Composite lining plate for mill

Abstract

The utility model belongs to the technical field of mills, and provides a composite lining plate for a mill. The lining plate is of an integrated compression molding structure and comprises a main body and a coating layer which are matched with each other, and the main body comprises a wear-resistant steel plate, a basic framework and a buffer layer; the basic framework, the buffer layer and the wear-resistant steel plate are sequentially overlapped from bottom to top and are mutually fixed; the coating layer is coated and fixed on other surfaces except the upper surface in the main body; wherein the wear-resistant steel plate is of a stepped structure, and the surface, matched with the buffer layer, of the wear-resistant steel plate is a stepped surface. The utility model has the advantages of low installation difficulty, long service life and low energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mill technical field discloses a compound type lining plate for mill. BACKGROUND

[0002] The mill is a commonly used ore grinding equipment in the ore dressing process, which is used for a series of operations such as extrusion, rolling, impact and grinding on the ore, so as to facilitate the subsequent selection process.

[0003] Steel balls and other grinding bodies are placed in the barrel of the mill, and its working principle is: the grinding bodies are used to crush and grind the ore, and then the fine particles or ore powder is obtained and discharged through the discharge port. In order to avoid the barrel of the mill from being worn by the impact of the grinding bodies and adjust the movement state of the grinding bodies, a lining plate is also installed in the mill. Specifically, the lining plate is divided into an ordinary lining plate and a lining plate with ore discharge function. The lining plate with ore discharge function has an automatic ore discharge function, which can improve the ore discharge efficiency.

[0004] However, the inventors found that the current mill lining plate, whether it is an ordinary lining plate or a lining plate with ore discharge function, has the following defects: the current mill lining plate is usually made of steel and is integrally cast, on the one hand, the use of steel makes the mill lining plate have the characteristics of heavy weight, which leads to the defect of high energy efficiency in the application process of the mill; on the other hand, the integrally cast has the disadvantage of poor consistency, which leads to the fact that the current mill lining plate not only has high installation difficulty, but also cannot guarantee its service life. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] A compound type lining plate for mill is an integral mold forming structure, which comprises a main body and a cladding layer matched with each other, the main body comprises a wear-resistant steel plate, a basic framework and a buffer layer;

[0008] The basic framework, the buffer layer and the wear-resistant steel plate are sequentially stacked from bottom to top and fixed with each other, and the cladding layer is fixed on the surfaces of the main body except the upper surface; wherein the wear-resistant steel plate is a stepped structure, and the surface matched with the buffer layer is a stepped surface.

[0009] Further, the wear-resistant steel plate comprises a plurality of sub-steel plates, and the size and material of each sub-steel plate are different; wherein each sub-steel plate is arranged and spliced in size order to form the wear-resistant steel plate.

[0010] Further, the thickness of the wear-resistant steel plate is proportional to the wear rate.

[0011] Further, the wear-resistant steel plate is arrayed with a plurality of first through holes.

[0012] Further, the main body is arrayed with a plurality of second through holes.

[0013] Further, the buffer layer and the cladding layer are rubber layers.

[0014] Further, the rubber layer is an EDPM rubber layer.

[0015] Further, the wear-resistant steel plate is a die forging steel plate.

[0016] Further, the base framework is made of a hot-rolled steel plate.

[0017] Further, a plurality of mounting holes are included, the cross-sectional area of the base framework is greater than the cross-sectional area of the wear-resistant steel plate, and each mounting hole is arranged on the two free sides of the base framework along the width direction of the main body.

[0018] Beneficial effects:

[0019] The technical scheme provides a novel liner plate for a mill, which is a composite structure to simultaneously improve the technical defects of great installation difficulty, uneven service life of the current mill liner plate, and great overall energy consumption when applied to the mill.

[0020] Specifically, the composite liner plate is an integrally molded structure, including a main body and a cladding layer matched with each other, the main body including a wear-resistant steel plate, a base framework, and a buffer layer. The base framework, the buffer layer, and the wear-resistant steel plate are sequentially stacked and fixed with each other from bottom to top, and the cladding layer is fixed on other surfaces of the main body except the upper surface. The wear-resistant steel plate is a stepped structure, and the surface matched with the buffer layer is a stepped surface.

[0021] At this time, since the composite liner plate adopts an integrally molded structure, the structural consistency is improved, the installation difficulty is reduced, and the service life is increased. In the specific structure, compared with the existing mill liner plate using only a wear-resistant steel plate, a sandwich structure sequentially including a base framework, a buffer layer, and a wear-resistant steel plate is adopted, and a cladding layer is cladded. The wear-resistant steel plate is used to realize the wear-resistant protection function; the base framework plays a reinforcing role and provides stability for the installation of the wear-resistant steel plate; and the buffer layer buffers the wear between the two. In addition, the wear-resistant steel plate is arranged in a stepped structure. On the one hand, the self-weight of the entire mill liner plate is reduced, the amount of steel is reduced, and the energy consumption is reduced. In addition, the cladding layer is used to avoid external structure wear, which effectively improves the service life of the entire liner plate.

[0022] It should be appreciated that all combinations of the foregoing concepts and additional concepts described in greater detail below (provided such concepts are not mutually inconsistent) are contemplated as being part of the inventive subject matter. For example, a specific embodiment of a particular concept can be combined with an embodiment of another concept to create another embodiment that falls within the scope of the present inventive subject matter.

[0023] The foregoing and other aspects, embodiments and features of the present inventive teachings can be better understood from the following description of the present inventive teachings when considered in connection with the accompanying drawings. Various additional aspects, embodiments and features of the present inventive teachings are described in more detail below. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings are not intended to be to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures is represented with a like numeral for clarity. Not all components can be called out in each drawing. Embodiments of various aspects of the present inventive teachings will now be described, by way of example only, with reference to the accompanying drawings in which:

[0025] Fig. 1 A sectional view of the composite lining plate for a mill according to the present embodiment;

[0026] Fig. 2 A partial structural view of the composite lining plate according to the present embodiment.

[0027] In the drawings, the reference sign is: 1 is a wear-resistant steel plate, 2 is a buffer layer, 3 is a base framework, 4 is a cladding layer, 5 is a first through hole. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described below in connection with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art in the field of the present application.

[0029] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] Mills are the most common type of grinding equipment in mineral processing plants. They consist of grinding media such as steel balls placed inside the mill cylinder. The grinding media crush and grind the ore into fine particles or powder, achieving the grinding purpose. Liners are installed to prevent wear on the mill cylinder. In particular, there are liners with automatic ore discharge functions to improve discharge efficiency, typically installed in ball mills. However, regardless of the type of liner, they are usually cast from a single piece of steel. Therefore, in application, they suffer from high energy efficiency due to their large weight, poor casting process consistency leading to significant differences in product lifespan, and low casting precision resulting in high installation difficulty. Based on this, this embodiment aims to provide a new composite liner for mills to improve upon the aforementioned technical shortcomings.

[0031] The composite liner for a mill disclosed in this utility model will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0032] Combination Figs. 1-2 As shown, the composite liner in this embodiment is an integrally molded structure, including a main body and a covering layer 4 that cooperate with each other. Specifically, the main body includes a wear-resistant steel plate 1, a basic frame 3, and a buffer layer 2. In terms of structural arrangement, the basic frame 3, the buffer layer 2, and the wear-resistant steel plate 1 are stacked sequentially from bottom to top and fixed to each other, while the covering layer 4 covers and fixes the other surfaces of the main body except for the upper surface (specifically, the upper surface of the wear-resistant steel plate 1 is not covered). Furthermore, the wear-resistant steel plate 1 is designed with a stepped structure, and its surface that cooperates with the buffer layer 2 is a stepped surface. Specifically, in this embodiment, the wear-resistant steel plate 1 is designed with a three-level stepped structure.

[0033] In the specific implementation, firstly, from the overall point of view, since the composite lining plate adopts the one-piece die forming structure, the structural consistency is improved, the installation difficulty is reduced, and the service life is increased. Secondly, from the specific structure, compared with the existing mill lining plate which only adopts the wear-resistant steel plate, the composite lining plate adopts the sandwich structure which sequentially includes the base framework 3, the buffer layer 2 and the wear-resistant steel plate 1, and is coated with the coating layer 4. In the actual application process, the wear-resistant steel plate 1 is used to realize the wear-resistant protection function; the base framework 3 plays a reinforcing role and provides stability for the installation of the wear-resistant steel plate 1; the buffer layer 2 buffers the wear resistance between the two. At the same time, the wear-resistant steel plate 1 is arranged in a stepped structure. On the one hand, the self-weight of the entire mill lining plate is reduced, the steel consumption is reduced, and the technical effect of reducing the energy consumption is achieved. Furthermore, the coating layer is used to avoid external structure wear, which also effectively improves the service life of the entire lining plate.

[0034] In the embodiment, the composite lining plate can be a general lining plate which only realizes the functions of avoiding the barrel wear and adjusting the motion state of the grinding body, or a special lining plate which has the ore discharging function. Specifically, when the composite lining plate is the general lining plate, a plurality of first through holes 5 are arrayed and formed on the wear-resistant steel plate 1. At this time, from the perspective of the entire composite lining plate, the blind holes are formed thereon, so that it only has the functions of protecting the barrel wear and adjusting the motion state of the grinding body. When the composite lining plate is the special lining plate, a plurality of second through holes are arrayed and formed on the main body. At this time, from the perspective of the entire composite lining plate, the through holes are formed thereon, so that it not only has the functions of protecting the barrel wear and adjusting the motion state of the grinding body, but also realizes the ore discharging function to improve the ore discharging efficiency.

[0035] In the embodiment, the buffer layer 2 and the coating layer 4 are both rubber layers. In the specific die forming process, the corresponding mold can be designed, the base framework 3 and the wear-resistant steel plate are sequentially and intermittently arranged in the mold, then the rubber filling material is filled into the mold and solidified to separate, and the composite lining plate can be obtained. In the specific implementation, the corresponding rubber material of the rubber layer is cured by chemical action to improve the overall use performance of the rubber. Preferably, the rubber layer in the embodiment is an EDPM rubber layer. Since the EDPM rubber has the advantages of wear resistance and acid and alkali resistance, when it is applied to the buffer layer and the coating layer, the overall service life of the composite lining plate can be further improved.

[0036] In the embodiment, the wear-resistant steel plate 1 is a die forging steel plate. The steel plate process corresponding to the die forging steel plate has the characteristics of high consistency, and can further avoid the defects that the installation difficulty is large and the service life is difficult to improve due to the structural defects of local components. At the same time, the die forging steel plate also has the characteristics of high wear resistance and high hardness, which can further improve the overall service life of the composite lining plate.

[0037] In the embodiment, the base frame 3 is made of hot-rolled steel plate, so as to provide sufficient structural strength and installation strength for the composite lining plate, thereby improving the overall service life of the composite lining plate.

[0038] As a preferred embodiment, the thickness of the wear-resistant steel plate 1 can be adjusted in the embodiment. Specifically, the thickness of the wear-resistant steel plate 1 can be customized according to different wear rates of different mills. At this time, the thickness adjustment of the wear-resistant steel plate 1 in the customization process can be supplemented due to the existence of the buffer layer 2, so as to avoid affecting the overall thickness of the composite lining plate and causing unsuccessful installation. Further, the thickness of the wear-resistant steel plate is set to be proportional to the wear rate. At this time, the higher the wear rate is, the thicker the thickness of the wear-resistant steel plate 1 is, so as to avoid frequent replacement of the lining plate when the wear is fast, and avoid wasting of consumables when the wear is slow.

[0039] As another preferred embodiment, the wear-resistant steel plate 1 in the embodiment includes a plurality of sub-steel plates. Specifically, the size and material of each sub-steel plate are different. In the specific structural arrangement, each sub-steel plate is arranged and combined in size order to form the wear-resistant steel plate 1. At this time, since the material of the sub-steel plate at different positions is correspondingly set, the wear resistance of the wear-resistant steel plate 1 can be further improved, so as to further improve the service life of the composite lining plate.

[0040] In order to facilitate the installation of the composite lining plate, a plurality of mounting holes are included. Specifically, the cross-sectional area of the base frame 3 is larger than the cross-sectional area of the wear-resistant steel plate 1 in the embodiment. At this time, along the width direction of the main body, each mounting hole is arranged on the two spare sides of the base frame 3.

[0041] Although the present application has been disclosed with reference to the preferred embodiments above, it is not intended to limit the present application. Those skilled in the art can make various modifications and improvements without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A composite liner for a mill, characterized in that, It is an integrally molded structure, including a main body and a covering layer that cooperate with each other. The main body includes a wear-resistant steel plate, a basic frame, and a buffer layer. The basic frame, the buffer layer, and the wear-resistant steel plate are stacked sequentially from bottom to top and fixed to each other. The covering layer covers and is fixed to the other surfaces of the main body except for the upper surface. The wear-resistant steel plate has a stepped structure, and the surface that mates with the buffer layer is a stepped surface.

2. The composite liner for a mill according to claim 1, characterized in that, The wear-resistant steel plate comprises several sub-steel plates, each with different dimensions and materials; wherein, the sub-steel plates are arranged and assembled in order of size to form the wear-resistant steel plate.

3. The composite liner for a mill according to claim 1, characterized in that, The thickness of the wear-resistant steel plate is proportional to the wear rate.

4. The composite liner for a mill according to claim 1, characterized in that, The wear-resistant steel plate has several first through holes arranged in an array.

5. The composite liner for a mill according to claim 1, characterized in that, The main body has several second through holes arranged in an array.

6. The composite liner for a mill according to claim 1, characterized in that, Both the buffer layer and the covering layer are rubber layers.

7. The composite liner for a mill according to claim 6, characterized in that, The rubber layer is an EDPM rubber layer.

8. The composite liner for a mill according to claim 1, characterized in that, The wear-resistant steel plate is a forged steel plate.

9. The composite liner for a mill according to claim 1, characterized in that, The basic frame is made of hot-rolled steel plate.

10. The composite liner for a mill according to claim 1, characterized in that, It includes several mounting holes. The cross-sectional area of ​​the base frame is larger than the cross-sectional area of ​​the wear-resistant steel plate. Along the width direction of the main body, each mounting hole is opened on the two empty sides of the base frame.

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