Coal mill pull rod lower sealing assembly and coal mill pull rod sealing kit

Abstract

The utility model provides a coal mill pull rod lower sealing assembly and a coal mill pull rod sealing kit, and relates to the technical field of coal mill pull rod sealing, the coal mill pull rod lower sealing assembly comprises a pull rod body, the surface of the pull rod body is sleeved with a first arc cover and a second arc cover, and first arc grooves are formed in the positions, close to the centers, of the inner walls of the first arc cover and the second arc cover; second arc grooves are formed in the positions, close to the tops and the bottoms, of the inner walls of the first arc cover and the second arc cover, and the surface of the pull rod body and the tops and the bottoms of the first arc cover and the second arc cover are sleeved with and slidably connected with first U-shaped sealing ring gaskets. According to the utility model, the mounting cover can conveniently rotate on the surfaces of the first arc cover and the second arc cover through the bumps, and the inner wall of the mounting cover is in threaded connection with the outer walls of the first arc cover and the second arc cover, so that the effect of conveniently detaching the mounting cover from the surfaces of the first arc cover and the second arc cover can be achieved; therefore, the effect of conveniently maintaining and replacing the sealing assembly can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mill tie rod seals, in particular to a coal mill tie rod lower seal component and a coal mill tie rod seal kit. Background Art

[0002] Coal mills are key equipment for pulverizing coal in thermal power plants. Their performance and sealing directly impact both pulverization efficiency and environmental protection. The mill's tie rod lower seal assembly and seal kit play a vital role in equipment operation, primarily preventing the leakage of pulverized coal, dust, and other impurities while ensuring the proper functioning of the cone and roller sections.

[0003] Existing, such as Chinese Patent Publication No. CN208204007U, this utility model provides a coal mill tie rod lower seal assembly and a coal mill tie rod seal kit, belonging to the field of coal mill seals. The coal mill tie rod lower seal assembly includes: a lower seal seat, a first sealing ring that seals between the lower seal seat and the tie rod; a floating ring that fits around the outer circumference of the tie rod; and an outer ring connected to the first sealing ring and used to limit radial movement of the floating ring relative to the first sealing ring along the tie rod. In this utility model, when the tie rod moves radially, the tie rod pushes the outer ring through the floating ring, which in turn drives the first sealing ring through the outer ring. This prevents the tie rod from directly squeezing the inner wall of the first sealing ring, reduces wear on the inner wall of the first sealing ring, and improves sealing performance. The coal mill tie rod seal kit includes the above-mentioned coal mill tie rod lower seal assembly. By utilizing the above-mentioned coal mill tie rod lower seal assembly, this utility model reduces wear on the coal mill tie rod lower seal assembly.

[0004] Although the coal mill tie rod sealing kit in the above patent technology reduces the wear of the coal mill tie rod lower sealing assembly by adopting the above coal mill tie rod lower sealing assembly, when the tie rod sealing gasket is damaged or needs to be replaced, it is usually inconvenient to repair or replace the sealing assembly. At the same time, during the pulling process, the sealing gasket will inevitably become loose. Therefore, a coal mill tie rod lower sealing assembly and a coal mill tie rod sealing kit are needed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that when the tie rod seal is damaged or needs to be replaced, it is usually inconvenient to repair or replace the sealing assembly, and to propose a coal mill tie rod lower sealing assembly and a coal mill tie rod sealing kit.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a coal mill pull rod lower sealing assembly and a coal mill pull rod sealing kit, including a pull rod body, the surface of the pull rod body is sleeved with a first arc cover and a second arc cover, the inner walls of the first arc cover and the second arc cover are provided with a first arc groove near the center, the inner walls of the first arc cover and the second arc cover are provided with a second arc groove near the top and the bottom, the surface of the pull rod body and the top and bottom of the first arc cover and the second arc cover are sleeved and slidably connected with a first U-shaped sealing ring gasket, the surface of the pull rod body and the top and bottom of the first arc groove are sleeved and slidably connected with a second U Type sealing ring gasket, the surface of the pull rod body and the interior of the second arc groove are sleeved and fixedly connected with the first lifting plate, the surface of the pull rod body and the upper and lower parts of the first lifting plate are sleeved and slidably connected with the first sealing plate, a first spring is fixedly connected between the first lifting plate and the first sealing plate, the surface of the pull rod body and the interior of the first arc groove are sleeved and fixedly connected with the second lifting plate, second sealing plates are provided above and below the second lifting plate, a second spring is fixedly connected between the second lifting plate and the second sealing plate, the top and bottom ends of the first arc cover and the second arc cover are sleeved and threadedly connected with mounting covers.

[0007] Preferably, the first U-shaped sealing ring gasket and the second U-shaped sealing ring gasket are in contact with the first arc cover and the second arc cover.

[0008] Preferably, the first sealing disc and the second sealing disc are respectively adapted to the first U-shaped sealing ring gasket and the second U-shaped sealing ring gasket.

[0009] Preferably, bumps are fixedly connected to the surface of the mounting cover at equal intervals near one end.

[0010] Preferably, four limiting rods are uniformly spaced and penetrate the surface of the second lifting plate and are slidably connected thereto, and both ends of the limiting rods are in contact with the inner walls of the top and bottom of the first arc groove and the second arc groove respectively.

[0011] Preferably, a sealing gasket is provided between the first arc cover and the second arc cover.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. In the present invention, the mounting cover can be easily rotated on the surfaces of the first arc cover and the second arc cover by means of the protrusion. Since the inner wall of the mounting cover is threadedly connected to the outer wall of the first arc cover and the second arc cover, the mounting cover can be easily disassembled from the surfaces of the first arc cover and the second arc cover, thereby facilitating the maintenance and replacement of the sealing assembly.

[0014] 2. In the utility model, when the pull rod body moves radially, the body card is pulled to drive the lifting plate to rise and fall. During the lifting process of the lifting plate, the sealing plate can be pushed by the spring, which can make the sealing plate squeeze the U-shaped sealing ring gasket, thereby achieving the effect of improving the sealing between the U-shaped sealing ring gasket, the sealing plate and the pull rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a three-dimensional diagram of the overall structure of a coal mill pull rod lower seal assembly and a coal mill pull rod seal kit;

[0016] Figure 2 The utility model provides a partial structural perspective diagram of a coal mill pull rod lower seal assembly and a coal mill pull rod seal kit;

[0017] Figure 3 The utility model provides a cross-sectional view of the overall structure of a coal mill pull rod lower seal assembly and a coal mill pull rod seal kit;

[0018] Figure 4 The utility model proposes a coal mill pull rod lower seal assembly and a coal mill pull rod seal kit Figure 3 A magnified view of the structure of area A in the middle.

[0019] Legend: 1. Pull rod body; 2. First arc cover; 3. Second arc cover; 4. First arc groove; 5. Second arc groove; 6. First U-shaped sealing ring gasket; 7. Second U-shaped sealing ring gasket; 8. First lifting plate; 9. First sealing plate; 10. First spring; 11. Second lifting plate; 12. Second sealing plate; 13. Second spring; 14. Limit rod; 15. Mounting cover; 16. Bump; 17. Sealing gasket. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1, as Figure 1-4As shown, the utility model provides a coal mill pull rod lower sealing assembly and a coal mill pull rod sealing kit, including a pull rod body 1, a first arc cover 2 and a second arc cover 3 are sleeved on the surface of the pull rod body 1, which can cover the pull rod body 1, a first arc groove 4 is opened through the inner wall of the first arc cover 2 and the second arc cover 3 and near the center, a second arc groove 5 is opened on the inner wall of the first arc cover 2 and the second arc cover 3 and near the top and bottom, a first U-shaped sealing ring gasket 6 is sleeved and slidably connected to the surface of the pull rod body 1 and the top and bottom of the first arc cover 2 and the second arc cover 3, a second U-shaped sealing ring gasket 7 is sleeved and slidably connected to the surface of the pull rod body 1 and located at the top and bottom of the first arc groove 4, a first lifting plate 8 is sleeved and fixedly connected to the surface of the pull rod body 1 and located inside the second arc groove 5, and a second lifting plate 8 is sleeved and slidably connected to the surface of the pull rod body 1 and located above and below the first lifting plate 8 A sealing disk 9, a first spring 10 is fixedly connected between the first lifting disk 8 and the first sealing disk 9, a second lifting disk 11 is sleeved and fixedly connected on the surface of the pull rod body 1 and located inside the first arc groove 4, a second sealing disk 12 is provided above and below the second lifting disk 11, a second spring 13 is fixedly connected between the second lifting disk 11 and the second sealing disk 12, which can enable the pull rod body 1 to drive the first lifting disk 8 and the second lifting disk 11 to rise and fall during the pulling process, the first lifting disk 8 and the second lifting disk 11 can respectively push the upper or lower first sealing disk 9 or the second sealing disk 12 through the first spring 10 and the second spring 13 to squeeze the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7, and the top and bottom ends of the first arc cover 2 and the second arc cover 3 are sleeved and threaded with a mounting cover 15, which can play the effect of installing and disassembling the sealing component in the pull rod body 1.

[0023] Example 2, as Figure 1-4 As shown, by the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7 being in contact with the first arc cover 2 and the second arc cover 3, the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7 can be sealed to the first arc cover 2 and the second arc cover 3; by the first sealing disk 9 and the second sealing disk 12 being adapted to the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7 respectively, the first sealing disk 9 and the second sealing disk 12 can be closely contacted to the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7 respectively; by The surface of the mounting cover 15 is fixedly connected with protrusions 16 at equal intervals near one end, which can facilitate the rotation of the mounting cover 15; four limit rods 14 are equidistantly passed through and slidably connected to the surface of the second lifting plate 11, and both ends of the limit rods 14 are respectively affixed to the top and bottom inner walls of the first arc groove 4 and the second arc groove 5, which can limit the second lifting plate 11; a sealing gasket 17 is provided between the first arc cover 2 and the second arc cover 3, which can achieve the effect of sealing between the first arc cover 2 and the second arc cover 3.

[0024] Working principle: When the pull rod body 1 moves in the radial direction, the pull rod body 1 can drive the first lifting plate 8 and the second lifting plate 11 to rise and fall. During the lifting process of the first lifting plate 8 and the second lifting plate 11, the first spring 10 and the second spring 13 can push the first sealing plate 9 and the second sealing plate 12, so that the first sealing plate 9 and the second sealing plate 12 can squeeze the first U-shaped sealing ring gasket 6 and the second U-shaped sealing ring gasket 7, thereby improving the sealing performance between the U-shaped sealing ring gasket, the sealing plate and the pull rod body 1. The mounting cover 15 can be easily rotated on the surface of the first arc cover 2 and the second arc cover 3 through the protrusion 16. Since the inner wall of the mounting cover 15 is threadedly connected to the outer wall of the first arc cover 2 and the second arc cover 3, it can be convenient to remove the mounting cover 15 from the surface of the first arc cover 2 and the second arc cover 3, thereby facilitating the maintenance and replacement of the sealing assembly.

[0025] The wiring diagram of the pull rod body 1 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the pull rod body 1 are not explained in detail.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A coal mill tie rod lower seal assembly and a coal mill tie rod seal kit, comprising a tie rod body (1), characterized in that: The surface of the pull rod body (1) is sleeved with a first arc cover (2) and a second arc cover (3), the inner walls of the first arc cover (2) and the second arc cover (3) are provided with a first arc groove (4) near the center, the inner walls of the first arc cover (2) and the second arc cover (3) are provided with a second arc groove (5) near the top and the bottom, the surface of the pull rod body (1) and the top and the bottom of the first arc cover (2) and the second arc cover (3) are sleeved with a first U-shaped sealing ring gasket (6) and are slidably connected, the surface of the pull rod body (1) and the top and the bottom of the first arc groove (4) are sleeved with a second U-shaped sealing ring gasket (7) and are slidably connected, the surface of the pull rod body (1) and the inside of the second arc groove (5) are sleeved with and fixedly connected A first lifting plate (8) is connected, a first sealing plate (9) is sleeved and slidably connected on the surface of the pull rod body (1) and located above and below the first lifting plate (8), a first spring (10) is fixedly connected between the first lifting plate (8) and the first sealing plate (9), a second lifting plate (11) is sleeved and fixedly connected on the surface of the pull rod body (1) and located inside the first arc groove (4), a second sealing plate (12) is provided above and below the second lifting plate (11), a second spring (13) is fixedly connected between the second lifting plate (11) and the second sealing plate (12), the top and bottom ends of the first arc cover (2) and the second arc cover (3) are sleeved and threadedly connected with a mounting cover (15).

2. The coal mill tie rod lower seal assembly and coal mill tie rod seal kit according to claim 1, characterized in that: The first U-shaped sealing ring gasket (6) and the second U-shaped sealing ring gasket (7) are in contact with the first arc cover (2) and the second arc cover (3).

3. The coal mill tie rod lower seal assembly and coal mill tie rod seal kit according to claim 1, characterized in that: The first sealing disc (9) and the second sealing disc (12) are respectively adapted to the first U-shaped sealing ring gasket (6) and the second U-shaped sealing ring gasket (7).

4. The coal mill tie rod lower seal assembly and coal mill tie rod seal kit according to claim 1, characterized in that: The surface of the mounting cover (15) is fixedly connected with protrusions (16) at equal intervals near one end.

5. The coal mill tie rod lower seal assembly and coal mill tie rod seal kit according to claim 1, characterized in that: Four limiting rods (14) are equidistantly spaced and slidably connected to the surface of the second lifting plate (11), and both ends of the limiting rods (14) are in contact with the top and bottom inner walls of the first arc groove (4) and the second arc groove (5), respectively.

6. The coal mill tie rod lower seal assembly and coal mill tie rod seal kit according to claim 1, characterized in that: A sealing gasket (17) is provided between the first arc cover (2) and the second arc cover (3).

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