Rotary kiln for cement production

Abstract

The utility model provides a rotary kiln for cement production, and relates to the technical field of rotary kilns.The rotary kiln comprises a barrel, a lining is arranged in the barrel, fixing assemblies connected with the barrel are arranged at the two ends of the lining, a wear-resistant coating is arranged on the inner surface of the lining, a plurality of supporting pieces are arranged between the lining and the barrel, and the space between the lining and the barrel is divided into a plurality of containing cavities through the supporting pieces; high-temperature materials are prevented from making direct contact with the barrel through the lining, the situation that the interior of the barrel is thinned due to abrasion and corrosion is avoided, the strength and the sealing performance of equipment are guaranteed, abrasion of the lining is reduced through the abrasion-resistant coating, the service life of the lining is prolonged, the lining is supported through the supporting piece, and the service life of the lining is prolonged. And the barrel is further protected through the refractory material layer, and the refractory material layer can play a certain role in supporting the lining, so that the performance of equipment is effectively guaranteed, and the quality of a final product is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of rotary kilns, and in particular to a rotary kiln for cement production. Background Art

[0002] The rotary kiln is a key equipment for calcining cement clinker. It completes the calcination process of clinker by rotation. The working principle of the rotary kiln is to feed raw materials (mainly limestone, clay, etc.) into the kiln. As the kiln body rotates, the raw materials gradually move to the high-temperature area, where a series of physical and chemical reactions occur, and finally clinker is formed. During the calcination process, the fuel (usually pulverized coal or natural gas) burns at the kiln head, and the high-temperature flue gas generated passes through the clinker layer to provide the required heat energy.

[0003] In the prior art, one end of the cylinder of the rotary kiln is connected to a feeding device with a discharge port, and the other end of the cylinder is connected to an exhaust gas treatment device. During the use of the rotary kiln, a driving device drives a roller on the cylinder to slowly rotate the cylinder at a certain speed, so that the raw material and the high-temperature flue gas complete the calcination reaction in the cylinder. However, long-term high temperature and material wear will cause wear and corrosion inside the cylinder, causing the cylinder of the rotary kiln to become thinner, affecting the strength and sealing of the equipment, thereby reducing the performance of the rotary kiln, and further affecting the quality of the final product. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a rotary kiln for cement production, which can solve the technical problem that the performance of the rotary kiln is reduced and the product quality is affected due to wear and corrosion inside the rotary kiln cylinder.

[0005] An embodiment of the present application provides a rotary kiln for cement production, comprising a cylinder, a liner provided in the cylinder, fixing components connected to the cylinder at both ends of the liner, a wear-resistant coating provided on the inner surface of the liner, a plurality of supports provided between the liner and the cylinder, the supports dividing the space between the liner and the cylinder into a plurality of accommodating cavities, and the accommodating cavities being filled with a refractory material layer.

[0006] Furthermore, the fixing assembly includes a first connecting member, a second connecting member and a bolt, the first connecting member and the second connecting member are both annular, the outer ring side of the first connecting member is fixed to the inner wall of the cylinder, the outer ring side of the second connecting member is fixed to the outer surface of the bushing, the first connecting member is evenly provided with a plurality of through holes, the second connecting member is provided with threaded holes corresponding to the through holes, and the bolt passes through the through holes and is threadedly connected to the threaded holes.

[0007] Furthermore, a positioning block is provided on one side of the first connecting member, and a positioning strip is provided on the second connecting member. When the positioning strip abuts against one side of the positioning block, the through hole and the threaded hole are located on the same center line.

[0008] Furthermore, the support member is annular, the outer ring side of the support member is fixedly connected to the inner wall of the cylinder, and the inner ring side of the support member abuts against the outer surface of the bushing.

[0009] Furthermore, the outer wall fixed sleeve of the cylinder is provided with a plurality of rolling rings, and a plurality of teeth are evenly arranged on the rolling rings.

[0010] Furthermore, the refractory material layer is formed by stacking refractory bricks.

[0011] Beneficial effects of the utility model:

[0012] The utility model provides a bushing in the cylinder, which prevents high-temperature materials from directly contacting the cylinder, avoids the inside of the cylinder from becoming thinner due to wear and corrosion, and ensures the strength and sealing of the equipment. The inner surface of the bushing is provided with a wear-resistant coating, which reduces the wear of the bushing and extends the service life of the bushing. A plurality of support members are provided between the bushing and the cylinder, and the support members divide the space between the bushing and the cylinder into a plurality of accommodating cavities, which are filled with refractory material layers, and the bushing is supported by the support members to enhance the structural strength, and the cylinder is further protected by the refractory material layer, and the refractory material layer can play a certain supporting role on the bushing, effectively ensuring the performance of the equipment and the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0015] Figure 2 It is a cross-sectional view of some embodiments of the present application;

[0016] Figure 3 It is a schematic diagram of the structure of the fixing assembly in some embodiments of the present application;

[0017] The reference numerals are:

[0018] 1. Cylinder; 2. Bushing; 3. Fixing assembly; 31. First connecting piece; 311. Positioning block; 32. Second connecting piece; 321. Positioning strip; 33. Bolt; 4. Wear-resistant coating; 5. Support member; 6. Refractory material layer; 7. Rolling ring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. Specific embodiment:

[0026] like Figure 1-3 As shown, the present application provides a rotary kiln for cement production, including a cylinder 1, a liner 2 is arranged in the cylinder 1, and the arrangement of the liner 2 prevents high-temperature materials from directly contacting the cylinder 1, and avoids the inside of the cylinder 1 from becoming thinner due to wear and corrosion, thereby ensuring the strength and sealing of the equipment. Both ends of the liner 2 are provided with fixing components 3 connected to the cylinder 1, and the liner 2 is installed in the cylinder 1 through the fixing components 3. The inner surface of the liner 2 is provided with a wear-resistant coating 4, and the wear of the liner 2 is reduced by the wear-resistant coating 4, and the service life of the liner 2 is extended. A plurality of support members 5 are arranged between the liner 2 and the cylinder 1, and the support members 5 divide the space between the liner 2 and the cylinder 1 into a plurality of accommodating cavities, and the accommodating cavities are filled with a refractory material layer 6, and the liner 2 is supported by the support members 5 to enhance the structural strength, and the cylinder 1 is further protected by the refractory material layer 6, and the refractory material layer 6 can play a certain supporting role for the liner 2, effectively ensuring the performance of the equipment and the quality of the final product.

[0027] like Figure 3 As shown, the fixing assembly 3 includes a first connecting member 31, a second connecting member 32 and a bolt 33. The first connecting member 31 and the second connecting member 32 are both annular. The outer ring side of the first connecting member 31 is fixed on the inner wall of the cylinder 1, and the outer ring side of the second connecting member 32 is fixed on the outer surface of the bushing 2. A plurality of through holes are evenly arranged on the first connecting member 31, and the second connecting member 32 is provided with threaded holes corresponding to the through holes. The bolt 33 passes through the through holes and is threadedly connected with the threaded holes. Specifically, in this embodiment, the outer ring side of the first connecting member 31 is welded to the inner wall of the cylinder 1, and the second connecting member 32 is integrally formed with the bushing 2 to make the structure stable.

[0028] like Figure 3 As shown, a positioning block 311 is provided on one side of the first connecting member 31, and a positioning strip 321 is provided on the second connecting member 32. When the positioning strip 321 abuts against one side of the positioning block 311, the through hole and the threaded hole are on the same center line, which facilitates the bolt 33 to pass through the through hole and connect with the threaded hole.

[0029] like Figure 2As shown, the support member 5 is annular, and the outer ring side of the support member 5 is fixedly connected to the inner wall of the cylinder 1, and the inner ring side of the support member 5 abuts against the outer surface of the bushing 2. The outer surface of the bushing 2 is supported by the annular support member 5, so that the support is stable and can prevent the cylinder 1 from shifting.

[0030] like Figure 1 As shown, the outer wall of the cylinder 1 is fixedly sleeved with a plurality of rolling rings 7, and the rolling rings 7 are evenly ringed with a plurality of teeth. When in use, one end of the cylinder 1 is connected to the feeding device in the prior art, and the other end of the cylinder 1 is connected to the exhaust gas treatment device in the prior art. The rolling rings 7 are driven by the driving device in the prior art to rotate the cylinder 1, so that the raw material and the high-temperature flue gas complete the calcination reaction in the cylinder 1.

[0031] like Figure 2 As shown, the refractory material layer 6 is formed by stacking refractory bricks. The refractory bricks can withstand high temperatures and are not easily deformed, melted or broken in high temperature environments. They can effectively extend the service life of the equipment and have good thermal insulation properties, which can improve the utilization efficiency of heat.

[0032] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary kiln for cement production, characterized in that: It includes a cylinder body, a bushing is arranged in the cylinder body, fixing components connected to the cylinder body are arranged at both ends of the bushing, a wear-resistant coating is arranged on the inner surface of the bushing, a plurality of supports are arranged between the bushing and the cylinder body, the supports divide the space between the bushing and the cylinder body into a plurality of accommodating cavities, and the accommodating cavities are filled with a refractory material layer.

2. A rotary kiln for cement production according to claim 1, characterized in that: The fixing assembly includes a first connecting member, a second connecting member and a bolt. The first connecting member and the second connecting member are both annular. The outer ring side of the first connecting member is fixed to the inner wall of the cylinder, and the outer ring side of the second connecting member is fixed to the outer surface of the bushing. The first connecting member is evenly provided with a plurality of through holes, and the second connecting member is provided with threaded holes corresponding to the through holes. The bolt passes through the through holes and is threadedly connected to the threaded holes.

3. A rotary kiln for cement production according to claim 2, characterized in that: A positioning block is provided on one side of the first connecting member, and a positioning strip is provided on the second connecting member. When the positioning strip abuts against one side of the positioning block, the through hole and the threaded hole are located on the same center line.

4. A rotary kiln for cement production according to claim 1, characterized in that: The support member is annular, the outer ring side of the support member is fixedly connected to the inner wall of the cylinder, and the inner ring side of the support member abuts against the outer surface of the bushing.

5. A rotary kiln for cement production according to claim 1, characterized in that: The outer wall of the cylinder is fixedly sleeved with a plurality of rolling rings, and the rolling rings are evenly ringed with a plurality of teeth.

6. A rotary kiln for cement production according to claim 1, characterized in that: The refractory material layer is formed by stacking refractory bricks.

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