A ball mill steel ball screening device
By using staggered buffer plates and wear-resistant buffer layers in the ball mill, the problems of low efficiency and severe wear in traditional steel ball screening devices are solved, achieving efficient screening and reduced maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DEZHOU JINGHUA GRP (PLAIN) DAM CEMENT CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional steel ball screening devices in ball mills suffer from low efficiency, high labor intensity, poor classification accuracy, and severe wear of the screening grid. In particular, the violent impact of falling steel balls leads to high equipment maintenance costs.
A ball mill steel ball screening device was designed, which uses staggered buffer inclined plates to form a stepped falling channel, and a wear-resistant buffer layer is set on the surface of the inclined plates. It is connected to the feed port of the screening machine through a flexible cover to reduce the falling drop and impact kinetic energy of the steel balls.
It effectively reduces the wear of steel balls on the screening grid inside the screening machine, extends the service life of the screening grid, reduces equipment maintenance costs, and improves screening efficiency and accuracy.
Smart Images
Figure CN224547522U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of screening technology, and more specifically, to a ball mill steel ball screening device. Background Technology
[0002] In a ball mill, steel balls serve as the primary grinding media, crushing materials to the target particle size through rotational impact and grinding. To ensure stable operation of the ball mill, the grinding media inside the mill must be screened periodically: firstly, qualified grinding media of different diameters are separated out for re-gradation according to process requirements; secondly, ineffective grinding media (such as steel balls with excessively small diameters after wear) are removed.
[0003] Traditional steel ball screening relies on manual operation, which is not only inefficient and labor-intensive but also results in poor grading accuracy. With the development of automation technology, steel ball screening devices are gradually replacing manual labor. When using a steel ball screening machine (ZSG-600 linear vibrating screen), to reduce the manual labor and equipment investment during steel ball transfer, it is usually placed directly below the steel ball discharge port of the ball mill, allowing the steel balls to fall directly from the discharge port into the screening machine to complete the screening operation.
[0004] However, there is often a natural drop of 0.8-1.5m between the ball outlet of the ball mill and the feed inlet of the ball screening machine. During the fall of the steel balls, the potential energy is rapidly converted into kinetic energy, which causes a violent impact on the surface of the screening grid of the ball screening machine, aggravating the wear of the screening grid, shortening the service life of the screening grid, and increasing the equipment maintenance cost. Summary of the Invention
[0005] The purpose of this application is to provide a ball mill steel ball screening device that can solve the technical problems mentioned in the background art.
[0006] This application provides a ball mill steel ball screening device, including a support frame. The support frame is equipped with a feed hopper and a steel ball screening machine body. The feed hopper is located above the feed inlet of the steel ball screening machine body. The bottom of the feed hopper is equipped with a buffer assembly, which includes a guide cylinder and multiple buffer inclined plates. The guide cylinder is fixedly connected to the bottom of the feed hopper. The multiple buffer inclined plates are staggered on the guide cylinder to form a stepped steel ball falling channel. The side of the buffer inclined plate that contacts the steel ball is provided with a wear-resistant buffer layer. The bottom of the guide cylinder is connected to the feed inlet of the steel ball screening machine body through a flexible cover.
[0007] Furthermore, the guide cylinder is provided with a groove adapted to the buffer inclined plate, the buffer inclined plate is inserted into the groove, and the wear-resistant buffer layer is detachably connected to the buffer inclined plate.
[0008] Furthermore, the wear-resistant buffer layer is made of nitrile rubber, and a plurality of limiting connecting posts are symmetrically fixed on one side of the buffer inclined plate where it contacts the steel ball. The bottom of the wear-resistant buffer layer is provided with connecting holes that are adapted to the limiting connecting posts, and the limiting connecting posts are inserted into the connecting holes.
[0009] Furthermore, the side of the buffer plate that contacts the steel ball is uniformly provided with multiple anti-slip protrusions, and the bottom of the wear-resistant buffer layer is provided with an anti-slip groove that matches the anti-slip protrusions. When the limiting connecting post is inserted into the connecting hole, the surface of the anti-slip protrusions fits against the inner wall of the anti-slip groove.
[0010] Furthermore, a handle is fixed to the outer side of the buffer ramp.
[0011] Furthermore, the feed hopper is provided with a detachable liner, which fits snugly against the inner wall of the feed hopper. The upper part of the liner is turned outward to form a horizontal overlapping edge, and the liner is suspended in the feed hopper through the horizontal overlapping edge. The inner wall of the liner is fixed with a wear-resistant rubber layer.
[0012] Furthermore, the inner surface of the wear-resistant rubber layer is integrally formed with multiple protrusions.
[0013] The beneficial effects of this utility model are:
[0014] This invention effectively reduces the drop height and impact energy of steel balls from the ball mill outlet to the screening machine inlet by setting up staggered buffer inclined plates to form a stepped falling channel, combined with a wear-resistant buffer layer on the surface. This reduces the impact and wear of steel balls on the screening grid inside the screening machine, extends the service life of the screening grid, and lowers equipment maintenance costs. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 These are schematic diagrams showing results in some embodiments of this application;
[0017] Figure 2 This is a cross-sectional view of the feed hopper and buffer assembly in some embodiments of this application;
[0018] Figure 3 This is an exploded view of the structure of the buffer ramp and the wear-resistant buffer layer in some embodiments of this application;
[0019] The reference numerals in the attached figures are as follows:
[0020] 1. Support frame; 2. Feed hopper; 3. Steel ball screening machine body; 4. Buffer assembly; 41. Guide cylinder; 411. Inclined chute; 42. Buffer inclined plate; 421. Limiting connecting column; 422. Anti-slip convex strip; 5. Wear-resistant buffer layer; 51. Anti-slip groove; 6. Flexible cover; 7. Handle; 8. Lining; 81. Horizontal overlapping edge; 9. Wear-resistant rubber layer; 91. Protrusion. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:
[0028] like Figure 1-3 As shown, this application provides a ball mill steel ball screening device, including a support frame 1. The support frame 1 is equipped with a feed hopper 2 and a steel ball screening machine body 3. The steel ball screening machine body 3 is prior art and will not be described in detail here. The feed hopper 2 is located above the feed inlet of the steel ball screening machine body 3. A buffer assembly 4 is provided at the bottom of the feed hopper 2. The buffer assembly 4 includes a guide cylinder 41 and multiple buffer inclined plates 42. The guide cylinder 41 is fixedly connected to the bottom of the feed hopper 2. Preferably, the guide cylinder 41 is welded... At the bottom of the feed hopper 2, multiple buffer inclined plates 42 are staggered on the guide cylinder 41 to form a stepped steel ball falling channel. A wear-resistant buffer layer 5 is provided on the side of the buffer inclined plate 42 where it contacts the steel ball. The bottom of the guide cylinder 41 is connected to the feed inlet of the steel ball screening machine body 3 via a flexible cover 6. Specifically, the upper end of the flexible cover 6 is fixedly connected to the bottom of the guide cylinder 41, and the lower end of the flexible cover 6 is fixedly connected to the feed inlet of the steel ball screening machine body 3. During use, the steel balls to be screened are fed from the ball mill... The steel balls are fed into the feed hopper 2 from the discharge port of the machine, and then discharged from the feed hopper 2 into the buffer assembly 4 between the feed hopper 2 and the feed port of the steel ball screening machine body 3. The steel balls slide down the stepped falling channel formed by multiple staggered buffer inclined plates 42. During the falling process, the original large drop is broken down into multiple small drops by the support and guidance of the inclined plates. At the same time, the wear-resistant buffer layer 5 on the surface of the buffer inclined plate 42 absorbs part of the kinetic energy of the steel ball impact, reducing the falling speed of the steel ball. Finally, the steel balls... After passing through a stepped channel buffer, the steel balls enter the flexible cover 6 and then the main body 3 of the steel ball screening machine to complete the screening operation. By setting up staggered buffer inclined plates 42 to form a stepped falling channel, combined with the wear-resistant buffer layer 5 on the surface, the falling difference and impact kinetic energy of the steel balls from the steel ball outlet of the ball mill to the feed inlet of the steel ball screening machine 3 are effectively reduced. This reduces the impact and wear of the steel balls on the screening grid inside the steel ball screening machine 3, extends the service life of the screening grid, and reduces equipment maintenance costs.
[0029] like Figure 2As shown, the feed cylinder 41 is provided with a groove 411 that matches the buffer inclined plate 42. The buffer inclined plate 42 is inserted into the groove 411, and the wear-resistant buffer layer 5 is detachably connected to the buffer inclined plate 42. The insertion and matching structure of the groove 411 and the buffer inclined plate 42 ensures the ease of installation of the buffer inclined plate 42 and improves the assembly efficiency of the device. The detachable design of the wear-resistant buffer layer 5 allows the wear-resistant buffer layer 5 to be replaced separately after wear, without the need to replace the entire buffer inclined plate 42, thus reducing maintenance costs. At the same time, the wear-resistant buffer layer 5 enhances the impact resistance stability of the buffer inclined plate 42, extends the overall service life of the buffer assembly 4, and ensures the continuous effectiveness of the steel ball buffering process.
[0030] like Figure 2 and Figure 3 As shown, the wear-resistant buffer layer 5 is made of nitrile rubber. Multiple limiting connecting posts 421 are symmetrically fixed on one side of the buffer ramp 42 where it contacts the steel ball. The bottom of the wear-resistant buffer layer 5 has connecting holes (not shown in the figure) that are compatible with the limiting connecting posts 421, and the limiting connecting posts 421 are inserted into these connecting holes. The nitrile rubber wear-resistant buffer layer 5 can effectively buffer the impact of the steel ball, reducing damage to the steel ball and the buffer ramp 42. The insertion and matching of the limiting connecting posts 421 with the connecting holes ensures the accuracy and stability of the wear-resistant buffer layer 5 installation, preventing it from falling off under impact. Specifically, there are four limiting connecting posts 421, arranged in a rectangular shape on the buffer ramp 42.
[0031] like Figure 2 and Figure 3 As shown, multiple anti-slip protrusions 422 are evenly provided on one side of the buffer ramp 42 where it contacts the steel ball. The bottom of the wear-resistant buffer layer 5 is provided with an anti-slip groove 51 that matches the anti-slip protrusions 422. When the limiting connecting post 421 is inserted into the connecting hole, the surface of the anti-slip protrusion 422 fits against the inner wall of the anti-slip groove 51. When the buffer ramp 42 and the wear-resistant buffer layer 5 are positioned by the limiting connecting post 421 and the connecting hole, the anti-slip protrusion 422 and the anti-slip groove 51 are precisely engaged to form a mechanical interlocking structure, which further improves the connection stability between the wear-resistant buffer layer 5 and the buffer ramp 42, ensuring that the buffer layer does not shift or fall off under high-frequency impact, and extending its service life.
[0032] like Figure 2 and Figure 3 As shown, a handle 7 is fixed on the outer side of the buffer ramp 42; the handle 7 simplifies the disassembly and assembly of the buffer ramp 42, and facilitates the maintenance and replacement of the wear-resistant buffer layer 5 or the ramp itself in the later stage, thereby improving the maintenance efficiency of the equipment.
[0033] like Figure 2As shown, the feed hopper 2 is equipped with a detachable inner liner 8, which fits snugly against the inner wall of the feed hopper 2. The upper part of the inner liner 8 is turned outward to form a horizontal overlapping edge 81. The inner liner 8 is suspended inside the feed hopper 2 through the horizontal overlapping edge 81. A wear-resistant rubber layer 9 is fixed to the inner wall of the inner liner 8. The suspension installation of the inner liner 8 through the horizontal overlapping edge 81 ensures the stability of the fit with the inner wall of the feed hopper 2 and facilitates quick disassembly and replacement. The wear-resistant rubber layer 9 of the inner wall can directly withstand the impact of the steel ball, avoiding wear on the feed hopper 2 body and extending its service life. At the same time, the rubber material can buffer the impact of the steel ball, reduce the damage to the surface of the steel ball, and the independent setting of the inner liner 8 means that the entire feed hopper 2 does not need to be replaced during maintenance, reducing equipment maintenance costs.
[0034] like Figure 2 As shown, the inner surface of the wear-resistant rubber layer 9 is integrally formed with multiple protrusions 91. When the steel ball falls into the inner liner 8 and slides down the inner wall, the protrusions 91 contact the steel ball to form a support, guide the steel ball to slide axially, reduce the lateral displacement and disordered rolling of the steel ball during the sliding process, and enable the steel ball to move more smoothly to the outlet of the feed hopper 2.
[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A ball mill steel ball screening device, characterized in that: The device includes a support frame, on which a feed hopper and a steel ball screening machine body are mounted. The feed hopper is located above the feed inlet of the steel ball screening machine body. A buffer assembly is provided at the bottom of the feed hopper. The buffer assembly includes a guide cylinder and multiple buffer inclined plates. The guide cylinder is fixedly connected to the bottom of the feed hopper. The multiple buffer inclined plates are staggered on the guide cylinder to form a stepped steel ball falling channel. A wear-resistant buffer layer is provided on the side of the buffer inclined plate where it contacts the steel ball. The bottom of the guide cylinder is connected to the feed inlet of the steel ball screening machine body through a flexible cover.
2. The ball mill steel ball screening device according to claim 1, characterized in that: The feed cylinder is provided with a groove adapted to the buffer inclined plate, the buffer inclined plate is inserted into the groove, and the wear-resistant buffer layer is detachably connected to the buffer inclined plate.
3. The ball mill steel ball screening device according to claim 2, characterized in that: The wear-resistant buffer layer is made of nitrile rubber. A plurality of limiting connecting posts are symmetrically fixed on one side of the buffer inclined plate where it contacts the steel ball. The bottom of the wear-resistant buffer layer is provided with connecting holes that are adapted to the limiting connecting posts, and the limiting connecting posts are inserted into the connecting holes.
4. The ball mill steel ball screening device according to claim 3, characterized in that: The buffer plate has multiple anti-slip ridges evenly distributed on one side where it contacts the steel ball. The bottom of the wear-resistant buffer layer has an anti-slip groove that matches the anti-slip ridges. When the limiting connecting post is inserted into the connecting hole, the surface of the anti-slip ridges fits against the inner wall of the anti-slip groove.
5. The ball mill steel ball screening device according to claim 1, characterized in that: A handle is fixed to the outside of the buffer ramp.
6. The ball mill steel ball screening device according to claim 1, characterized in that: The feed hopper is provided with a detachable liner that fits snugly against the inner wall of the feed hopper. The upper part of the liner is turned outward to form a horizontal overlapping edge. The liner is suspended in the feed hopper through the horizontal overlapping edge. The inner wall of the liner is fixed with a wear-resistant rubber layer.
7. A ball mill steel ball screening device according to claim 6, characterized in that: The inner surface of the wear-resistant rubber layer is integrally formed with multiple uniform protrusions.