Kiln head sealing device of rotary kiln

Abstract

The utility model discloses a kiln head sealing device of a rotary kiln, which relates to the technical field of rotary kilns, and comprises a rotary kiln cylinder and a kiln head cover, one end of the rotary kiln cylinder is movably inserted and connected with a pipe body, the pipe body is fixedly sleeved with a protective pipe, and a sealing assembly is connected between the protective pipe and the end part of the rotary kiln cylinder. One end of the pipe body is connected to one side of the kiln head cover, a cooling assembly is installed at the end, close to the kiln head cover, of the protective pipe, the pipe body is arranged to be in a conical barrel shape, and the diameter of the end, close to the rotary kiln cylinder, of the pipe body is larger than that of the other end of the pipe body. And a heat dissipation cavity is formed between the other end of the protection pipe and the other end of the pipe body. According to the utility model, the cooling assembly is arranged to cool the pipe body and the protective pipe, so that the protective pipe and the pipe body are prevented from deforming due to the influence of high temperature for a long time, the sealing effect of the sealing assembly is ensured, and the influence on material production is avoided to a greater extent.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a kiln head sealing device of a rotary kiln. Background Art

[0002] The tail of the rotary kiln not only has a high temperature, high dust, and negative pressure process environment, but also has complex movements such as rotation, swinging, and axial movement at the tail end of the kiln. The cylinder has deformations such as elliptical and curved, and there are constantly changing radial, axial, and circumferential three-dimensional gaps between the rotating parts and the fixed parts.

[0003] However, the existing rotary kiln is subjected to high temperature for a long time during operation, which may cause the sealing part to deform and cause the sealing effect to deteriorate, and the structural strength to decrease, which seriously affects the production of materials. Therefore, a rotary kiln head sealing device is provided. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a kiln head sealing device for a rotary kiln. A cooling component is provided to cool the tube body and the protective tube, thereby preventing the protective tube and the tube body from being deformed due to long-term exposure to high temperature, ensuring the sealing effect of the sealing component, and avoiding the impact on material production to a large extent, thus overcoming the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kiln head sealing device for a rotary kiln comprises a rotary kiln cylinder and a kiln head cover, wherein a tube body is movably inserted at one end of the rotary kiln cylinder, a protective tube is fixedly sleeved on the tube body, a sealing component is connected between the protective tube and the end of the rotary kiln cylinder, one end of the tube body is connected to one side of the kiln head cover, and a cooling component is installed at one end of the protective tube close to the kiln head cover;

[0007] The tube body is configured in a conical barrel shape, and the diameter of one end of the tube body close to the rotary kiln cylinder is larger than the diameter of the other end.

[0008] Through the above scheme, the cooling component can be used to cool the pipe body and the protective pipe, thereby preventing the protective pipe and the pipe body from being deformed due to long-term high temperature, ensuring the sealing effect of the sealing component, and avoiding the impact on material production to a large extent.

[0009] Preferably, one end of the protection tube is fixedly sleeved on one end of the tube body close to the rotary kiln cylinder, and a heat dissipation cavity is provided between the other end of the protection tube and the other end of the tube body.

[0010] Preferably, the sealing assembly includes a first connecting ring fixedly welded to the outer wall of the end of the rotary kiln cylinder, a second connecting ring is welded to one end of the outer wall of the tube body, a sealing sleeve is slidably sleeved on the outside of the first connecting ring, and the cross-section of the sealing sleeve is L-shaped, and fish scales are connected to one end of the sealing sleeve and the end of the second connecting ring at an equal distance.

[0011] Preferably, the cooling component comprises a ventilation pipe fixed to the end of the protective pipe, the bottom end of the ventilation pipe extends into the heat dissipation cavity and is equipped with a solenoid valve, and a fan is installed at the top end of the inner wall of the ventilation pipe.

[0012] Preferably, one end of the tube body away from the rotary kiln cylinder is connected with a flange, and the flange is connected to the kiln head cover.

[0013] Preferably, a reinforcement ring is welded to one end of the protection tube close to the kiln head cover, and support rods are welded at equal distances between the inner wall of the protection tube and the outer wall of the tube body.

[0014] Preferably, a gap is reserved between the reinforcement ring and the kiln head cover, and a gap is reserved between the inner side of the reinforcement ring and the tube body.

[0015] The beneficial effects of the utility model are:

[0016] The cooling component can be used to cool the pipe body and the protective pipe, thus preventing the protective pipe and the pipe body from being deformed due to long-term high temperature, ensuring the sealing effect of the sealing component and avoiding the impact on material production to a large extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a kiln head sealing device of a rotary kiln proposed by the utility model from a first perspective.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure from a second viewing angle of a kiln head sealing device of a rotary kiln proposed by the utility model.

[0019] Figure 3 The utility model is a partial cross-sectional three-dimensional structural schematic diagram of a kiln head sealing device of a rotary kiln.

[0020] Figure 4 The utility model provides a rotary kiln head sealing device Figure 3 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. rotary kiln cylinder; 2. sealing sleeve; 3. fish scale; 4. fan; 5. ventilation pipe; 6. kiln head cover; 7. reinforcement ring; 8. protection pipe; 9. first connecting ring; 10. tube body; 11. support rod; 12. flange; 13. heat dissipation chamber; 14. second connecting ring; 15. solenoid valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Example 1, reference Figure 1-4 A kiln head sealing device for a rotary kiln comprises a rotary kiln cylinder 1 and a kiln head cover 6, wherein a tube body 10 is movably inserted at one end of the rotary kiln cylinder 1, a protective tube 8 is fixedly sleeved on the tube body 10, the tube body 10 is arranged in a cone barrel shape, and the diameter of the tube body 10 at one end close to the rotary kiln cylinder 1 is larger than the diameter of the other end;

[0024] A sealing component is connected between the protective tube 8 and the end of the rotary kiln cylinder 1, one end of the tube body 10 is connected to one side of the kiln head cover 6, and a cooling component is installed at one end of the protective tube 8 close to the kiln head cover 6;

[0025] One end of the protection tube 8 is fixedly sleeved on one end of the tube body 10 close to the rotary kiln cylinder 1, and a heat dissipation cavity 13 is provided between the other end of the protection tube 8 and the other end of the tube body 10;

[0026] The sealing assembly includes a first connecting ring 9 fixedly welded to the outer wall of the end of the rotary kiln cylinder 1, a second connecting ring 14 is welded to one end of the outer wall of the tube body 10, a sealing sleeve 2 is slidably sleeved on the outside of the first connecting ring 9, and the cross section of the sealing sleeve 2 is L-shaped, and a fish scale 3 is connected between one end of the sealing sleeve 2 and the end of the second connecting ring 14 at an equal distance;

[0027] The cooling component includes a ventilation pipe 5 fixed to the end of the protection pipe 8, the bottom end of the ventilation pipe 5 extends into the heat dissipation cavity 13 and is installed with a solenoid valve 15, and a fan 4 is installed at the top of the inner wall of the ventilation pipe 5;

[0028] One end of the tube body 10 away from the rotary kiln cylinder 1 is connected with a flange 12, and the flange 12 is connected to the kiln head cover 6;

[0029] A reinforcing ring 7 is welded to one end of the protection tube 8 close to the kiln head cover 6, and support rods 11 are welded at equal distances between the inner wall of the protection tube 8 and the outer wall of the tube body 10 to improve the connection strength between the protection tube 8 and the tube body 10 and reduce the possibility of deformation.

[0030] A gap is reserved between the reinforcing ring 7 and the kiln head cover 6 , and a gap is reserved between the inner side of the reinforcing ring 7 and the tube body 10 .

[0031] Working principle: The rotary kiln cylinder 1 drives the first connecting ring 9 and the sealing sleeve 2 to rotate relative to each other when rotating, so as to form a rotary seal. By opening the fan 4 and the solenoid valve 15, the external cold air enters the heat dissipation cavity 13 from the ventilation pipe 5, so that the heat is discharged from the gap between the reinforcing ring 7 and the kiln head cover 6, so as to cool the protective tube 8 and the tube body 10, avoid deformation of the protective tube 8 and the tube body 10 due to long-term high temperature, ensure the sealing effect, and avoid the influence on material production to a large extent.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A kiln head sealing device for a rotary kiln, comprising a rotary kiln cylinder (1) and a kiln head cover (6), characterized in that: A tube body (10) is movably inserted at one end of the rotary kiln cylinder (1), a protective tube (8) is fixedly sleeved on the tube body (10), a sealing component is connected between the protective tube (8) and the end of the rotary kiln cylinder (1), one end of the tube body (10) is connected to one side of the kiln head cover (6), and a cooling component is installed at one end of the protective tube (8) close to the kiln head cover (6); The tube body (10) is configured to be in a conical barrel shape, and the diameter of one end of the tube body (10) close to the rotary kiln cylinder (1) is larger than the diameter of the other end.

2. The kiln head sealing device of a rotary kiln according to claim 1, characterized in that: One end of the protection tube (8) is fixedly sleeved on one end of the tube body (10) close to the rotary kiln cylinder (1), and a heat dissipation cavity (13) is provided between the other end of the protection tube (8) and the other end of the tube body (10).

3. The kiln head sealing device of a rotary kiln according to claim 1, characterized in that: The sealing assembly comprises a first connecting ring (9) fixedly welded to the outer wall of the end of the rotary kiln cylinder (1); a second connecting ring (14) is welded to one end of the outer wall of the tube body (10); a sealing sleeve (2) is slidably sleeved on the outside of the first connecting ring (9); the cross section of the sealing sleeve (2) is L-shaped; and a fish scale (3) is equidistantly connected between one end of the sealing sleeve (2) and the end of the second connecting ring (14).

4. The kiln head sealing device of a rotary kiln according to claim 1, characterized in that: The cooling component comprises a ventilation pipe (5) fixed to the end of the protective pipe (8), the bottom end of the ventilation pipe (5) extends into the heat dissipation cavity (13) and is equipped with a solenoid valve (15), and the top end of the inner wall of the ventilation pipe (5) is equipped with a fan (4).

5. The kiln head sealing device of a rotary kiln according to claim 2, characterized in that: One end of the tube body (10) away from the rotary kiln cylinder (1) is connected to a flange (12), and the flange (12) is connected to the kiln head cover (6).

6. The kiln head sealing device of a rotary kiln according to claim 2, characterized in that: A reinforcing ring (7) is welded to one end of the protection tube (8) close to the kiln head cover (6), and support rods (11) are welded at equal distances between the inner wall of the protection tube (8) and the outer wall of the tube body (10).

7. The kiln head sealing device of a rotary kiln according to claim 6, characterized in that: A gap is reserved between the reinforcement ring (7) and the kiln head cover (6), and a gap is reserved between the inner side of the reinforcement ring (7) and the tube body (10).

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