CN221005897U - Ceramic liner of rotary kiln - Google Patents
Ceramic liner of rotary kiln Download PDFInfo
- Publication number
- CN221005897U CN221005897U CN202322776675.2U CN202322776675U CN221005897U CN 221005897 U CN221005897 U CN 221005897U CN 202322776675 U CN202322776675 U CN 202322776675U CN 221005897 U CN221005897 U CN 221005897U
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- China
- Prior art keywords
- ceramic
- heating wire
- splicing
- rotary kiln
- wire outlet
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- 239000000919 ceramic Substances 0.000 title claims abstract description 100
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 238000005485 electric heating Methods 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010304 firing Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model relates to a ceramic liner of a rotary kiln, which comprises at least one ceramic liner ring; a plurality of ceramic liner rings are spliced together in sequence; the ceramic liner ring is formed by splicing at least two ceramic splicing pieces; a plurality of heating wire placing holes are uniformly distributed in the ceramic splicing piece and are used for placing the electric heating elements; the outer walls of the end areas at the two ends of the ceramic splicing sheet are respectively provided with a first heating wire outlet and a second heating wire outlet; the bottoms of the first heating wire outlet hole and the second heating wire outlet hole are communicated with the heating wire placing hole; and the orifices of the first heating wire outlet and the second heating wire outlet are both positioned below the junction box of the rotary kiln. The utility model has the advantages of convenient installation and maintenance of the electric heating element, no leakage of the filler in the electric heating wire placing hole, no strain on the electric heating element and the like, more stable spliced body and the like.
Description
Technical Field
The utility model relates to the technical field of rotary kilns, in particular to a ceramic liner of a rotary kiln.
Background
The rotary kiln is widely applied to various industrial fields, and the inner container of the rotary kiln cylinder body generally adopts a metal inner container, but when the powder containing the magnetic substances is fired, the rotary kiln with the ceramic inner container is used for preventing the magnetic pollution of the metal inner container to the powder containing the magnetic substances, and the ceramic inner container cannot generate magnetic pollution to the materials.
However, as the size of the rotary kiln cylinder increases, the ceramic liner is required to be increased in size, the oversized ceramic liner has higher requirements on the process and firing equipment during firing, and the large-size ceramic liner has high reject ratio during firing, which leads to high cost and limits the development of the rotary kiln cylinder with the ceramic liner to the large-size direction.
In the Chinese patent of the utility model with the publication number of CN219829454U, a rotary kiln cylinder with ceramic inner containers is disclosed, at least one ceramic inner container is embedded in a cylinder shell, a plurality of ceramic inner containers are spliced together, the ceramic inner containers are formed by splicing at least 2 ceramic splicing pieces, the ceramic inner containers are divided into a plurality of ceramic splicing pieces to reduce sintering difficulty, the yield of Gao Shaozhi is improved, and the manufacturing cost is reduced.
However, in practical application, the ceramic liner still has problems, firstly, the ceramic splicing pieces relatively move due to expansion and contraction in the heating process of the rotary kiln, so that the electric heating wire placing holes of the adjacent ceramic splicing pieces are shifted at the splicing positions, and the filler in the electric heating wire placing holes leaks and pulls the electric heating wires; secondly, because the inlet holes and the outlet holes of the heating wires are arranged on a piece of ceramic splicing sheet, the heating wires are difficult to install; finally, the ceramic liner is provided with the protruding part on the end face of one ceramic splicing sheet, the end face of the other adjacent ceramic splicing sheet is provided with the concave part matched with the protruding part, and when in splicing, the protruding part is embedded in the concave part, so that the stability of the spliced body can be enhanced, but only axial limiting can be performed, but radial limiting cannot be performed.
Disclosure of utility model
Therefore, the utility model provides the ceramic liner of the rotary kiln, which mainly solves the technical problems that the ceramic liner in the prior art is difficult to install the electric heating wires, and the electric heating wire placing holes of the ceramic splicing pieces are shifted at the splicing positions to cause the filler in the electric heating wire placing holes to leak and the electric heating wires to be pulled.
In order to achieve the above object, the present utility model provides the following technical solutions:
A ceramic liner of a rotary kiln, comprising at least one ceramic liner ring; a plurality of ceramic liner rings are spliced together in sequence; the ceramic liner ring is formed by splicing at least two ceramic splicing pieces; a plurality of heating wire placing holes are uniformly distributed in the ceramic splicing piece and are used for placing the electric heating elements; the outer walls of the end areas at the two ends of the ceramic splicing sheet are respectively provided with a first heating wire outlet and a second heating wire outlet; the bottoms of the first heating wire outlet hole and the second heating wire outlet hole are communicated with the heating wire placing hole; and the orifices of the first heating wire outlet and the second heating wire outlet are both positioned below the junction box of the rotary kiln.
Preferably, a plurality of the heating wire placement holes are distributed along the axial direction of the ceramic splicing sheet.
Preferably, the outer wall of the ceramic splicing piece is at least provided with one limiting protruding part protruding outwards.
Preferably, the adjacent ceramic splicing sheet end surfaces are respectively provided with a convex part and a concave part matched with the convex part along the radial direction; the protrusion may be embedded in the recess.
Preferably, the two end parts of the ceramic splicing sheet are composed of an end part inner layer and an end part outer layer; the convex part and the concave part are arranged on the end face of the inner layer of the end part; arc grooves and arc convex beams matched with the grooves are respectively arranged on the outer layer end surfaces of the end parts of the adjacent ceramic splicing pieces along the axial direction; the convex beam can be embedded into the groove.
The utility model has at least the following beneficial effects:
The ceramic splicing piece is internally provided with an electric heating wire placing hole, the outer walls of the end areas at the two ends of the ceramic splicing piece are respectively provided with a first electric heating wire outlet hole and a second electric heating wire outlet hole, the bottoms of the first electric heating wire outlet hole and the second electric heating wire outlet hole are communicated with the electric heating wire placing hole, and the orifices of the first electric heating wire outlet hole and the second electric heating wire outlet hole are located below a junction box of the rotary kiln. Like this, all there is the terminal box at every concatenation department, and first heating wire apopore and second heating wire apopore drill way all are located the terminal box below, make things convenient for the installation of electric heating element, maintenance, and can not take place the heating wire and place the phenomenon such as hole intussuseption filler and strain electric heating element.
Further, ceramic splicing piece both ends tip comprises tip inlayer and tip skin, and the tip inlayer terminal surface of adjacent ceramic splicing piece is equipped with bellying and depressed part along radial respectively, during the concatenation, in embedding bellying 10111 to the concatenation body axial displacement spacing, simultaneously, the tip skin terminal surface of adjacent ceramic splicing piece is equipped with recess and protruding roof beam along the axial respectively, during the concatenation, in embedding the recess with protruding roof beam, spacing to the concatenation body radial displacement, under double spacing, the concatenation body is more stable.
Therefore, the ceramic liner of the rotary kiln has the advantages that the ceramic liner is convenient for installing and maintaining the electric heating element, the phenomena of leakage of the filler in the electric heating wire placing hole, strain of the electric heating element and the like can not occur, and meanwhile, the spliced body is more stable.
Drawings
In order to more clearly illustrate the prior art and the present utility model, the drawings used in the description of the prior art and the embodiments of the present utility model will be briefly described. It will be apparent to those skilled in the art that the drawings in the following description are merely exemplary and that other drawings may be derived from the drawings provided without the inventive effort to those skilled in the art.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, for example, modifications, variations in proportions, or otherwise, used in the practice of the utility model, which are particularly adapted to specific environments without departing from the spirit and scope of the utility model.
FIG. 1 is an axial cross-sectional view of a rotary kiln cylinder of a ceramic liner of a rotary kiln in accordance with the present utility model;
FIG. 2 is a radial cross-sectional view of a rotary kiln cylinder of a ceramic liner of a rotary kiln according to the present utility model;
FIG. 3 is a schematic view of a ceramic liner ring of a ceramic liner of a rotary kiln according to the present utility model;
FIG. 4 is a right-hand schematic view of FIG. 3 of a ceramic liner of a rotary kiln according to the present utility model;
FIG. 5 is a radial cross-sectional view of a ceramic liner ring of a ceramic liner of a rotary kiln in accordance with the present utility model;
FIG. 6 is a schematic view showing a vertical arrangement state of ceramic splicing pieces of a ceramic liner of a rotary kiln according to the present utility model;
FIG. 7 is a schematic view showing a horizontal placement state of ceramic splicing pieces of a ceramic liner of a rotary kiln according to the present utility model;
Reference numerals illustrate:
1. A ceramic liner ring; 101. ceramic splicing pieces; 1011. an end inner layer; 10111. a recessed portion; 10112. a boss; 1012. an end outer layer; 10121. a groove; 10122. a convex beam; 1013. a heating wire placement hole; 1014. a first heating wire outlet hole; 1015. a second heating wire outlet hole; 1016. a limit protruding part; 2. and a junction box.
Detailed Description
The application will be further described in detail by means of specific embodiments with reference to the accompanying drawings.
In the description of the present application: unless otherwise indicated, the meaning of "a plurality" is two or more. The terms "first," "second," "third," and the like in this disclosure are intended to distinguish between the referenced objects without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on the degree of importance or order, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
The terms such as "upper", "lower", "left", "right", "middle", etc. are generally used herein for convenience of visual understanding with reference to the drawings and are not to be construed as absolute limitations on the positional relationship of the actual product. Such changes in the relative positional relationship without departing from the technical idea of the present application are also considered as the scope of the present application.
According to the ceramic liner of the rotary kiln, as shown in fig. 1 to 7, at least one ceramic liner ring 1 is arranged in the ceramic liner, a plurality of ceramic liner rings 1 are spliced together in sequence, the ceramic liner ring 1 is formed by splicing at least two ceramic splicing pieces 101, so that the size of the ceramic liner is greatly reduced, the firing difficulty is reduced, the firing yield is improved, a plurality of heating wire placing holes 1013 are uniformly distributed in the ceramic splicing pieces 101, an electric heating element is placed in the ceramic liner, the rotary kiln is heated, and a first heating wire outlet 1014 and a second heating wire outlet 1015 are respectively formed in the outer walls of end areas at two ends of the ceramic splicing pieces 101; the bottoms of the first heating wire outlet 1014 and the second heating wire outlet 1015 are communicated with the heating wire placing hole 1013, and the orifices of the first heating wire outlet 1014 and the second heating wire outlet 1015 are positioned below the junction box 2 of the rotary kiln, so that the electric heating element extends into the junction box 2 from the first heating wire outlet 1014 and the second heating wire outlet 1015, the installation and the maintenance are convenient, and the leakage of fillers in the heating wire placing hole and the strain of the electric heating element are avoided.
Preferably, a plurality of heating wire placing holes 1013 are uniformly distributed in the axial direction of the ceramic splicing piece 101 in order to uniformly heat the electric heating element.
Preferably, in order to limit the ceramic liner of the application, and simultaneously, the ceramic liner and the heat insulation layer do not slide when the rotary kiln rotates, a plurality of limit protruding parts 1016 are uniformly distributed on the outer wall of the ceramic splicing piece 101, and when the heat insulation layer is poured, the limit protruding parts 1016 are embedded in the heat insulation layer, so that the ceramic liner and the heat insulation layer are firmly fixed together
Preferably, in order to enhance the stability of the spliced body, the end faces of the adjacent ceramic splicing pieces 101 are respectively provided with a protruding portion 10112 and a recessed portion 10111 matched with the protruding portion 10112 along the radial direction, and when in splicing, the protruding portion 10112 is embedded into the recessed portion 10111, so that the axial movement of the spliced body is limited.
Meanwhile, in order to limit radial movement of the splicing body, stability of the splicing body is further enhanced, two end parts of the ceramic splicing sheet 101 are composed of an end part inner layer 1011 and an end part outer layer 1012, a protruding part 10112 and a recessed part 10111 are arranged on the end surface of the end part inner layer 1011, the end surfaces of the end parts outer layer 1012 of the adjacent ceramic splicing sheet 101 are respectively provided with an arc-shaped groove 10121 and an arc-shaped protruding beam 10122 matched with the groove 10121 along the axial direction, and when in splicing, the protruding beam 10122 is embedded into the groove 10121, so that radial movement of the splicing body is limited, and the splicing body is more stable under double limiting.
The application has been described above with particularity and detail in connection with general description and specific embodiments. It should be understood that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but these conventional modifications and further innovations may also fall within the scope of the claims of the present application as long as they do not depart from the technical spirit of the present application.
Claims (5)
1. A ceramic liner of a rotary kiln, comprising at least one ceramic liner ring (1); a plurality of ceramic liner rings (1) are spliced together in sequence; the ceramic liner ring (1) is formed by splicing at least two ceramic splicing pieces (101); a plurality of heating wire placing holes (1013) are uniformly distributed in the ceramic splicing sheet (101) and are used for placing an electric heating element, and the ceramic splicing sheet is characterized in that a first heating wire outlet hole (1014) and a second heating wire outlet hole (1015) are respectively formed in the outer walls of end part areas at two ends of the ceramic splicing sheet (101); the bottoms of the first heating wire outlet hole (1014) and the second heating wire outlet hole (1015) are communicated with the heating wire placing hole (1013); the orifices of the first heating wire outlet hole (1014) and the second heating wire outlet hole (1015) are both positioned below the junction box of the rotary kiln.
2. A ceramic inner container of a rotary kiln according to claim 1, characterized in that a plurality of the heating wire placing holes (1013) are distributed axially along the ceramic splicing piece (101).
3. A ceramic inner container of a rotary kiln according to claim 1, characterized in that the outer wall of the ceramic splicing piece (101) is provided with at least one outwardly protruding limit boss (1016).
4. A ceramic liner for a rotary kiln according to any one of claims 1 to 3, characterized in that the end faces of adjacent ceramic splicing pieces (101) are respectively provided with a convex part (10112) and a concave part (10111) matched with the convex part (10112) along the radial direction; the boss (10112) may be embedded within the recess (10111).
5. The ceramic liner of a rotary kiln according to claim 4, wherein the ceramic splicing pieces (101) are composed of an end inner layer (1011) and an end outer layer (1012) at both end portions; the convex part (10112) and the concave part (10111) are arranged on the end face of the end inner layer (1011); an arc-shaped groove (10121) and an arc-shaped convex beam (10122) matched with the groove (10121) are respectively arranged on the end face of the outer layer (1012) of the end part of the adjacent ceramic splicing sheet (101) along the axial direction; the protruding beam (10122) may be embedded in the recess (10121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322776675.2U CN221005897U (en) | 2023-10-17 | 2023-10-17 | Ceramic liner of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322776675.2U CN221005897U (en) | 2023-10-17 | 2023-10-17 | Ceramic liner of rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221005897U true CN221005897U (en) | 2024-05-24 |
Family
ID=91090959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322776675.2U Active CN221005897U (en) | 2023-10-17 | 2023-10-17 | Ceramic liner of rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221005897U (en) |
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2023
- 2023-10-17 CN CN202322776675.2U patent/CN221005897U/en active Active
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