Roasting machine and self-locking type water-cooling-free bearing wall thereof

Abstract

The utility model provides a roasting machine and a self-locking type water-cooling-free bearing wall thereof. The self-locking type water-cooling-free bearing wall is sequentially provided with an upper wall body, a middle transition layer and a partition wall structure from top to bottom, the upper wall body comprises a hook and a thick hanging brick hung below the hook, the transition layer comprises a special-shaped hanging brick and an interlayer structure supported below the special-shaped hanging brick, the interlayer structure is arranged in a hollow mode, and the partition wall structure is arranged in the middle of the middle transition layer. The partition wall structure comprises a thin hanging brick with the top hung in the hollow structure of the sandwich structure. According to the self-locking type water-cooling-free load-bearing wall, the partition function and the load-bearing function of the wall body are separated through a novel structural form, in the high-temperature environment, water cooling is not needed, a self-load-bearing stable structure is formed, meanwhile, the tensile force borne by the refractory materials on the upper portion is relieved, the refractory materials are prevented from being broken, the problems of collapse, damage and falling off of a partition wall of a roasting machine are fundamentally solved, and the service life of the roasting machine is prolonged. The service life of the refractory material is prolonged, and the purpose of long-term stable production operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting machines, in particular to a roasting machine and its self-locking type non-water-cooled load-bearing wall. Background Technique

[0002] Metallurgical industrial furnaces are important equipment for modern industrial production. As the core equipment for producing pellet ore, the inner lining of the roasting machine is the most vulnerable part of the whole equipment. According to the process requirements, the green iron ore balls are successively preheated, roasted, and cooled on the roasting machine. The roasting machine operates under the conditions of alternating high and low temperatures, high impact, and high load for a long time. Therefore, the structural design of the inner lining is crucial for the safe and stable operation of the overall system. An unreasonable structural design will generate structural stress and thermal stress, cause damage to the refractory masonry during operation, lose the protection of the refractory material, and greatly shorten the service life of the equipment.

[0003] The existing partition wall structure design of the inner lining of the roasting machine furnace is as Figure 1 shown. It adopts the form of hooks + sugar-coated gourd-shaped hanging bricks. From top to bottom, it is like a curtain, installing the refractory material in the furnace chamber to form a wall. The hooks are fixed on the steel beams at the upper part of the furnace chamber. The hooks are placed outside the furnace chamber and are not affected by high temperatures. The advantage of this form is that it realizes a waterless operation mode, does not require the support of the bottom water-cooled beam, eliminates the safety hazard of water leakage of the water-cooled beam, and can bear the weight of the wall only by its own strength.

[0004] The use effect of this design form is not ideal during actual operation, and faults occur frequently. Although many improvements have been made, there are still defects in the structure. The reason is that the temperature in the roasting machine furnace is different in different intervals, especially at the boundary of the cold and hot alternation, the temperature difference on both sides of the furnace partition wall is huge, generating structural stress and thermal stress, resulting in misalignment and damage of the partition wall. In addition, the hanging structure form is unstable, and the inner lining, partition wall, etc. in the furnace are prone to collapse and fall off; the tensile strength of the refractory material is much lower than the compressive strength, and the upper refractory material is easily damaged. Thus, it greatly affects the service life of the roasting machine. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a roasting machine and its self-locking type non-water-cooled load-bearing wall, aiming to separate the partition function and the load-bearing function of the wall in a novel structural form, thereby improving the service life of the refractory material.

[0006] To achieve the above purpose, the utility model provides a self-locking type non-water-cooled load-bearing wall of a roasting machine, which is successively provided with an upper wall body, an intermediate transition layer, and a partition wall structure from top to bottom. Among them,

[0007] The upper wall body includes hooks and thick hanging bricks suspended below the hooks. The transition layer includes special-shaped hanging bricks and a sandwich structure supported below the special-shaped hanging bricks. The sandwich structure is hollow. The partition wall structure includes thin hanging bricks hoisted at the top inside the hollow structure of the sandwich structure.

[0008] Preferably, multiple said special-shaped hanging bricks are arranged at intervals below the thick hanging bricks, and the top end of the thin hanging brick abuts against the bottom end face of the thick hanging brick or against the bottom end face of the special-shaped hanging brick.

[0009] Preferably, the thickness of the upper part of the special-shaped hanging brick is greater than the thickness of the thick hanging brick, and the thickness of the lower part of the special-shaped hanging brick is equal to the thickness of the thin hanging brick.

[0010] Preferably, the stepped surface with the changing thickness of the special-shaped hanging brick is supported on the top end surface of the intermediate transition layer.

[0011] Preferably, the thickness of the upper part of the special-shaped hanging brick is equal to the thickness of the intermediate transition layer.

[0012] Preferably, the intermediate transition layer includes a transition layer located above and an arched structure located below, wherein,

[0013] The transition layer includes a front transition wall and a rear transition wall composed of multiple petal bricks. The arched structure includes a front arched wall and a rear arched wall. Both the front arched wall and the rear arched wall include multiple arched bricks, a top arch closing brick located in the middle, and arch foot bricks located on both sides.

[0014] Preferably, the top arch closing brick is designed with a card slot structure to form a lock to prevent the refractory material from shrinking and falling off in the cold state.

[0015] Preferably, the upper and lower surfaces of the arched brick are both arc-shaped.

[0016] Preferably, the partition wall structure includes multiple staggered brick column structures. Each brick column structure includes multiple bottom thin hanging bricks or includes multiple bottom thin hanging bricks and half-section thin hanging bricks.

[0017] The present utility model further provides a roasting machine, including the self-locking type waterless cooling load-bearing wall of the above-mentioned roasting machine.

[0018] The self-locking waterless-cooling load-bearing wall of the roasting machine proposed by the present utility model realizes the operation mode of the waterless-cooling load-bearing beam; through the stability of the intermediate transition layer as the support of the wall body, the stability and reliability of the partition wall are realized; the form of combining semi-suspension and semi-support is adopted to reduce the tensile force on the upper refractory material, prevent the refractory material from breaking, and improve the service life of the refractory material; the intermediate transition layer adopts the structure form of a sandwich layer to reduce the thermal stress on the intermediate partition wall; in addition, this load-bearing wall separates the functions of partition and load-bearing. The thin hanging bricks at the bottom only play a role in partitioning. Even if they are damaged or fall off due to external force collision, they will not affect the stability and effectiveness of the entire wall body; fundamentally solve the problems of collapse, damage and falling off of the partition wall of the current roasting machine. This self-locking waterless-cooling load-bearing wall also has the advantages of reasonable structure design, simple production, convenient construction and long service life, which is very conducive to popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of the self-locking waterless-cooling load-bearing wall of the roasting machine in the prior art;

[0020] Figure 2 FIG. is a schematic structural diagram of a preferred embodiment of the self-locking waterless-cooling load-bearing wall of the roasting machine of the present utility model;

[0021] Figure 3 FIG. is a schematic cross-sectional structural diagram of a preferred embodiment of the self-locking waterless-cooling load-bearing wall of the roasting machine of the present utility model;

[0022] Figure 4 is Figure 3 a schematic cross-sectional structural diagram in the A-A direction shown;

[0023] Figure 5a FIG. is a front view structural diagram of the special-shaped hanging brick in the self-locking waterless-cooling load-bearing wall of the roasting machine of the present utility model;

[0024] Figure 5b FIG. is a side view structural diagram of the special-shaped hanging brick in the self-locking waterless-cooling load-bearing wall of the roasting machine of the present utility model.

[0025] In the figures, 1 - hook, 2 - thick hanging brick, 3 - petal brick, 4 - arch top closing brick, 5 - arched brick, 6 - arch foot brick, 7 - thin hanging brick at the bottom, 8 - special-shaped hanging brick, 9 - half-section thin hanging brick, 10 - side wall pouring layer, 11 - pellet.

[0026] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] Referring to Figures 2 to 4 , in this preferred embodiment, a self-locking type waterless cooling load-bearing wall of a roasting machine includes an upper wall body, an intermediate transition layer, and a partition wall structure arranged in sequence from top to bottom. Among them,

[0030] The upper wall body includes a hook 1 and a thick hanging brick 2 hanging below the hook 1. The transition layer includes a special-shaped hanging brick 8 and a sandwich structure supported below the special-shaped hanging brick 8. The sandwich structure is provided with a hollow inside. The partition wall structure includes a thin hanging brick (the thin hanging brick refers to a brick whose thickness is less than that of the thick hanging brick 2 relative to the thick hanging brick 2) hoisted at the top inside the hollow structure of the sandwich structure.

[0031] In this embodiment, the thick hanging brick 2 adopts a sugar-loaf-shaped structure. Therefore, a plurality of special-shaped hanging bricks 8 are arranged at intervals below the thick hanging brick 2. The top end of the thin hanging brick abuts against the bottom end face of the thick hanging brick 2 or the bottom end face of the special-shaped hanging brick 8.

[0032] In this embodiment, referring to Figure 3 , Figure 5a and Figure 5b , the thickness of the upper part of the special-shaped hanging brick 8 is greater than that of the thick hanging brick 2, and the thickness of the lower part of the special-shaped hanging brick 8 is equal to the thickness of the thin hanging brick.

[0033] The stepped surface with the thickness change of the special-shaped hanging brick 8 is supported on the top end surface of the intermediate transition layer. The thickness of the upper part of the special-shaped hanging brick 8 is equal to the thickness of the intermediate transition layer.

[0034] Specifically, referring to Figure 1 and 3 , in this embodiment, the intermediate transition layer includes a transition layer located above and an arch structure located below. Among them,

[0035] The transition layer includes a plurality of petal bricks 3 forming a front transition wall and a rear transition wall (the middle layer formed by the front transition wall and the rear transition wall is used to install part of the partition wall structure, and the lower part of the partition wall structure extends out from the lower part of the arch structure). The arch structure includes a front arch wall and a rear arch wall. The front arch wall and the rear arch wall both include a plurality of arch bricks 5, arch top and door bricks 4 in the middle, and arch foot bricks 6 on both sides.

[0036] The lower surface of the petal brick 3 is connected to the lower arch structure, transferring the weight of the upper wall to the lower arch structure. The upper surface of the petal brick 3 is also connected to the special-shaped hanging brick 8, through which the weight of the bottom thin hanging brick 77 and the half thin hanging brick 9 are transferred to the lower arch structure. The arch structure is the main load-bearing layer, bearing the weight transferred from the upper petal brick 3; the pressure and its own gravity are transferred to the arch foot bricks 6 on both sides through the arch top door brick 4 and the arch brick 5. The arch foot bricks 6 on both sides of the partition wall eventually bear the pressure of the entire partition wall. The arch structure is divided into two sides, the front and the back, with the thin hanging bricks sandwiched in the middle, which can reduce the thermal stress on the thin hanging bricks.

[0037] A small part of the deadweight generated by the wall composed of the upper thick hanging bricks 2 is borne by the top hook 1; most of the force is borne by the middle transition layer and the lower arch structure, which supports the upper thick hanging bricks 2 and reduces the refractory breakage caused by the excessive hanging weight of the thick hanging bricks 2.

[0038] Furthermore, the arch door brick 4 is designed with a slot structure to form a lock to prevent the refractory material from shrinking and falling when it is cold.

[0039] Further, refer to Figure 1 The upper and lower surfaces of the arched brick 5 are both arc-shaped, which facilitates the production of the arched brick 5.

[0040] In this embodiment, refer to Figure 2 and Figure 4 The partition wall structure includes a plurality of brick row structures arranged in a staggered manner, and each brick row structure includes a plurality of bottom thin hanging bricks 7 or a plurality of bottom thin hanging bricks 7 and a half-thin hanging brick 9. The partition wall structure adopts thin hanging bricks, thereby greatly reducing its own weight. In addition, because the thick hanging bricks 2 above adopt a candied haws-shaped structure, a half-thin hanging brick 9 needs to be set for each row, so as to ensure that the bottom of the partition wall structure below is at the same height, so that the gap height between the partition wall and the pellet bed is consistent.

[0041] Because the bottom partition wall structure only serves as a partition and is not the main stress-bearing part, even if it is damaged or falls off by external force, it will not affect the stability and effectiveness of the entire wall.

[0042] The self-locking waterless-cooling load-bearing wall of the roasting machine proposed in this embodiment realizes the operation mode of the waterless-cooling load-bearing beam; through the stability of the intermediate transition layer as the support of the wall, the stability and reliability of the partition wall are realized; the semi-suspension + semi-support combination form is adopted to reduce the tensile force on the upper refractory, prevent the refractory from breaking, and improve the service life of the refractory material; the intermediate transition layer adopts the sandwich structure form to reduce the thermal stress on the intermediate partition wall; in addition, this load-bearing wall separates the functions of partition and load-bearing. The bottom thin hanging bricks 7 only play the role of partition. Even if they are damaged or fall off due to external force collision, they will not affect the stability and effectiveness of the entire wall; fundamentally solve the problems of collapse, damage and falling off of the current partition wall of the roasting machine. This self-locking waterless-cooling load-bearing wall also has the advantages of reasonable structure design, simple manufacture, convenient construction and long service life, which is very conducive to popularization and application.

[0043] The present utility model also proposes a roasting machine.

[0044] In this preferred embodiment, a roasting machine includes a self-locking waterless-cooling load-bearing wall of the roasting machine. The specific structure and beneficial effects of the self-locking waterless-cooling load-bearing wall are referred to the above embodiment and will not be elaborated here.

[0045] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A self-locking non-water-cooled load-bearing wall of a roasting machine, characterized in that: The upper wall, the middle transition layer and the partition wall structure are arranged in sequence from top to bottom. The upper wall includes a hook and a thick hanging brick hung under the hook, the transition layer includes special-shaped hanging bricks and a sandwich structure supported under the special-shaped hanging bricks, the sandwich structure is hollow, and the partition wall structure includes a thin hanging brick hung on the top inside the hollow structure of the sandwich structure.

2. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 1, characterized in that: A plurality of the special-shaped hanging bricks are arranged at intervals below the thick hanging bricks, and the top of the thin hanging bricks abuts against the bottom end surface of the thick hanging brick or the bottom end surface of the special-shaped hanging brick.

3. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 2, characterized in that: The thickness of the upper part of the special-shaped hanging brick is greater than the thickness of the thick hanging brick, and the thickness of the lower part of the special-shaped hanging brick is equal to the thickness of the thin hanging brick.

4. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 3, characterized in that: The step surface with varying thickness of the special-shaped hanging brick is supported on the top surface of the middle transition layer.

5. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 3, characterized in that: The thickness of the upper part of the special-shaped hanging brick is equal to the thickness of the middle transition layer.

6. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 1, characterized in that: The intermediate transition layer includes a transition layer located above and an arched structure located below, wherein: The transition layer includes a plurality of petal bricks forming a front transition wall and a rear transition wall, the arch structure includes a front arch wall and a rear arch wall, and the front arch wall and the rear arch wall each include a plurality of arch bricks, a vaulted door brick in the middle, and arch foot bricks on both sides.

7. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 6, characterized in that: The arch door brick is designed with a slot structure to form a lock to prevent the refractory material from shrinking and falling when it is cold.

8. The self-locking non-water-cooled load-bearing wall of the roasting machine according to claim 6, characterized in that: The upper and lower surfaces of the arched brick are both arc-shaped.

9. The self-locking non-water-cooled load-bearing wall of a roasting machine according to any one of claims 1 to 8, characterized in that: The partition wall structure comprises a plurality of brick row structures arranged in a staggered manner, and each brick row structure comprises a plurality of bottom thin hanging bricks or a plurality of bottom thin hanging bricks and half of thin hanging bricks.

10. A roasting machine, characterized in that: A self-locking, water-free load-bearing wall comprising a roasting machine as described in any one of claims 1 to 9.

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