A wet ball mill grinding system

Abstract

The present invention is applicable to the technical field of ball milling. The present invention discloses a wet ball mill grinding system including a grinding and dispersing wheel, wherein the grinding and dispersing wheel includes a grinding and dispersing wheel body evenly provided with variable radial blind holes connected to a first axial hole, and a variable radial through hole is provided between two adjacent variable radial blind holes, wherein the variable radial through hole is connected to a separation channel formed by a central through hole provided by the grinding and dispersing wheel body and the outside of the grinding and dispersing wheel body, and the variable radial through hole is connected during grinding and closed when stopped. When in use, the grinding and dispersing wheel rotates at a high speed to generate centrifugal force to make the variable radial through hole connected. When the grinding and dispersing wheel stops, the variable radial through hole is closed under the action of the grinding slurry. It can prevent materials and grinding balls from entering the central through hole from the radial channel, resulting in the discharge of unqualified materials at the next start-up. At the same time, the processing difficulty is low, ensuring better dynamic balance, thereby increasing the service life.

Description

Technical Field

[0001] The invention relates to the technical field of ball milling, and in particular to a wet ball milling system. Background Art

[0002] When the existing wet ball mill is grinding, there is a certain pressure in the grinding cylinder. When grinding starts, the material and grinding balls are easy to enter the discharge channel, so that the initially discharged material always does not meet the requirements. Therefore, it is necessary to prevent the material or grinding balls that do not meet the requirements from entering the discharge channel when grinding is stopped or at the beginning. For example, in the stirring ball mill with Chinese patent number CN106061613B, the separation device is composed of at least one spiral, and the channel length and curvature of the separation device are increased to reduce the material and grinding balls from entering the discharge channel when grinding is stopped. Although this structure can play a certain role, its structure is difficult to process and it is not easy to maintain dynamic balance during operation. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a wet ball mill grinding system, which can prevent the grinding balls from entering the separator and being discharged after work after shutdown, thereby reducing the processing difficulty and achieving better dynamic balance and increasing the service life.

[0004] In order to solve the above problems, the present invention provides a wet ball mill grinding system, which includes a grinding and dispersing wheel, which includes a grinding and dispersing wheel body, and the grinding and dispersing wheel body is evenly provided with variable radial blind holes connected to a first axial hole, and a variable radial through hole is provided between two adjacent variable radial blind holes, and the variable radial through hole is connected to a separation channel formed by a central through hole provided on the grinding and dispersing wheel body and the outside of the body, and the variable radial through hole is connected during grinding, and the variable radial through hole is closed or becomes smaller when stopping.

[0005] Furthermore, the variable radial blind hole also includes a fixed bar and a movable bar that is rotatably connected to the grinding and dispersing wheel body and radially cooperates with the fixed bar to form a closed state. When the movable bar rotates, the variable radial through hole formed with the fixed bar of the adjacent variable radial blind hole is closed or reduced in size.

[0006] Furthermore, the radial blind hole becomes larger from the inside to the outside.

[0007] Furthermore, the fixed bar and the movable bar are respectively in an arc-shaped structure.

[0008] Furthermore, a second axial hole is provided in the variable radial through hole.

[0009] Furthermore, the distance between the second axial hole and the central through hole is greater than that between the first axial hole and the second axial hole is located in the radial blind hole or blocked by the movable bar when the movable bar is rotated at the maximum angle.

[0010] Furthermore, a separator is provided in the central through hole and is connected with the variable radial through hole in an axially closed radial direction, and an annular separation chamber is provided between the separator and the central through hole.

[0011] The wet ball mill grinding system of the present invention comprises a grinding and dispersing wheel, the grinding and dispersing wheel comprises a grinding and dispersing wheel body, the grinding and dispersing wheel body is evenly provided with variable radial blind holes connected with a first axial hole, a variable radial through hole is provided between two adjacent variable radial blind holes, the variable radial through hole is connected with a separation channel formed by a central through hole provided by the grinding and dispersing wheel body and the outer side of the body, the variable radial through hole is conducted during grinding, and the variable radial through hole is closed or reduced when stopped. When in use, centrifugal force is generated, and the movable bar movably connected with the body opens outward under the action of the centrifugal force, so that the variable radial through hole changes from being closed to being a through hole that can be connected with the central through hole, and when grinding stops, the movable bar moves toward the adjacent fixed bar under the action of the grinding slurry to close the radial channel. Thus, it is prevented that the material and the grinding ball enter the central through hole from the radial channel, resulting in the discharge of the material that does not meet the requirements when starting next time. At the same time, the structure has low processing difficulty and is easier to distribute, ensuring better dynamic balance, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the description only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 The figure is a schematic diagram of the cross-sectional structure of the first embodiment of the grinding and dispersing wheel along a direction perpendicular to the rotating shaft.

[0014] Figure 2 It is a schematic diagram of the structure of the variable radial through hole in the closed state of the first embodiment.

[0015] Figure 3 2 is a schematic structural diagram of a second embodiment of a grinding and dispersing wheel.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the second embodiment of the grinding and dispersing wheel along a direction perpendicular to the rotating shaft.

[0017] Figure 5 It is a schematic diagram of the structure of the variable radial through hole in the closed state of the second embodiment.

[0018] Figure 6 The grinding and dispersing wheel of the first embodiment is combined with the separator along Figure 1 Schematic diagram of the cross-section structure in the specified direction.

[0019] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the claims of the present invention in conjunction with specific embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments proposed by ordinary technicians in this field before making creative work are within the scope of protection of the present invention.

[0021] It should be understood that in the description of the present invention, all directional indication terms, such as "upper", "lower", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. They are only used to explain the relative positional relationship, movement, etc. of the components shown in the drawings. When the specific posture changes, the directional indication may also change accordingly.

[0022] In addition, the descriptions such as "first" and "second" in the present invention are only used for distinction, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features of "first" and "second" can explicitly or implicitly indicate at least one of the technical features. In the description of the present invention, "multiple" means at least two, that is, two or more, unless otherwise clearly defined; "at least one" means one or one and more.

[0023] like Figure 1 - Figure 2 As shown, the present invention provides an embodiment of a wet ball milling system.

[0024] The wet ball mill grinding system includes a grinding and dispersing wheel, which includes a grinding and dispersing wheel body 1. The grinding and dispersing wheel body 1 is evenly provided with variable radial blind holes 11 connected to a first axial hole 12, and a variable radial through hole 13 is provided between two adjacent variable radial blind holes 11. The variable radial through hole 13 is connected to a separation channel formed by a central through hole 10 provided on the grinding and dispersing wheel body and the outer side of the grinding and dispersing wheel body 1. The variable radial through hole 13 is connected during grinding, and becomes smaller or closed when stopped.

[0025] Specifically, the grinding system only improves the grinding and dispersing wheel, and other unexplained components are implemented using existing technologies. The variable radial blind hole 11 also includes a fixed bar 110 and an active bar 14 that is rotatably connected to the grinding and dispersing wheel body and cooperates with the fixed bar 11 in the radial direction to form a closed state. When the active bar 14 is rotated to the maximum angle, it contacts the fixed bar 110 of the adjacent variable radial blind hole 11, so that the variable radial through hole 13 is closed or reduced.

[0026] In the initial state, since the opening of the variable radial blind hole 11 is relatively large, the slurry in the grinding cylinder acts as a downward force, causing the opening of the radial blind hole 11 to gradually expand, thereby causing the movable bar 14 to rotate toward the adjacent fixed bar, thereby closing the variable radial through hole 13, thereby ensuring that the material does not enter the separation channel and is discharged at the next start. When the variable radial through hole 13 becomes smaller, due to the tension between the slurry, it is difficult for the slurry to enter the smaller variable radial through hole 13, thereby also achieving the above purpose.

[0027] Since the variable radial blind holes and the variable radial through holes can be evenly arranged on the main body, the difficulty of processing can be reduced, better dynamic balance can be ensured, and the service life can be increased.

[0028] In this embodiment, the variable radial blind hole 11 becomes larger from the inside to the outside, that is, it has a trumpet-shaped structure. The fixed bar 110 and the movable bar 14 are respectively in an arc-shaped structure, which has a better acceleration effect on the slurry during dispersion.

[0029] like Figure 3 As shown in FIG. 6 , the present invention also provides a second embodiment, that is, a second axial hole 15 is provided in the variable radial through hole. The distance between the second axial hole 15 and the central through hole 10 is greater than that between the second axial hole 15 and the first axial hole 12, and when the movable bar is at the maximum rotation angle, the second axial hole 15 is located in the radial blind hole 11 or is blocked by the movable bar 14. The other structures are the same as those in the above embodiment and will not be described in detail.

[0030] The central through hole 10 is provided with a separator 2 which is connected to the variable radial through hole in the axially closed radial direction, and an annular separation chamber 3 is provided between the separator 2 and the central through hole 10. The separation chamber 3 is closed in the axial direction and is connected to the variable radial through hole 13 in the radial direction. During separation, smaller materials enter the separation chamber due to the small centrifugal force and are separated by the separator. During the separation process, the materials only move in the direction of the separation path and will not have an axial effect on the performance of the separator, thereby improving the service life of the separator. At the same time, since the materials in the separation chamber will also form stratification, that is, the smaller materials are close to the separator surface, while the larger materials are farther away, this avoids blockage on the separator surface, thereby also improving the separation efficiency.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents, and these modifications or replacements may cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wet ball mill grinding system, comprising a grinding and dispersing wheel, wherein the grinding and dispersing wheel comprises a grinding and dispersing wheel body, characterized in that: The grinding and dispersing wheel body is evenly provided with variable radial blind holes connected with the first axial hole, and a variable radial through hole is provided between two adjacent variable radial blind holes. The variable radial through hole is connected with a separation channel formed by a central through hole provided on the grinding and dispersing wheel body and the outer side of the body. The variable radial through hole is conductive during grinding, and is closed or becomes smaller when stopped. The variable radial blind hole includes a fixed bar and an active bar which is rotatably connected with the grinding and dispersing wheel body and cooperates with the fixed bar in the radial direction to form a closed state. When the active bar rotates, the variable radial through hole formed with the fixed bar of the adjacent variable radial blind hole is closed or becomes smaller. The fixed bar and the active bar are respectively in arc-shaped structures, and a separator is provided in the central through hole.

2. The grinding system according to claim 1, characterized in that: The radial blind hole becomes larger from inside to outside.

3. The grinding system according to claim 1 or 2, characterized in that: A second axial hole is provided in the variable radial through hole.

4. The grinding system according to claim 3, characterized in that: The distance between the second axial hole and the central through hole is greater than that between the first axial hole and the second axial hole, and when the movable bar is rotated to the maximum angle, the second axial hole is located in the radial blind hole or is blocked by the movable bar.

5. The grinding system according to claim 1, characterized in that: The separator is axially closed and radially connected with the variable radial through hole. An annular separation chamber is arranged between the separator and the central through hole.

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