Prefabricated structure for connecting chain grate furnace top with diffusion chimney

Abstract

The utility model relates to the technical field of chimneys, in particular to a prefabricated structure for connecting a chain grate furnace top and a diffusion chimney, which comprises a chimney body, a prefabricated layer is arranged on the inner side of the chimney body, an expansion buffer layer is arranged between the prefabricated layer and the chimney body, and the prefabricated layer comprises a plurality of prefabricated bricks placed along the circumference direction of the chimney body. By means of the design of the prefabricated layer, the chimney lining can be directly built when a chimney is manufactured, compared with a conventional pouring type chimney lining, the prefabricated bricks in the prefabricated layer are dried in the prefabricating process, on-site formwork erecting and pouring are not needed, the manufacturing efficiency is improved, and meanwhile compared with a pouring mode, the manufacturing cost is reduced. Baking is not needed after building is completed, and the risk that the refractory material is baked to burst during later baking can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chimney technical field, concretely relates to a chain grillage machine furnace top and the prefabricated structure of diffusion chimney link. BACKGROUND

[0002] In the oxidation pellet rotary kiln system, the chain grillage machine furnace top and the diffusion chimney lining combination part usually adopt the refractory castable masonry construction, the steel plate of the diffusion chimney needs to go into the refractory material of the furnace top, the masonry structure does not set the insulating layer, needs to support the module integral casting forming, and the construction is more troublesome, the lining is easy to appear the hole, peeling, baking burst, and the outer wall temperature of the diffusion chimney is higher. The steel plate of the diffusion chimney goes into the refractory material inside the furnace top, and the expansion coefficient of the refractory material is less than the expansion coefficient of the steel material under high temperature, expansion stress is easy to produce, thereby causing the cracking and peeling of the refractory castable, and the burning through phenomenon appears in long-term high-temperature operation, the service life is short, and the normal operation of the equipment is affected. SUMMARY

[0003] In order to solve the above problems, the utility model embodiment provides a kind of prefabricated structure of chain grillage machine furnace top and diffusion chimney link, can improve the masonry efficiency of chimney, and after masonry is completed, it does not need to bake, can reduce the risk that refractory material is baked burst in later baking.

[0004] The utility model embodiment for realizing the above-mentioned purpose, specifically adopt the following technical scheme: a kind of prefabricated structure of chain grillage machine furnace top and diffusion chimney link, including chimney body, the inside of the chimney body is provided with prefabricated layer, expansion buffer layer is arranged between the prefabricated layer and the chimney body, the prefabricated layer includes multiple prefabricated bricks placed along the perimeter direction of chimney body, the prefabricated brick is provided with connecting piece for connecting chimney body.

[0005] As a further improvement of the above technical solution:

[0006] The prefabricated brick includes working layer and insulation layer designed in sequence from inside to outside, and the width of the prefabricated brick gradually increases from one end close to the chimney body to the outside.

[0007] The prefabricated brick is L-shaped distribution, and the expansion buffer layer is laid on the inner side wall of the prefabricated brick.

[0008] The connecting piece includes a pre-embedded rod arranged in the insulation layer, one end of the pre-embedded rod is provided with a pullout-resistant rod located in the working layer, and the other end is provided with an anchor joint extending to the outside of the prefabricated brick.

[0009] The pullout-resistant rod is integrally formed with the pre-embedded rod, and the pullout-resistant rod is designed to be inclined and forms an angle of 120-150 degrees with the pre-embedded rod.

[0010] The beneficial effect of the embodiment of the utility model discloses a chain grate furnace top and the prefabricated structure of the diffusion chimney link, including chimney body, the inside of chimney body is equipped with prefabricated layer, is equipped with expansion buffer layer between prefabricated layer and chimney body, and the prefabricated layer includes a plurality of along the circumference direction of chimney body and places the prefabricated brick, is equipped with the connecting piece for connecting chimney body in prefabricated brick, through the design of prefabricated layer, can directly carry out masonry when making chimney, compares with the conventional pouring type chimney lining, the prefabricated brick in prefabricated layer is dried in the process of prefabrication, does not need to support the pouring of on-site, improves the production efficiency, and compared with the mode of pouring, does not need to bake after masonry is completed, can reduce the risk of refractory material being baked and burst when baking later period;

[0011] The design of the heat preservation layer can effectively reduce the temperature of the outer wall of the diffusion chimney, reduce heat loss and save energy.

[0012] The expansion buffer layer between the prefabricated layer and the chimney body can buffer the expansion stress of the diffusion chimney steel structure, thereby avoiding cracking and peeling of the refractory lining caused by expansion stress and prolonging the service life of the refractory lining. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure schematic diagram of the utility model;

[0014] Figure 2 It is the front view of the prefabricated brick in the utility model;

[0015] Figure 3 It is the top view of the prefabricated brick in the utility model;

[0016] Figure 4 It is the structure schematic diagram of the connecting piece in the utility model;

[0017] Figure 5 It is the connecting structure schematic diagram of the prefabricated brick and the chimney body in the utility model.

[0018] In the drawing: 1, chimney body; 2, prefabricated layer; 3, expansion buffer layer; 4, prefabricated brick; 5, connecting piece; 6, working layer; 7, heat preservation layer; 8, embedded rod; 9, anti-pulling rod; 10, anchor joint. DETAILED DESCRIPTION

[0019] The preferred embodiments of the utility model will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model, and are not intended to limit the protection scope of the utility model.

[0020] As Figures 1-5As shown, the prefabricated structure of the chain grate furnace top and the diffusion chimney linkage of the embodiment comprises a chimney body 1, the inner side of the chimney body 1 is provided with a prefabricated layer 2, an expansion buffer layer 3 is arranged between the prefabricated layer 2 and the chimney body 1, the prefabricated layer 2 comprises a plurality of prefabricated bricks 4 arranged along the circumferential direction of the chimney body 1, the prefabricated brick 4 is provided with a connecting piece 5 for connecting the chimney body 1, through the design of the prefabricated layer 2, the prefabricated brick 4 in the prefabricated layer 2 can be directly laid when the refractory lining of the chimney is made, compared with the conventional pouring type chimney lining, the prefabricated brick 4 in the prefabricated layer 2 is dried in the prefabrication process, without the need for on-site formwork pouring, the production efficiency is improved, at the same time, compared with the pouring method, after the laying is completed, there is no need for baking, which can reduce the risk of explosion of the refractory material during the later baking.

[0021] The prefabricated brick 4 comprises a working layer 6 and a heat preservation layer 7 designed in sequence from inside to outside, the width of the prefabricated brick 4 gradually increases from one end close to the chimney body outward, which can ensure that the side walls of the adjacent two prefabricated bricks 4 are tightly fitted and reduce the generation of gaps during laying.

[0022] The prefabricated brick 4 is in L-shaped distribution, the expansion buffer layer 3 is laid on the inner side wall of the prefabricated brick 4, the expansion buffer layer 3 adopts aluminum silicate fiber paper, which can absorb expansion stress during use, avoid damage and falling of the prefabricated brick 4 due to thermal stress, and prolong the service life of the chimney.

[0023] The connecting piece 5 comprises a pre-embedded rod 8 penetrating in the heat preservation layer 7, one end of the pre-embedded rod 8 is provided with a pull-out resistant rod 9 located in the working layer 6, the pull-out resistant rod 9 can strengthen the connection strength of the working layer 6 and the heat preservation layer 7, and avoid delamination during use, the other end is provided with an anchor joint 10 extending to the outside of the prefabricated brick 4, the chimney body 1 adopts a steel structure, the anchor joint 10 adopts a metal bolt structure, which is used for connecting the chimney body 1, and can improve the connection strength of the prefabricated brick 4.

[0024] The pull-out resistant rod 9 is integrally formed with the pre-embedded rod 8, the pull-out resistant rod 9 is designed to be inclined and forms an angle of 120-150 degrees with the pre-embedded rod 8.

[0025] The production process of the scheme is as follows: first, fix the pre-embedded rod 8 in the mold, then pour the heat preservation layer 7, after it is solidified, pour the working layer 6, after curing in the mold, demold, after demolding, bake to form the prefabricated brick 4, then lay a layer of aluminum silicate fiber paper as the expansion buffer layer 3 on the inner side wall of the prefabricated brick 4, and finally connect the prefabricated brick 4 with the chimney body 1 through the anchor joint 10.

[0026] It should be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should also be noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] The term "includes" or any other similar term is intended to cover non-exclusive inclusion, so that the process, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in the process, article or equipment / device.

[0029] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

Claims

1. A prefabricated structure for linking the top of a chain grate furnace to a dispersion chimney, comprising a chimney body (1), characterised in that: The inner side of the chimney body (1) is provided with a prefabricated layer (2), and an expansion buffer layer (3) is arranged between the prefabricated layer (2) and the chimney body (1), the prefabricated layer (2) comprises a plurality of prefabricated bricks (4) arranged along the circumferential direction of the chimney body (1), and the prefabricated bricks (4) are provided with connecting pieces (5) for connecting the chimney body (1).

2. The precast structure of the link between the grate furnace roof and the dispersion chimney according to claim 1, characterized in that: The prefabricated brick (4) comprises a working layer (6) and a heat preservation layer (7) designed in sequence from inside to outside, and the width of the prefabricated brick (4) gradually increases from one end close to the chimney body (1) to the outside.

3. The precast structure of the link between the grate furnace roof and the dispersion chimney according to claim 2, characterized in that: The prefabricated brick (4) is in L-shaped distribution, and the expansion buffer layer (3) is laid on the inner side wall of the prefabricated brick (4).

4. The precast structure of the link between the grate furnace roof and the dispersion chimney according to claim 2, characterized in that: The connecting piece (5) comprises a pre-embedded rod (8) penetrating in the heat preservation layer (7), one end of the pre-embedded rod (8) is provided with a pull-out resistant rod (9) located in the working layer (6), and the other end is provided with an anchor joint (10) extending to the outside of the prefabricated brick (4).

5. The precast structure of the link between the grate furnace roof and the dispersion chimney according to claim 4, characterized in that: The pull-out resistant rod (9) is integrally formed with the pre-embedded rod (8), the pull-out resistant rod (9) is designed to be inclined, and the included angle between the pull-out resistant rod (9) and the pre-embedded rod (8) is 120-150 degrees.

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