Silicon carbide ceramic inner cylinder hanging strip seat for cement kiln

Abstract

The utility model belongs to the technical field of structural improvement of preheater ceramic inner cylinder hanging strip seats, and particularly relates to a silicon carbide ceramic inner cylinder hanging strip seat for a cement kiln, which comprises a connecting flange, a mounting sleeve is welded at the bottom of the connecting flange, and a plurality of groups of positioning pins are distributed on the inner side wall of the mounting sleeve along the circumference. An annular cover plate is arranged at the top of the connecting flange, a limiting sleeve is welded to the bottom of the annular cover plate, and the outer side wall of the limiting sleeve is sleeved with a flexible sleeve. When the ceramic hanging strip mounting device is applied, the ceramic hanging strips are mounted on the positioning pins in the mounting sleeve, and then the limiting sleeve is inserted into the space defined by the ceramic hanging strips, so that the upper ends of all the ceramic hanging strips can be mounted, a large amount of bolt screwing operation is not needed, and the mounting construction efficiency of the ceramic inner barrel is effectively improved; moreover, during application, the flexible sleeve can effectively buffer the radial displacement of the upper end of the ceramic hanging strip, so that the upper end of the ceramic hanging strip is effectively prevented from being broken, and the service life of the ceramic hanging strip is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to a silicon carbide ceramic inner cylinder hanging strip seat for a cement kiln, belonging to the technical field of structural improvement of the ceramic inner cylinder hanging strip seat of a preheater. Background Art

[0002] my country is a major cement producer, and its annual cement production ranks among the top in the world. In the production of new dry-process cement, the preheater is a key device in the production process. For a long time, both at home and abroad, the inner cylinder of the preheater is mostly made of nickel-chromium alloy heat-resistant steel. However, due to the short life of heat-resistant steel, its use limitations are becoming more and more serious, which seriously restricts production efficiency and directly or indirectly increases production costs. The emergence of ceramic inner cylinders, due to their high strength, high temperature resistance, high hardness, corrosion resistance, oxidation resistance, resistance to rapid heating and cooling, good thermal shock resistance, good thermal conductivity and high thermal efficiency, effectively solves the problem of insufficient life of heat-resistant steel inner cylinders. At present, many cement manufacturers have gradually replaced heat-resistant steel inner cylinders with ceramic inner cylinders, which has become a major revolution in cement production equipment.

[0003] The ceramic inner cylinder of the preheater is formed by fixing a number of ceramic hanging bars of the same structure side by side on the inner wall of the preheater, and the upper end of the hanging bar is fixedly connected to the hanging bar seat. In the prior art, the ceramic hanging bar and the hanging bar seat of the preheater are usually fixedly connected by two bolts. For example, the Chinese utility model patent with the authorization announcement number CN215176986U discloses a new type of nano-ceramic preheater inner cylinder, in which the metal ceramic hanging plate and the heat-resistant fixing seat are fixedly connected by bolts. On the one hand, due to the large number of ceramic hanging bars in the ceramic preheater inner cylinder, a large number of bolt tightening operations are involved during installation and construction, and the construction efficiency is low; on the other hand, since the ceramic hanging bar and the hanging bar seat are rigidly connected by bolts, in actual use, the part where the ceramic hanging bar is connected to the hanging bar seat is easy to break, resulting in a short service life of the ceramic hanging bar. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a silicon carbide ceramic inner cylinder hanging bar seat for cement kiln furnace which can improve the installation construction efficiency of the ceramic inner cylinder and effectively increase the service life of the ceramic hanging bar.

[0005] The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln described in the utility model comprises a connecting flange, a mounting sleeve is welded at the bottom of the connecting flange, a plurality of groups of positioning pins are distributed along the circumference on the inner side wall of the mounting sleeve, an annular cover plate is arranged on the top of the connecting flange, a limiting sleeve is welded at the bottom of the annular cover plate, and a flexible sleeve is sleeved on the outer side wall of the limiting sleeve.

[0006] Furthermore, a plurality of first ribs are welded between the bottom of the connecting flange and the outer side wall of the mounting sleeve, and the first ribs are evenly distributed on the outer circumference of the mounting sleeve. The first ribs can not only increase the structural strength of the mounting sleeve, but also increase the stability of the connection between the connecting flange and the mounting sleeve.

[0007] Furthermore, a first chamfer is provided at the end of the positioning pin, and the setting of the first chamfer can facilitate the installation of the ceramic hanging strip on the positioning pin.

[0008] Furthermore, a second chamfer is provided on the outer edge of the lower end of the flexible sleeve, and the provision of the second chamfer can facilitate the installation of the limiting sleeve.

[0009] Furthermore, the inner diameter of the limiting sleeve is larger than the inner diameter of the annular cover plate, so that the cross-section of the limiting sleeve and the annular cover plate forms a T-shaped structure, so that the inside and outside of the limiting sleeve and the annular cover plate can be welded, which is beneficial to improving the structural stability of the limiting sleeve.

[0010] Furthermore, a plurality of second ribs are welded between the bottom of the annular cover plate and the inner wall of the limiting sleeve, and the second ribs are evenly distributed on the inner circumference of the limiting sleeve. The second ribs can not only increase the structural strength of the limiting sleeve, but also increase the stability of the connection between the limiting sleeve and the annular cover plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The silicon carbide ceramic inner tube hanging bar seat for cement kiln described in the utility model can complete the installation of the upper ends of all ceramic hanging bars by installing the ceramic hanging bars on the positioning pins in the installation sleeve and then inserting the limit sleeve into the space surrounded by each ceramic hanging bar, without the need for a large number of bolt tightening operations, thereby effectively improving the installation and construction efficiency of the ceramic inner tube; and, when used, the flexible sleeve can effectively buffer the radial displacement of the upper end of the ceramic hanging bar, thereby effectively preventing the upper end of the ceramic hanging bar from breaking and effectively increasing the service life of the ceramic hanging bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0016] Figure 4 It is a cross-sectional view of the utility model when applied.

[0017] In the figure: 1. connecting flange; 2. first rib plate; 3. mounting sleeve; 4. annular cover plate; 5. positioning pin; 6. flexible sleeve; 7. limiting sleeve; 8. second rib plate; 9. ceramic hanging strip; 10. first chamfer; 11. second chamfer. DETAILED DESCRIPTION

[0018] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0019] Embodiment 1:

[0020] like Figures 1 to 3 As shown, the silicon carbide ceramic inner cylinder hanging bar seat for cement kiln described in the utility model includes a connecting flange 1, a mounting sleeve 3 is welded to the bottom of the connecting flange 1, a plurality of groups of positioning pins 5 are distributed along the circumference on the inner wall of the mounting sleeve 3, an annular cover plate 4 is arranged on the top of the connecting flange 1, a limiting sleeve 7 is welded to the bottom of the annular cover plate 4, and a flexible sleeve 6 is sleeved on the outer wall of the limiting sleeve 7.

[0021] During construction application, Figure 4 As shown, the connecting flange 1 is used to be installed on the inner wall of the cement kiln preheater. Since the ceramic hanging bar 9 is provided with a connecting hole, each ceramic hanging bar 9 is installed one by one on the inner wall of the mounting sleeve 3 through the cooperation of the connecting hole and the positioning pin 5, and then the annular cover plate 4 is covered on the connecting flange 1, and the limiting sleeve 7 is inserted into the space surrounded by each ceramic hanging bar 9. At this time, the ceramic hanging bar 9 is firmly squeezed on the inner wall of the mounting sleeve 3 by the flexible sleeve 6, the positioning pin 5 can limit the axial displacement of the ceramic hanging bar 9, and the flexible sleeve 6 can limit the radial displacement of the ceramic hanging bar 9, thereby completing the upper end installation of the ceramic hanging bar 9.

[0022] The silicon carbide ceramic inner tube hanging bar seat for cement kiln described in the utility model can complete the installation of the upper ends of all ceramic hanging bars 9 by installing the ceramic hanging bars 9 on the positioning pins 5 in the installation sleeve 3, and then inserting the limiting sleeve 7 into the space surrounded by each ceramic hanging bar 9, without the need for a large number of bolt tightening operations, thereby effectively improving the installation and construction efficiency of the ceramic inner tube; and, when used, the flexible sleeve 6 can effectively buffer the radial displacement of the upper end of the ceramic hanging bar 9, thereby effectively preventing the upper end of the ceramic hanging bar 9 from breaking, and effectively increasing the service life of the ceramic hanging bar 9.

[0023] Embodiment 2:

[0024] like Figures 1 to 4 As shown, based on Example 1,

[0025] Furthermore, a plurality of first ribs 2 are welded between the bottom of the connecting flange 1 and the outer wall of the mounting sleeve 3, and the first ribs 2 are evenly distributed on the outer circumference of the mounting sleeve 3. The first ribs 2 can not only increase the structural strength of the mounting sleeve 3, but also increase the stability of the connection between the connecting flange 1 and the mounting sleeve 3.

[0026] Furthermore, a first chamfer 10 is provided at the end of the positioning pin 5 . The provision of the first chamfer 10 can facilitate the installation of the ceramic hanging strip 9 on the positioning pin 5 .

[0027] Furthermore, a second chamfer 11 is provided at the outer edge of the lower end of the flexible sleeve 6 . The provision of the second chamfer 11 can facilitate the installation of the limiting sleeve 7 .

[0028] Furthermore, the inner diameter of the limiting sleeve 7 is larger than the inner diameter of the annular cover plate 4, so that the cross-section of the limiting sleeve 7 and the annular cover plate 4 can form a T-shaped structure, so that the inside and outside of the limiting sleeve 7 and the annular cover plate 4 can be welded, which is beneficial to improving the structural stability of the limiting sleeve 7.

[0029] Furthermore, a plurality of second ribs 8 are welded between the bottom of the annular cover plate 4 and the inner wall of the limiting sleeve 7, and the second ribs 8 are evenly distributed on the inner circumference of the limiting sleeve 7. The second ribs 8 can not only increase the structural strength of the limiting sleeve 7, but also increase the stability of the connection between the limiting sleeve 7 and the annular cover plate 4.

[0030] It is particularly noted that in the description of the present invention, the terms "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention rather than requiring that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A silicon carbide ceramic inner cylinder hanging bar seat for a cement kiln, comprising a connecting flange (1), characterized in that: A mounting sleeve (3) is welded to the bottom of the connecting flange (1), a plurality of groups of positioning pins (5) are distributed along the circumference on the inner side wall of the mounting sleeve (3), an annular cover plate (4) is arranged on the top of the connecting flange (1), a limiting sleeve (7) is welded to the bottom of the annular cover plate (4), and a flexible sleeve (6) is sleeved on the outer side wall of the limiting sleeve (7).

2. The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln according to claim 1 is characterized in that: A plurality of first ribs (2) are welded between the bottom of the connecting flange (1) and the outer side wall of the mounting sleeve (3), and the first ribs (2) are evenly distributed on the outer circumference of the mounting sleeve (3).

3. The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln according to claim 1 is characterized in that: The end of the positioning pin (5) is provided with a first chamfer (10).

4. The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln according to claim 1, characterized in that: The outer edge of the lower end of the flexible sleeve (6) is provided with a second chamfer (11).

5. The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln according to any one of claims 1 to 4, characterized in that: The inner diameter of the limiting sleeve (7) is greater than the inner diameter of the annular cover plate (4).

6. The silicon carbide ceramic inner cylinder hanging bar seat for cement kiln according to claim 5, characterized in that: A plurality of second ribs (8) are welded between the bottom of the annular cover plate (4) and the inner side wall of the limiting sleeve (7), and the second ribs (8) are evenly distributed on the inner circumference of the limiting sleeve (7).

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