Kiln head and kiln tail sealing structure of rotary kiln

Abstract

The utility model relates to a rotary kiln head and tail sealing structure, and relates to the technical field of rotary kilns, the rotary kiln head and tail sealing structure comprises a sealing fin group arranged between a kiln head and a cylinder body and a sealing fin group arranged between a kiln tail and the cylinder body, the sealing fin group comprises a plurality of sealing fins, the sealing piece is arranged around the joint between the kiln head and the barrel or around the joint between the kiln tail and the barrel, outer pipes are fixedly connected to the two ends of the barrel, the outer pipes and the outer pipes are coaxially arranged, the ends of the sealing piece abut against the arc-shaped outer walls of the outer pipes, and the ends of the sealing piece abut against the arc-shaped outer walls of the outer pipes. The sealing piece is provided with a fixing piece used for fixing the sealing piece to the kiln head or the kiln tail. The sealing piece has the effect of prolonging the service life of the sealing piece.

Description

Technical Field

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

[0002] As an important thermal equipment widely used in metallurgy, building materials, chemical industry and other industries, the sealing performance of rotary kiln is directly related to production efficiency and energy consumption level.

[0003] The kiln head and kiln tail sealing structures of rotary kilns on the current market mostly adopt the traditional scale seal design. Since there is a certain difference in diameter between the kiln head and the cylinder and between the kiln tail and the cylinder, the sealing sheet usually needs to be placed at an angle, so that the inclination angle of the sealing sheet is relatively large. Therefore, under long-term high temperature and heavy load working environment, the sealing sheet is prone to warping and wear, resulting in reduced air tightness, affecting the stable operation of the rotary kiln. In related technologies, in order to improve the sealing performance, the method of increasing the thickness of the sealing sheet or improving the wear resistance of the material is usually adopted, but these measures are often costly and have limited effects. Utility Model Content

[0004] In order to increase the service life of the sealing sheet, the present application provides a rotary kiln head and kiln tail sealing structure.

[0005] The present application provides a rotary kiln head and kiln tail sealing structure adopts the following technical solution:

[0006] A rotary kiln head and kiln tail sealing structure comprises a sealing sheet group arranged between the kiln head and the cylinder body and a sealing sheet group arranged between the kiln tail and the cylinder body, wherein the sealing sheet group comprises a plurality of sealing sheets, and the sealing sheets are arranged around the connection between the kiln head and the cylinder body, or around the connection between the kiln tail and the cylinder body, both ends of the cylinder body are fixedly connected with an outer tube, and the outer tube is arranged coaxially with the outer tube, and the end of the sealing sheet abuts against the arc-shaped outer wall of the outer tube, and the sealing sheet is provided with a fixing piece for fixing the sealing sheet to the kiln head or the kiln tail.

[0007] By adopting the above technical solution, an outer tube is arranged on the cylinder of the rotary kiln, the diameter of the cylinder is increased, and the angle of the sealing piece at the connection between the kiln head and the kiln tail is reduced, so that the sealing piece fits the surface of the rotary kiln better during operation, reducing the possibility of warping and wear. At the same time, it also helps to enhance the airtightness of the rotary kiln, so that the swing amplitude of the rotary kiln during operation is reduced.

[0008] Optionally, the sealing sheet set further includes a fastening ring, which is arranged around the cylinder and the inner arc surface of the fastening ring abuts against the plurality of sealing sheets.

[0009] By adopting the above technical solution, the positions of multiple sealing sheets can be restricted by the fastening ring, so that the end of the sealing sheet away from the fixing member is close to the outer tube, thereby improving the airtightness of the sealing sheet.

[0010] Optionally, the fixing member is configured as a fixing bolt, and the fixing bolt passes through the sealing sheet and is threadedly connected to the kiln head or the kiln tail.

[0011] By adopting the above technical solution, the rod of the fixing bolt can be separated from the kiln head or the kiln tail by rotating the fixing bolt, so that the sealing sheet can be replaced regularly.

[0012] Optionally, the sealing sheet group further includes a plurality of reinforcing sheets, and the plurality of reinforcing sheets are arranged around the axis of the cylinder, and the fixing bolts pass through the reinforcing sheets and press the reinforcing sheets against the sealing sheets.

[0013] By adopting the above technical solution, the sealing sheet can be reinforced by the reinforcing sheet to improve the stability of the sealing sheet.

[0014] Optionally, one end of the reinforcement sheet away from the fixing bolt is bent toward one side of the fixing bolt and is arranged in a ring shape, and the fastening ring passes through the ring portion of the reinforcement sheet.

[0015] By adopting the above technical solution, the position of the fastening ring on the sealing sheet can be restricted by the reinforcing sheet, thereby improving the stability of the fastening ring on the sealing sheet.

[0016] Optionally, the fastening ring is made of rubber material.

[0017] By adopting the above technical solution, the fastening ring made of rubber material can be better with due to its certain elasticity.

[0018] Optionally, the sealing sheet includes a sealing sheet body and a wear-resistant sleeve inserted into one end of the sealing sheet body away from the fixing member, and a locking member for fixing the wear-resistant sleeve and the sealing sheet body is provided between the wear-resistant sleeve and the sealing sheet body.

[0019] By adopting the above technical solution, the wear-resistant sleeve with severe wear can be replaced by adjusting the fixing member.

[0020] Optionally, the locking member is configured as a locking bolt, and a rod portion of the locking bolt passes through the wear-resistant sleeve and is threadedly connected to the sealing plate body.

[0021] By adopting the above technical solution, the locking bolt can be rotated to separate the rod of the locking bolt from the sealing plate body, and then the rod of the fixing bolt can be separated from the sealing plate body, thereby realizing the disassembly of the wear-resistant sleeve sealing plate.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. It can reduce the angle of the sealing piece at the connection between the kiln head and the kiln tail, so that the sealing piece fits the surface of the rotary kiln better during operation, reducing the possibility of edge warping and wear. It also helps to enhance the air tightness of the rotary kiln, so that the swing amplitude of the rotary kiln during operation is reduced;

[0024] 2. The positions of multiple sealing sheets can be restricted by the fastening ring so that the end of the sealing sheet away from the fixing member is close to the outer tube;

[0025] 3. The position of the fastening ring on the sealing sheet can be limited by the reinforcing sheet to improve the stability of the fastening ring on the sealing sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0027] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0028] Figure 3 is a schematic structural diagram of a fixing member of Example 1 of the present application;

[0029] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application;

[0030] Figure 5 It is a schematic diagram of the structure of the locking member of Example 2 of the present application.

[0031] In the figure, 1, sealing plate group; 11, sealing plate; 111, sealing plate body; 112, wear-resistant sleeve; 113, locking piece; 12, fixing piece; 13, fastening ring; 14, reinforcing plate; 2, outer tube; 3, kiln tail; 4, kiln head; 5, cylinder body. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 5 , further details of this application are given.

[0033] Example 1: A rotary kiln head and kiln tail sealing structure, referring to Figure 1 , including a sealing sheet group 1 arranged between the kiln head 4 and the cylinder 5 and a sealing sheet group 1 arranged between the kiln tail 3 and the cylinder 5.

[0034] Reference Figure 1 and Figure 2The sealing sheet group 1 includes a plurality of sealing sheets 11, which are located at the connection between the kiln head 4 and the cylinder 5, and the plurality of sealing sheets 11 abut against each other and are arranged equidistantly around the axis of the cylinder 5. The sealing sheets 11 located at the kiln tail 3 are located at the connection between the kiln tail 3 and the cylinder 5, and the plurality of sealing sheets 11 abut against each other and are arranged equidistantly around the axis of the cylinder 5.

[0035] Reference Figure 1 , Figure 2 and Figure 3 The two ends of the cylinder 5 are fixedly connected with the outer tube 2, the outer tube 2 is coaxially arranged with the cylinder 5 and the outer tube 2 is sleeved on the cylinder 5. The end of the sealing sheet 11 abuts against the arc-shaped outer wall of the outer tube 2, and the sealing sheet 11 is provided with a fixing part 12 for fixing the sealing sheet 11 on the kiln head 4 or the kiln tail 3.

[0036] The fixing member 12 in this embodiment is configured as a fixing bolt, which is located at a side of the sealing sheet 11 away from the cylinder 5 , and passes through the sealing sheet 11 and is threadedly connected to the kiln head 4 or the kiln tail 3 .

[0037] Then, the fixing bolts are rotated to separate the rods of the fixing bolts from the kiln head 4 or the kiln tail 3 , thereby realizing the removal of the sealing sheet 11 from the kiln head 4 or the kiln tail 3 .

[0038] The sealing sheet set 1 also includes a fastening ring 13 and a plurality of reinforcing sheets 14. The plurality of reinforcing sheets 14 are arranged around the axis of the cylinder 5, and there is a certain distance between two adjacent reinforcing sheets 14. The fixing bolt passes through the reinforcing sheets 14 and presses the reinforcing sheets 14 against the sealing sheet 11. The end of the reinforcing sheet 14 away from the fixing bolt is bent toward the side of the fixing bolt and is arranged in an annular shape. The fastening ring 13 passes through the annular part of the plurality of reinforcing sheets 14. The fastening ring 13 is made of rubber and presses the reinforcing sheets 14 and the sealing sheet 11 against the arc-shaped outer wall of the outer tube 2.

[0039] The implementation principle of Example 1 is: when the sealing sheet 11 is maintained, the reinforcing sheet 14 can be separated from the sealing sheet 11 by rotating the fixing bolts, and the fastening ring 13 can be separated from the sealing sheet 11 at the same time, and then the sealing sheet 11 can be removed from the kiln head 4 or the kiln tail 3 in turn.

[0040] Example 2

[0041] The difference from Example 1 is that: Figure 4 and Figure 5 The sealing piece 11 includes a sealing piece body 111 and a wear-resistant sleeve 112. The wear-resistant sleeve 112 is sleeved and inserted at the end of the sealing piece body 111 away from the fixing member 12. A locking member 113 is provided between the wear-resistant sleeve 112 and the sealing piece body 111 for fixing the two.

[0042] The locking member 113 in this embodiment is configured as a locking bolt, the rod of which passes through the side wall of the wear-resistant sleeve 112 and is threadedly connected to the sealing sheet body 111 .

[0043] The implementation principle of Example 2 is: by rotating the locking bolt, the rod of the locking bolt can be separated from the sealing plate body 111, thereby canceling the fixation of the wear-resistant sleeve 112 on the sealing plate 11, thereby maintaining and replacing the wear-resistant sleeve 112.

[0044] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rotary kiln head and kiln tail sealing structure, comprising a sealing sheet group (1) arranged between a kiln head (4) and a cylinder (5) and a sealing sheet group (1) arranged between a kiln tail (3) and the cylinder (5), characterized in that: The sealing sheet group (1) comprises a plurality of sealing sheets (11), the sealing sheets (11) being arranged around the connection between the kiln head (4) and the cylinder (5), or around the connection between the kiln tail (3) and the cylinder (5), both ends of the cylinder (5) being fixedly connected to an outer tube (2), the outer tube (2) being coaxially arranged with the cylinder (5), the end of the sealing sheet (11) being in contact with the arc-shaped outer wall of the outer tube (2), and the sealing sheet (11) being provided with a fixing part (12) for fixing the sealing sheet (11) to the kiln head (4) or the kiln tail (3).

2. A rotary kiln head and tail sealing structure according to claim 1, characterized in that: The fixing member (12) is configured as a fixing bolt, and the fixing bolt passes through the sealing sheet (11) and is threadedly connected to the kiln head (4) or the kiln tail (3).

3. A rotary kiln head and tail sealing structure according to claim 2, characterized in that: The sealing sheet set (1) further comprises a fastening ring (13), the fastening ring (13) being arranged around the cylinder (5) and the inner arc surface of the fastening ring (13) being in contact with the plurality of sealing sheets (11).

4. A rotary kiln head and tail sealing structure according to claim 3, characterized in that: The sealing sheet set (1) further comprises a plurality of reinforcing sheets (14), wherein the plurality of reinforcing sheets (14) are arranged around the axis of the cylinder (5), and the fixing bolts pass through the reinforcing sheets (14) and press the reinforcing sheets (14) against the sealing sheet (11).

5. A rotary kiln head and tail sealing structure according to claim 4, characterized in that: One end of the reinforcing sheet (14) away from the fixing bolt is bent toward one side of the fixing bolt and is arranged in a ring shape, and the fastening ring (13) passes through the ring portion of the reinforcing sheet (14).

6. A rotary kiln head and tail sealing structure according to claim 3, characterized in that: The fastening ring (13) is made of rubber material.

7. The rotary kiln head and tail sealing structure according to claim 1, characterized in that: The sealing sheet (11) comprises a sealing sheet body (111) and a wear-resistant sleeve (112) inserted into an end of the sealing sheet body (111) away from the fixing member (12), and a locking member (113) is provided between the wear-resistant sleeve (112) and the sealing sheet body (111) for fixing the two.

8. A rotary kiln head and tail sealing structure according to claim 7, characterized in that: The locking member (113) is configured as a locking bolt, the rod portion of the locking bolt passing through the wear-resistant sleeve (112) and being threadedly connected to the sealing sheet body (111).

Images