Furnace bottom prefabricated part of smelting furnace
By designing prefabricated furnace bottom components, the construction process of the smelting furnace bottom was simplified, the structural instability caused by on-site formwork and casting was solved, and an efficient and stable smelting process and product quality were achieved.
Patent Information
- Application Number
- CN202422522874.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing process of on-site formwork construction, casting, and demolding of the working layer at the bottom of the smelting furnace is cumbersome, resulting in long working hours, low precision, and unstable structure, which affects smelting efficiency and product quality.
Design a precast furnace bottom component with a working surface, a supporting surface, an end face, and a side face, and a shrinkage guide groove on the outer periphery. The material is non-stick aluminum refractory. By standardizing the manufacturing of the precast component and assembling or casting it on site, the construction process is simplified, and the structural stability and thermal stress resistance are ensured.
It simplifies the construction process, improves the structural stability and service life of the furnace bottom precast components, reduces the risk of leakage, and enhances smelting efficiency and product quality.
Smart Images
Figure CN223448935U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to smelting furnace forming field especially relates to a smelting furnace's furnace bottom prefabricated part. BACKGROUND
[0002] The smelting furnace is a new type of high-efficiency energy-saving furnace developed according to the aluminum smelting process, which can well meet the requirements of the aluminum smelting process, such as strict alloy composition, discontinuous production, large single furnace capacity, etc., achieving the effects of reducing consumption, reducing burning loss, improving product quality, reducing labor intensity, improving labor conditions and improving production efficiency, and being suitable for intermittent operation, smelting with many alloying and return materials. The furnace bottom part of the commonly used aluminum smelting furnace is composed of a working layer, a seepage prevention layer and a heat preservation layer. Because the working layer is directly in contact with the high-temperature aluminum liquid, its performance and construction method are particularly important.
[0003] The working layer of the conventional furnace bottom is usually made by pouring material into the mold after blocking and supporting the mold on site, waiting for the poured material to solidify and then removing the mold. The steps of on-site supporting, waiting for the poured material to solidify and removing the support are complicated, time-consuming, and due to differences in pouring methods of different workers, construction conditions between workers and construction environment, there may be uneven structure at different positions of the furnace bottom, which may further cause instability of the furnace bottom or even the whole furnace body. UTILITY MODEL CONTENTS
[0004] To solve the problem of long time, low precision and unstable structure of the existing furnace bottom working layer pouring material, the utility model provides a smelting furnace furnace bottom prefabricated part.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A smelting furnace furnace bottom prefabricated part for laying and forming the working layer of the smelting furnace furnace bottom, the top of the furnace bottom prefabricated part is provided with a working surface, the bottom of the furnace bottom prefabricated part is provided with a supporting surface, the front and rear ends of the furnace bottom prefabricated part are provided with two end surfaces, and the left and right sides of the furnace bottom prefabricated part are provided with two side surfaces, and the working surface and the supporting surface are parallel to each other.
[0007] A circle of contraction guide grooves is arranged along the horizontal direction around the outer periphery of the furnace bottom prefabricated part, and the contraction guide grooves are concave inward.
[0008] Preferably, the furnace bottom prefabricated part is of rectangular structure, the two end surfaces are parallel to each other, and the end surfaces are perpendicular to the working surface and the supporting surface respectively, the two side surfaces are parallel to each other, and the side surfaces are perpendicular to the working surface and the supporting surface respectively.
[0009] The shrinkage guide groove is arranged in the middle of the end surface, the shrinkage guide groove is arranged in the middle of the side surface, and the front view, rear view, left view and right view of the furnace bottom prefabricated part are in the shape of an "I".
[0010] Preferably, the vertical cross-section of the contraction guide groove is trapezoidal, the top wall of the contraction guide groove is inclined from top to bottom and from outside to inside, the bottom wall of the contraction guide groove is inclined from top to bottom and from inside to outside, the upper and lower ends of the groove side walls of the contraction guide groove are respectively connected to the groove top wall and the groove bottom wall, and the groove side walls are respectively perpendicular to the working surface and the support surface.
[0011] Preferably, the ratio of the slot opening height h of the shrinkage guide slot to the height of the furnace bottom preform is: H=1 / 3-1 / 2.
[0012] Preferably, the angle α between the groove top wall and the horizontal line is 10°-45°.
[0013] Preferably, the angle β between the bottom wall of the groove and the horizontal line is 10°-20°.
[0014] Preferably, the height H of the furnace bottom prefabricated part is 200 mm-300 mm, and the length and width of the furnace bottom prefabricated part are 400 mm-900 mm.
[0015] Preferably, the furnace bottom prefabricated part is made of a non-aluminum refractory material.
[0016] Compared with the prior art, one of the above technical solutions has the following beneficial effects:
[0017] By designing the furnace bottom prefabricated parts of this scheme, tedious steps such as on-site cutting of wood blocks, supporting formwork, pouring, waiting for solidification, and removing formwork are avoided, thereby simplifying the construction process and shortening the construction period. At the same time, the furnace bottom prefabricated parts are arranged so that the top working surface and the bottom supporting surface are parallel to each other, thereby ensuring the structural stability of the furnace bottom prefabricated parts. A circle of inwardly concave shrinkage guide grooves is arranged in the horizontal direction on the outer periphery of the furnace bottom prefabricated parts, which can effectively avoid the possibility of aluminum liquid leaking from the furnace bottom when used in a smelting furnace. It has the advantages of uniform structure, simple construction, shortened construction period, and improved furnace bottom stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Fig. 1 It is a structural diagram of an embodiment of the utility model;
[0019] Fig. 2 It is a structural diagram of an embodiment of the utility model;
[0020] Fig. 3 It is a side view of an embodiment of the utility model.
[0021] Wherein: the furnace bottom preform 10, the working surface 11, the supporting surface 12, the end surface 13, the side surface 14, the shrinkage guide groove 100, the groove top wall 101, the groove bottom wall 102 and the groove side wall 103. DETAILED DESCRIPTION
[0022] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.
[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0024] In addition, the terms "first", "second" and "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" and "third" can explicitly or implicitly include one or more of the features.
[0025] It should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0026] The embodiments of the present application are described below in conjunction with the accompanying drawings Figs. 1 to 3 The technical scheme of the present application is further illustrated by the specific embodiments.
[0027] A furnace bottom preform of a smelting furnace is used to lay and form a working layer of a furnace bottom of a smelting furnace, the top of the furnace bottom preform 10 is provided with a working surface 11, the bottom of the furnace bottom preform 10 is provided with a supporting surface 12, the front and rear ends of the furnace bottom preform 10 are provided with two end surfaces 13, the left and right sides of the furnace bottom preform 10 are provided with two side surfaces 14, and the working surface 11 and the supporting surface 12 are parallel to each other.
[0028] The outer periphery of the furnace bottom preform 10 is provided with a ring of shrinkage guide grooves 100 in the horizontal direction, which are concave inward.
[0029] The top of the furnace bottom preform 10 is provided with a working surface 11, the bottom is provided with a supporting surface 12, the front and rear ends are provided with end surfaces 13, and the left and right sides are provided with side surfaces 14, which ensure the basic shape and size of the furnace bottom preform 10 and facilitate laying in the smelting furnace. The working surface 11 and the supporting surface 12 are parallel to each other, which ensures the stability of the furnace bottom preform 10 during laying. The outer periphery of the furnace bottom preform 10 is provided with a ring of inwardly concave shrinkage guide grooves 100 in the horizontal direction, which helps to provide a certain buffer space when the furnace bottom preform 10 is heated and expanded, reduces the pressure and thermal stress of the furnace bottom preform 10, prevents the furnace bottom preform from cracking or deforming due to thermal expansion, and thus improves the overall stability and service life of the furnace bottom. In addition, the design of the shrinkage guide grooves 100 also reduces the possibility of leakage of the aluminum liquid from the furnace bottom. If the four sides of the furnace bottom preform 10 are not provided with shrinkage guide grooves 100 but are vertical end surfaces and side surfaces, the aluminum liquid will flow directly along the vertical plane of the end surface or side surface to the supporting surface 12 (bottom surface) of the furnace bottom preform 10; and if the shrinkage guide grooves 100 are provided, the flow path of the aluminum liquid is extended, and the aluminum liquid flowing through the shrinkage guide grooves 100 can be temporarily stored in the shrinkage guide grooves 100, and in this process the aluminum liquid gradually solidifies, thereby avoiding leakage of the aluminum liquid to the bottom of the furnace bottom preform 10.
[0030] It is worth noting that the furnace bottom preform 10 of the present scheme is prepared from a steel mold. The furnace bottom preform 10 can be prepared and then taken to the construction site for assembly and installation of the furnace bottom of the smelting furnace, or the steel mold can be taken to the construction site and then poured and formed after the laying mold is placed according to the needs. The first method is to transport the solidified and formed furnace bottom preform 10 to the construction site, place the furnace bottom preform 10 according to the design drawing, pour anti-seepage material in the gap between adjacent furnace bottom preforms 10, make the working surface of the furnace bottom flush, and wait for the anti-seepage material to solidify to complete the installation of the furnace bottom. The second method is to place the steel mold according to the design drawing, pour the material into the mold, and then disassemble the steel mold and recycle the steel mold after the material solidifies; similarly, after disassembling the steel mold, pour the anti-seepage material in the gap between adjacent furnace bottom preforms 10 until the working surface of the furnace bottom is flush, and wait for the anti-seepage material to solidify to complete the installation of the furnace bottom.
[0031] Both of these methods are more efficient than the complex and time-consuming on-site steps of mold support, pouring, waiting for solidification, and demolding. While the latter method also requires placing a steel mold before pouring the furnace bottom prefabricated components on-site, eliminating the need for on-site wood cutting and mold assembly improves efficiency and mitigates the large errors between different castings. Furthermore, the support surface 12 of the furnace bottom prefabricated components 10, cast on-site using the steel mold, is fixedly connected to the bottom of the smelting furnace at the construction site, further ensuring their stability.
[0032] The guaranteed quality of the furnace bottom working layer and its uniform and stable structure help improve thermal efficiency during aluminum smelting, reduce heat loss, and thus enhance smelting efficiency. At the same time, the stable furnace bottom structure also helps maintain uniform temperature distribution within the furnace, improving product quality.
[0033] Furthermore, the furnace bottom preform 10 is a rectangular structure, the two end surfaces 13 are parallel to each other, and the end surfaces 13 are respectively perpendicular to the working surface 11 and the supporting surface 12, and the two side surfaces 14 are parallel to each other, and the side surfaces 14 are respectively perpendicular to the working surface 11 and the supporting surface 12;
[0034] The shrinkage guide groove 100 is provided in the middle of the end surface 13 , and the shrinkage guide groove 100 is provided in the middle of the side surface 14 . The front view, rear view, left view and right view of the furnace bottom preform 10 are in the shape of an “I”.
[0035] The furnace bottom prefabricated part 10 adopts a rectangular structure, which ensures the geometric stability and installation accuracy of the furnace bottom prefabricated part 10. The end face 13 and the side face 14 are perpendicular to the working surface 11 and the supporting surface 12 respectively, so that the furnace bottom prefabricated part 10 can fit tightly when laid, reduce gaps, and improve the stability of the overall structure. The shrinkage guide groove 100 is provided in the middle of the end face 13 and the side face 14. Through this design, the furnace bottom prefabricated part 10 can effectively release stress when it expands due to heat, preventing the furnace bottom prefabricated part 10 from deforming or cracking. The front view, rear view, left view and right view of the furnace bottom prefabricated part 10 are designed in the shape of an "I", which increases the bending strength and rigidity of the furnace bottom prefabricated part 10, making it more adaptable to working requirements in high temperature environments. At the same time, the furnace bottom prefabricated part 10 has good support and stability in all directions, further improving the service life and reliability of the furnace bottom prefabricated part 10.
[0036] Further, the vertical section of the shrinkage guide groove 100 is trapezoidal, the groove top wall 101 of the shrinkage guide groove 100 is arranged from outside to inside from top to bottom, the groove bottom wall 102 of the shrinkage guide groove 100 is arranged from inside to outside from top to bottom, and the upper and lower ends of the groove side wall 103 of the shrinkage guide groove 100 are connected with the groove top wall 101 and the groove bottom wall 102 respectively, and the groove side wall 103 is perpendicular to the working surface 11 and the supporting surface 12.
[0037] The vertical section of the shrinkage guide groove 100 is designed to be trapezoidal, the groove top wall 101 is arranged from outside to inside from top to bottom, and the groove bottom wall 102 is arranged from inside to outside from top to bottom, so that the furnace bottom preform 10 can generate inward extrusion force when subjected to vertical pressure, thereby enhancing the structural strength of the furnace bottom preform 10; at the same time, it can effectively disperse and relieve thermal stress, prevent the furnace bottom preform from cracking or deforming due to thermal expansion and contraction in a high-temperature environment.
[0038] Through the inclined arrangement of the groove top wall 101 and the groove bottom wall 102, the thermal stress can be effectively dispersed and relieved, and the furnace bottom preform 10 can be prevented from cracking or deforming due to thermal expansion and contraction in a high-temperature environment. The design that the groove side wall 103 is perpendicular to the working surface 11 and the supporting surface 12 ensures that the shrinkage guide groove 100 can uniformly distribute stress when stressed, further improving the stability and durability of the furnace bottom preform 10. Through the mutual cooperation of these technical features, the problem of structural damage of the furnace bottom preform caused by thermal stress in the use process is solved, and the service life and stability are significantly improved.
[0039] In addition, the bending path of the groove top wall 101, the groove side wall 103 and the groove bottom wall 102 of the shrinkage guide groove 100 further increases the flow path of the leaked aluminum liquid, provides longer time for aluminum liquid solidification, and avoids the risk of aluminum liquid flowing vertically from the working surface 11 to the supporting surface through the end surface 13 or the side surface 14.
[0040] Further, the ratio of the groove opening height h of the shrinkage guide groove 100 to the height H of the furnace bottom preform 10 is h:H=1 / 3-1 / 2.
[0041] By setting a reasonable ratio of the groove opening height h of the shrinkage guide groove 100 to the height H of the furnace bottom preform 10, it can be ensured that the shrinkage guide groove 100 will not excessively weaken the overall structural strength of the furnace bottom preform 10 when providing necessary thermal stress dispersion. By setting the ratio of the groove opening height h of the shrinkage guide groove 100 to the height H of the furnace bottom preform 10 to be between 1 / 3 and 1 / 2, the size of the shrinkage guide groove 100 can be effectively controlled, thereby providing sufficient buffer space when the furnace bottom preform 10 is heated and expanded or contracted; it can improve the ability of the furnace bottom preform 10 to resist thermal stress and mechanical stress in a high-temperature environment, and reduce structural damage caused by thermal expansion and contraction.
[0042] Further, the angle a between the groove top wall 101 and the horizontal line is 10°-45°.
[0043] By designing the angle a between the groove top wall 101 and the horizontal line to be between 10°-45°, on the one hand, the stress concentration problem caused by thermal expansion and cold shrinkage of the furnace bottom preform 10 during use can be effectively dispersed and alleviated, so that the groove top wall 101 can better adapt to deformation during thermal expansion and cold shrinkage, thereby reducing stress concentration and avoiding cracking or damage of the furnace bottom preform, improving its service life and stability. On the other hand, the inclination angle of the groove top wall 101 can affect the flow path and flow rate of the leaked aluminum liquid, so that the aluminum liquid is solidified during the flow process, solving the problem of aluminum liquid leakage at the bottom of the smelting furnace.
[0044] Further, the angle β between the groove bottom wall 102 and the horizontal line is 10°-20°.
[0045] By designing the angle β between the groove bottom wall 102 and the horizontal line to be between 10°-20°, on the one hand, the stress concentration problem caused by thermal expansion and cold shrinkage of the furnace bottom preform 10 during use can be effectively dispersed and alleviated, so that the groove bottom wall 102 can better adapt to deformation during thermal expansion and cold shrinkage, thereby reducing stress concentration and avoiding cracking or damage of the furnace bottom preform, improving its service life and stability. On the other hand, the groove bottom wall 102 is located at the bottom of the groove, and the inclination angle is set to be relatively gentle, which can slow down the flow rate of the aluminum liquid, so that the aluminum liquid is stored in the contraction guide groove 100 as much as possible without flowing to the bottom, providing more time for the solidification of the aluminum liquid, solving the problem of aluminum liquid leakage at the bottom of the smelting furnace.
[0046] Further, the height H of the furnace bottom preform 10 is 200mm-300mm, and the length and width of the furnace bottom preform 10 are 400mm-900mm.
[0047] By setting the height H (200mm-300mm) and the length and width (400mm-900mm) of the furnace bottom prefabricated part 10 to specific ranges, the standardization and modularization of the furnace bottom prefabricated part 10 are realized. This not only facilitates the production and manufacturing of the furnace bottom prefabricated part 10, but also facilitates the rapid and accurate laying and installation on the construction site. The standardized furnace bottom prefabricated part 10 can reduce errors and rework during construction and improve construction efficiency. The height range of the furnace bottom prefabricated part 10 is 200mm-300mm, which can ensure that the furnace bottom prefabricated part 10 is not easily deformed or damaged when subjected to high temperature and heavy pressure in the smelting furnace. The length and width range of the furnace bottom prefabricated part 10 is 400mm-900mm, which ensures that the prefabricated part can cover enough furnace bottom area, and is convenient for installation and replacement. Reasonable size design helps to enhance the structural stability of the furnace bottom prefabricated part 10. The height and aspect ratio within this range enable the furnace bottom prefabricated part 10 to maintain sufficient strength and stiffness when subjected to high temperature and mechanical stress, reducing the risk of deformation and cracking.
[0048] Further, the material of the furnace bottom prefabricated part 10 is aluminum-resistant refractory material.
[0049] The furnace bottom prefabricated part 10 uses aluminum-resistant refractory material, which has high strength and fire resistance and can remain stable in high temperature environment without being easily damaged. At the same time, the aluminum-resistant property can prevent the aluminum liquid from adhering to the furnace bottom during smelting, reducing the frequency of cleaning and maintenance, and improving the working efficiency and service life of the smelting furnace. Through the application of this material, the problem of easy damage of the smelting furnace bottom and adhesion of the aluminum liquid during high-temperature smelting is solved, ensuring the stable operation of the smelting furnace.
[0050] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only to explain the principles of the present application, and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanation here, those skilled in the art can think of other specific embodiments of the present application without creative labor, and these embodiments will fall within the scope of protection of the present application.
Claims
1. A prefabricated part for the bottom of a smelting furnace, used for laying a working layer to form the bottom of a smelting furnace, characterized by: The top of the furnace bottom prefabricated part is provided with a working surface, the bottom of the furnace bottom prefabricated part is provided with a supporting surface, the front and rear ends of the furnace bottom prefabricated part are provided with two end surfaces, the left and right sides of the furnace bottom prefabricated part are provided with two side surfaces, and the working surface and the supporting surface are parallel to each other; The outer periphery of the furnace bottom prefabricated part is provided with a circle of shrinkage guide grooves in the horizontal direction, and the shrinkage guide grooves are concave inwards; The vertical cross-section of the contraction guide groove is trapezoidal, the top wall of the contraction guide groove is inclined from top to bottom and from outside to inside, the bottom wall of the contraction guide groove is inclined from top to bottom and from inside to outside, the upper and lower ends of the groove side walls of the contraction guide groove are respectively connected to the groove top wall and the groove bottom wall, and the groove side walls are respectively perpendicular to the working surface and the supporting surface.
2. The furnace bottom prefabricated part of a smelting furnace according to claim 1, characterized in that: The furnace bottom prefabricated member is a rectangular structure, the two end surfaces are parallel to each other, and the end surfaces are respectively perpendicular to the working surface and the supporting surface, and the two side surfaces are parallel to each other, and the side surfaces are respectively perpendicular to the working surface and the supporting surface; The shrinkage guide groove is arranged in the middle of the end surface, the shrinkage guide groove is arranged in the middle of the side surface, and the front view, rear view, left view and right view of the furnace bottom prefabricated part are in the shape of an "I".
3. The furnace bottom prefabricated part of a smelting furnace according to claim 2, characterized in that: The ratio h of the slot opening height of the shrinkage guide slot to the height of the furnace bottom preform is: H=1 / 3-1 / 2.
4. The furnace bottom prefabricated part of a smelting furnace according to claim 3, characterized in that: The included angle α between the top wall of the groove and the horizontal line is 10°-45°.
5. The furnace bottom prefabricated part of a smelting furnace according to claim 3, characterized in that: The angle β between the bottom wall of the groove and the horizontal line is 10°-20°.
6. The furnace bottom prefabricated part of a smelting furnace according to any one of claims 2 to 5, characterized in that: The height H of the furnace bottom prefabricated part is 200 mm to 300 mm, and the length and width of the furnace bottom prefabricated part are 400 mm to 900 mm.
7. The furnace bottom prefabricated part of a smelting furnace according to any one of claims 1 to 5, characterized in that: The furnace bottom prefabricated part is made of non-stick aluminum refractory material.