Observation hole cover structure of vertical flue of top-loading coke oven combustion chamber

Abstract

The utility model belongs to the technical field of metallurgy, and particularly relates to an observation hole cover structure of a vertical flue of a top-loading coke oven combustion chamber, which comprises a cover seat and a cover body, the cover body is matched with the cover seat and seals the cover seat, horizontal slide rails which are oppositely arranged are arranged on the outer side of the cover seat, a convex structure which is matched with the horizontal slide rails is arranged on the side part of the cover body, and the convex structure is matched with the horizontal slide rails. The cover body is connected with the horizontal sliding rail in a sliding mode, and the outer side of the cover seat is further provided with a positioning protrusion capable of clamping the cover body. According to the structure, when the cover body and the cover seat of the observation hole cover structure are buckled, the cover body and the cover seat are tightly connected and cannot be attracted by an electromagnet of a furnace top coal charging car, meanwhile, the cover body and the cover seat are convenient to disassemble, and the use stability of the observation hole cover structure cannot be influenced by deformation.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy, and particularly relates to a viewing hole cover structure of a vertical flue in a top-loading coke oven combustion chamber. Background Art

[0002] In modern coking industry, as one of the core equipments, the efficient and stable operation of coke oven is directly related to the efficiency of the whole production chain and the product quality. The combustion chamber design of coke oven is crucial. Among them, the vertical flue plays a key role in regulating and monitoring temperature, and has an important impact on ensuring uniform maturity of coke. Traditionally, the setting of vertical flue aims to achieve precise control of the temperature in the combustion chamber, but at the same time, it also faces a series of technical challenges.

[0003] Although the open design of the vertical flue is beneficial to heat transfer and monitoring, the negative pressure environment it brings makes the combustion chamber easy to inhale external air and impurities, which may not only interfere with the combustion process, reduce the thermal efficiency, but also lead to a decline in product quality. To solve this problem, the industry generally installs a viewing hole cover at the top of the vertical flue to block unnecessary air circulation and foreign object intrusion, so as to maintain the stability of the internal environment of the combustion chamber.

[0004] However, this solution encounters new problems in practical applications, especially in coke ovens using top-loading coal technology on the furnace top. The top-loading coal car on the furnace top is often equipped with an electromagnet to facilitate the removal and installation of the coal cover. However, during the operation, due to the action of the electromagnetic field, the small-sized and light-weight cast iron viewing hole cover is often accidentally sucked up and falls into the carbonization chamber, resulting in the failure of the vertical flue seal, and then causing inaccurate temperature control in the combustion chamber, and finally affecting the normal production order of the coke oven. In addition, this phenomenon also exacerbates equipment wear and increases maintenance costs.

[0005] In view of this, the prior art has tried to solve the above problems by improving the viewing hole cover structure. For example, the technical solution disclosed in CN104593017 B designs a viewing hole cover structure including a cover seat and a cover body, and uses a rotary locking or snap-locking mechanism to enhance the connection stability between the cover body and the cover seat, effectively resisting the risk of accidental suction caused by the attraction of the electromagnet. Although these designs improve the system safety to a certain extent, there are still problems such as inconvenient operation (such as rotary unlocking) and structural deformation caused by thermal expansion and contraction during long-term use. Especially for the cast iron cover body and cover seat, the corrosion problem also greatly shortens the service life and increases the replacement frequency.

[0006] In summary, the current technical solutions for the sight hole covers still cannot fully meet the actual requirements of coke oven production, especially in terms of durability, operation convenience, and long-term stability. Therefore, it is particularly urgent to develop a new generation of sight hole cover structures that can ensure the stability of the sight hole covers in the electromagnetic operation environment without being sucked away, maintain good sealing and corrosion resistance in the high-temperature environment, and facilitate quick disassembly, installation, and maintenance, so as to fundamentally improve the deficiencies of the existing technologies, promote the progress of coke oven combustion technologies, and ensure the high efficiency, stability, and safety of coking production. Summary of the Invention

[0007] In view of this, the present utility model provides a sight hole cover structure for the vertical flues of the combustion chambers of top-loading coke ovens, including a cover base and a cover body. The cover body is adapted to the cover base and closes the cover base. Oppositely arranged horizontal slide rails are provided on the outer side of the cover base, and a convex structure adapted to the horizontal slide rails is provided on the side of the cover body to slidably connect the cover body with the horizontal slide rails. A positioning convex is further provided on the outer side of the cover base that can engage with the cover body.

[0008] In some embodiments, one or more threaded first through holes are provided through the cover body. Threads adapted to the first through holes are provided on the outer side of the positioning pin, and the positioning pin is threadedly connected to the first through hole; one end of the positioning pin engages outside the first through hole, and the other end passes through the first through hole and is fixed to the cover base.

[0009] In some embodiments, a cover lifting ear hole is further provided on the upper surface of the cover body.

[0010] In some embodiments, a layer of mesh non-magnetic material layer is provided on the upper surface of the cover body. The mesh non-magnetic material layer covers the upper surface of the cover body and is hollowed out in the middle, and the ear hole is exposed from the hollowed-out part in the middle.

[0011] In some embodiments, a wavy non-magnetic material layer is provided on the upper surface of the cover body. The wavy non-magnetic material layer covers the upper surface of the cover body and is hollowed out in the middle, and the ear hole is exposed from the hollowed-out part in the middle.

[0012] In some embodiments, a heat-insulating and dust-proof gasket is provided at the bottom of the cover body.

[0013] In some embodiments, a luminous marking part is provided on the outer surface of the cover body, and the luminous marking part is annular or strip-shaped.

[0014] In some embodiments, a second through hole is provided on the horizontal slide rail, and a threaded hole adapted to the second through hole is provided on the side of the cover base. The horizontal slide rail is connected to the cover base through a nut and a bolt passing through the second through hole and the threaded hole.

[0015] In some embodiments, both the inner and outer surfaces of the cover body are coated with a high-reflectivity heat-insulating coating.

[0016] In some embodiments, a manual operating handle perpendicular to the cover body 1 is provided on the outer upper surface of the cover body 1.

[0017] The beneficial effects of the present utility model at least include:

[0018] The structure of the present utility model enables the cover body and the cover seat of the sight hole cover structure to be tightly connected when buckled, simplifies the installation and maintenance processes, the sliding connection ensures quick and accurate positioning, reduces the assembly time of the cover body and the cover seat, and at the same time, the positioning protrusion design prevents the cover body from shifting in a high-temperature vibration environment, ensures the stability of long-term sealing, effectively prevents heat dissipation and impurity intrusion, ensures that the cover body and the cover seat of the sight hole cover structure will not be attracted by the electromagnet of the top charging car of the furnace, and at the same time facilitates the disassembly of the cover body and the cover seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on these drawings.

[0020] Figure 1 The following shows a schematic diagram of the sight hole cover structure in some embodiments of the present utility model;

[0021] Figure 2 The following shows a schematic diagram of the sight hole cover structure in some embodiments of the present utility model;

[0022] Figure 3 The following shows a schematic diagram of the sight hole cover structure in some embodiments of the present utility model;

[0023] Figure 4 The following shows a schematic diagram of the sight hole cover structure in some embodiments of the present utility model;

[0024] Figure 5 The following shows a schematic diagram of the sight hole cover structure in some embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 1. Cover body; 2. Cover seat; 3. Horizontal slide rail; 4. Protrusion structure; 5. Positioning protrusion; 6. Heat-insulating and dust-proof gasket; 7. First through hole; 8. Positioning pin; 9. Ear hole; 10. Mesh non-magnetic material layer; 11. Wavy non-magnetic material layer; 12. Manual operating handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further elaborates on the embodiments of the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0027] It should be noted that all expressions using "first" and "second" in the embodiments of the present utility model are for distinguishing two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as limitations on the embodiments of the present utility model. This will not be elaborated one by one in the subsequent embodiments.

[0028] As Figure 1 shown, the present utility model provides a viewing hole cover structure for a vertical flue of a top-loading coke oven. The cover body 1 is adapted to the cover seat 2 and closes the cover seat 2. Oppositely arranged horizontal slide rails 3 are provided on the outer side of the cover seat 2, and a convex structure 4 adapted to the horizontal slide rails 3 is provided on the side of the cover body 1 to slidably connect the cover body 1 with the horizontal slide rails 3. A positioning projection 5 capable of engaging the cover body 1 is further provided on the outer side of the cover seat 2. Through the sliding connection design of the horizontal slide rails 3 and the convex structure 4, the present utility model realizes the rapid installation and disassembly of the viewing hole cover. At the same time, the positioning projection 5 ensures the accurate alignment of the cover body 1, enhancing the sealing performance and stability. When the electromagnet approaches the cover body 1, when the cover body 1 is buckled with the cover seat 2, due to the effect of the slide rails, the cover body 1 can only be separated from the cover seat 2 after horizontal sliding. Moreover, the positioning projection 5 prevents the cover body 1 from slipping down when the cover body 1 is buckled with the cover seat 2. The viewing hole cover structure of the present utility model simplifies the installation and maintenance processes. The sliding connection ensures rapid and accurate positioning, reducing the assembly time. At the same time, the design of the positioning projection 5 prevents the cover body 1 from shifting in a high-temperature vibration environment, ensuring the long-term sealing stability and effectively preventing heat dissipation and impurity intrusion.

[0029] In some embodiments, the cover body 1 is provided with one or more first through holes 7 with threads penetrating the cover body 1. The outer side of the positioning pin 8 is provided with threads adapted to the first through holes 7, and the positioning pin 8 is threadedly connected to the first through holes 7; one end of the positioning pin 8 is engaged outside the first through hole 7, and the other end passes through the first through hole 7 and is fixed to the cover base 2. The cover body 1 in the present utility model has a certain thickness, and the length of the positioning pin 8 is greater than this thickness. When the positioning pin 8 is threadedly connected to the cover body 1, the positioning pin 8 is fixed to the cover base 2, and one end extends into the inner cavity of the cover base 2. When the cover body 1 is buckled with the cover base 2, since there is a positioning protrusion 5 on one side of the cover base 2, if the horizontal position of the electromagnet of the top charging car is on the side of the positioning protrusion 5 of the cover body 1, the magnetic force will apply a horizontal force to the cover body 1. However, the cover body 1 will be blocked by the positioning protrusion 5 in the horizontal direction. But if the horizontal position of the electromagnet is on the opposite side of the positioning protrusion 5 of the cover body 1, the cover body 1 is subjected to a horizontal force away from the positioning protrusion 5 and is likely to slide along the horizontal slide rail 3 in the horizontal direction away from the positioning protrusion 5, causing the cover body 1 to fall off from the cover base 2 and thus be sucked away by the electromagnet. To solve this problem, the present utility model further provides a positioning pin 8. The positioning pin 8 is threadedly connected to the cover base 2. When the cover body 1 is buckled with the cover base 2, the positioning pin 8 penetrates and is fixed to the cover base 2. Since the cover base 2 has a certain thickness, it can well fix the positioning pin 8. When the electromagnet is in the horizontal direction on the opposite side of the positioning protrusion 5, the cover body 1 slides in the horizontal direction. When it slides to a certain position, the part of the positioning pin 8 extending into the cover base 2 will be stuck on the inner wall of the cover base 2, preventing the cover body 1 from further sliding. Such a structure can prevent the cover body 1 from sliding and falling off in the horizontal direction.

[0030] In some embodiments, a cover lifting ear hole 9 is further provided on the upper surface of the cover body 1. This structure provides a clear operation point, facilitating the quick opening or closing of the viewing hole cover using a special tool, reducing the manual operation difficulty, improving the work efficiency, reducing the difficulty and time of manual operation, and enhancing the safety and convenience of the operation.

[0031] As Figure 2 shown, in some embodiments, a layer of mesh non-magnetic material layer 10 is provided on the upper surface of the cover body 1. The mesh non-magnetic material layer 10 covers the upper surface of the cover body 1 and is hollowed out in the middle, and the ear hole 9 is exposed from the hollowed-out part in the middle. The non-magnetic material layer effectively avoids the influence of electromagnetic suction on the operation, reduces the contact area between the electromagnet and the magnetic part of the cover when the top charging car uses the electromagnet to pick up and install the coal charging cover, and at the same time maintains the usability of the ear hole 9, enhancing the convenience and safety of the viewing hole cover structure.

[0032] As Figure 3As shown, in some embodiments, a wavy non-magnetic material layer is provided on the upper surface of the cover body 1. The wavy non-magnetic material layer 11 covers the upper surface of the cover body 1 and is hollowed out in the middle, and the ear hole 9 is exposed from the hollowed-out part in the middle. The wavy design increases the strength and wear resistance of the surface of the cover body 1. At the same time, the wavy design reduces the contact area between the electromagnet and the cover base 2, reduces the electromagnetic attraction of the electromagnet to the cover base 2, reduces the wear of the surface of the cover base 2 caused by the contact of the electromagnet of the top charging car of the coke oven, maintains the protective effect of the non-magnetic material layer, and improves the overall durability.

[0033] In some embodiments, as Figure 5 described, a heat-insulating and dust-proof gasket 6 is provided at the bottom of the cover body 1. The heat-insulating and dust-proof gasket 6 is arranged at the lower edge of the bottom of the cover body 1 and covers the lower edge of the bottom of the cover body 1. The heat-insulating and dust-proof gasket 6 effectively isolates high temperature and prevents dust from entering, reduces equipment wear, extends the service life, reduces heat energy loss at the same time, and improves energy utilization efficiency. In some embodiments, the material of the heat-insulating and dust-proof gasket 6 is heat-resistant rubber.

[0034] In some embodiments, a luminous marking part is provided on the outer surface of the cover body 1, and the luminous marking part is annular or strip-shaped. In the night or in an environment with insufficient light, the operator can quickly locate the sight hole cover, improving the response speed in case of emergency, ensuring the safety and continuity of the operation, and beautifying the appearance of the equipment at the same time, enhancing the overall aesthetics.

[0035] In some embodiments, a second through hole is provided on the horizontal slide rail 3, and a threaded hole adapted to the second through hole is provided on the side of the cover base 2. The horizontal slide rail 3 is connected to the cover base 2 through a nut and a bolt passing through the second through hole and the threaded hole. The bolt connection ensures the firmness of the slide rail installation. Even in a high-temperature or vibrating environment, the slide rail will not loosen or fall off, enhancing the stability of the overall structure, extending the service life, and simplifying the maintenance work.

[0036] In some embodiments, high-reflectivity heat-insulating coatings are coated on both the inner and outer surfaces of the cover body 1. The coatings significantly improve the heat resistance and heat-insulating performance of the sight hole cover, reduce the influence of the external environment on the temperature inside the coke oven, reduce energy consumption, protect the material of the cover body 1 at the same time, prevent aging and deformation under long-term high temperature, and extend the product life.

[0037] As Figure 4As shown, in some embodiments, a manual operating handle 12 perpendicular to the cover body 1 is provided on the outer upper surface of the cover body 1. The manual operating handle 12 can be an operating handle made of heat-insulating material, enabling the staff to easily lift or lower the cover body 1 without special tools, simplifying the operation steps, improving work efficiency, and especially being able to respond quickly in case of emergency, ensuring the continuity and safety of the coke oven operation.

[0038] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0039] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A viewing hole cover structure for a vertical flue of a combustion chamber in a top-loading coke oven, comprising a cover base (2) and a cover body (1), characterized in that: The cover body (1) is adapted to the cover base (2) and closes the cover base (2). Oppositely arranged horizontal slide rails (3) are provided on the outer side of the cover base (2), and a convex structure (4) adapted to the horizontal slide rails (3) is provided on the side of the cover body (1) to slidably connect the cover body (1) with the horizontal slide rails (3). A positioning projection (5) capable of engaging the cover body (1) is further provided on the outer side of the cover base (2).

2. The viewing hole cover structure according to claim 1, characterized in that, One or more first through holes (7) with threads are provided in the cover body (1). Threads adapted to the first through holes (7) are provided on the outer side of the positioning pins (8), and the positioning pins (8) are threadedly connected to the first through holes (7). One end of the positioning pin (8) is engaged outside the first through hole (7), and the other end passes through the first through hole (7) and is fixed to the cover base (2).

3. The structure of the sight hole cover according to claim 1, wherein, A cover-lifting ear hole (9) is further provided on the upper surface of the cover body (1).

4. The fire hole cover structure according to claim 3, characterized in that, A layer of mesh non-magnetic material layer (10) is provided on the upper surface of the cover body (1). The mesh non-magnetic material layer (10) covers the upper surface of the cover body (1) and is hollowed out in the middle, and the ear hole (9) is exposed from the hollowed-out part in the middle.

5. The structure of the sight hole cover according to claim 3, characterized in that, A wavy non-magnetic material layer is provided on the upper surface of the cover body (1). The wavy non-magnetic material layer (11) covers the upper surface of the cover body (1) and is hollowed out in the middle, and the ear hole (9) is exposed from the hollowed-out part in the middle.

6. The structure of the sight hole cover according to claim 1, characterized in that, A heat-insulating and dust-proof washer (6) is provided at the bottom of the cover body (1).

7. The fire hole cover structure according to claim 1, characterized in that, A luminous marking part is provided on the outer surface of the cover body (1), and the luminous marking part is annular or strip-shaped.

8. The structure of the sight hole cover according to claim 1, characterized in that, A second through hole is provided on the horizontal slide rail (3), and a threaded hole adapted to the second through hole is provided on the side of the cover base (2). The horizontal slide rail (3) is connected to the cover base (2) through a nut and a bolt passing through the second through hole and the threaded hole.

9. The structure of the sight hole cover according to claim 1, characterized in that, High-reflectivity heat-insulating coatings are coated on both the inner and outer surfaces of the cover body (1).

10. The viewing hole cover structure according to claim 1, characterized in that, A manual operation handle (12) perpendicular to the cover body (1) is provided on the upper surface of the outer side of the cover body (1).

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