Sealing structure of long-period operation kiln

Abstract

The utility model relates to the technical field of kiln sealing structures, and discloses a long-period operation kiln sealing structure which comprises a kiln tail smoke chamber, a sealing gasket, a fastening ring and two groups of compressing mechanisms, a kiln furnace tube is mounted on the kiln tail smoke chamber, and the sealing gasket is arranged at the joint of the kiln tail smoke chamber and the kiln furnace tube, so that the kiln tail smoke chamber and the kiln furnace tube are sealed through the fastening ring. The pressing mechanism is arranged on the fastening ring, so that when the sealing surface at the joint of the sealing ring and the furnace tube of the kiln is not tightly sealed due to abrasion, the sealing gasket can be attached and pressed on the surface of the furnace tube of the kiln through the pressing assembly of the pressing mechanism, manual operation of workers is not needed, and the sealing efficiency is improved. And the arc-shaped pressing ring can be used for pressing the sealing ring on the furnace tube of the cylindrical kiln.

Description

Technical Field

[0001] This utility model relates to the field of kiln sealing structure technology, specifically a sealing structure for a long-cycle kiln. Background Technology

[0002] A rotary kiln mainly consists of kiln tubes, a drive mechanism that rotates the kiln tubes, a kiln head hood installed at the head end of the kiln tubes, and a kiln tail smoke chamber installed at the tail end of the kiln tubes. During high-temperature pyrolysis, a large amount of harmful gases are generated. These harmful gases enter the kiln tail smoke chamber from the tail end of the kiln tubes and are then discharged into the tail gas treatment system for treatment. Therefore, the sealing requirements between the kiln tubes and the kiln tail smoke chamber are very strict, and the sealing structure is crucial for the long-term stable operation of the kiln.

[0003] Currently, some kiln sealing structures on the market include, for example, a utility model patent with authorization announcement number CN221744670U, which discloses a rotary kiln sealing structure. This structure uses bolts and pressure blocks to press the sealing ring from the outside. During operation, if the sealing surface at the junction of the sealing ring and the kiln tube becomes worn and leaks, the bolts are tightened to press the sealing ring against the kiln tube, thus ensuring a tight seal between the rotary kiln and the kiln tail flue and preventing exhaust gas leakage. However, this sealing structure requires manual tightening of the bolts to press the sealing ring against the kiln tube, preventing timely confirmation of leaks and sealing. Furthermore, the pressure block in this structure is a strip-shaped block arranged along the axial direction of the sealing ring. This means that when dealing with cylindrical kiln tubes, the strip-shaped pressure block can only press the sealing ring in partial locations, which needs improvement.

[0004] Therefore, we propose a long-cycle kiln sealing structure to address the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to solve the problems of some current kiln sealing structures, which require manual tightening of bolts by operators to press the sealing ring against the kiln tube during use. This prevents timely confirmation of leaks and sealing. Furthermore, the pressure block in the sealing structure is a strip-shaped block arranged along the axial direction of the sealing ring. In other words, when dealing with cylindrical kiln tubes, the strip-shaped pressure block can only press the sealing ring in partial positions, which is a problem that needs to be improved.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a long-cycle kiln sealing structure, comprising: a kiln tail smoke chamber, wherein a kiln tube is installed on the kiln tail smoke chamber;

[0007] A sealing gasket is installed at the junction of the kiln tail smoke chamber and the kiln tubes;

[0008] The fastening ring is coaxially mounted on the outside of the kiln tube and connected to the kiln tail smoke chamber;

[0009] Two sets of clamping mechanisms are set on the fastening ring. Each set of clamping mechanisms includes multiple evenly distributed clamping components, which press the sealing gasket against the surface of the kiln tube.

[0010] Furthermore, the sealing gasket includes a ring portion and a retaining ring portion, the ring portion being fitted onto the surface of the kiln tube.

[0011] Furthermore, one end of the fastening ring is provided with multiple fixing bolts, and the fastening ring is connected to the kiln tail smoke chamber through the fixing bolts. The retaining ring is located between the fastening ring and the kiln tail smoke chamber.

[0012] Furthermore, the fastening ring has multiple evenly distributed mechanical cavities, and a connecting hole is provided between the mechanical cavity and the cavity of the kiln tube. The pressing assembly includes a pressing column that is slidably connected to the connecting hole. One end of the pressing column is provided with an arc-shaped pressing ring that contacts the sealing gasket, and a pressing plate is connected to the pressing column. A mechanical spring is provided between the pressing plate and the inner end face of the mechanical cavity.

[0013] Furthermore, an annular wire groove is formed on the outer surface of the fastening ring, a rotating ring is provided in the annular wire groove, a limit ring is connected to the side of the rotating ring, an annular limit groove adapted to the limit ring is formed on the inner side wall of the annular wire groove, a pull wire is connected between the pressing column and the rotating ring, and a wire hole adapted to the pull wire is formed between the annular wire groove and the mechanism cavity.

[0014] Furthermore, the surface of the pressing column is connected to multiple limiting plates, and the inner wall of the connecting hole is provided with an adapter groove that matches the limiting plates.

[0015] The beneficial effects of this utility model are as follows: By setting a sealing gasket at the junction of the kiln tail smoke chamber and the kiln tube, and setting a pressing mechanism on the fastening ring, when the sealing surface at the junction of the sealing ring and the kiln tube is worn and the seal is not tight, the pressing component of the pressing mechanism can press the sealing gasket against the surface of the kiln tube without the need for manual operation by the staff. Moreover, the arc-shaped pressing ring can cope with the pressing of the sealing ring on the cylindrical kiln tube. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the sealing structure of the long-cycle kiln of this utility model;

[0017] Figure 2 This is a first cross-sectional view of the sealing structure of the long-cycle kiln of this utility model;

[0018] Figure 3 This is a utility model Figure 2 A magnified schematic diagram of the local structure A;

[0019] Figure 4 This is a second cross-sectional view of the sealing structure of the long-cycle kiln of this utility model;

[0020] Figure 5 This is a partial structural schematic diagram of the long-cycle operation kiln sealing structure of this utility model.

[0021] The names corresponding to each mark in the diagram:

[0022] 1. Kiln tail smoke chamber; 2. Kiln tube; 3. Sealing gasket; 31. Ring sleeve; 32. Retaining ring; 4. Fastening ring; 41. Mechanism cavity; 42. Annular wire groove; 5. Pressing assembly; 51. Pressing column; 52. Arc-shaped pressing ring; 53. Pressing plate; 54. Mechanism spring; 6. Fixing bolt; 7. Rotating ring; 8. Limiting ring; 9. Pulling line; 10. Limiting plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] Embodiments of this utility model:

[0025] like Figures 1-4 As shown, this utility model provides a sealing structure for a long-cycle kiln, including a kiln tail smoke chamber 1, a sealing gasket 3, a fastening ring 4, and two sets of clamping mechanisms. A kiln tube 2 is installed on the kiln tail smoke chamber 1. The kiln tube 2 has a circular cross-section. The sealing gasket 3 is set at the junction of the kiln tail smoke chamber 1 and the kiln tube 2. The sealing gasket 3 is made of rubber material and includes a ring part 31 and a retaining ring part 32. The ring part 31 is fitted onto the surface of the kiln tube 2. With this arrangement, the outer surface of the kiln tube 2 can be sealed through the ring part 31.

[0026] like Figures 1-2 As shown, the fastening ring 4 is coaxially arranged outside the kiln tube 2 and connected to the kiln tail smoke chamber 1. One end of the fastening ring 4 is provided with multiple fixing bolts 6. The fastening ring 4 is connected to the kiln tail smoke chamber 1 through the fixing bolts 6. The retaining ring part 32 is arranged between the fastening ring 4 and the kiln tail smoke chamber 1. With this arrangement, the connection between the fastening ring 4 and the kiln tail smoke chamber 1 can be sealed through the retaining ring part 32.

[0027] like Figures 1-5As shown, two sets of clamping mechanisms are installed on the fastening ring 4. Each set of clamping mechanisms includes multiple evenly distributed clamping components 5. The clamping components 5 press the sealing gasket 3 against the surface of the kiln tube 2. Multiple evenly distributed mechanism cavities 41 are opened inside the fastening ring 4. A connecting hole is opened between the mechanism cavity 41 and the cavity of the kiln tube 2. The clamping component includes a pressing column 51 that is slidably connected to the connecting hole. One end of the pressing column 51 is provided with an arc-shaped pressing ring 52 that contacts the sealing gasket 3. A pressing plate 53 is connected to the pressing column 51. A mechanism spring 54 is provided between the pressing plate 53 and the inner end face of the mechanism cavity 41. When the sealing surface at the junction of the sealing ring and the kiln tube 2 is worn, resulting in a poor seal, the clamping mechanism is installed. When pressed, the pressing plate 53, under the action of the mechanism spring 54, pushes the arc-shaped pressing ring 52 through the pressing column 51 to squeeze the sealing ring, pressing it tightly against the kiln tube 2. Multiple limiting plates 10 are connected to the surface of the pressing column 51, and the inner wall of the connecting hole is provided with an adaptation groove that matches the limiting plate 10. Through this setting, the arc-shaped pressing ring 52 can be limited to prevent angular deflection. It is worth mentioning that the sides of the arc-shaped pressing rings 52 of the two sets of pressing mechanisms are in contact, and the gap between adjacent arc-shaped pressing rings 52 of one set of pressing mechanisms corresponds to the arc-shaped pressing rings 52 of the other set of pressing mechanisms. The arc-shaped pressing rings 52 of the two sets of pressing mechanisms together form a complete closed ring.

[0028] like Figures 1-5 As shown, an annular wire groove 42 is provided on the outer surface of the fastening ring 4, and a rotating ring 7 is provided inside the annular wire groove 42. A limit ring 8 is connected to the side of the rotating ring 7. An annular limit groove adapted to the limit ring 8 is provided on the inner side wall of the annular wire groove 42. Multiple evenly distributed balls are provided on the limit ring 8. A ball groove adapted to the balls is provided on the inner wall of the annular limit groove. This arrangement reduces friction and facilitates rotation. A pull line 9 is connected between the pressing column 51 and the rotating ring 7. A wire hole adapted to the pull line 9 is provided between the annular wire groove 42 and the mechanism cavity 41. With this arrangement, according to actual needs, by removing the fixing bolt 6, rotating the rotating ring 7, and pulling the pressing column 51 through the pull line 9, the arc-shaped pressing ring 52 can be moved and the tightening work can be stopped. Then the sealing structure can be removed.

[0029] Specifically, by cooperating with the fixing bolt 6 and the fastening ring 4, the fastening ring 4 can be installed on the kiln tail smoke chamber 1. At the same time, by pressing the retaining ring part 32, the sealing gasket 3 is also fixed. When the sealing surface at the junction of the sealing ring and the kiln tube 2 is worn and the seal is not tight, the pressing plate 53 will push the arc-shaped pressing ring 52 to squeeze the sealing ring under the action of the mechanism spring 54 through the pressing column 51, pressing it tightly against the kiln tube 2. The arc-shaped pressing rings 52 of the two sets of pressing mechanisms together form a complete closed ring, ensuring the sealing effect. When it is necessary to remove the sealing structure, the fixing bolt 6 is removed to release the installation and fixation of the fastening ring 4. Then the rotating ring 7 is rotated, and the pressing column 51 is pulled by the pull line 9 to move the arc-shaped pressing ring 52 and stop the pressing work. Then the sealing structure can be removed.

Claims

1. A long-period operation kiln sealing structure, characterized by, The utility model relates to a sealing device for kiln tail smoke chamber, including: Kiln tail smoke chamber (1), the kiln tail smoke chamber (1) install kiln furnace tube (2) on; Sealing gasket (3) are set up in the joint of kiln tail smoke chamber (1) with kiln furnace tube (2); Fastening ring (4) are coaxially arranged the outside of kiln furnace tube (2) and are connected with kiln tail smoke chamber (1); Two groups of tight pressing mechanism, set up on fastening ring (4), each group sealing gasket (3) is pressed in the surface of kiln furnace tube (2) by the tight pressing component (5) including multiple uniform distribution tight pressing component (5).

2. A long-period operation kiln sealing structure according to claim 1, characterized in that: The sealing gasket (3) includes ring sleeve part (31) and baffle ring part (32), the ring sleeve part (31) is set in the surface of kiln furnace tube (2).

3. A long-period operation kiln sealing structure according to claim 2, characterized in that: The fastening ring (4) one end is provided with a plurality of fixed bolts (6), the fastening ring (4) is connected with kiln tail smoke chamber (1) through fixed bolt (6), the baffle ring part (32) is arranged between fastening ring (4) and kiln tail smoke chamber (1).

4. A long period operation kiln sealing structure according to claim 1, characterized in that: The fastening ring (4) is provided with a plurality of evenly distributed mechanism cavities (41) in, the mechanism cavity (41) is provided with a communication hole between the lumen of kiln furnace tube (2), the tight pressing component (5) includes the pressing column (51) of sliding connection with communication hole, the pressing column (51) one end is provided with the arc pressing ring (52) of contact with sealing gasket (3), and the pressing column (51) is connected with pressing plate (53), and the pressing plate (53) is provided with mechanism spring (54) between the inner end surface of mechanism cavity (41).

5. A long-period operation kiln sealing structure according to claim 4, characterized in that: The outer surface of fastening ring (4) is provided with annular wire groove (42), the annular wire groove (42) is provided with rotating ring (7), the side of rotating ring (7) is connected with limiting ring (8), the inner side wall of annular wire groove (42) is provided with annular limiting slot that is matched with limiting ring (8), the pressing column (51) is connected with pulling line (9) between rotating ring (7), the annular wire groove (42) is provided with wire hole that is matched with pulling line (9) between mechanism cavity (41).

6. A long period operation kiln sealing structure according to claim 4, wherein: The surface of pressing column (51) is connected with a plurality of limiting plates (10), the inner wall of communication hole is provided with the matching groove that is matched with limiting plate (10).

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