JP2016135460A - Vertical disintegrating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disintegrating device being simple equipment and having sufficient disintegrating capability.SOLUTION: A disintegrating device 10 comprises: a cylindrical vessel 12 being vertically disposed, having a disintegrating chamber 14 inside and being disposed with pores 26 or slits where a disintegrated product passes through and which are distributed at least at a part of a peripheral wall 24; an agitation member 16 being disposed at the center part of the vessel and rotating; bead-like disintegrating media 32 housed within the vessel; a raw material supply passage 14a supplying a raw material from a top part into the disintegrating chamber of the vessel; and a product discharge passage 30 discharging the product passed through the pores or the slits disposed at the peripheral wall of the vessel outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vertical crushing apparatus. The vertical crushing apparatus of the present invention comprises agglomerates such as alumina, silicon nitride, silicon carbide, dielectric material, magnetic material, iron oxide, silica, battery material, carbon, magnesium oxide, calcium carbonate, ceramics in general, and inorganic substances. It is particularly suitable for use for mixing with beaded crushing media to crush into primary particles, but is not limited thereto.

  Powders are produced by chemical synthesis or chemical purification to improve product quality, but cause aggregation when dried. Since the performance deteriorates with the agglomerate as it is, it is necessary to return to the state of primary particles as much as possible, and thus a crushing step is required.

Conventionally, a high-speed shear mill, a jet mill (see, for example, Japanese Patent Application Laid-Open No. 2014-200721) or the like is generally used for such a crushing step. However, the high-speed shear mill cannot be crushed to the target particle size, and the resulting product cannot fully exhibit the performance of the material. In addition, since a large amount of compressed air is used in the jet mill, the cost is high, and the product collection requires a bag filter, which is a large-scale facility.
Further, in the high-speed shear mill, the peripheral speed is as high as about 50 to 100 m / s, so that a large power is required and the wear of the member is large and the cost is high.

JP 2014-200721 A

  An object of the present invention is to provide a crushing apparatus that eliminates the drawbacks of the conventional crushing apparatus as described above, has simple facilities, and has a sufficient crushing capacity.

The above problem is solved by the crushing apparatus of the present invention having the following configurations (1) to (5).
(1)
A cylindrical vessel that is vertically arranged, has a crushing chamber inside, and pores or slits through which the crushed product passes are distributed in at least a part of the surrounding wall, and the center of the vessel A rotating stirring member, a bead-shaped crushing medium accommodated in the vessel, a raw material supply passage for supplying a raw material from the top into the crushing chamber of the vessel, and crushing in the crushing chamber, A vertical crushing apparatus comprising a product discharge passage for discharging a product that has passed through pores or slits provided in a peripheral wall of the vessel to the outside.
(2)
The saddle-type crushing apparatus according to (1), further comprising a closing unit that closes at least a part of the pores or slits provided over the entire peripheral wall.
(3)
The saddle-type crushing apparatus according to (2), wherein a plurality of the closing means are provided.
(4)
The crushing apparatus according to any one of (1) to (3), wherein a peripheral speed of the rotary stirring member is 0.5 to 10 m / S.
(5)
The peripheral speed of the rotary stirring member is 2 to 5 m / S.

  In the crushing apparatus of the present invention, the raw material introduced into the vertically arranged vessel from the top and introduced into the center of the crushing chamber is mixed with the media by a rotating stirring member and is radiused by centrifugal force. It is crushed while moving in the direction, broken into fine particles, discharged from the pores or slits, and collected as a product.

  In the crushing apparatus of the present invention, since a bead-shaped crushing medium is used, the surface area of the media is remarkably increased compared to the conventional crushing apparatus, the crushing probability is high, and the crushing apparatus is highly efficient. It can be crushed. Since the peripheral speed (number of rotations) is low and wasteful power is suppressed, high efficiency can be achieved, the power source unit can be reduced, and wear of the members can be suppressed as much as possible, thereby reducing cost. In addition, since no compressed air is used and equipment such as a bag filter is unnecessary, the structure of the apparatus is simple, the handling is excellent, and the cost can be reduced.

It is a vertical sectional view of a crushing device according to an embodiment of the present invention. It is a horizontal sectional view of the crushing apparatus shown in FIG.

  Hereinafter, a crushing apparatus according to an embodiment of the present invention will be described in detail with reference to FIG.

A crushing apparatus 10 according to an embodiment of the present invention is a saddle type and includes a vessel 12 extending in a vertical direction.
The inside of the vessel 12 is a crushing chamber 14, and a raw material supply passage 14 a for supplying raw material powder into the crushing chamber 14 is provided at the center of the top of the vessel 12. The vessel 12 is disposed in the casing 13.

A stirring member 16 for raw material crushing is disposed in the center of the crushing chamber 14. The stirring member 16 includes a rotating shaft 18 and a plurality of stirring blades 20 extending radially outward from the rotating shaft 18. The stirring blade 20 has a substantially rectangular shape and is provided with a rectangular opening 22 in the center. The upper and lower edges of the stirring blade 20 are spaced apart from the upper and lower walls of the vessel 12 by a predetermined distance, and the side edges thereof are spaced from the side wall of the vessel by a predetermined distance. The flow of the mixture of the raw material powder and the media in the crushing chamber 14 is made good, and the crushing is made good. The upper and lower predetermined intervals and the predetermined interval in the radial direction are preferably about 3.5 to 5 times the media diameter.
The number of stirring blades 20 is preferably about 2 to 6.
The stirring member 16 may include a stirring cylinder, a stirring pin, or the like as an alternative to the stirring blade as described above.

  The vessel 12 has a cylindrical peripheral wall 24, and the peripheral wall 24 is provided with pores 26 that allow only the product that has been crushed into fine powder to pass therethrough. The pore may be a slit having a narrow gap.

  A capture chamber 28 is provided between the periphery of the vessel 12 and the casing 13 to capture the product that has passed through the pores 26, and a product discharge passage 30 for discharging the product to the outside of the apparatus communicates with the capture chamber 28. doing.

  In the crushing chamber 14 of the vessel 12, a fine bead-shaped crushing medium 32 (shown extremely enlarged in the figure) is accommodated. The diameter of the crushing medium 32 is preferably about 0.5 to 5 mm.

The rotating shaft 18 of the stirring member 16 extends downward to the outside of the vessel 12 to form a rotational drive shaft 34. The rotational drive shaft 34 is driven at its lower end via a known drive mechanism (not shown). It is connected to a source and is driven to rotate by this drive mechanism. The peripheral speed of the stirring member 16 that is rotationally driven by the rotational drive shaft 34 is preferably about 0.5 to 10 m / s, sometimes 5 m / s or less, and more preferably about 2 to 5.
The rotation axis (rotation axis) of the rotation drive shaft 34 preferably passes through the central axis of the crushing chamber 14.

  Around the vessel 12, there is provided at least one shielding member 36 that can move between an action position (see FIG. 2) in close contact with the outer peripheral wall of the vessel and a non-action position separated from the action position. When the shielding member 36 is in the working position, the shielding member 36 is in close contact with the vessel 12, shields the pores 26 of the portion, adjusts the discharge amount of the product, and retains the raw material in the crushing chamber 14. Control the time and use raw materials as primary particles or products close to primary particles. The shield member 36 is moved by manually operating the hand knob 36a.

  In the crushing apparatus 10 having the above-described structure, the raw material supplied from the raw material supply passage 14a falls into the crushing chamber 14, is stirred by the stirring member 16 together with the crushing medium 32, and the crushing media. It is crushed by the impact force and shearing force.

The crushed particles are moved outward in the circumferential direction by the centrifugal force generated by the rotation of the stirring member 16, and the primary particles or products close to the primary particles pass through the pores 26 provided on the peripheral wall 24 of the vessel 12. Then, it is discharged outside the apparatus via the capture chamber 28 and the product discharge passage 30.
The product is discharged while adjusting the amount of opening and closing of the shielding member 36.

  In the crushing apparatus of the present invention, since a bead-shaped crushing medium is used, the surface area that exerts the crushing force is remarkably increased compared to the conventional crushing apparatus, the crushing probability is high, and the efficiency is high. Can be crushed. In addition, as described above, the peripheral speed (the number of rotations) is as low as 0.5 to 10 m / s, and unnecessary power is suppressed, so that high efficiency can be achieved and the power consumption can be reduced. In addition, since no compressed air is used and equipment such as a bag filter is unnecessary, the structure of the apparatus is simple, the handling is excellent, and the cost can be reduced.

DESCRIPTION OF SYMBOLS 10 Crusher 12 Vessel 14 Crushing chamber 14a Raw material supply passage 16 Stirring member 18 Rotating shaft 20 Stirring blade 22 Opening 24 Perimeter wall 26 Pore 28 Capture chamber 30 Product discharge passage 32 Crushing media 34 Rotation drive 36 Closing member

Claims (5)

  A cylindrical vessel that is vertically arranged, has a crushing chamber inside, and pores or slits through which the crushed product passes are distributed in at least a part of the surrounding wall, and the center of the vessel A rotating stirring member, a bead-shaped crushing medium accommodated in the vessel, a raw material supply passage for supplying a raw material from the top into the vessel crushing chamber, and crushing in the crushing chamber, A vertical crushing apparatus comprising a product discharge passage for discharging a product that has passed through pores or slits provided in a peripheral wall of a vessel to the outside.   2. The vertical crushing apparatus according to claim 1, further comprising a closing means for closing at least a part of the pores or slits provided over the entire peripheral wall.   The saddle-type crushing apparatus according to claim 2, wherein a plurality of the closing means are provided.   The crushing apparatus according to any one of claims 1 to 3, wherein a peripheral speed of the rotary stirring member is 0.5 to 10 m / s.   The crushing apparatus according to claim 4, wherein a peripheral speed of the rotary stirring member is 2 to 5 m / s.

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