A wear resistant medium speed mill liner arrangement

Abstract

The utility model discloses a kind of wear-resistant medium-speed coal mill lining plate devices, it is related to coal milling equipment technical field, main purpose is to provide a kind of wear-resistant medium-speed coal mill lining plate device that can improve the connecting strength and wear resistance of lining plate.The main technical scheme of the utility model is as follows: a kind of wear-resistant medium-speed coal mill lining plate device, comprising: base material component, base material component includes support plate and side plate, side plate is fixedly connected to one side of support plate, support plate and side plate have multiple first through holes;Lining plate component, lining plate component includes bottom plate and vertical plate, vertical plate is fixedly connected to bottom plate, bottom plate is attached to one side of support plate, vertical plate is attached to one side of side plate, bottom plate and vertical plate have multiple second through holes;Connecting piece, connecting piece is multiple, multiple connecting pieces pass through second through hole and first through hole in turn.The utility model is mainly used for coal milling.

Description

Technical Field

[0001] This utility model relates to the field of coal grinding equipment technology, and in particular to a wear-resistant medium-speed coal mill liner device. Background Technology

[0002] The grinding roller head liner is a key component related to the grinding roller in a coal mill. Installed at the end of the grinding roller, typically surrounding the grinding roller head, it is one of the components that directly contacts the material and participates in the grinding process. Tightly connected to the grinding roller head housing by bolts or other fixing methods, it rotates with the grinding roller and plays a role in protecting, grinding, and guiding the material during coal mill operation.

[0003] The existing grinding roller head liner assembly is a split-type assembly. Because the base material is manganese steel and the wear-resistant liner is made of ordinary cast iron, and the two cannot be welded, the two are connected by a welded plug. Because the welded plug connection is not strong, it cracks or breaks under external impact or collision. It often falls off during the operation of the coal mill, causing the coal mill to malfunction and stop, affecting production. In addition, ordinary cast liners have poor wear resistance and short service life. Frequent replacement leads to a large amount of maintenance work and increases maintenance costs. At the same time, when one split liner falls off, the remaining liners are accelerated to fall off by the particles carried by the wind, which brings safety hazards to the operation of the coal mill, reduces the output of the coal mill, and cannot guarantee long-term stable operation. Utility Model Content

[0004] In view of this, the present invention provides a wear-resistant medium-speed coal mill liner device, the main purpose of which is to provide a wear-resistant medium-speed coal mill liner device that can improve the connection strength and wear resistance of the liner.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] This utility model embodiment provides a wear-resistant medium-speed coal mill liner device, the device comprising:

[0007] The base material component includes a support plate and a side plate, the side plate being fixedly connected to one side of the support plate, and the support plate and the side plate having a plurality of first through holes;

[0008] A liner component, comprising a base plate and a vertical plate, wherein the vertical plate is fixedly connected to the base plate, the base plate is attached to one side of the support plate, and the vertical plate is attached to one side of the side plate; the base plate and the vertical plate have a plurality of second through holes.

[0009] A connector, wherein there are multiple connectors, and the multiple connectors pass through the second through hole and the first through hole in sequence.

[0010] Furthermore, the side plate and the upright plate are arc plates, and the side plate and the upright plate have the same curvature.

[0011] Furthermore, the base plate has a first arcuate groove, and the side plate passes through the first arcuate groove.

[0012] Furthermore, the connector is a tapered pin.

[0013] Furthermore, the first through hole and the second through hole form a connecting tapered hole, the connector passes through the connecting tapered hole, and the side of the connector is attached to the inner side of the connecting tapered hole.

[0014] Furthermore, the second through hole on the upright plate is an upright plate hole, and the connector installed on the upright plate hole is an upright plate pin. One end of the upright plate pin has a first arc surface, and the curvature of the first arc surface is the same as the curvature of the upright plate.

[0015] Furthermore, the second through hole located on the base plate is a base plate hole, and the connector installed on the base plate hole is a base plate pin, one end of which has a first flat surface.

[0016] Furthermore, the liner component is made of a high-chromium alloy.

[0017] This utility model provides a wear-resistant medium-speed coal mill liner device. The base material component supports and connects the liner component, including a support plate and a side plate. The side plate is fixedly connected to one side of the support plate, and both the support plate and the side plate have multiple first through holes. The liner component protects the grinding roller head. It includes a base plate and a vertical plate, with the vertical plate fixedly connected to the base plate. The base plate is attached to one side of the support plate, and the vertical plate is attached to one side of the side plate. Both the base plate and the vertical plate have multiple second through holes. Multiple connectors connect the base material component and the liner component, passing sequentially through the second and first through holes. Compared to existing technologies, current grinding roller head liner devices are assembled in separate parts. Because the base material is manganese steel and the wear-resistant liner is made of ordinary cast iron, and the two cannot be welded, they are joined using a plug-type connection. Because this plug-type connection is not strong, it is prone to cracking or breakage under external impact or collision. Damage to the liner plates is a common problem. During coal mill operation, liner plates frequently detach, causing malfunctions and shutdowns, impacting production. Furthermore, ordinary cast liners have poor wear resistance, short service life, and frequent replacements lead to heavy maintenance workload and increased costs. Additionally, when one liner plate detaches, the wind-driven particles exacerbate the detachment of other liner sections, posing a safety hazard to the coal mill and reducing its output, making long-term stable operation impossible. This technical solution addresses this by placing a base plate over the support plate and attaching the vertical plate to the outside of the side plate. Connectors are then passed through the second and first through holes and welded to the support and side plates, fixing the positions of the base plate, support plate, vertical plate, and side plate relatively. This not only improves the connection and stability between the base material and the liner components but also extends the service life of the liner components and prevents liner detachment from causing safety hazards, thereby enhancing the safety of the coal mill. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of a wear-resistant medium-speed coal mill liner device provided for an embodiment of this utility model;

[0019] Figure 2 A three-dimensional structural schematic diagram of a liner component provided for an embodiment of this utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the cross section at point AA;

[0021] Figure 4 A top view of a liner component provided in an embodiment of this utility model;

[0022] Figure 5A three-dimensional structural schematic diagram of another liner component provided in an embodiment of this utility model;

[0023] Figure 6 A schematic diagram of the structure of a base material component provided in an embodiment of this utility model;

[0024] Figure 7 This is a structural schematic diagram of a connector provided in an embodiment of the present utility model. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 7 As shown, this utility model embodiment provides a wear-resistant medium-speed coal mill liner device, which includes:

[0027] The base material component includes a support plate 11 and a side plate 12, the side plate 12 being fixedly connected to one side of the support plate 11, and the support plate 11 and the side plate 12 having a plurality of first through holes 13;

[0028] The liner component includes a base plate 21 and a vertical plate 22. The vertical plate 22 is fixedly connected to the base plate 21. The base plate 21 is attached to one side of the support plate 11, and the vertical plate 22 is attached to one side of the side plate 12. The base plate 21 and the vertical plate 22 have a plurality of second through holes.

[0029] Connector 3, there are multiple connectors 3, and the multiple connectors 3 pass through the second through hole and the first through hole 13 in sequence.

[0030] This utility model provides a wear-resistant medium-speed coal mill liner device. The base material component supports and connects the liner component. The base material component includes a support plate 11 and a side plate 12. The side plate 12 is fixedly connected to one side of the support plate 11. The support plate 11 and the side plate 12 have multiple first through holes 13. The liner component protects the grinding roller head. The liner component includes a base plate 21 and a vertical plate 22. The vertical plate 22 is fixedly connected to the base plate 21. The base plate 21 is fitted against one side of the support plate 11. 22 is attached to one side of the side plate 12. The bottom plate 21 and the upright plate 22 have multiple second through holes 23. The function of the connector 3 is to connect the base material component and the liner component. There are multiple connectors 3, and the multiple connectors 3 pass through the second through holes 23 and the first through holes 13 in sequence. Compared with the prior art, the existing grinding roller head liner device is assembled in a split manner. Because the base material is manganese steel and the wear-resistant liner material is ordinary cast iron, and the two cannot be welded, the two are connected by a plug-type connection. Because the plug-type connection is not firm, it is susceptible to damage from external impacts or... Impact-induced cracks or breakage often lead to detachment during coal mill operation, causing mill malfunctions and shutdowns, impacting production. Furthermore, ordinary cast liners have poor wear resistance, short service life, and frequent replacements result in heavy maintenance workload and increased costs. Additionally, in split-type liners, if one detaches, the remaining sections are further dislodged by particles carried by the wind, posing safety hazards to the coal mill and reducing its output, making long-term stable operation impossible. In this technical solution, the base plate 21 is placed over the support plate 11, and the vertical plate 2... 2 is attached to the outside of the side plate 12, and then the connector 3 passes through the second through hole 23 and the first through hole 13 in sequence. Then the connector 3 is welded to the support plate 11 and the side plate 12 by welding, so that the positions of the bottom plate 21 and the support plate 11 are relatively fixed, and the positions of the vertical plate 22 and the side plate 12 are relatively fixed. This not only improves the connection and fixation between the base material component and the liner component, but also improves the service life of the liner component. At the same time, it can also prevent the liner component from falling off and causing safety hazards, thereby achieving the technical effect of improving the safety of the coal mill.

[0031] The aforementioned base material component serves to support and connect the liner component. The base material component includes a support plate 11 and a side plate 12. The side plate 12 is fixedly connected to one side of the support plate 11. The support plate 11 and the side plate 12 have multiple first through holes 13. The base material component is typically made of manganese steel. The base material component consists of a support plate 11 and a side plate 12. The support plate 11 is a flat plate, and the side plate 12 is an arc-shaped plate. The side plate 12 is fixedly connected to the upper part of the support plate 11. The support plate 11 has a second arc-shaped groove to provide space for the installation of the grinding roller head. The liner component serves to protect the grinding roller head. The liner component is made of high-chromium alloy material. High-chromium alloy material is a high-quality wear-resistant material, whose main components are chromium, nickel, vanadium, and other metallic elements. It has high hardness, high wear resistance, and good corrosion resistance. Furthermore, high-chromium alloy... The cast iron wear-resistant plate also has good high temperature resistance and is suitable for working environments with high temperature, high hardness and high strength. The liner component includes a base plate 21 and a vertical plate 22. The vertical plate 22 is fixedly connected to the base plate 21. The base plate 21 is attached to one side of the support plate 11. The vertical plate 22 is attached to one side of the side plate 12. The base plate 21 and the vertical plate 22 have multiple second through holes 23. The base plate 21 is a flat plate and the vertical plate 22 is an arc plate. Furthermore, the side plate 12 and the vertical plate 22 have the same curvature, so that the inner side of the vertical plate 22 can be completely attached to the outer side of the side plate 12. The base plate 21 has a first arc groove. The side plate 12 passes through the first arc groove and is attached to the vertical plate 22. Multiple first through holes 13 are evenly distributed on the base material component and multiple second through holes 23 are evenly distributed on the liner component.The function of connector 3 is to connect the base material component and the liner component. Multiple connectors 3 pass sequentially through the second through hole 23 and the first through hole 13. Each connector 3 is a tapered pin. Specifically, the first through hole 13 and the second through hole 23 form a connecting tapered hole. The connector 3 passes through this connecting tapered hole, and the side of the connector 3 is fitted against the inner side of the connecting tapered hole, thereby reducing the gap between the connector 3 and the base material component or the liner component. In this technical solution, the base plate 21 covers the upper part of the support plate 11, the upright plate 22 is attached to the outside of the side plate 12, and then the connectors 3 pass sequentially through the second through hole 23 and the first through hole 13. Finally, the connectors 3 are welded to the support plate. On the support plate 11 and side plate 12, the positions of the base plate 21 and support plate 11 are relatively fixed, and the positions of the vertical plate 22 and side plate 12 are relatively fixed. This not only improves the connection and fixation between the base material components and the liner components, but also extends the service life of the liner components. Simultaneously, it prevents the liner components from falling off and causing safety hazards, thereby achieving the technical effect of improving the safety of the coal mill. Optionally, a sealing gasket layer is added. The sealing gasket layer is placed in the gap between the side plate 12 and the vertical plate 22, and also in the gap between the base plate 21 and support plate 11. The sealing gasket layer uses a high-temperature resistant and wear-resistant sealant, which can prevent material particles from entering the gap, thereby achieving the technical effect of improving the sealing performance between the base material components and the liner components.

[0032] Furthermore, the second through hole 23 located on the upright plate 22 is an upright plate hole 232, and the connector 3 installed on the upright plate hole 232 is an upright plate pin. One end of the upright plate pin has a first arc surface, and the curvature of the first arc surface is the same as the curvature of the upright plate 22. In this embodiment, a second through hole 23 is further defined, and a vertical plate hole 232 is provided on the vertical plate 22. The vertical plate hole 232 cooperates with and is connected to the vertical plate pin. One end of the vertical plate pin is close to the bottom plate 21, and one end of the vertical plate pin is located on the convex surface of the vertical plate 22. In order to ensure that the convex surface of the vertical plate 22 is an arc surface without protrusions, a first arc surface 31 is provided at one end of the vertical plate pin. The first arc surface is formed by cutting and grinding, so that the first arc surface 31 and the arc surface of the vertical plate 22 are the same arc surface, thereby effectively solving the problem of the combination of two different materials. At the same time, it improves the reliability of the connection between the liner component and the base material component and improves the connection strength. Optionally, a first washer is added. The first washer is provided on the outer periphery of the connector 3, which can prevent the connector 3 from loosening and improve the connection between the vertical plate 22 and the connector 3.

[0033] Furthermore, the second through hole 23 located on the base plate 21 is a base plate hole 231, and the connector 3 installed on the base plate hole 231 is a base plate pin, one end of which has a first flat surface. In this embodiment, the second through hole 23 is further defined, and the base plate 21 is a flat plate. Therefore, the end face of the base plate pin installed on the base plate 21 is the first flat surface, and the first flat surface is on the same plane as the surface of the base plate 21, thereby achieving the technical effect of improving the reliability and connection strength of the connection between the liner component and the base material component. Optionally, a second washer is added. The second washer is disposed on the outer periphery of the connector 3, which can prevent the connector 3 from loosening and improve the connection between the base plate 21 and the connector 3.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A wear-resistant medium-speed coal mill liner device, characterized in that, include: The base material component includes a support plate and a side plate, the side plate being fixedly connected to one side of the support plate, and the support plate and the side plate having a plurality of first through holes; A liner component, comprising a base plate and a vertical plate, wherein the vertical plate is fixedly connected to the base plate, the base plate is attached to one side of the support plate, and the vertical plate is attached to one side of the side plate; the base plate and the vertical plate have a plurality of second through holes. A connector, wherein there are multiple connectors, and the multiple connectors pass through the second through hole and the first through hole in sequence.

2. The wear-resistant medium-speed coal mill liner device according to claim 1, characterized in that, The side plate and the upright plate are arc plates, and the side plate and the upright plate have the same curvature.

3. The wear-resistant medium-speed coal mill liner device according to claim 2, characterized in that, The base plate has a first arcuate groove, and the side plate passes through the first arcuate groove.

4. The wear-resistant medium-speed coal mill liner device according to claim 2, characterized in that, The connector is a tapered pin.

5. The wear-resistant medium-speed coal mill liner device according to claim 4, characterized in that, The first through hole and the second through hole form a connecting tapered hole, the connector passes through the connecting tapered hole, and the side of the connector is attached to the inner side of the connecting tapered hole.

6. The wear-resistant medium-speed coal mill liner device according to claim 5, characterized in that, The second through hole on the upright plate is an upright plate hole, and the connector installed on the upright plate hole is an upright plate pin. One end of the upright plate pin has a first arc surface, and the curvature of the first arc surface is the same as the curvature of the upright plate.

7. The wear-resistant medium-speed coal mill liner device according to claim 5, characterized in that, The second through hole on the base plate is a base plate hole, and the connector installed on the base plate hole is a base plate pin, one end of which has a first flat surface.

8. A wear-resistant medium-speed coal mill liner device according to any one of claims 1 to 7, characterized in that, The liner component is made of high-chromium alloy.

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