Adjustable refractory furnace cover

Abstract

The utility model discloses an adjustable refractory material furnace cover which comprises a large furnace cover, a small furnace cover and a furnace cover adjusting assembly installed on the large furnace cover and used for adjusting the position of the small furnace cover, an electrode hole used for installing an electrode is formed in the small furnace cover, and a sealing adjusting assembly matched with the electrode for sealing adjustment is arranged on the small furnace cover. According to the technical scheme, the small furnace cover can be adjusted in the radial direction through the furnace cover adjusting assembly, meanwhile, the gap between the electrode and the electrode hole can be adjusted through the sealing adjusting assembly when the electrode is installed, the overall structure is simple and reliable, adjustment is convenient, furnace pressure maintenance is facilitated, and smoke overflow pollution is reduced.

Description

Technical Field

[0001] The invention relates to the field of metallurgy, and in particular to an adjustable refractory furnace cover. Background Art

[0002] At present, the small refractory furnace cover used in the water-cooled furnace cover of domestic electric arc furnace and LF refining furnace is connected to the large furnace cover mounting seat with a conical surface. The small refractory furnace cover can only rotate in a circle and cannot translate radially. Moreover, the electrode hole size is a fixed value and cannot be adjusted. In order to compensate for the cumulative errors in the manufacture and installation of the water-cooled furnace cover, the furnace cover lifting device, and the electrode lifting device, the electrode hole of the small refractory furnace cover is made larger, causing the smoke in the furnace to overflow. Especially for the double-station refining furnace with rotating electrode cross arms, the adjustment of the electrode pole center circle during on-site debugging is time-consuming and laborious, and even the adjustment of the electrode column and the conductive cross arm cannot meet the special requirements of the electrode for the pole center circle at the two heating stations. Therefore, it is urgently necessary to improve the structure of the existing refractory furnace cover to meet the use requirements.

[0003] Therefore, it is necessary to provide an adjustable refractory furnace cover to solve the above problems. Summary of the invention

[0004] In view of this, the adjustable refractory furnace cover of the present technical solution can perform radial adjustment on the small furnace cover through the furnace cover adjustment component, and at the same time, the gap between the electrode and the electrode hole can be adjusted during electrode installation through the sealing adjustment component. The overall structure is simple and reliable, and the adjustment is convenient, which is conducive to maintaining furnace pressure and reducing smoke overflow pollution.

[0005] An adjustable refractory furnace cover comprises a large furnace cover, a small furnace cover, and a furnace cover adjustment component installed on the large furnace cover for adjusting the position of the small furnace cover, wherein the small furnace cover is provided with electrode holes for installing electrodes, and the small furnace cover is provided with a sealing adjustment component for cooperating with the electrodes for sealing adjustment.

[0006] Furthermore, the sealing adjustment assembly includes a sealing adjustment block installed on the small furnace cover and a locking rod, and the locking rod is used to lock the sealing adjustment block to the small furnace cover.

[0007] Furthermore, the sealing adjustment block is composed of multiple blocks, which are evenly distributed in the circumferential direction of the electrode hole opening. The sealing adjustment block is an arc-shaped structure as a whole, and a positioning portion for positioning and installation is formed in the middle of the sealing adjustment block.

[0008] Furthermore, a strip-shaped hole is provided on the positioning portion, and the locking rod cooperates with the strip-shaped hole to position and lock the sealing adjustment block.

[0009] Furthermore, the small furnace cover is provided with a positioning hole for matching with the locking rod, and the positioning portion is provided with a pressing sheet for matching with the locking rod.

[0010] Furthermore, the furnace cover adjustment assembly includes a bracket installed on the large furnace cover, an adjusting rod installed on the bracket, a locking nut used in conjunction with the adjusting rod, and an adjusting plate arranged at the end of the adjusting rod and used in conjunction with the small furnace cover. The adjusting rod moves along the radial direction of the small furnace cover to drive the adjusting plate to adjust the position of the small furnace cover.

[0011] Furthermore, the furnace cover adjustment components are multiple groups, and the multiple groups of furnace cover adjustment components are evenly distributed on the large furnace cover, and the adjustment plate is arranged at the end of the adjustment rod.

[0012] Furthermore, the small furnace cover is provided with pre-buried lifting lugs.

[0013] The beneficial effects of the present invention are:

[0014] The adjustable refractory furnace cover of the present technical solution can radially adjust the small furnace cover through the furnace cover adjustment component, and at the same time, the gap between the electrode and the electrode hole can be adjusted during electrode installation through the sealing adjustment component. The overall structure is simple and reliable, and the adjustment is convenient, which is beneficial to maintaining the furnace pressure and reducing smoke overflow pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is an overall schematic diagram of the present invention;

[0017] Figure 2 It is a top view schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of a traditional furnace cover;

[0019] Figure 4 This is a top view of a traditional furnace cover. DETAILED DESCRIPTION

[0020] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a top view schematic diagram of the present invention; Figure 3 This is a schematic diagram of a traditional furnace cover; Figure 4 It is a top view of a traditional furnace cover; as shown in the figure, an adjustable refractory furnace cover includes a large furnace cover, a small furnace cover 8, and a furnace cover adjustment component installed on the large furnace cover for adjusting the position of the small furnace cover, the small furnace cover is provided with an electrode hole for installing an electrode, and the small furnace cover is provided with a sealing adjustment component for sealing adjustment with the electrode; the adjustable refractory furnace cover of the technical solution can radially (i.e. Figure 1 The seal adjustment assembly can be used to adjust the electrode and the electrode hole (i.e. Figure 2There are three electrode holes on the small and medium-sized furnace covers to adjust the gap between them. The overall structure is simple and reliable, and the adjustment is convenient, which is beneficial to maintaining the furnace pressure and reducing the pollution of flue gas overflow.

[0021] In this embodiment, the sealing adjustment assembly includes a sealing adjustment block 7 mounted on the small furnace cover and a locking rod 4, and the locking rod 4 is used to lock the sealing adjustment block 7 on the small furnace cover. The locking rod 4 can be a locking bolt, which is positioned and locked by cooperating with the hole opened on the sealing adjustment block 7.

[0022] In this embodiment, the sealing adjustment block 7 is composed of multiple blocks, and the multiple sealing adjustment blocks 7 are evenly distributed in the circumferential direction of the electrode hole opening. The sealing adjustment block 7 is an overall arc-shaped structure, and a positioning portion for positioning and installation is formed in the middle of the sealing adjustment block. Three electrode sealing adjustment blocks are provided in the circumferential direction of each electrode hole, and an adjustment gap is reserved between two adjacent blocks. The electrode block is an overall arc-shaped structure, and the three arc-structured electrode blocks can form a full circle structure after being embraced. The sealing adjustment block protrudes in the middle to form a positioning portion, and a radial long strip hole is opened on the positioning portion to cooperate with the locking rod 4 for adjustment and locking.

[0023] In this embodiment, the positioning portion is provided with a strip hole 81, and the locking rod cooperates with the strip hole to position and lock the sealing adjustment block 7; the locking rod 4 passes through the strip hole of the positioning portion and moves radially through the long hole to position and lock. Each electrode hole is adjusted by three sealing adjustment blocks 7, which can achieve rapid adjustment and positioning to meet assembly requirements.

[0024] In this embodiment, the small furnace cover is provided with a positioning hole for the locking rod, and the positioning portion is provided with a pressing plate 6 for the same purpose. The locking rod 4 ensures the stability and performance of the overall structure after installation through the cooperation of the locking nut 5 and the pressing plate 6. Of course, the corresponding components such as the sealing adjustment block 7 are made of refractory materials (high temperature resistance and fire resistance, etc.), which is the prior art and will not be described in detail.

[0025] In this embodiment, the furnace cover adjustment assembly includes a bracket installed on the large furnace cover, an adjustment rod 1 installed on the bracket, a locking nut 2 used in conjunction with the adjustment rod 1, and an adjustment plate 3 arranged at the end of the adjustment rod and used in conjunction with the small furnace cover (to avoid concentrated stress damage to the side of the refractory small furnace cover by the end of the adjustment rod). The adjustment rod 1 moves in the radial direction of the small furnace cover to drive the adjustment plate to adjust the position of the small furnace cover 8. The adjustment rod 1 uses an adjustment bolt to cooperate with the locking nut and the bracket for radial adjustment. The adjustment plate 3 is an arc-shaped structure corresponding to the adjustment plate, which fits on the outer wall of the small furnace cover. When the adjustment rod 1 is radially adjusted, it can drive the adjustment plate 3 to push the small furnace cover to adjust its position.

[0026] In this embodiment, the furnace cover adjustment components are multiple groups, and the multiple groups of furnace cover adjustment components are evenly distributed on the large furnace cover, and the adjustment plate 3 is arranged at the end of the adjustment rod. There are four groups of furnace cover adjustment components, which are convenient for adjusting the small furnace cover in multiple positions. When in use, the adjustment plate 3 can be arranged at the end of the adjustment rod 1, and is also made of refractory materials.

[0027] In this embodiment, the small furnace cover 8 is provided with a pre-buried lifting lug 9. The provision of the pre-buried lifting lug 9 facilitates the lifting and installation of the furnace cover.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An adjustable refractory furnace cover, characterized in that: The invention comprises a large furnace cover, a small furnace cover and a furnace cover adjustment component installed on the large furnace cover for adjusting the position of the small furnace cover. The small furnace cover is provided with electrode holes for installing electrodes and the small furnace cover is provided with a sealing adjustment component for sealing adjustment in cooperation with the electrodes.

2. The adjustable refractory furnace cover according to claim 1, characterized in that: The sealing adjustment assembly comprises a sealing adjustment block installed on the small furnace cover and a locking rod, wherein the locking rod is used to lock the sealing adjustment block to be installed on the small furnace cover.

3. The adjustable refractory furnace cover according to claim 2, characterized in that: The sealing adjustment blocks are multiple and are evenly distributed in the circumferential direction of the electrode hole opening. The sealing adjustment blocks are in an arc-shaped structure as a whole, and a positioning portion for positioning and installation is formed in the middle of the sealing adjustment blocks.

4. The adjustable refractory furnace cover according to claim 3, characterized in that: The positioning portion is provided with a strip hole, and the locking rod cooperates with the strip hole to position and lock the sealing adjustment block.

5. The adjustable refractory furnace cover according to claim 4, characterized in that: The small furnace cover is provided with a positioning hole for installation in cooperation with the locking rod, and the positioning portion is provided with a pressing sheet for cooperation.

6. The adjustable refractory furnace cover according to claim 5, characterized in that: The furnace cover adjustment assembly includes a bracket installed on the large furnace cover, an adjustment rod installed on the bracket, a locking nut used in conjunction with the adjustment rod, and an adjustment plate arranged at the end of the adjustment rod and used in conjunction with the small furnace cover. The adjustment rod moves along the radial direction of the small furnace cover to drive the adjustment plate to adjust the position of the small furnace cover.

7. The adjustable refractory furnace cover according to claim 6, characterized in that: The furnace cover adjustment components are multiple groups, and the multiple groups of furnace cover adjustment components are evenly distributed on the large furnace cover. The adjustment plate is arranged at the end of the adjustment rod.

8. The adjustable refractory furnace cover according to claim 1, characterized in that: The small furnace cover is provided with pre-buried lifting lugs.

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