A rotary kiln head and tail sealing device

Abstract

The present invention discloses a sealing device for the head and tail of a rotary kiln, which includes a rotary kiln body. A kiln head feed port is provided on one side of the rotary kiln body. Sealing mechanisms are arranged at both the head and the tail of the rotary kiln body. The sealing mechanism includes a clamping mechanism. The sealing mechanism includes a top sealing plate, a front sealing piece and a front fixing plate. One side of the top sealing plate is fixedly connected to one side of the front fixing plate through a first fixing bolt. The present invention relates to the technical field of rotary kilns. For this sealing device for the head and tail of the rotary kiln, by providing a sealing mechanism, the movement of two movable side sealing pieces, a fixed side sealing piece and a fixed base is utilized, and in cooperation with the top sealing plate, the front sealing piece, the sealing triangular plate, the top fixing plate and the sealing air interface, the sealing effect of the head and tail of the kiln is better, the structure is simple and reliable, and it can effectively prevent the leakage of materials and flue gas, greatly protecting the ecological environment and at the same time saving the consumed resources.

Description

Technical Field

[0001] The present invention relates to the technical field of rotary kilns, and specifically relates to a sealing device for the head and tail of a rotary kiln. Background Art

[0002] A rotary kiln consists of processes such as gas flow, fuel combustion, heat transfer, and material movement. The rotary kiln is about how to enable the fuel to burn fully, and the heat generated by fuel combustion can effectively be transferred to the material. After the material receives heat, a series of physical and chemical changes occur, and finally the finished clinker is formed. Metallurgical and chemical kilns are mainly used in the metallurgical industry for magnetization roasting of lean iron ores in steel plants; oxidation roasting of chromium and nickel iron ores; roasting of high-metallurgical ores in refractory material plants and roasting of clinker and aluminum hydroxide in aluminum plants; roasting of chromium ore sand and chromium ore powder and other minerals in chemical plants; lime kilns (i.e., active lime kilns) for roasting active lime and light-burned dolomite used in steel plants and ferroalloy plants.

[0003] During the use of existing rotary kilns, due to the poor airtightness at the head and tail of the kiln, leakage of flue gas and materials often occurs, resulting in heat and economic losses. At the same time, some sealing devices at the head and tail of the kiln need to be replaced after long-term use. However, the existing ones are extremely inconvenient to overhaul and replace, and it is rather time-consuming. For this reason, the present invention provides a sealing device for the head and tail of a rotary kiln. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a sealing device for the head and tail of a rotary kiln, which solves the problems of poor airtightness during the use of existing rotary kilns and extremely inconvenient overhaul and replacement of some sealing devices.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A sealing device for the head and tail of a rotary kiln includes a rotary kiln body. A kiln head feed port is provided on one side of the rotary kiln body. Sealing mechanisms are provided at both the head and tail of the rotary kiln body. The sealing mechanism includes a clamping mechanism. The sealing mechanism includes a top sealing plate, a front sealing piece, and a front fixing plate. One side of the top sealing plate is fixedly connected to one side of the front fixing plate through a first fixing bolt. One side of the front fixing plate is fixedly connected to one side of the front sealing piece through a first fixing bolt. A sealing triangular plate is fixedly connected to the surface of the rotary kiln body. A fixed base is slidably connected to the surface of the rotary kiln body and on one side of the sealing triangular plate. Two movable side sealing pieces are fixedly connected to one side of the fixed base through a first fixing bolt. One side of the top sealing plate is fixedly connected to a top fixing plate through a second fixing bolt. One side of the top fixing plate is fixedly connected to a fixed side sealing piece through a first fixing bolt.

[0006] Preferably, the surface of the front sealing piece is fixedly connected to the surface of the sealing triangular plate, and the front sealing piece has a certain resilience. A sealing air interface is provided on the surface of the top sealing plate and on one side of the second fixing bolt.

[0007] Preferably, the fixed side sealing piece is located between the opposite sides of the two movable side sealing pieces, and the surface of the fixed side sealing piece does not contact the surface of the movable side sealing piece. A reinforcing plate is fixedly connected to the surface of the top sealing plate.

[0008] Preferably, the clamping mechanism includes a sliding plate. Through grooves are provided at both the head and tail of the rotary kiln body, and a placement groove is provided on one side of each through groove, and a clamping groove is provided on the other side.

[0009] Preferably, a limiting handle is fixedly connected to the surface of the sliding plate. A limiting plate is fixedly connected to one side of the sliding plate. A spring column is fixedly connected to one side of the limiting plate, and one end of the spring column is fixedly connected to the inner surface of the placement groove.

[0010] Preferably, the outer surface of the limiting plate is slidably connected to the inner surface of the placement groove. A first convex block is fixedly connected to one side of the top sealing plate, and an embedding groove is provided on one side of the first convex block.

[0011] Preferably, a second convex block is fixedly connected to the other side of the first convex block, and the outer surface of the second convex block is slidably connected to the inner surface of the clamping groove.

[0012] Preferably, the inner surface of the embedding groove is slidably connected to the outer surface of the sliding plate, and the outer surface of the sliding plate is slidably connected to the surface of the top sealing plate.

[0013] Beneficial effects

[0014] The present invention provides a sealing device for the head and tail of a rotary kiln. Compared with the prior art, it has the following beneficial effects:

[0015] (1). The sealing device for the head and tail of the rotary kiln includes a top sealing plate, a front sealing piece, and a front fixing plate in the sealing mechanism. One side of the top sealing plate is fixedly connected to one side of the front fixing plate through a first fixing bolt, and one side of the front fixing plate is fixedly connected to one side of the front sealing piece through a first fixing bolt. A sealing triangular plate is fixedly connected to the surface of the rotary kiln body. A fixed base is slidably connected to the surface of the rotary kiln body and on one side of the sealing triangular plate. Two moving side sealing pieces are fixedly connected to one side of the fixed base through a first fixing bolt. One side of the top sealing plate is fixedly connected to a top fixing plate through a second fixing bolt, and one side of the top fixing plate is fixedly connected to a fixed side sealing piece through a first fixing bolt. The surface of the front sealing piece is fixedly connected to the surface of the sealing triangular plate, and the front sealing piece has a certain resilience. A sealing air interface is provided on the surface of the top sealing plate and on one side of the second fixing bolt. The fixed side sealing piece is located between the opposite sides of the two moving side sealing pieces, and the surface of the fixed side sealing piece does not contact the surface of the moving side sealing piece. A reinforcing plate is fixedly connected to the surface of the top sealing plate. By providing the sealing mechanism, with the movement of the two moving side sealing pieces, the fixed side sealing piece, and the fixed base, and in cooperation with the top sealing plate, the front sealing piece, the front fixing plate, the sealing triangular plate, the top fixing plate, and the sealing air interface, the sealing effect of the head and tail of the kiln is better, the structure is simple and reliable, and it can effectively prevent the leakage of materials and flue gas, greatly protecting the ecological environment and saving the consumed resources at the same time.

[0016] (2). The sealing device for the head and tail of the rotary kiln includes a sliding plate in the clamping mechanism. Through grooves are provided at both the head and tail of the rotary kiln body, and a placement groove is provided on one side of each through groove, and a clamping groove is provided on the other side. A limiting handle is fixedly connected to the surface of the sliding plate. A limiting plate is fixedly connected to one side of the sliding plate, and a spring column is fixedly connected to one side of the limiting plate. One end of the spring column is fixedly connected to the inner surface of the placement groove. The outer surface of the limiting plate is slidably connected to the inner surface of the placement groove. A first convex block is fixedly connected to one side of the top sealing plate. An embedding groove is provided on one side of the first convex block, and a second convex block is fixedly connected to the other side of the first convex block. The outer surface of the second convex block is slidably connected to the inner surface of the clamping groove. The inner surface of the embedding groove is slidably connected to the outer surface of the sliding plate. The outer surface of the sliding plate is slidably connected to the surface of the top sealing plate. By providing the clamping mechanism, with the clamping of the sliding plate and the embedding groove and the elasticity of the spring column, and in cooperation with the placement groove, the clamping groove, the limiting handle, the limiting plate, the first convex block, and the second convex block, it is more convenient to disassemble and install the sealing device, greatly facilitating the maintenance and installation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the main external structure view of the present invention;

[0018] Figure 2 for the present inventionFigure 1 Enlarged view of the local structure at position A

[0019] Figure 3 Is a three-dimensional view of the local structure of the present invention

[0020] In the figure: 1- Rotary kiln body, 2- Kiln head feed inlet, 3- Sealing mechanism, 31- Top sealing plate, 32- Front sealing piece, 33- Front fixing plate, 34- First fixing bolt, 35- Sealing triangular plate, 36- Fixed base, 37- Movable side sealing piece, 38- Second fixing bolt, 39- Top fixing plate, 310- Fixed side sealing piece, 311- Sealing air interface, 312- Reinforcing plate, 4- Clamping mechanism, 41- Slide plate, 42- Placing groove, 43- Card slot, 44- Limit handle, 45- Limit plate, 46- Spring column, 47- First convex block, 48- Insertion groove, 49- Second convex block Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention

[0022] Please refer to Figures 1-3, the present invention provides a technical solution: a rotary kiln head and tail sealing device, including a rotary kiln body 1. A kiln head feeding port 2 is provided on one side of the rotary kiln body 1. Sealing mechanisms 3 are provided at both the head and tail of the rotary kiln body 1. The sealing mechanism 3 includes a clamping mechanism 4. The clamping mechanism 4 includes a sliding plate 41, and the sliding plate 41 is slidably clamped inside the embedding groove 48. Through grooves are provided at both the head and tail of the rotary kiln body 1, and a placement groove 42 is provided on one side of the through groove for placing the sliding plate 41, and a clamping groove 43 is provided on the other side. A limiting handle 44 is fixedly connected to the surface of the sliding plate 41. A limiting plate 45 is fixedly connected to one side of the sliding plate 41 for preventing the sliding plate 41 from detaching. A spring column 46 is fixedly connected to one side of the limiting plate 45, and the spring column 46 makes the device airtight. One end of the spring column 46 is fixedly connected to the inner surface of the placement groove 42, and the outer surface of the limiting plate 45 is slidably connected to the inner surface of the placement groove 42. A first convex block 47 is fixedly connected to one side of the top sealing plate 31. An embedding groove 48 is provided on one side of the first convex block 47. A second convex block 49 is fixedly connected to the other side of the first convex block 47, and the second convex block 49 is slidably clamped with the clamping groove 43. The outer surface of the second convex block 49 is slidably connected to the inner surface of the clamping groove 43. The inner surface of the embedding groove 48 is slidably connected to the outer surface of the sliding plate 41, and the outer surface of the sliding plate 41 is slidably connected to the surface of the top sealing plate 31. By providing the sealing mechanism 3, through the movement of the two moving side sealing pieces 37, the fixed side sealing piece 310 and the fixed base 36, and in cooperation with the top sealing plate 31, the front end sealing piece 32, the front end fixing plate 33, the sealing triangular plate 35, the top fixing plate 39 and the sealing air interface 311, the sealing effect of the head and tail of the kiln is better, the structure is simple and reliable, and it can effectively prevent the leakage of materials and flue gas, greatly protecting the ecological environment and saving the consumed resources at the same time. The sealing mechanism 3 includes a top sealing plate 31, a front end sealing piece 32 and a front end fixing plate 33. This sealing mechanism 3 is mainly installed above and below the head and tail of the rotary kiln. Generally, a sealing air interface 311 is provided on the sealing mechanism 3 body installed above, and no sealing air interface 311 is provided on the sealing device body installed below. One side of the top sealing plate 31 is fixedly connected to one side of the front end fixing plate 33 through a first fixing bolt 34. One side of the front end fixing plate 33 is fixedly connected to one side of the front end sealing piece 32 through a first fixing bolt 34. A sealing triangular plate 35 is fixedly connected to the surface of the rotary kiln body 1. A fixed base 36 is slidably connected to the surface of the rotary kiln body 1 and on one side of the sealing triangular plate 35. Two moving side sealing pieces 37 are fixedly connected to one side of the fixed base 36 through a first fixing bolt 34. One side of the top sealing plate 31 is fixedly connected to a top fixing plate 39 through a second fixing bolt 38. A fixed side sealing piece 310 is fixedly connected to one side of the top fixing plate 39 through a first fixing bolt 34. The surface of the front end sealing piece 32 is fixedly connected to the surface of the sealing triangular plate 35,Moreover, the front-end sealing piece 32 has a certain resilience. On the surface of the top sealing plate 31 and on one side of the second fixing bolt 38, a sealed air interface 311 is provided. The fixed-side sealing piece 310 is located between the opposite sides of the two movable-side sealing pieces 37, and the surface of the fixed-side sealing piece 310 does not contact the surface of the movable-side sealing piece 37. A reinforcing auxiliary plate 312 is fixedly connected to the surface of the top sealing plate 31. The sealing device is installed above and below the kiln head. Due to the differences between the fixed end of the kiln head and the fixed end of the kiln tail, the size and position of the reinforcing auxiliary plate 312 can be appropriately adjusted. By providing a clamping mechanism 4, using the clamping of the sliding plate 41 and the embedding groove 48 and the elasticity of the spring column 46, in cooperation with the placement groove 42, the clamping groove 43, the limiting handle 44, the limiting plate 45, the first convex block 47 and the second convex block 49, the disassembly and installation of the sealing device can be made more convenient, which greatly facilitates the maintenance and installation of the staff. At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.,

[0023] Installation work: First, the second convex block 49 on the top sealing plate 31 is clamped with the clamping groove 43 at the kiln head and kiln tail, and then the embedding groove 48 inside the first convex block 47 is clamped with the sliding plate 41. At this time, the movement of the sliding plate 41 will be pressed, causing the spring column 46 to contract, thereby realizing fixed installation. By providing a clamping mechanism 4, using the clamping of the sliding plate 41 and the embedding groove 48 and the elasticity of the spring column 46, in cooperation with the placement groove 42, the clamping groove 43, the limiting handle 44, the limiting plate 45, the first convex block 47 and the second convex block 49, the disassembly and installation of the sealing device can be made more convenient, which greatly facilitates the maintenance and installation of the staff;

[0024] During operation, due to the thermal expansion and contraction of the rotary kiln body 1, the length of the rotary kiln body 1 will change. When the rotary kiln body 1 is heated and expands, the fixed base 36 connects the movable-side sealing piece 37 and moves together towards the kiln tail direction. The fixed-side sealing piece moves relatively leftward in the middle of the two movable-side sealing pieces 37, but always remains between the two movable-side sealing pieces 37. The front-end sealing piece 32 moves relatively leftward, but due to its elasticity, it will continue to closely adhere to the sealing triangular plate 35, thereby ensuring that the flue gas at the kiln head (kiln tail) does not leak. At the same time, the sealing air is introduced into the sealing area through the sealed air interface 311 on the top sealing plate 31, so that the sealing area is always in a sealed air atmosphere;

[0025] When the main body 1 of the rotary kiln cools and shrinks, the fixed base 36 is connected to the movable side sealing piece 37 and moves together towards the kiln head direction. The fixed side sealing piece moves relatively to the right between the two movable side sealing pieces 37, but always remains between the two movable side sealing pieces 37. The front end sealing piece 32 moves relatively to the right, but due to its elasticity, it will continue to closely adhere to the sealing triangular plate 35, thereby ensuring that the flue gas at the kiln head (kiln tail) does not leak out. At the same time, the sealing air is introduced into the sealing area through the sealing air interface 311 on the top sealing plate 31, so that the sealing area is always in a sealing air atmosphere. By providing the sealing mechanism 3, using the movement of the two movable side sealing pieces 37, the fixed side sealing piece 310 and the fixed base 36, and cooperating with the top sealing plate 31, the front end sealing piece 32, the front end fixing plate 33, the sealing triangular plate 35, the top fixing plate 39 and the sealing air interface 311, the sealing effect of the kiln head and kiln tail is better, the structure is simple and reliable, and it can effectively prevent the leakage of materials and flue gas, greatly protecting the ecological environment and saving the consumed resources at the same time.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for the head and tail of a rotary kiln, comprising a rotary kiln body (1), and a kiln head feed inlet (2) is provided on one side of the rotary kiln body (1), characterized in that: Sealing mechanisms (3) are provided at both the head and the tail of the rotary kiln body (1), and the sealing mechanisms (3) include clamping mechanisms (4). The sealing mechanisms (3) include a top sealing plate (31), a front sealing piece (32) and a front fixing plate (33). One side of the top sealing plate (31) is fixedly connected to one side of the front fixing plate (33) by a first fixing bolt (34). One side of the front fixing plate (33) is fixedly connected to one side of the front sealing piece (32) by a first fixing bolt (34). A sealing triangular plate (35) is fixedly connected to the surface of the rotary kiln body (1). A fixed base (36) is slidably connected to the surface of the rotary kiln body (1) and on one side of the sealing triangular plate (35). Two moving side sealing pieces (37) are fixedly connected to one side of the fixed base (36) by a first fixing bolt (34). One side of the top sealing plate (31) is fixedly connected to a top fixing plate (39) by a second fixing bolt (38). A fixed side sealing piece (310) is fixedly connected to one side of the top fixing plate (39) by a first fixing bolt (34). The surface of the front sealing piece (32) is fixedly connected to the surface of the sealing triangular plate (35), and the front sealing piece (32) has a certain resilience. A sealing air interface (311) is provided on the surface of the top sealing plate (31) and on one side of the second fixing bolt (38). The fixed side sealing piece (310) is located between the opposite sides of the two moving side sealing pieces (37), and the surface of the fixed side sealing piece (310) does not contact the surface of the moving side sealing pieces (37). A reinforcing auxiliary plate (312) is fixedly connected to the surface of the top sealing plate (31). The clamping mechanisms (4) include sliding plates (41). Through grooves are provided at both the head and the tail of the rotary kiln body (1), and a placement groove (42) is provided on one side of each through groove, and a clamping groove (43) is provided on the other side. A limiting handle (44) is fixedly connected to the surface of the sliding plate (41). A limiting plate (45) is fixedly connected to one side of the sliding plate (41). A spring column (46) is fixedly connected to one side of the limiting plate (45). One end of the spring column (46) is fixedly connected to the inner surface of the placement groove (42). The outer surface of the limiting plate (45) is slidably connected to the inner surface of the placement groove (42). A first convex block (47) is fixedly connected to one side of the top sealing plate (31). An embedding groove (48) is provided on one side of the first convex block (47).

2. The rotary kiln head and tail seal device according to claim 1, characterized in that: A second convex block (49) is fixedly connected to the other side of the first convex block (47). The outer surface of the second convex block (49) is slidably connected to the inner surface of the clamping groove (43).

3. The rotary kiln head and tail seal device according to claim 1, characterized in that: The inner surface of the embedding groove (48) is slidably connected to the outer surface of the sliding plate (41). The outer surface of the sliding plate (41) is slidably connected to the surface of the top sealing plate (31).

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