Crushing device and method for producing crushed material
A crushing device and crushing technology, applied in grain processing, etc., can solve the problems of reduced crushing efficiency, inability to manage the maximum target size of crushed objects, wear, etc., and achieve the effect of preventing wear
Active Publication Date: 2016-08-24
高纯度硅股份有限公司
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Problems solved by technology
[0009] However, since the polysilicon as the object to be crushed is relatively hard, the crushing teeth may be chipped or worn, or the crushing teeth may be bent.
In this case, it becomes impossible to manage the maximum target size of crushed objects to be obtained, and the crushing efficiency when crushing polysilicon (to be crushed) to a desired size decreases
In addition, impurities generated due to the wear of the crushing teeth are mixed into the crushed polysilicon block (crushed material), which becomes a cause of mixed contamination and affects the quality of the crushed product.
Method used
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Embodiment Construction
[0035] Hereinafter, embodiments of a polysilicon crushing device and a polysilicon crushed product manufacturing method in which the crushing device and crushed product manufacturing method of the present invention are applied to crush polycrystalline silicon will be described with reference to the drawings.
[0036] Such as figure 1 As shown, in the polycrystalline silicon crushing device 1 of the present embodiment, the two rollers 3 are arranged in the casing 2 so that the rotation axes 4 are parallel to the horizontal direction, and the outer peripheral surfaces of the two rollers 3 protrude outward in the radial direction. There are multiple crushing teeth 5 . At this time, if figure 2 As shown, the outer peripheral surface of each roller 3 is not a uniform arc surface, but is formed into a polyhedral shape formed by connecting elongated flat surfaces 6 (flat parts) in the axial direction along the circumferential direction. Screw holes 7 are provided at the two ends o...
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An apparatus for fracturing in which: a fracturing tooth is formed so that a base-end portion has a larger diameter than that of a top-end portion, and a tapered part is formed at the base-end portion so as to expand from the top toward the base; a fixing cover is formed along a longitudinal direction of rolls; in the fixing cover, fixing holes for fracturing teeth are formed along the longitudinal direction so that the fracturing tooth is inserted therein; each of the fixing holes has a slope in which the tapered part is in contact at a surface; a fracturing teeth unit is fixed to the roll in a state in which the top-end portion of the fracturing tooth is protruded from the fixing hole radially-outwardly of the roll and the tapered part is wedged between the slope of the fixing hole and the roll.
Description
technical field [0001] The present invention relates to a crushing device for crushing objects to be crushed into pieces of required size and a method for manufacturing crushed objects using the crushing device. Background technique [0002] Various crushing devices are proposed according to the type of objects to be crushed. For example, when crushing polycrystalline silicon for producing single crystal silicon, the crushing devices shown in Patent Document 1 to Patent Document 3 are used. [0003] Patent Document 1 discloses a method of crushing rod-shaped polycrystalline silicon with a roll crusher to obtain bulk silicon. This roll crusher is a single roll crusher that accommodates one roll in a housing. A plurality of teeth are formed on the surface of the roll, and polysilicon is sandwiched between these teeth and the inner wall of the housing and impacts are continuously applied to crush the rod-shaped material. polysilicon. [0004] On the other hand, Patent Docume...
Claims
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IPC IPC(8): B02C4/08B02C4/30
CPCB02C4/08B02C4/30
Inventor 佐藤基树多田竜佐
Owner 高纯度硅股份有限公司