A seal for a coal mill base

Abstract

The utility model relates to coal mill base seal technical field discloses a kind of coal mill base sealing devices, comprising: coal mill base, the transmission shaft is rotatably connected on the coal mill base;Convenient replacement component, the convenient replacement component is set on coal mill base, and the convenient replacement component is used to improve the convenience of seal replacement;Compression solid component, the compression solid component is set on convenient replacement component, and the compression solid component is used to compress solid to seal piece.The utility model is in overall design by convenient replacement component, knife edge is set on rubber ring, so that rubber ring is in disconnected state, and rubber ring can produce elastic deformation due to the characteristics of material, user can break open rubber ring, and then rubber ring can be installed or disassembled on the side of transmission shaft, without replacement from end, so that driving structure and transmission shaft can keep connection relationship, improve the efficiency of replacement maintenance.

Description

Technical Field

[0001] This utility model relates to the field of coal mill base sealing technology, specifically, to a coal mill base sealing device. Background Technology

[0002] A coal mill is an industrial device used to crush and grind coal into pulverized coal, widely used in thermal power generation, cement manufacturing, metallurgy, and chemical industries. Its core working principle involves coal powder preparation through three methods: crushing, impact crushing, and grinding, with the specific method varying depending on the type of equipment. Based on rotational speed, it can be divided into three categories: low-speed, medium-speed, and high-speed, with different speeds corresponding to different coal types and energy consumption characteristics.

[0003] A drive shaft needs to be introduced into the base of the coal mill. At this time, a sealing device needs to be designed at the connection. The main components of the sealing device are rubber rings, etc. Rubber rings will wear out and therefore need to be replaced regularly. When replacing the rubber rings in traditional sealing devices, it is necessary to disconnect the connection between the drive structure and the shaft, and then put the rubber ring or pressure ring on the end of the shaft. This maintenance process is quite cumbersome. Utility Model Content

[0004] The purpose of this utility model is to provide a coal mill base sealing device, which solves the problem that in the prior art, when replacing the rubber ring of the sealing device, it is necessary to disconnect the connection between the drive structure and the shaft, which is a rather cumbersome process.

[0005] This utility model provides the following technical solution: a coal mill base sealing device, comprising: A coal mill base, on which a drive shaft is rotatably connected; A convenient replacement component is provided on the coal mill base to improve the ease of replacing seals. A clamping assembly, which is disposed on a convenient replacement assembly, is used to clamp the seal; The convenient replacement component includes a raised plate seat, which is fixedly installed on the outer wall of the coal mill base. An annular seat is fixedly installed on the outer wall of the raised plate seat. The drive shaft passes through the raised plate seat and the annular seat. An annular groove is provided on the annular seat. A rubber ring is movably inserted into the inner cavity of the annular groove. A cutting edge is provided on the rubber ring.

[0006] As a preferred embodiment of the above technical solution, the pressing assembly includes a protrusion block, which is fixedly installed on the outer wall of the protrusion plate seat. A crossbar is fixedly installed on the outer wall of the protrusion block, and a sliding sleeve is slidably connected to the outer wall of the crossbar.

[0007] As a preferred embodiment of the above technical solution, an adjusting bolt is threadedly connected to the outer wall of the sliding sleeve, and the threaded end of the adjusting bolt movably abuts against the outer wall of the crossbar.

[0008] As a preferred embodiment of the above technical solution, a sleeve component is fixedly installed on the top of the sliding sleeve, an insert block is movably inserted into the inner cavity of the sleeve component, and a connecting arm is fixedly installed on the outer wall of the insert block.

[0009] As a preferred embodiment of the above technical solution, an assembly bolt is threadedly connected to the outer wall of the sleeve, and the threaded end of the assembly bolt movably abuts against the outer wall of the insert block.

[0010] As a preferred embodiment of the above technical solution, a reference plate is fixedly installed at the end of the connecting arm, an I-shaped slide rod is slidably connected to the inner wall of the reference plate, and a handle is fixedly installed at the end of the I-shaped slide rod.

[0011] As a preferred embodiment of the above technical solution, a pressure plate is fixedly installed at the end of the I-shaped slide bar away from the handle, a spring is fixedly installed on the outer wall of the pressure plate, and the end of the spring away from the pressure plate is fixedly installed on the outer wall of the reference plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a convenient replacement component design. The rubber ring has a cutting edge, allowing it to be in a disconnected state. Due to the material properties, the rubber ring can undergo elastic deformation, allowing the user to pry it open. This enables the rubber ring to be installed or removed from the side of the drive shaft without having to replace it from the end. This ensures that the drive structure and the drive shaft remain connected, improving the efficiency of replacement and maintenance. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a structural schematic diagram of the convenient replacement component of this utility model; Figure 3 This is a schematic diagram of the structure of the sleeve component of this utility model; Figure 4 This is a schematic diagram of the structure of the pressure-fixing plate component of this utility model.

[0014] In the diagram: 1. Coal mill base; 11. Drive shaft; 2. Convenient replacement component; 21. Raised plate seat; 22. Annular seat; 23. Annular groove; 24. Rubber ring; 25. Knife edge; 3. Pressure fixing component; 31. Raised block; 32. Crossbar; 33. Sliding sleeve; 34. Adjusting bolt; 35. Sleeve component; 36. Assembly bolt; 37. Insert block; 38. Connecting arm; 39. Base plate; 391. I-shaped slide bar; 392. Spring; 393. Pressure fixing plate component; 394. Handle. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figures 1-4 As shown, this utility model provides a technical solution: a coal mill base sealing device, comprising: A coal mill base 1, on which a drive shaft 11 is rotatably connected; Easy Replacement Component 2 is installed on the coal mill base 1 and is used to improve the ease of replacing the seals. The clamping assembly 3 is mounted on the convenient replacement assembly 2 and is used to clamp the seal. The convenient replacement component 2 includes a raised plate seat 21, which is fixedly installed on the outer wall of the coal mill base 1. An annular seat 22 is fixedly installed on the outer wall of the raised plate seat 21. The drive shaft 11 passes through the raised plate seat 21 and the annular seat 22. An annular groove 23 is provided on the annular seat 22. A rubber ring 24 is movably inserted into the inner cavity of the annular groove 23. A knife edge 25 is provided on the rubber ring 24. During use, the rubber ring 24 is used to seal the connection between the annular seat 22 and the drive shaft 11 to prevent dust leakage. Due to the design of the knife edge 25, the rubber ring 24 is in a disconnected state. Due to the material properties, the rubber ring 24 can undergo elastic deformation. The user can pry open the rubber ring 24, and then install or remove the rubber ring 24 from the side of the drive shaft 11, improving the efficiency of replacement and maintenance.

[0017] As one implementation method in this embodiment, such as Figure 3 As shown, the clamping assembly 3 includes a protrusion 31, which is fixedly installed on the outer wall of the protrusion plate seat 21. A crossbar 32 is fixedly installed on the outer wall of the protrusion 31, and a sliding sleeve 33 is slidably connected to the outer wall of the crossbar 32. The user can slide the sliding sleeve 33 on the outer wall of the crossbar 32 to adjust the position of the clamping plate 393, so that the clamping plate 393 can be removed from the top of the rubber ring 24 or reset for easy use.

[0018] As one implementation method in this embodiment, such as Figure 3 As shown, an adjusting bolt 34 is threadedly connected to the outer wall of the sliding sleeve 33. The threaded end of the adjusting bolt 34 is in movable contact with the outer wall of the crossbar 32. In the initial state, the adjusting bolt 34 is in contact with the outer wall of the crossbar 32, locking the position of the clamping plate 393. After the adjusting bolt 34 is loosened, the sliding sleeve 33 can slide on the crossbar 32.

[0019] As one implementation method in this embodiment, such as Figure 3As shown, a sleeve 35 is fixedly installed on the top of the sliding sleeve 33. An insert 37 is movably inserted into the inner cavity of the sleeve 35. A connecting arm 38 is fixedly installed on the outer wall of the insert 37. If the reference plate 39 is damaged as a whole, for example, if the spring 392 fails, the reference plate 39 can be replaced as a whole. The insert 37 is pulled out from the inside of the sleeve 35 and then replaced with the insert 37 as a whole.

[0020] As one implementation method in this embodiment, such as Figure 3 As shown, an assembly bolt 36 is threadedly connected to the outer wall of the sleeve 35. The threaded end of the assembly bolt 36 is in movable contact with the outer wall of the insert 37. Before pulling the insert 37 out of the sleeve 35, loosen the assembly bolt 36 first. After the insert 37 is inserted, tighten the assembly bolt 36.

[0021] As one implementation method in this embodiment, such as Figure 4 As shown, a reference plate 39 is fixedly installed at the end of the connecting arm 38. An I-shaped slide rod 391 is slidably connected to the inner wall of the reference plate 39. A handle 394 is fixedly installed at the end of the I-shaped slide rod 391. The I-shaped slide rod 391 is used to limit the pressure plate 393 to move only vertically relative to the reference plate 39. The design of the handle 394 makes it convenient for the user to pull the pressure plate 393 with the help of the I-shaped slide rod 391.

[0022] As one implementation method in this embodiment, such as Figure 4 As shown, a clamping plate 393 is fixedly installed at the end of the I-shaped slide bar 391 away from the handle 394. A spring 392 is fixedly installed on the outer wall of the clamping plate 393. The end of the spring 392 away from the clamping plate 393 is fixedly installed on the outer wall of the reference plate 39. In the initial state, the clamping plate 393 can be tightly clamped to the top of the rubber ring 24 by the elastic force of the spring 392. After the rubber ring 24 experiences a small amount of wear, the clamping plate 393 can apply pressure to the rubber ring 24 by the elastic force of the spring 392, causing the rubber ring 24 to undergo elastic deformation and automatically compensate for the wear, thereby extending the service life of the rubber ring 24.

[0023] Working principle: During use, the rubber ring 24 is used to seal the connection between the annular seat 22 and the drive shaft 11 to prevent dust leakage. The elastic force of the spring 392 causes the clamping plate 393 to be tightly pressed against the top of the rubber ring 24. After the rubber ring 24 experiences a small amount of wear, the elastic force of the spring 392 can be used to apply pressure to the rubber ring 24 with the help of the clamping plate 393, causing the rubber ring 24 to undergo elastic deformation and automatically compensate for the wear. When replacing the rubber ring 24, loosen the adjusting bolt 34, then pull the clamping plate 393 upward from the handle 394, and then push it away from the drive shaft 11. Then, pry the rubber ring 24 and replace it in the inner cavity of the annular groove 23. Then, pull the handle 394 upward and slide the clamping plate 393 back to its original position, and then tighten the assembly bolt 36.

[0024] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A coal mill base sealing device, characterized in that, include: A coal mill base (1) is provided, and a drive shaft (11) is rotatably connected to the coal mill base (1). Convenient replacement component (2), which is installed on the coal mill base (1), is used to improve the convenience of replacing the seals; A clamping assembly (3) is disposed on a convenient replacement assembly (2) and is used to clamp the seal. The convenient replacement component (2) includes a raised plate seat (21), which is fixedly installed on the outer wall of the coal mill base (1). An annular seat (22) is fixedly installed on the outer wall of the raised plate seat (21). The drive shaft (11) passes through the raised plate seat (21) and the annular seat (22). An annular groove (23) is provided on the annular seat (22). A rubber ring (24) is movably inserted into the inner cavity of the annular groove (23). A knife edge (25) is provided on the rubber ring (24).

2. The coal mill base sealing device according to claim 1, characterized in that: The pressing assembly (3) includes a protrusion (31), which is fixedly installed on the outer wall of the protrusion plate seat (21). A crossbar (32) is fixedly installed on the outer wall of the protrusion (31), and a sliding sleeve (33) is slidably connected to the outer wall of the crossbar (32).

3. A coal mill base sealing device according to claim 2, characterized in that: An adjusting bolt (34) is threadedly connected to the outer wall of the sliding sleeve (33), and the threaded end of the adjusting bolt (34) is in movable contact with the outer wall of the crossbar (32).

4. A coal mill base sealing device according to claim 2, characterized in that: A sleeve (35) is fixedly installed on the top of the sliding sleeve (33), and a plug (37) is movably inserted into the inner cavity of the sleeve (35). A connecting arm (38) is fixedly installed on the outer wall of the plug (37).

5. A coal mill base sealing device according to claim 4, characterized in that: The outer wall of the sleeve (35) is threaded with an assembly bolt (36), and the threaded end of the assembly bolt (36) is in movable contact with the outer wall of the insert (37).

6. A coal mill base sealing device according to claim 4, characterized in that: A reference plate (39) is fixedly installed at the end of the connecting arm (38), and an I-shaped slide rod (391) is slidably connected to the inner wall of the reference plate (39). A handle (394) is fixedly installed at the end of the I-shaped slide rod (391).

7. A coal mill base sealing device according to claim 6, characterized in that: The end of the I-shaped slide bar (391) away from the handle (394) is fixedly installed with a pressure plate (393), and a spring (392) is fixedly installed on the outer wall of the pressure plate (393). The end of the spring (392) away from the pressure plate (393) is fixedly installed on the outer wall of the reference plate (39).

Images