JP3189608U - Stirring ball mill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a stirring ball mill having an improved crushing or crushing ability. SOLUTION: The stirring ball mill 10 is provided with a rotatable axial stirring shaft 24, and the stirring shafts are spaced apart along the stirring shaft and are basically mounted at right angles to the stirring shaft. In a stirring ball mill having 22, at least one grinding component has at least one non-pin-like geometric protrusion, the geometric protrusion forming one unit with each grinding component. It is characterized by doing. [Selection diagram] Fig. 1

Description

  The present invention relates to an agitating ball mill or a fine mill that uses a grinding aid to grind or pulverize the product in a carrier medium, and in particular, is equipped with an improved grinding component having a higher grinding or pulverizing ability. The present invention relates to an improved stirring ball mill.

  Generally, a stirring ball mill is used to pulverize and / or disperse solid parts such as pigments in a liquid carrier medium. In the chamber of the stirring ball mill, the dispersion is performed by pulverization and mixing. The stirring ball mill is provided with a stirring shaft, and a disk or a vertically erecting pin is rotated by the stirring shaft to separate or pulverize solids dispersed in the liquid. The shaft is generally a mechanical device and is driven by a motor or the like. A grinding aid, such as silicon dioxide, or the like, is introduced into the grinding chamber of the stirred ball mill and cooperates with the disk or radial pins to disperse the solid material in the liquid. The solid is pulverized and after the mixing of the solid and liquid is complete, the mixture is separated from the grinding aid and discharged.

  Applicants have recognized that such separation means are described in US Pat. No. 5,333,804A, the entire contents of which are incorporated herein. This specification describes a known disk mill, and the present invention achieves better performance compared to this disk mill. U.S. Pat. No. 4,620,673 A describes an agitator that uses an axial pin mounted on a rotor as a known example. This pin moves between fixed pins that extend inside the grinding chamber. This specification is likewise incorporated herein by reference in its entirety. Two different mill types (disc mill and mill with axially extending pins) provide similar performance in the examples.

  Furthermore, German Published Patent No. 2154059A discloses a stirrer comprising a rotatable axial shaft and a number of disks, the disks being connected by pins in the vertical direction. An axial pin connects two adjacent disks.

  U.S. Pat. No. 4,066,215A describes a grinder with a number of grinding discs in which one rotatable axial shaft connects perpendicularly to the shaft. Each disk has a slit that is curved in the longitudinal direction, has a similar angle, and is spaced equally to form a circle surrounding the axis of rotation.

  United Kingdom Registered Patent No. 1084731A discloses an active pin disposed on a radially extending carrier. Adjacent carriers are thin arms or disk sectors. Adjacent fan portions do not overlap and create a free space, and the pins of the adjacent fan portions extend axially in this free space. The surface of this vertical pin located on the sector aligns on the same straight line on the axially spaced sector. That is, the pin subsequently extends coaxially in the upper direction of the adjacent sector. As shown in FIGS. 13 and 14, the three fan-shaped portions are disposed between the disk portions opposed in the axial direction. That is, at least two fan-shaped portions are disposed between the pin end portion and the collinear surface of the next fan-shaped portion.

  In known disc mills, a mixing disc is generally attached to the drive shaft. The disc can be provided with a curved slit, thereby enhancing the pumping action of the liquid slurry and the effect of the grinding media. It is also known to use a large disk with humps spaced in the radial direction. This hump spreads from the inner circumference of the disk to the outer circumference, and generates the pumping force and the working force of the grinding media inside the mill. Increase. Prior art mills use arms or blades spaced apart in the axial and radial directions. These extend radially from the agitation shaft, and pin-like active elements extend from one or both sides of the arm.

  It would be desirable to produce a stirred ball mill equipped with an improved grinding component to improve grinding performance when mixing or dispersing solids in a liquid carrier medium. For example, reducing the time required to reduce the particle size of the solids to the desired region and / or improving the particle size, for example, by the ability to reduce the particle size compared to known mills from the prior art. it can.

US Pat. No. 5,333,804A U.S. Pat.No. 4,620,673A German Published Patent No. 2154059A U.S. Patent No. 4066215A UK registered patent No. 1084731A

  Accordingly, an object of the present invention is to propose a stirring ball mill with improved crushing or crushing ability.

  The object of the present invention is solved by a stirring ball mill having the characteristics described in claim 1. Further preferred embodiments will become apparent from the dependent claims.

  The present invention discloses a stirring ball mill having a rotatable axial stirring shaft, and a plurality of grinding components are disposed on the stirring shaft. The grinding components are spaced from each other and mounted essentially perpendicular to the stirring axis. At least one grinding component has at least one non-pinned geometric protrusion. The geometric protrusions together with the grinding component constitute a non-removable unit. Further, the protrusion may be connected to the grinding component in a detachable state so that it can be replaced, for example, in case of breakage.

  At least one grinding component of the stirred ball mill has at least two penetrations. In this pulverization component, the protruding portion extending in the axial direction is disposed between the through portions. In a preferred embodiment, the grinding component penetration is formed as an arcuate slit. Furthermore, the penetrating portion can be circular or square. The type and shape of the penetrating portion can be changed depending on whether or not the stirring ball mill is used for pulverization and / or crushing. The shape of the grinding component and its penetration is also affected by the quality of the material being processed.

  Furthermore, for example, four protrusions extending in the axial direction can be provided on the grinding component. In this case, all four protrusions can be arranged on the first side surface of the grinding component, or the protrusions can be offset on both sides of the grinding component. In this case, it has been found to be particularly effective to arrange the first and second protrusions on the first side of the grinding component and the third and fourth protrusions on the second side. In such a configuration, the first and second protrusions are disposed on the grinding component with a radial offset at an angle of about 180 degrees. The third and fourth protrusions are offset in the radial direction at an angle of about 180 degrees. In a preferred embodiment, the first and second protrusions are disposed on the grinding component with an offset of about 90 degrees relative to the third and fourth protrusions. It will be apparent to those skilled in the art that the protrusions can be placed on the grinding component at any angle. The number of protrusions on the grinding component and / or on different surfaces of the grinding component can also be varied at will. Therefore, the above-described embodiment does not ultimately limit the scope of protection.

  The height of the protrusion is preferably 0.5 to 3 times the product plate thickness of the grinding component. The diameter of each protrusion is preferably 1 to 3 times the height of each protrusion. The geometric protrusion can be configured as a hemisphere, a truncated cone or a polygonal truncated cone, or a cylinder or a polygonal column. Different constituent shapes or geometric shapes of the protrusions can be combined with each other. It is also possible, for example, to attach different grinding components on the agitation shaft and to make the protrusions have different shapes. It will be apparent to those skilled in the art of stir ball mill construction that geometrically different projections can be mounted on the grinding component. It is also clear that the grinding components are arranged in the stirring ball mill so that the protrusions of the individual grinding components stand up in the opposite direction. Furthermore, the grinding component can be arranged to face the slits of the adjacent grinding component rather than to the open face of the adjacent grinding component. Thus, for those skilled in the art, all the foregoing descriptions of different embodiments do not ultimately limit the scope of protection.

  Next, embodiments of the present invention and their advantages will be described in detail with reference to the accompanying drawings. Some shapes are simplified, others are enlarged to make it easier to understand, so the size ratios between the individual components in the figure always match the actual size ratios. Do not mean. The same reference numerals are used for components of the present invention having the same or the same action. Further, for ease of viewing, only the symbols required for the description of each drawing are attached to each drawing.

It is a perspective view of the stirring ball mill by a prior art. It is a side view of the grinding | pulverization component which concerns on this invention. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes. It is a three-dimensional view showing a pulverized component having protrusions of different shapes.

  FIG. 1 is a perspective view of a prior art stirring ball mill. The stirring ball mill 10 has a housing 12 that delimits an internal mill chamber 14. The housing 12 has a first end 16 and a second end 18. In FIG. 1, the housing 12 is shown only in the rear region of the agitating ball mill 10 and shows a number of grinding components 22 according to the present invention. The grinding components 22 are spaced apart from one another. The disk 22 and the spacing member 20 are disposed on the stirring shaft 24 and are rotatably supported on the first end 16 of the housing 12. The agitation shaft 24 is rotated by a motor system at an arbitrary speed and is not described in detail herein. However, those skilled in the art will recognize that the disk 22 according to the present invention can be used with other types of stirrer mills and is not limited to use with the preferred stirrer ball mill 10 shown and described herein. Recognize from disclosure. The stirring ball mill 10 has a product inlet 17 and a product outlet 19. A separation filtration device 40 is disposed at the second end 18 of the housing 12 to prevent the grinding media from flowing out of the agitating ball mill 10 with the product flow. The number and spacing of the disks 22 and spacing holders 20 on the agitation shaft 24 can be changed to suit a given application.

  FIG. 2 is a side view of a grinding component according to the present invention. In this side view, the protrusion 30 is disposed on the first side surface 34 and the second side surface 36. The protrusions 30 on the first side surface 34 are offset by 180 degrees, and similarly, the protrusions 30 on the second side surface 36 are also offset from each other in the radial direction by 180 degrees. Each protrusion 30 on the first side surface 34 and each protrusion 30 on the second side surface 36 are arranged offset by 90 degrees. The height 42 of the protrusion is 1 to 3 times the product plate thickness 38 of the grinding component 22.

  FIGS. 3-9 are different three-dimensional views showing the grinding component 22 with differently shaped protrusions 30. All the grinding components 22 shown have a penetration 32 between the protrusions 30. In all drawings, the penetration 32 is shown as a slit extending in an arc. However, it will be apparent to those skilled in the art of construction of stirred ball mills that the penetration can be formed in a variety of shapes. At the center of each grinding component 22, there is a stirring shaft insertion portion 28, which can be fixed on a stirring shaft (not shown) of the stirring ball mill. The diameter 44 of each projection 30 shown is 1.5 times the height of each projection 30 in a preferred embodiment. As shown, the protrusion 30 can be hemispherical, truncated cone or polygonal truncated cone, or cylindrical or polygonal prism shape. From FIG. 3 to FIG. 9, it can be seen that the protrusions 30 are arranged at 180 degrees relative to each other on the first side surface 34. It can also be seen that the protrusions 30 on the second side 36 of the grinding component 22 are located at 90 degrees relative to the protrusions 30 on the first side 34 of the grinding component 22.

  The invention has been described with reference to the preferred embodiments. It will be apparent to those skilled in the art that changes and modifications can be made without departing from the scope of protection of the following claims.

DESCRIPTION OF SYMBOLS 10 Stirring ball mill 12 Housing 14 Mill chamber 16 First end 17 Product inlet 18 Second end 19 Product outlet 20 Interval holder 22 Grinding component, disk 24 Stirrer shaft 28 Stirrer shaft insert 30 Projection 32 Penetration 34 1st side 36 2nd side 38 Product thickness 40 Separation filtration device 42 Height 44 Diameter

Claims (11)

  A stirring ball mill (10) having a rotatable axial stirring shaft (24), wherein the stirring shaft (24) is spaced from the stirring shaft (24) along the stirring shaft (24). In a stirred ball mill (10) having a grinding component (22) mounted essentially at right angles to it, at least one said grinding component (22) has at least one non-pin geometric projection ( 30), and the geometric projection (30) constitutes one unit with each grinding component (22).   Stirring ball mill (10) according to claim 1, characterized in that at least one said grinding component (22) has at least two penetrations (32).   The stirring ball mill (10) according to claim 1 or 2, wherein the protrusion (30) extending in the axial direction is located in a region between the through portions (32) in the grinding component (22). A stirred ball mill (10) characterized in that it is arranged.   The stirring ball mill (10) according to any one of claims 1 to 3, wherein the through portion (32) is formed as a bow-shaped slit and / or a circle and / or a polygon. A stirring ball mill (10).   The stirring ball mill according to any one of claims 1 to 4, wherein the first, second, third and fourth protrusions (30) extend in the axial direction on the grinding component (22). The first and second protrusions (30) extending in the axial direction are disposed on the first side surface (34) of the grinding component (22), and the third and fourth protrusions extending in the axial direction. A stirring ball mill characterized in that (30) is arranged on the second side surface (36) of the grinding component (22).   6. The stirring ball mill (10) according to claim 5, wherein the first and second protrusions (30) extending in the axial direction are arranged to be offset in the radial direction by about 180 degrees, and are arranged in the axial direction. The extending third and fourth protrusions (30) are radially offset by about 180 degrees, and the third and fourth protrusions (30) extending in the axial direction are The stirring ball mill (10), wherein the stirring ball mill (10) is disposed with an axial line offset by about 90 degrees with respect to the first and second protrusions (30) extending in the axial direction.   It is a stirring ball mill (10) as described in any one of Claims 1-6, Comprising: The height (42) of the said protrusion (30) is the product plate | board thickness (38) of the said grinding | pulverization component (22). Stirring ball mill (10) characterized by being 1 to 3 times   The stirring ball mill (10) according to any one of claims 1 to 7, wherein the diameter (44) of the protrusion (30) is 1.5 to 3 of the height of the protrusion (30). A stirring ball mill (10) characterized by being doubled.   It is a stirring ball mill (10) as described in any one of Claims 1-8, Comprising: The said geometrical protrusion (30) is a hemisphere, a truncated cone or a polygonal frustum, or a cylinder or a polygonal column shape. A stirring ball mill (10) characterized in that:   Stirring ball mill (10) according to any one of the preceding claims, characterized in that the projections (30) extending in the axial direction can be combined with each other. .   The stirring ball mill (10) according to any one of claims 1 to 10, comprising the different grinding component (22) on the stirring shaft (24), wherein the protrusion of the grinding component (22). A stirring ball mill (10), wherein (30) has different shapes.