and improve the above problems, and for this purpose we propose a flue gas sealing device for a submerged arc furnace. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a fume sealing device for a submerged arc furnace to solve the problem that the existing fume sealing device has poor practicality.

[0005] A flue gas sealing device for an electric arc furnace comprises a first positioning ring and a second positioning ring, wherein the first positioning ring is fixed to a holding system or an electrode reserved hole on the top of a smoke hood, and the second positioning ring is fixed to the bottom of the first positioning ring, and the second positioning ring is divided into several parts, and an insulating sealing gasket is provided at the connection between two adjacent second positioning rings; a tightening bolt is provided on the second positioning ring, and the tightening bolt passes through the second positioning ring, and a baffle is provided at one end of the tightening bolt extending into the second positioning ring, and an annular insulating block is provided on the baffle; the baffle is divided into a mother baffle and a child baffle, and guide grooves are symmetrically provided on the left and right sides of the mother baffle, and guide bosses are symmetrically provided on the left and right sides of the child baffle, and the guide bosses are inserted into the guide grooves, and an annular insulating block is provided on the inner sides of the guide grooves and the guide bosses.

[0006] Furthermore, in order to pre-tighten the tensioning bolt at any time, a compression spring is provided between the tensioning bolt and the baffle.

[0007] Furthermore, in order to improve the sealing performance of the first positioning ring, a first arc-shaped groove is provided on the inner side of the first positioning ring, and an insulating sealing ring is provided in the first arc-shaped groove.

[0008] Furthermore, an insulating sealing pad is provided at the bottom of the insulating sealing ring, and a second arc-shaped groove matching with the insulating sealing ring is provided on the insulating sealing pad.

[0009] Furthermore, the first positioning ring is divided into several parts, and an insulating sealing buffer block is provided between two adjacent first positioning rings, and the insulating sealing buffer block is connected to the first positioning ring through a rubber strip.

[0010] In summary, due to the adoption of the above technical solution, the beneficial technical effects of the utility model are:

[0011] A baffle plate of a smoke sealing device for an ore-baffled furnace is divided into a main baffle plate and a sub-baffle plate. The main baffle plate is symmetrically provided with guide grooves on the left and right sides, and the sub-baffle plate is symmetrically provided with guide bosses on the left and right sides. The guide bosses are inserted into the guide grooves, and an annular insulating block is provided on the inner side of the guide grooves and the guide bosses. In the actual installation process, the guide bosses are inserted into the guide grooves. This structure enables an overlapping area to exist between the main baffle plate and the sub-baffle plate, effectively solving the problem of gaps between adjacent annular insulating blocks and solving the problem of poor sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model.

[0013] Figure 2 For this utility model Figure 1 Top view of the .

[0014] Figure 3 For this utility model Figure 1 Schematic diagram of the cross section along the AA direction.

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 5 It is a schematic diagram of the connection structure between the main baffle and the sub-baffle 502 of the present invention.

[0017] In the figure: a first positioning ring 1, a second positioning ring 2, an insulating sealing buffer block 3, a rubber strip 4, a baffle 5, a mother baffle 501, a sub-baffle 502, a guide groove 503, a guide boss 504, an annular insulating block 6, a tightening bolt 7, a compression spring 8, a first arc-shaped groove 10, an insulating sealing ring 11, an insulating sealing gasket 9, a second arc-shaped groove 12, and an insulating sealing gasket 13. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0019] Example 1

[0020] In this embodiment, Figure 1-5As shown, a flue gas sealing device for an ore-bearing furnace comprises a first positioning ring 1 and a second positioning ring 2. The first positioning ring 1 is fixed to a holding system or a reserved hole for an electrode on the top of a smoke hood, and the second positioning ring 2 is fixed to the bottom of the first positioning ring 1. The second positioning ring 2 is divided into several parts, and an insulating sealing gasket 13 is provided at the connection between two adjacent second positioning rings 2; the first positioning ring 1 is divided into several parts, and an insulating sealing buffer block 3 is provided between two adjacent first positioning rings 1, and the insulating sealing buffer block 3 is connected to the first positioning ring 1 through a rubber strip 4; a tightening bolt 7 is provided on the second positioning ring 2, and the tightening bolt 7 passes through the second positioning ring 2 and extends into the second positioning ring 2. A baffle plate 5 is provided at one end, and an annular insulating block 6 is provided on the baffle plate 5. In the actual installation process, since the baffle plate 5 is formed as a whole or divided into several small parts, but no transition mechanism is provided between these parts, gaps will appear between adjacent annular insulating blocks 6 during the sealing process, resulting in poor sealing. For this reason, the baffle plate 5 is divided into a mother baffle plate 501 and a child baffle plate 502. The mother baffle plate 501 is symmetrically provided with guide grooves 503 on the left and right sides, and the child baffle plate 502 is symmetrically provided with guide bosses 504 on the left and right sides. The guide bosses 504 are inserted into the guide grooves 503, and annular insulating blocks 6 are provided on the inner sides of the guide grooves 503 and the guide bosses 504.

[0021] Example 2

[0022] In this embodiment, Figure 3 As shown, in order to pre-tighten the tensioning bolt 7 at any time, a compression spring 8 is provided between the tensioning bolt 7 and the baffle 5 .

[0023] Example 3

[0024] In this embodiment, Figure 3 As shown, in order to improve the sealing performance of the first positioning ring 1, a first arc-shaped groove 10 is provided on the inner side of the first positioning ring 1, and an insulating sealing ring 11 is provided in the first arc-shaped groove 10. An insulating sealing pad 9 is provided at the bottom of the insulating sealing ring 11, and a second arc-shaped groove 12 matching the insulating sealing ring 11 is provided on the insulating sealing pad 9.

[0025] The above description is a preferred embodiment of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A smoke sealing device for a submerged arc furnace, comprising a first positioning ring (1) and a second positioning ring (2), wherein the first positioning ring (1) is fixed to a holding system or an electrode reserved hole at the top of a smoke hood, and the second positioning ring (2) is fixed to the bottom of the first positioning ring (1); characterized in that: The second positioning ring (2) is divided into a plurality of parts, and an insulating sealing gasket (13) is provided at the connection between two adjacent second positioning rings (2); the first positioning ring (1) is divided into a plurality of parts, and an insulating sealing buffer block (3) is provided between two adjacent first positioning rings (1), and the insulating sealing buffer block (3) is connected to the first positioning ring (1) through a rubber strip (4); a tightening bolt (7) is provided on the second positioning ring (2), and the tightening bolt (7) passes through the second positioning ring (2), and the tightening bolt (7) extends into the second positioning ring (2). A baffle (5) is provided at one end of the positioning ring (2), and an annular insulating block (6) is provided on the baffle (5); the baffle (5) is divided into a main baffle (501) and a sub-baffle (502); guide grooves (503) are symmetrically provided on the left and right sides of the main baffle (501), and guide bosses (504) are symmetrically provided on the left and right sides of the sub-baffle (502); the guide bosses (504) are inserted into the guide grooves (503), and an annular insulating block (6) is provided on the inner sides of the guide grooves (503) and the guide bosses (504).

2. The smoke sealing device for a submerged arc furnace according to claim 1, characterized in that: A compression spring (8) is provided between the tightening bolt (7) and the baffle (5).

3. The smoke sealing device for a submerged arc furnace according to claim 1, characterized in that: A first arc-shaped groove (10) is provided on the inner side of the first positioning ring (1), and an insulating sealing ring (11) is provided in the first arc-shaped groove (10).

4. The smoke sealing device for a submerged arc furnace according to claim 3, characterized in that: An insulating sealing pad (9) is provided at the bottom of the insulating sealing ring (11), and a second arc-shaped groove (12) matching with the insulating sealing ring (11) is provided on the insulating sealing pad (9).

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