Novel spring plate assembly of large rotary kiln

Abstract

The invention relates to the fields of iteration, technical upgrading and reconstruction and the like of large rotary kiln series equipment, and discloses a novel spring plate assembly of a large rotary kiln, the novel spring plate assembly comprises a kiln body, a gear ring and a spring plate assembly, the spring plate assembly comprises a C-shaped seat, a spring plate, a pressing plate and a bolt connecting pair, and an opening of the C-shaped seat faces the kiln body; the two C-shaped seats are symmetrically installed on a kiln body along the gear ring, the multiple spring plates are installed on the C-shaped seats after being overlapped, the two pressing plates are installed at the tops of the two ends of the spring plates respectively, the C-shaped seats, the spring plates and the pressing plates are fixedly connected through the bolt connecting pairs, and positioning holes connected with the C-shaped seats are machined in one ends and the middles of the spring plates respectively. A strip-shaped hole parallel to the axis of the kiln body is machined in the other end of the spring plate, and a sliding cushion block matched with the bolt connecting pair is installed in the strip-shaped hole. By arranging the spring plate assembly, the size of the gear ring is effectively reduced, the structure of the rotary kiln is greatly simplified, and maintenance of the rotary kiln is more concise.

Description

Technical Field

[0001] The invention relates to the fields of iteration, technical upgrading and transformation of large rotary kiln series equipment, and in particular to a new spring plate assembly for a large rotary kiln. Background Art

[0002] A rotary kiln is also called a rotary kiln. The rotary kiln drives the material to move during the continuous rotation of the inclined kiln body. The kiln body is driven to rotate by the externally installed electric motor and the meshing of the gear ring. Since the rotary kiln needs to calcine the material during operation, the calcination temperature is extremely high. During the calcination process, the kiln body will produce a certain amount of thermal expansion. Therefore, the inner diameter of the gear ring is much larger than the outer diameter of the kiln body. Therefore, in order to ensure that the rotary kiln is not affected by thermal expansion and contraction, the prior art is to install an involute spring plate between the rotary kiln and the gear ring to realize transmission, such as the variable stiffness transmission device of the rotary kiln disclosed in application number 201220224116.X, as shown in detail. Figure 1 As shown, its characteristic is that the kiln body is driven to rotate by a number of spring plates tangent to the outer wall of the kiln body. During the rotation of the kiln body, affected by the expansion of the kiln body, the size of the gear ring needs to be further increased, which eventually causes the size of the gear ring of the rotary kiln to increase. The increase in size also means that the raw material consumption of the gear ring is large and the weight is heavy, which greatly increases the complexity and maintenance cost of daily maintenance. In addition, the investment cost of the rotary kiln is extremely high, and the gear ring is a transmission component, which has a large amount of wear. During the equipment maintenance process, the investment cost is high. Therefore, in the process of equipment upgrade, it is particularly important to reduce the maintenance cost of the rotary kiln. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and provide a new spring plate assembly for a large rotary kiln. The spring plate adopts a brand-new structure, which can not only adapt to the thermal expansion of the kiln body, but also reduce the distance between the gear ring and the kiln body, thereby greatly reducing the consumption of raw materials. At the same time, it can also effectively reduce the weight, making its maintenance more convenient.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A new spring plate assembly for a large rotary kiln comprises a kiln body, a gear ring sleeved on the outside of the kiln body, and a spring plate assembly connecting the kiln body and the gear ring. A plurality of spring plate assemblies are evenly distributed in a ring shape on the kiln body inside the gear ring. The spring plate assembly comprises a C-shaped seat, a spring plate, a pressure plate and a bolt connection pair. The opening of the C-shaped seat faces the kiln body. Two C-shaped seats are symmetrically mounted on the kiln body along the gear ring. A plurality of spring plates are overlapped and mounted on the C-shaped seat. Two pressure plates are respectively mounted on the top of both ends of the spring plate. The bolt connection pair fixes the C-shaped seat, the spring plate and the pressure plate. A positioning hole matching the bolt connection pair is processed at one end of the spring plate, and a strip hole parallel to the axis of the kiln body is processed at the other end of the spring plate. A sliding pad matching the bolt connection pair is installed in the strip hole. A connection hole corresponding to the gear ring is processed in the middle of the spring plate.

[0006] The sizes of the C-shaped seat, the spring plate and the pressure plate are adapted to the diameter of the kiln body.

[0007] The thickness of the spring plate is 2 to 4 mm, and the number of overlapping spring plates is 4 to 12.

[0008] The length of the sliding pad is 0 to 5 mm greater than the length of the multiple overlapping rear spring plates.

[0009] The novel spring plate assembly for a large rotary kiln provided by the present invention has the following beneficial effects:

[0010] (1) By providing a spring plate assembly to replace the existing involute spring plate, the size of the gear ring is effectively reduced, thereby reducing material loss and saving energy. At the same time, the structure of the rotary kiln is greatly simplified, making the maintenance of the rotary kiln simpler;

[0011] (2) By setting the sliding pad, the wear of the spring plate on the bolt connection pair can be reduced when the kiln body expands due to heat, thereby increasing the service life of the bolt connection pair and effectively extending the maintenance cycle;

[0012] (3) By setting up a C-shaped seat, the C-shaped seat can adapt to the deformation of the kiln body during thermal expansion and contraction by utilizing its own opening characteristics, thereby ensuring the supporting effect of the spring plate;

[0013] (4) By providing strip holes on the spring plate, the influence of thermal expansion and contraction of the kiln body on the spring plate can be reduced, and the supporting effect of the spring plate on the gear ring can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is an involute spring plate in the prior art.

[0016] Figure 2 A schematic diagram of the structure provided for an embodiment of the present invention Figure 1 .

[0017] Figure 3 A schematic diagram of the structure provided for an embodiment of the present invention Figure 2 .

[0018] Figure 4 A structural schematic diagram of a spring plate is provided for an embodiment of the present invention.

[0019] Figure numerals: 1, kiln body; 2, gear ring; 3, C-shaped seat; 4, spring plate; 5, pressure plate; 6, bolt connection pair; 7, sliding pad; 8, positioning hole; 9, strip hole; 10, connecting hole. DETAILED DESCRIPTION

[0020] Example

[0021] like Figure 2 to Figure 4As shown, the novel spring plate assembly of the large rotary kiln provided in this embodiment comprises a kiln body 1, a gear ring 2 sleeved on the outside of the kiln body 1, and a spring plate assembly connecting the kiln body 1 and the gear ring 2. A plurality of spring plate assemblies are evenly distributed in a ring shape on the kiln body 1 on the inner side of the gear ring 2. The larger the diameter of the kiln body 1, the more spring plate assemblies are used. The spring plate assembly comprises a C-shaped seat 3, a spring plate 4, a pressure plate 5 and a bolt connection pair 6. The opening of the C-shaped seat 3 faces the kiln body 1, and the edges of the two ends of the opening of the C-shaped seat 3 are parallel to the axis of the kiln body 1. The C-shaped seat 3 can adapt to the size deviation caused by the radial expansion of the kiln body 1. Two C-shaped seats 3 are symmetrically installed on the kiln body 1 along the gear ring 2. A certain gap is left between the two C-shaped seats 3 and the gear ring 2. Multiple spring plates 4 are overlapped and installed on the C-shaped seat 3. The size and number of the spring plates 4 are adapted to the diameter of the kiln body 1. The larger the diameter of the kiln body 1, the smaller the spring plate 4. The larger the area, the thicker the thickness, and the more overlapping pieces. The thickness of the spring plate 4 is 2 to 4 mm, and the number of overlapping spring plates 4 is 4 to 12 pieces. Two pressure plates 5 are respectively installed on the top of the two ends of the spring plate 4. The bolt connection pair 6 fixes the C-shaped seat 3, the spring plate 4 and the pressure plate 5. One end of the spring plate 4 is processed with a positioning hole 8 aligned with the bolt connection pair 6, and the other end of the spring plate 4 is processed with a strip hole 9 parallel to the axis of the kiln body 1. A sliding pad 7 adapted to the bolt connection pair 6 is installed in the strip hole 9. The positioning hole 8 and the strip hole 9 cooperate to adapt to the dimensional deviation caused by the axial expansion of the kiln body 1. In order to improve the expansion effect of the spring plate 4, the length of the sliding pad 7 is 0 to 5 mm longer than the spring plate after multiple pieces are overlapped. A connecting hole 10 corresponding to the gear ring 2 is processed in the middle of the spring plate 4. There are four connecting holes 10, which are connected to the gear ring 2 by bolts. Table 1 is a corresponding table for the selection of spring plate components:

[0022] Table 1 is the corresponding table for the selection of spring plate components

[0023]

[0024] As shown in Table 1, the larger the size of the kiln body 1, the greater the number of spring plate assemblies, the corresponding sizes of the C-shaped seat 3, spring plate 4, pressure plate 5, sliding pad 6, and bolt connection pair 7 in the spring plate assembly gradually increase, and the number of spring plates 4 gradually increases.

[0025] Compared with the involute spring plates of existing large rotary kilns, the new spring plates disclosed in this patent have greatly simplified the structure of the spring plates, effectively reduced the production costs of the spring plates, and have a simple structure, which greatly improves the stability of the equipment and reduces the maintenance costs. At the same time, compared with the existing involute spring plates, the new spring plates disclosed in this patent have greatly reduced the space occupied, thereby improving the flexibility of the use of the rotary kiln. In addition, in recent years, during the process of "factory technology upgrading and transformation", enterprises have replaced the new spring plates disclosed in this patent, which can retain the original large gear ring and effectively reduce the workload and transformation costs.

[0026] The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention shall be included in the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitation of the present invention.

Claims

1. A novel spring plate assembly for a large rotary kiln, comprising a kiln body (1), a gear ring (2) mounted on the outside of the kiln body (1), and a spring plate assembly connecting the kiln body (1) and the gear ring (2), wherein a plurality of spring plate assemblies are evenly distributed in an annular shape on the kiln body (1) inside the gear ring (2), and characterized in that: The spring plate assembly comprises a C-shaped seat (3), a spring plate (4), a pressure plate (5) and a bolt connection pair (6); the opening of the C-shaped seat (3) faces the kiln body (1); two C-shaped seats (3) are symmetrically mounted on the kiln body (1) along the gear ring (2); a plurality of spring plates (4) are mounted on the C-shaped seat (3) after being overlapped; two pressure plates (5) are respectively mounted on the top of both ends of the spring plate (4); the bolt connection pair (6) fixes the C-shaped seat (3), the spring plate (4) and the pressure plate (5); one end of the spring plate (4) is processed with a positioning hole (8) adapted to the bolt connection pair (6); the other end of the spring plate (4) is processed with a strip hole (9) parallel to the axis of the kiln body (1); a sliding pad (7) adapted to the bolt connection pair (6) is mounted in the strip hole (9); and a connection hole (10) corresponding to the gear ring (2) is processed in the middle of the spring plate (4).

2. The novel spring plate assembly for large rotary kiln according to claim 1 is characterized in that: The sizes of the C-shaped seat (3), the spring plate (4) and the pressure plate (5) are adapted to the diameter of the kiln body (1).

3. The novel spring plate assembly for large rotary kiln according to claim 2 is characterized in that: The thickness of the spring plate (4) is 2 to 4 mm, and the number of overlapping spring plates (4) is 4 to 12.

4. The novel spring plate assembly for large rotary kiln according to claim 1 is characterized in that: The length of the sliding pad (7) is 0 to 5 mm greater than the length of the multiple overlapping rear spring plates (4).

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