A kind of outer ring lining plate suitable for semi-autogenous mill
By combining a rubber base plate with a wear-resistant steel plate and lifting strips, the problem of severe wear on the outer ring liner of the semi-autogenous grinding mill was solved, resulting in improved wear resistance and increased production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI NAIPU MINING MASCH CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-04
AI Technical Summary
Existing metal liners suffer severe wear during semi-autogenous grinding mill ore beneficiation, leading to frequent replacements, reduced production efficiency, and the risk of slurry leakage.
The base plate and lifting strip structure made of rubber are combined with a wear-resistant steel plate design to form an outer ring liner made of steel-rubber composite material, which improves wear resistance and adopts a split structure for easy replacement.
It improves the wear resistance of the outer ring liner, reduces the frequency of maintenance, reduces the difficulty and time of replacement, and improves production efficiency.
Smart Images
Figure CN224586011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semi-autogenous grinding mill technology, specifically to an outer ring liner plate suitable for semi-autogenous grinding mills. Background Technology
[0002] A semi-autogenous grinding mill is a mineral processing and crushing equipment that uses ore as the main medium and grinding media such as steel balls as auxiliary media. It has the advantages of high grinding efficiency and low cost, and has important applications in large-scale mining scenarios.
[0003] The outer ring liner is one of the key components of a semi-autogenous mill. It is arranged concentrically with the inner ring liner and located within the mill cylinder. The outer ring liner is fixed to the inner wall of the cylinder and is also fixed to the outer circumferential wall of the inner ring liner via its inner circumferential wall. On one hand, it serves to lift the ore material and grinding media; on the other hand, it also acts as a buffer to protect the cylinder from the impact of the ore material and grinding media.
[0004] In existing technologies, the outer ring liners of semi-autogenous grinding mills are mostly one-piece alloy or high-manganese steel metal liners. However, during the mineral processing of semi-autogenous grinding mills, the outer ring liners, especially in the main wear areas, gradually thin under the friction and impact of the ore material and the grinding media, thus losing or even failing their lifting and buffering protection functions. Therefore, frequent shutdowns are required to replace the outer ring liners, thereby reducing production efficiency. Utility Model Content
[0005] The purpose of this utility model is to provide an outer ring liner plate suitable for semi-autogenous grinding mills, so as to solve the technical problem of low production efficiency caused by the difficulty in solving the wear problem of existing metal liners when applied to semi-autogenous grinding mills for mineral processing and crushing.
[0006] To achieve the above objectives, the present invention proposes the following technical solution:
[0007] This technical solution provides an outer ring liner plate suitable for a semi-autogenous grinding mill, including several base plates and several lifting bars;
[0008] Each base plate includes a base plate substrate, several wing plates, and a first wear-resistant steel plate; the base plate substrate has a fan-shaped structure, and the wing plates extend circumferentially outward along both sides of the base plate substrate; the first wear-resistant steel plate is embedded in the base plate substrate and close to the inner wall of the cylinder; wherein, the base plate substrate and each wing plate are made of rubber; any two base plates are combined by adjacent wing plates to form an installation position;
[0009] Each lifting bar includes a lifting base, a snap-fit part, and a second wear-resistant steel plate; the snap-fit part extends downward along a portion of the bottom surface of the lifting base and snaps into a corresponding mounting position; the second wear-resistant steel plate is embedded in the lifting side of the lifting base; wherein, both the lifting base and the snap-fit part are made of rubber; the second wear-resistant steel plate is partially pressed onto the first wear-resistant steel plate.
[0010] Furthermore, this includes several fasteners;
[0011] Each wing plate has several arc-shaped notches, and the corresponding arc-shaped notches on the adjacent wing plates of any two bottom plates are combined to form a first through hole; each lifting bar has several second through holes; the first through hole and the second through hole are set in a one-to-one correspondence;
[0012] Fasteners pass through the corresponding second through holes and first through holes in sequence to fix the lifting bar in the corresponding mounting position.
[0013] Furthermore, any second through hole is a countersunk hole.
[0014] Furthermore, it includes a first steel frame, which is encased within the base plate and each wing plate.
[0015] Furthermore, it includes a second steel frame, which is enclosed within the lifting base.
[0016] Furthermore, any lifting strip includes a third wear-resistant steel plate; the third wear-resistant steel plate is embedded in the lifting base and located inside the second wear-resistant steel plate.
[0017] Furthermore, each lifting bar has a cross-section near the top of the inner wall of the cylinder.
[0018] Furthermore, the angle between the cross section and the upper surface of the lifting bar ranges from 10 degrees to 20 degrees.
[0019] Furthermore, the angle between the cross section and the upper surface of the lifting bar is within the range of 15 degrees.
[0020] Furthermore, the base plate is provided with several fixing holes, which are used to insert fixing members to fix the base plate to the inner wall of the cylinder.
[0021] Furthermore, the bottom of the snap-fit portion is chamfered.
[0022] Beneficial effects:
[0023] This technical solution designs a new outer ring liner to solve the problems of frequent replacement and high risk of grout leakage caused by the large wear of existing metal liners.
[0024] The outer ring liner includes several base plates and several lifting strips. For each base plate, any base plate includes a base plate base, several wing plates, and a first wear-resistant steel plate; the base plate base has a fan-shaped structure, and the wing plates extend circumferentially outward along both sides of the base plate base; the first wear-resistant steel plate is embedded in the base plate base and close to the inner wall of the cylinder; wherein, the base plate base and each wing plate are made of rubber; any two base plates are combined by adjacent wing plates to form an installation position. For each lifting strip, any lifting strip includes a lifting base, a snap-fit part, and a second wear-resistant steel plate; the snap-fit part extends downward along a portion of the bottom surface of the lifting base and snaps into the corresponding installation position; the second wear-resistant steel plate is embedded on the lifting side of the lifting base; wherein, the lifting base and the snap-fit part are both made of rubber; the second wear-resistant steel plate is partially pressed onto the first wear-resistant steel plate.
[0025] Therefore, this technical solution replaces the outer ring liner with a steel-rubber composite material. The main structure of the base plate and lifting strips (i.e., the base plate, wing plates, and lifting base) is based on rubber. Considering that the base plate is more prone to wear near the cylinder and the lifting side of the lifting strips is more prone to wear, a first wear-resistant steel plate and a second wear-resistant steel plate are installed at appropriate locations. Here, rubber, as an elastic material, can better absorb the impact from the falling ore and grinding media. Furthermore, the first and second wear-resistant steel plates, through partial pressing, form a continuous, highly wear-resistant structure, effectively improving the wear resistance of high-wear areas and thus extending the lifespan of the outer ring liner. Ultimately, this achieves the effect of reducing the frequency of maintenance and replacement of the outer ring liner and improving production efficiency.
[0026] Furthermore, since the existing integrated structure of the lifting bar and the base plate has been changed to a separate structure, when the outer ring liner needs to be replaced, the difficulty of replacement and installation is reduced by decreasing the weight of the components during a single transport, which reduces the labor intensity of replacing the outer ring liner and shortens the replacement time; it also indirectly improves production efficiency.
[0027] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.
[0028] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description
[0029] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:
[0030] Figure 1 This is a schematic diagram of the structure after the outer ring liner and the inner ring liner are combined as described in this embodiment;
[0031] Figure 2 This is a schematic diagram of the structure of the bottom plate in the outer ring liner of this embodiment;
[0032] Figure 3 This is a schematic diagram of the installation position formed when any two base plates are combined.
[0033] Figure 4 This is a schematic diagram of the lifting strip in the outer ring liner of this embodiment;
[0034] Figure 5 This is a cross-sectional view of the outer ring liner plate described in this embodiment.
[0035] The reference numerals in the figure are as follows: 1 is the outer ring liner, 2 is the inner ring liner, 3 is the fastener; 11 is the base plate, 12 is the lifting bar; 111 is the base plate base, 112 is the wing plate, 113 is the first wear-resistant steel plate, 114 is the first steel frame, 115 is the arc-shaped notch, 116 is the fixing hole; 121 is the lifting base, 122 is the snap-fit part, 123 is the second wear-resistant steel plate, 124 is the third wear-resistant steel plate, 125 is the second steel frame, 126 is the second through hole, and 127 is the cross-section. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.
[0037] 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.
[0038] Semi-autogenous grinding mills are one of the most commonly used pieces of equipment in mineral processing and crushing. The outer liner of a semi-autogenous grinding mill plays a crucial role in lifting materials and grinding media (i.e., steel ball grinding media) and protecting the mill from the impact of these materials and media. During operation, as the materials and grinding media continuously rub against and impact the outer liner, it gradually wears down and thins, losing its ability to protect the mill and lift materials. Therefore, timely maintenance and replacement are necessary.
[0039] However, existing integral metal outer ring liners suffer from significant wear variations across different parts during practical applications, resulting in a short overall lifespan and frequent replacements. Failure to replace them promptly can lead to severe slurry leakage, drastically reducing the continuous grinding time of the semi-autogenous mill and reducing production efficiency. Therefore, this embodiment aims to provide an outer ring liner suitable for semi-autogenous mills to address these technical shortcomings.
[0040] The outer ring liner plate of this utility model, applicable to a semi-autogenous mill, will be further described in detail below with reference to the embodiments shown in the accompanying drawings.
[0041] Combination Figures 1 to 5 As shown, the outer ring liner 1 has a fan-shaped structure, with its inner circumferential wall abutting against the inner ring liner 2, and is fixed to the inner wall of the semi-autogenous grinding mill by fasteners passing through the fixing holes 116. In specific implementations, the fasteners are bolts. In this embodiment, the outer ring liner includes a base plate 11 and lifting bars 12.
[0042] Specifically, any of the base plates 11 includes a base plate 111, a plurality of wing plates 112, and a first wear-resistant steel plate 113. The base plate 111 has a fan-shaped structure, and the wing plates 112 extend circumferentially outward along both sides of the base plate 111. The first wear-resistant steel plate 113 is embedded in the base plate 111. Meanwhile, considering that the outer ring liner of the semi-autogenous mill experiences greater wear near the cylinder, the first wear-resistant steel plate 113 is also positioned near the inner wall of the cylinder. In this case, the upper surface of the first wear-resistant steel plate 113 is flush with the upper surface of the base plate 111, and the other sides are covered within the base plate 111. In specific implementations, the base plate 111 and each wing plate 112 are made of rubber; any two base plates 12 are combined through adjacent wing plates 112 to form a mounting position (e.g., ...). Figure 3 (As shown).
[0043] In one specific implementation, a first steel frame 114 is also provided on the base plate 11. The first steel frame 114 is enclosed within the base plate 111 and each wing plate 112. In this case, the strength of the base plate 11 can be effectively improved by the first steel frame 114, making it suitable for grinding hard mineral materials.
[0044] Each lifting bar 12 includes a lifting base 121, a snap-fit portion 122, and a second wear-resistant steel plate 123. The snap-fit portion 122 extends downwards along a portion of the bottom surface of the lifting base 121 and snaps into a corresponding mounting position. The second wear-resistant steel plate 123 is embedded in the lifting side of the lifting base 121. At this time, combined with... Figure 4 and Figure 5 As shown, three adjacent circumferential sides of the second wear-resistant steel plate 123 are exposed and flush with the corresponding sides of the lifting base 121, while the other three sides are enclosed within the lifting base 121. In practical applications, if the cylinder rotates clockwise, the right side of the lifting bar 12 is the lifting side; if the cylinder rotates counterclockwise, the left side of the lifting bar 12 is the lifting side. In specific implementations, both the lifting base 121 and the snap-fit part 122 are made of rubber; the second wear-resistant steel plate 123 is partially pressed onto the first wear-resistant steel plate 113.
[0045] Similarly, as a specific implementation, a second steel frame 125 is also provided on the lifting bar 12. The second steel frame 125 is enclosed within the lifting base 121. In this case, the strength of the lifting bar 12 can be effectively improved by the second steel frame 125, making it suitable for grinding hard mineral materials.
[0046] To facilitate the engagement of the lifting bar 12 with the mounting position formed by the snap-fit part 122 and the two adjacent base plates 11, a chamfer is provided at the bottom of the snap-fit part 122 so that the lifting bar 12 can be smoothly inserted into the corresponding mounting position from top to bottom.
[0047] Meanwhile, to ensure the reliability of the installation between the lifting bar 12 and the base plate 11, fasteners 3 are also provided. Each wing plate 112 has several arc-shaped notches 115, and the corresponding arc-shaped notches 115 on adjacent wing plates 112 of any two base plates 11 combine to form a first through hole. Each lifting bar 12 has several second through holes 126. The first through holes and the second through holes 126 are arranged in a one-to-one correspondence. At this time, the fasteners 3 will pass through the corresponding second through holes 126 and the first through holes in sequence to fix the lifting bar 12 in the corresponding mounting position. In this embodiment, three arc-shaped notches 115 are spaced apart on each wing plate 112, and the fasteners 3 are bolts. As a preferred embodiment, to facilitate the installation of the fasteners 3, the second through holes 126 are countersunk holes.
[0048] To prevent interference between the top of the lifting bar 12 and the cylinder, a cross section 127 is provided on each lifting bar 12 near the inner wall of the cylinder. Specifically, the angle between the cross section 127 and the upper surface of the lifting bar ranges from 10 degrees to 20 degrees. Preferably, the angle between the cross section 127 and the upper surface of the lifting bar is 15 degrees, which ensures optimal lifting effect of the lifting bar while avoiding interference between the lifting bar 12 and the cylinder.
[0049] In a preferred embodiment, to further improve the wear resistance of the lifting strip, a third wear-resistant steel plate 124 is provided in the area adjacent to the lifting side. Specifically, the third wear-resistant steel plate 124 is embedded in the lifting base 121 and located inside the second wear-resistant steel plate 123. Specifically, the upper surface of the third wear-resistant steel plate 124 is flush with the upper surface of the lifting base 121, and the other surfaces are all covered within the lifting base 121.
[0050] In specific implementation, each base plate 11 is circumferentially fixed to the inner wall of the cylinder by fasteners passing through the fixing holes 116, and corresponding mounting positions are formed at the adjacent flanges 112 of two adjacent base plates 11. Each lifting bar 12 is snapped and fixed to its mounting position by the snap-fit part 122, and then the fastener 3 is passed through the second through hole 126 and the first through hole formed by two adjacent arc-shaped notches 115 in sequence to detachably fix the lifting bar 12 between the two base plates 11 to obtain a complete outer ring liner 1. When the semi-autogenous grinding mill is running, since the outer ring liner 1 is made of steel-rubber composite material, that is, based on rubber to form the main structure of the base plate and the lifting bar (i.e., base plate base, flange and lifting base), a first wear-resistant steel plate 113 is provided on the base plate 11 near the cylinder, a second wear-resistant steel plate 123 is provided on the lifting side of the lifting bar 12, and a third wear-resistant steel plate 124 is provided on the inner side of the lifting side. At this point, rubber, as an elastic material, can better absorb the impact from the falling ore and grinding media. It can also be embedded with corresponding wear-resistant steel plates in severely worn areas. Furthermore, the first wear-resistant steel plate 113 and the second wear-resistant steel plate 123 are partially pressed together to form a continuous, highly wear-resistant structure, thereby effectively improving the wear resistance of high-wear areas and the lifespan of the outer ring liner. This, in turn, reduces the frequency of maintenance and replacement of the outer ring liner, improving production efficiency.
[0051] Meanwhile, since the lifting bar 12 and the base plate 11 are separate structures, if the lifting bar 12 is severely worn, only the corresponding lifting bar 12 needs to be removed, without removing the entire outer ring liner 1. If the entire outer ring liner needs to be replaced, the separate structure can reduce the weight of the components during a single transport, thereby reducing the difficulty of replacement and installation, alleviating the labor intensity of replacing the outer ring liner 1, and shortening the replacement time; it also indirectly improves production efficiency.
[0052] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.
Claims
1. An outer ring liner suitable for a semi-autogenous mill, characterized in that, Including the base plate and lifting strips; Each base plate includes a base plate substrate, several wing plates, and a first wear-resistant steel plate; the base plate substrate has a fan-shaped structure, and the wing plates extend circumferentially outward along both sides of the base plate substrate; the first wear-resistant steel plate is embedded in the base plate substrate and close to the inner wall of the cylinder; wherein, the base plate substrate and each wing plate are made of rubber; any two base plates are combined by adjacent wing plates to form an installation position; Each lifting bar includes a lifting base, a snap-fit part, and a second wear-resistant steel plate; the snap-fit part extends downward along a portion of the bottom surface of the lifting base and snaps into a corresponding mounting position; the second wear-resistant steel plate is embedded in the lifting side of the lifting base; wherein, both the lifting base and the snap-fit part are made of rubber; the second wear-resistant steel plate is partially pressed onto the first wear-resistant steel plate.
2. The outer ring liner for a semi-autogenous mill according to claim 1, characterized in that, Includes several fasteners; Each wing plate has several arc-shaped notches, and the corresponding arc-shaped notches on the adjacent wing plates of any two bottom plates are combined to form a first through hole; each lifting bar has several second through holes; the first through hole and the second through hole are set in a one-to-one correspondence; Fasteners pass through the corresponding second through holes and first through holes in sequence to fix the lifting bar in the corresponding mounting position.
3. The outer ring liner for a semi-autogenous mill according to claim 2, characterized in that, Any second through hole is a countersunk hole.
4. The outer ring liner suitable for a semi-autogenous mill according to claim 1, characterized in that, It includes a first steel frame, which is enclosed within the base plate and each wing plate.
5. The outer ring liner suitable for a semi-autogenous mill according to claim 4, characterized in that, It includes a second steel frame, which is enclosed within the lifting base.
6. The outer ring liner suitable for a semi-autogenous mill according to claim 1, characterized in that, Each lifting bar includes a third wear-resistant steel plate; the third wear-resistant steel plate is embedded in the lifting base and located inside the second wear-resistant steel plate.
7. The outer ring liner for a semi-autogenous mill according to claim 1, characterized in that, A cross section is provided at the top of any lifting bar near the inner wall of the cylinder.
8. The outer ring liner for a semi-autogenous mill according to claim 7, characterized in that, The angle between the cross section and the upper surface of the lifting bar ranges from 10 degrees to 20 degrees.
9. The outer ring liner for a semi-autogenous mill according to claim 1, characterized in that, The base plate has several fixing holes, which are used to insert fasteners to fix the base plate to the inner wall of the cylinder.
10. The outer ring liner for a semi-autogenous mill according to claim 1, characterized in that, The bottom of the snap-fit part is chamfered.