Observation hole structure of flame path wall of anode carbon block roasting furnace

Abstract

The utility model discloses an observation hole structure of a flame path wall of an anode carbon block roasting furnace, relates to the technical field of roasting furnaces, and mainly aims to maintain the sealing effect of a matched sealing surface of the observation hole structure. According to the main technical scheme, the observation hole structure of the flame path wall of the anode carbon block roasting furnace comprises a sealing cover seat body and a sealing cover plug, a through hole is formed in the center of the sealing cover seat body, and a plurality of circles of concentric annular grooves are formed in the upper end face of the sealing cover seat body; a plurality of circles of concentric annular protrusions are arranged on the lower end face of the sealing cover plug, and each circle of annular protrusion corresponds to one circle of annular groove.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting furnaces, in particular to an observation hole structure of a flue wall of an anode carbon block roasting furnace. Background Art

[0002] In China, in the roasting production of pre-baked electrolytic aluminum anode carbon blocks, a plurality of flame observation sink holes are arranged on the upper surface of each flue wall of the anode carbon block roasting furnace charging box. An observation hole reducing seat is installed on each flame observation sink hole, and a small round cover for plugging the inner hole of the observation hole reducing seat is installed on the sink hole in the middle of the observation hole reducing seat. The flame observation sink hole, the observation hole reducing seat, and the small round cover for plugging the inner hole of the observation hole reducing seat (all are cast with high-temperature casting materials) are assembled and used together. The mating sealing surfaces work in an environment with a high temperature of about 1100°C for a long time. After the mating sealing surfaces are burned out, they become rough, damaged, and uneven, and each mating sealing surface loses its sealing function. The negative pressure in the flue wall of the anode carbon block roasting furnace charging box leaks seriously, and a large amount of cold air enters the flue wall, resulting in a large temperature difference between the upper and lower parts inside the flue wall of the combustion furnace chamber of the roasting furnace, and the roasting quality of the anode carbon block is seriously affected. Content of the Utility Model

[0003] In view of this, the utility model provides an observation hole structure of a flue wall of an anode carbon block roasting furnace, and the main purpose is to maintain the sealing effect of the mating sealing surface of the observation hole structure.

[0004] To achieve the above purpose, the utility model mainly provides the following technical solutions:

[0005] The utility model provides an observation hole structure of a flue wall of an anode carbon block roasting furnace, and the structure includes: a sealing cover seat body and a sealing cover plug head;

[0006] A through hole is arranged in the center of the sealing cover seat body, and multiple concentric annular grooves are arranged on the upper end surface of the sealing cover seat body;

[0007] Multiple concentric annular protrusions are arranged on the lower end surface of the sealing cover plug head, and each annular protrusion corresponds to one of the annular grooves.

[0008] The purpose of the utility model and the solution to its technical problems can be further realized by adopting the following technical measures.

[0009] Optionally, it further includes a plurality of high-temperature gaskets, and each high-temperature gasket is correspondingly placed at the bottom of one of the annular grooves.

[0010] Optionally, the annular groove close to the through hole is inclined towards the center.

[0011] Optionally, it further includes a lifting ring, and the lifting ring is fixedly connected to the upper end surface of the sealing cover plug head.

[0012] Optionally, the lower peripheral edge of the through hole of the sealing cover seat body is connected to an annular fixing seat, and the annular fixing seat is correspondingly inserted into the observation hole of the furnace surface castable block. The observation hole corresponds to the geometric center of the flue hole on the upper end surface of the flue wall, and the size of the flue hole is larger than that of the observation hole.

[0013] Optionally, the flue hole is rectangular, the width of the flue hole is 310 mm, the length of the flue hole is 230 mm, and the diameter of the observation hole is 140 mm.

[0014] By means of the above technical solution, the utility model has at least the following advantages:

[0015] The sealing cover seat body is placed on the upper surface of the furnace surface castable block. The through hole in the center of the sealing cover seat body corresponds to the observation hole of the furnace surface castable block. The multi-turn concentric annular protrusions on the lower end surface of the sealing cover plug are correspondingly nested in the annular groove. In this way, a folded sealing surface is formed at the contact surface between the sealing cover plug and the sealing cover seat body. This sealing surface has better sealing performance compared with the sealing surface that extends straight, and it is not easy to have negative pressure leakage in the flue wall, avoiding a large amount of cold air from entering the flue wall, thereby maintaining the roasting quality of the anode carbon block. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of a structure of an observation hole of a flue wall of an anode carbon block roasting furnace provided by an embodiment of the utility model;

[0017] Figure 2 It is a partial three-dimensional exploded view of a structure of an observation hole of a flue wall of an anode carbon block roasting furnace provided by an embodiment of the utility model;

[0018] Figure 3 It is Figure 1 an enlarged view of part A in

[0019] Figure 4 It is Figure 2 an enlarged view of part B in

[0020] The reference numerals in the accompanying drawings of the specification include: sealing cover seat body 1, through hole 2, annular groove 3, sealing cover plug 4, annular protrusion 5, high-temperature sealing gasket 6, inverted frustum-shaped plug 7, lifting ring 8, annular fixing seat 9, observation hole 10, flue hole 11, furnace surface castable block 12, flue wall 13. Detailed Embodiments

[0021] To further elaborate on the technical means and effects adopted by the present utility model to achieve the intended utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manners, structures, features, and their effects of the application based on the present utility model as follows. In the following description, different "one embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0022] The following further details the present utility model in conjunction with the accompanying drawings and embodiments.

[0023] As Figure 1 、 Figure 2 、 Figure 3 shown, a flue wall observation hole structure for an anode carbon block baking furnace provided by an embodiment of the present utility model includes: a sealing cover seat body 1 and a sealing cover plug 4;

[0024] A through hole 2 is provided at the center of the sealing cover seat body 1, and multiple concentric annular grooves 3 are provided on the upper end surface of the sealing cover seat body 1;

[0025] Multiple concentric annular protrusions 5 are provided on the lower end surface of the sealing cover plug 4, and each circle of the annular protrusions 5 corresponds to one circle of the annular grooves 3.

[0026] The working process of a flue wall observation hole structure for an anode carbon block baking furnace is as follows:

[0027] The sealing cover seat body 1 is placed on the upper surface of the furnace surface castable block 12, the through hole 2 at the center of the sealing cover seat body 1 corresponds to the observation hole 10 of the furnace surface castable block 12, and the multiple concentric annular protrusions 5 on the lower end surface of the sealing cover plug 4 are correspondingly nested in the annular grooves 3. In this way, at the contact surface between the sealing cover plug 4 and the sealing cover seat body 1, a folded sealing surface is formed. This sealing surface has better sealing performance compared to a straight-extending sealing surface, is not prone to negative pressure leakage in the flue wall 13, and avoids a large amount of cold air from entering the flue wall 13, thereby maintaining the baking quality of the anode carbon block.

[0028] In the specific implementation manner, it further includes a plurality of high-temperature gaskets 6, and each high-temperature gasket 6 is correspondingly placed at the bottom of one of the annular grooves 3.

[0029] In this implementation manner, specifically, the high-temperature gasket 6 seals the contact surface between the annular protrusion 5 and the annular groove 3.

[0030] Specifically, the high-temperature gasket 6 is made of asbestos material.

[0031] As Figure 3 and Figure 4 shown, in the specific implementation manner, the annular groove 3 near the through hole 2 is inclined towards the center.

[0032] In this embodiment, specifically, the lower end face center of the sealing cover plug 4 is connected to the inverted frustum-shaped plug 7, and the circumferential side surface of the inverted frustum-shaped plug 7 fits against the inclined surface of the annular groove 3 to form an inclined sealing surface. Compared with the horizontal sealing surface, the inclined sealing contact area is larger and the sealing is more complete.

[0033] As Figure 3 and Figure 4 shown, in a specific embodiment, it further includes a lifting ring 8, and the lifting ring 8 is fixedly connected to the upper end face of the sealing cover plug 4.

[0034] In this embodiment, specifically, the operator holds the hook and hooks the lifting ring 8, which is convenient for lifting the sealing cover plug 4 away from the sealing cover seat body 1 and facilitating the observation of the flame in the flue wall 13.

[0035] As Figure 3 shown, in a specific embodiment, the lower peripheral edge of the through hole 2 of the sealing cover seat body 1 is connected to an annular fixing seat 9, and the annular fixing seat 9 is correspondingly inserted into the observation hole 10 of the furnace surface castable block 12. The observation hole 10 corresponds to the geometric center of the flue hole 11 on the upper end face of the flue wall 13, and the size of the flue hole 11 is larger than the size of the observation hole 10.

[0036] In this embodiment, specifically, the annular fixing seat 9 is correspondingly inserted into the observation hole 10, which is convenient for the burner or the thermocouple to be inserted into the through hole 2; at the same time, even if the flue wall 13 is deformed due to long-term heating and the flue hole 11 is offset relative to the observation hole 10, since the size of the flue hole 11 is larger than the size of the observation hole 10, it is avoided that the solid part on the upper end face of the flue wall 13 blocks the observation hole 10. When the burner or the thermocouple is inserted into the through hole 2, the solid part of the flue wall 13 will not block the vertical insertion of the burner or the thermocouple, so that the burner can be prevented from being inserted at an oblique angle, and the burner can be prevented from directly spraying the flame towards the inner side surface of the flue wall 13, thereby delaying the burning damage of the flue wall 13.

[0037] As Figure 2 shown, in a specific embodiment, the flue hole 11 is rectangular, the width of the flue hole 11 is 310 mm, the length of the flue hole 11 is 230 mm, and the diameter of the observation hole 10 is 140 mm.

[0038] In this embodiment, specifically, a flue wall 13 is built with flue bricks to form a flue hole 11 with a size of 230 mm * 310 mm. The diameter of the observation hole 10 is 140 mm, and the diameter of the observation hole 10 is approximately equal to half of the length or width of the flue hole 11. The center of the observation hole 10 is correspondingly located at the geometric center of the flue hole 11 on the upper end face of the flue wall 13. No matter how severely the flue wall 13 is deformed by heat and no matter how much the centers of the observation hole 10 and the flue hole 11 are offset relative to each other, the solid part on the upper end face of the flue wall 13 is not likely to block the observation hole 10. By avoiding the burner or the thermocouple being inserted into the flue wall 13 at an oblique angle, the burner or the thermocouple will not be inclined relative to the through hole 2. The overlapping part of the vertically inserted burner or thermocouple can be better attached to the upper peripheral edge of the through hole 2, avoiding negative pressure leakage in the flue wall 13 and ensuring the sealing effect of the upper peripheral edge of the through hole 2.

[0039] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An observation hole structure for the flue wall of an anode carbon block roasting furnace, characterized in that: include: A sealing cover seat body, wherein a through hole is provided at the center of the sealing cover seat body, and a plurality of concentric annular grooves are provided on the upper end surface of the sealing cover seat body; A sealing cover plug, wherein the lower end surface of the sealing cover plug is provided with a plurality of circles of concentric annular protrusions, and each circle of the annular protrusions corresponds to one circle of the annular grooves.

2. The observation hole structure of the flue wall of the anode carbon block roasting furnace according to claim 1 is characterized in that: It also includes a plurality of high-temperature sealing gaskets, each of which is placed at the bottom of one of the annular grooves.

3. The observation hole structure of the flue wall of the anode carbon block roasting furnace according to claim 2, characterized in that: The annular groove close to the through hole is inclined toward the center.

4. The observation hole structure of the flue wall of the anode carbon block roasting furnace according to any one of claims 1 to 3, characterized in that: It also includes a lifting ring, which is fixedly connected to the upper end surface of the sealing cover plug.

5. The observation hole structure of the flue wall of the anode carbon block roasting furnace according to any one of claims 1 to 3, characterized in that: The lower end periphery of the through hole of the sealing cover seat body is connected to the annular fixing seat, and the annular fixing seat corresponds to the observation hole inserted into the furnace surface casting block. The observation hole corresponds to the geometric center of the fire channel hole on the upper end surface of the fire channel wall, and the size of the fire channel hole is larger than the size of the observation hole.

6. The observation hole structure of the flue wall of the anode carbon block roasting furnace according to claim 5, characterized in that: The fire channel hole is rectangular, the width of the fire channel hole is 310 mm, the length of the fire channel hole is 230 mm, and the diameter of the observation hole is 140 mm.

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