A furnace lining and a rotary kiln thereof

Abstract

The utility model discloses a furnace kiln lining and rotary kiln, overcome the defect that the existing furnace kiln lining is easy to deform, invalid, the furnace kiln lining sets up in the rotary kiln body, include: the body of board shape, two installation wings, connect respectively in the two sides of the body along the rotary kiln axial, and be suitable for the inner wall camber of rotary kiln, every installation wing is equipped with at least one mounting hole, two installation wings are fixed in the inner wall of rotary kiln through the fastener of mounting hole, the rotary kiln made, including kiln body and the lining of setting up in kiln body inner wall, the lining is by the lining of a plurality of above -mentioned furnace kiln along the circumferential direction and / or axial direction of kiln body splicing arrangement, the utility model body axial two sides set up the installation wing of taking mounting hole, and installation structure is simple and reliable, and the degree of modularization is high, and installation is convenient, when partial damage can be quickly replaced alone, greatly reduced maintenance cost and downtime.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical and building materials equipment technology, specifically to a furnace lining plate for the inner wall of a rotary kiln and a rotary kiln containing the lining plate. Background Technology

[0002] Rotary kilns are calcining equipment widely used in industries such as cement, metallurgy, and chemicals. Their interiors are typically lined with refractory materials or wear-resistant plates to protect the kiln's steel structure from high temperatures, material erosion, and chemical corrosion. Traditional linings are mostly made of castable refractory or brickwork, which have disadvantages such as long construction periods, inconvenient maintenance, and the need for large-scale repairs for localized damage.

[0003] To overcome the aforementioned problems, modular liner structures have emerged. These liners are installed on the inner wall of the kiln using fasteners. However, existing liner structures still have shortcomings in terms of installation strength, sealing performance, and inherent stability. For example, fasteners exposed to high temperatures and material environments for extended periods are prone to damage and failure; liners are susceptible to loosening or displacement during kiln rotation; furthermore, an unreasonable stress-bearing structure of the liner may lead to stress concentration, affecting its service life.

[0004] Therefore, there is an urgent need for a furnace lining plate that is securely installed, has good sealing properties, is structurally stable, and is easy to replace. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a furnace lining plate that is reliable in installation, structurally stable, and effectively protects fasteners.

[0006] Another objective of this invention is to provide a rotary kiln employing the aforementioned furnace lining plate.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A furnace lining plate for installation on the inner wall of a rotary kiln, characterized in that it comprises:

[0009] plate-like body;

[0010] Two mounting wings are respectively connected to both sides of the main body along the axis of the rotary kiln and are adapted to fit the inner wall curved surface of the rotary kiln. Each mounting wing has at least one mounting hole.

[0011] The two mounting wings are fixed to the inner wall of the rotary kiln by fasteners passing through the mounting holes.

[0012] Furthermore, a retaining wall protruding away from the inner wall of the rotary kiln is provided around the mounting hole to seal and protect the fasteners.

[0013] Furthermore, the mounting wings on the upper part of the main body are arranged in pairs, and the pairs of mounting wings are connected in the middle by a recessed notch.

[0014] Furthermore, the main body is provided with ribs integrally connected to the mounting wing.

[0015] Furthermore, the main body is integrally connected to the mounting wing at an end that gradually thickens towards the furnace wall from away from the center of the rotary kiln.

[0016] Furthermore, the body, mounting wings, and bulge are formed into an integral modular component by casting.

[0017] Furthermore, the fastener is forged from nickel-containing heat-resistant steel after casting.

[0018] A rotary kiln includes a kiln body and a lining disposed on the inner wall of the kiln body, characterized in that the lining is composed of multiple kiln lining plates as described above, spliced ​​together along the circumferential direction and / or axial direction of the kiln body.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0020] 1. This utility model provides mounting wings with mounting holes on both sides of the main body, which allows the liner to be firmly anchored to the kiln body by fasteners. The installation structure is simple and reliable, and effectively prevents the liner from loosening or falling off when the kiln body rotates.

[0021] 2. By setting raised bulges around the mounting holes, a protective cavity can be formed to enclose the head of the fastener. This not only avoids direct erosion by materials and high-temperature airflow, but also achieves a good seal by filling with sealing material, significantly improving the service life of the fastener and the sealing performance of the system.

[0022] 3. The mounting wings on the upper part of the main body are arranged in pairs on the left and right with a gap in the middle, which not only ensures the installation strength, but also reduces the overall weight of the liner and saves materials.

[0023] 4. The ribs integrated with the mounting wing greatly enhance the overall rigidity and deformation resistance of the liner, disperse stress, and extend service life.

[0024] 5. The main body is connected to the mounting wing through the gradually thickened end, forming a reinforced structure with a smooth transition, which further optimizes the stress distribution and improves the strength of the connection part.

[0025] 6. The rotary kiln lining constructed using the lining plate of this utility model is highly modular, easy to install, and can be quickly and individually replaced when partially damaged, which greatly reduces maintenance costs and downtime. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the furnace lining plate of this utility model.

[0027] Figure 2 yes Figure 1 The image shows a front view of the furnace lining.

[0028] Figure 3 yes Figure 1 The image shows a side view of the furnace lining.

[0029] Explanation of the labels in the diagram:

[0030] 1. Body; 2. Mounting wing; 3. Mounting hole; 4. Enclosure; 5. Enclosure opening; 6. Rib. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] See Figures 1 to 3 As shown, this utility model provides a preferred embodiment of a furnace lining plate. The furnace lining plate includes a plate-shaped body 1, which serves as the working surface that directly bears the scouring of materials and high temperatures, and is typically made of high-temperature resistant and wear-resistant metal or non-metal materials.

[0034] Mounting wings 2 are connected to both sides of the main body 1 along the axial direction of the rotary kiln. The mounting wings 2 are designed to conform to the curved shape of the inner wall of the rotary kiln to ensure tight contact. Each mounting wing 2 has one or more mounting holes 3. For example... Figure 1 and Figure 2 As shown, two mounting holes 3 can be opened on the paired mounting wings 2 at the top to provide a more balanced fixing force. The body 1 and the mounting wings 2 are formed into an integral module by casting.

[0035] During installation, the mounting flange 2 of the liner is fitted against the inner wall of the rotary kiln body 7, and then fasteners (such as bolts, rivets, or special anchors cast and forged from nickel-containing heat-resistant steel) are passed through the mounting holes 3 to firmly fix the liner to the kiln body. Multiple such liners can be closely spliced ​​together along the circumferential and axial directions of the kiln body to form a complete lining protective layer.

[0036] As an important improvement, a surrounding block 4 protruding away from the inner wall of the rotary kiln is provided around the mounting hole 3. This surrounding block 4 can be an annular boss integrally formed with the mounting wing 2 by casting or stamping. Its function is: first, it encloses a space to protect the head of the fastener 8 from direct impact and wear of materials; second, this structure facilitates the filling of refractory slurry or sealant after installation to achieve effective sealing of the mounting hole and prevent high-temperature flue gas or powder from leaking from the gaps and corroding the kiln body 7 and the fastener 8.

[0037] In this embodiment, as Figure 1 and Figure 2 As shown, the mounting wings 2 located on the upper part of the main body 1 (i.e. the side away from the center of the kiln body) are arranged in pairs, and the two pairs of mounting wings 2 are connected by a recessed mortise 5. This design reduces the amount of material used and the overall weight of the liner while ensuring sufficient mounting points, and also facilitates heat dissipation and stress release.

[0038] To further enhance the mechanical strength of the liner and prevent it from bending and deforming under harsh working conditions, a rib 6 is integrally connected to the mounting wing 2 on the main body 1. The rib 6 acts as a reinforcing rib and can effectively disperse and withstand the impact force and thermal stress brought by the material.

[0039] Furthermore, the main body 1 is integrally connected to the mounting wing 2 at its end, and this connection end is designed to gradually thicken towards the furnace wall from the center of the rotary kiln. That is, from the working surface of the main body 1 to the root of the mounting wing 2, the thickness gradually increases, forming a smoothly transitioning reinforced area. This variable cross-section design conforms to the stress characteristics, effectively reducing stress concentration and improving the structural strength and fatigue resistance of the connection.

[0040] This utility model also provides a rotary kiln, which includes a kiln body and a lining disposed on the inner wall of the kiln body. The lining is composed of multiple kiln lining plates as described in any of the above embodiments, spliced ​​together along the circumferential and axial directions of the kiln body. This modular lining structure makes installation, maintenance, and replacement very convenient, greatly improving the operating efficiency and maintenance economy of the rotary kiln.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A furnace lining plate for installation on the inner wall of a rotary kiln, characterized in that, include: Plate-shaped body (1); Two mounting wings (2) are respectively connected to the two sides of the main body (1) along the axis of the rotary kiln and are adapted to fit the inner wall curved surface of the rotary kiln. Each mounting wing (2) has at least one mounting hole (3). The two mounting wings (2) are fixed to the inner wall of the rotary kiln by fasteners passing through the mounting holes (3).

2. The furnace lining plate according to claim 1, characterized in that, The mounting hole (3) is surrounded by a raised bulge (4) that protrudes away from the inner wall of the rotary kiln, which is used to seal and protect the fasteners.

3. The furnace lining plate according to claim 1, characterized in that, The mounting wings (2) on the upper part of the main body (1) are arranged in pairs on the left and right, and the pairs of mounting wings (2) are connected in the middle by a recessed notch (5).

4. The furnace lining plate according to claim 3, characterized in that, The main body (1) is provided with ribs (6) that are integrally connected with the mounting wing (2).

5. The furnace lining plate according to any one of claims 1 to 4, characterized in that, The main body (1) is integrally connected to the mounting wing (2) at the end that gradually thickens towards the furnace wall away from the center of the rotary kiln.

6. The furnace lining plate according to any one of claims 1 to 4, characterized in that, The main body (1), mounting wing (2) and bulwark (4) are formed into an integral modular component by casting.

7. The furnace lining plate according to any one of claims 1 to 4, characterized in that, The fasteners are forged from nickel-containing heat-resistant steel after casting.

8. A rotary kiln, comprising a kiln body and a lining disposed on the inner wall of the kiln body, characterized in that, The lining is composed of multiple kiln lining plates as described in any one of claims 1-7, spliced ​​together along the circumferential and / or axial direction of the kiln body.

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