JP2001000877A - Glass pulverizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glass pulverizer high in mechanical strength, improve in durability and enhanced in the workability of glass pulverization. SOLUTION: By a lower motor 13, a lower metal mill part 11 is rotated in one direction, and by an upper motor 14, an upper metal mill part 12 is rotated in the other direction. Glass pieces (a) in a feeding box 19 are passed through a feeding hole 12b and fed between the glass pulverizing surfaces 11a, 12a and are crushed by the weight of the upper metal mill part 12. At the same time, forces of compression, impact, shearing, friction, and cutting are applied to them to finely pulverize them. Since a mill method is adopted, the mechanical strength of a glass pulverizer 10 is increased to improve the durability thereof. The obtained glass powder becomes homogenous. By continuously feeding the glass pieces (a), continuous pulverization is performed. Therefore, the workability of pulverization of the glass pieces (a) is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass crusher, and more particularly to a glass crusher for crushing glass in order to recycle resources.

[0002]

2. Description of the Related Art Conventionally, a glass plate and a glass bottle are ground with a hammer or the like, and the obtained glass powder is mixed with, for example, coarse particles as an anti-seizing agent of a press-formed product, and fine particles with an additive added thereto. It was used as a road pavement material by foaming. However, in such pulverization with a hammer, the working efficiency per unit time is low, and the particle size of the pulverized glass powder is not uniform.

To solve this problem, a glass crusher described in, for example, Japanese Patent Application Laid-Open No. 8-318172 entitled "Glass crushing apparatus and glass fine crushing method" is known. This conventional machine has a flat cylindrical casing having a glass inlet at the center of the cylinder, and a spout of the ground glass powder at the top of the cylinder, and a rotor rotatably housed in the casing. Have. In the rotor, a plurality of crushing plates are radially arranged on the outer periphery of a disk-shaped rotor main body. A wear-resistant protector is detachably attached to the inner peripheral surface of the casing.

[0004] The glass plate and the glass bottle put into the casing from the glass feed port collide with the crushing plate of the rotating rotor and the protector of the casing many times, and gradually become cornerless glass powder. . The glass powder thus obtained is blown up by the wind force generated in the casing by the rotating force of the rotor, and is blown out of the glass outlet to the outside of the glass crusher. As a result, the processing capacity per hour of the glass pulverizer is increased, the particle size of the pulverized glass powder can be adjusted and pulverized, and sharp edges on the glass surface can be removed.

[0005]

However, in the conventional glass crusher, the glass is
Since the crushing plate and protector are crushed while repeatedly hitting the rotating crushing plate and the protector in the casing, even if the crushing plate and the protector are made of abrasion-resistant material, the crushing machine has high durability. Was low. Moreover, this conventional machine is of a batch type in which a certain amount of glass is put into a casing. Therefore, the workability is higher than that of the above-described pulverization with a hammer, but a sufficiently high work efficiency cannot be obtained because glass must be processed for each batch. In particular, in the case of hardened glass which is hard to be crushed, such a phenomenon has been remarkable.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a glass crusher capable of increasing the mechanical strength to improve the durability and improving the workability of the glass crushing. .

[0007]

According to the first aspect of the present invention, there is provided a lower mortar having an upper surface serving as a glass crushing surface for crushing glass, and a glass crushing surface superposed on the lower mortar. A glass crusher comprising: an upper die having a supply hole for supplying glass to a lower surface, and rotating means for relatively rotating the lower die and the upper die about a vertical axis thereof. It is. The material of the lower mortar and the upper mortar is not limited as long as it has a hardness capable of crushing the glass. A metal die made of cast iron or steel may be used. Further, the surface of various base materials may be subjected to a treatment for increasing abrasion resistance. For example, a mortar in which a heat-resistant or semi-melted wear-resistant metal (tungsten, manganese, etc.) is sprayed on its surface may be used. Furthermore, a stone mill may be used.
The variety of millstone is not limited. Natural stone or ceramics may be used. The size and weight of the lower mill and the upper mill are not limited. Although the shape is not limited, a column shape is generally used.

[0008] The type of glass to be ground is not limited.
For example, various types of glass plates such as window glass, various types of glass containers such as beer bottles and cups can be used. Further, it may be a glass having normal hardness or a hard glass having high strength.
The particle size of the crushed glass powder is not limited. For example, several μ
m to several hundred μm. The rotating means may rotate only the lower mill or only the upper mill. Further, as in the second aspect of the present invention, the upper and lower dies may be used. The direction of rotation of the upper mill and the lower mill by the rotating means may be different from each other or the same. The rotating means is not limited. For example, it may be an electric motor or various actuators such as a hydraulic motor. Further, the rotating mechanism of the rotating means is not limited.
For example, the upper shaft portion and the lower shaft portion may be rotated by directly connecting the output shaft of the drive unit, or may be rotated indirectly via a power transmission system such as a chain, a belt, and a gear.

According to a second aspect of the present invention, the rotating means has an upper driving section for rotating the upper mill and a lower driving section for rotating the lower mill. It is a glass crusher.

[0010]

According to the present invention, while supplying glass between the glass crushing surface of the upper mill and the glass crushing surface of the lower mill from the supply hole, the upper mill and the lower mill are rotated by the rotating means. Rotate relatively about its vertical axis. On this occasion,
The glass is crushed by the load of the upper mortar, and the energy transmitted from this rotating means to the rotating mortar is compressed,
Impact, shear, friction, and cutting forces are applied to the glass. As a result, stress is generated in the glass, and the glass is crushed. As described above, since the milling method is adopted as the glass crushing means, the mechanical strength of the glass crusher can be increased and the durability can be improved. Moreover,
By continuously feeding glass into the supply holes, continuous grinding of glass can be performed. Thereby, the workability of the glass pulverization is improved.

In particular, according to the second aspect of the present invention, the glass is ground by rotating the upper mill by the upper drive and rotating the lower mill by the lower drive.
Thereby, the stress generated in the glass introduced between the glass crushing surfaces increases, and the workability of the glass crushing can be further improved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a glass crusher according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a glass crusher according to one embodiment of the present invention.
FIG. 2 is an enlarged top view of a lower mill portion of the glass crusher according to one embodiment of the present invention. FIG. 3 is an enlarged bottom view of the upper mill portion of the glass crusher according to one embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a glass crusher. The glass crusher 10 includes a lower metal mortar (lower mortar) 11 which is a substantially cylindrical body made of cast iron, and a glass crusher 10 on the lower metal mortar 11. An upper metal die (upper die) 12, which is a substantially cylindrical body made of superposed cast iron, and rotating means 15 for rotating the lower metal die 11 and the upper metal die 12, respectively. The upper surface of the lower metal die 11 is a glass crushing surface 11a for crushing the glass piece a, and the lower surface of the upper metal die 12 is a glass crushing surface 12a. These glass grinding surfaces 11
a and 12a are in sliding contact. The upper metal die 12 has a supply hole 12b for supplying a glass piece a between the glass crushing surfaces 11a and 12a. The rotating means 15 has a lower motor (lower drive unit) 13 and an upper motor (upper drive unit) 14.
According to 3, 14, the lower metal mill 11 and the upper metal mill 12 are simultaneously rotated about their vertical axes (the vertical center axis of the cylindrical body). Note that the supplied glass piece a is coarsely crushed in advance (cullet =
Glass waste). Hereinafter, these components will be described in detail.

As shown in FIG. 1, the glass crusher 10 has a large box-shaped collection box 16 for storing crushed glass powder b. A cylindrical cover 17 is provided upright at the center of the bottom surface of the collection box 16, and the lower motor 13 is housed in the cylindrical cover 17. The center of the lower surface of the lower metal die 11 is fixed to the tip of the output shaft 13a protruding upward from the lower motor 13. The lower metal mill 11 is a mill having a circular shape in plan view. The upper surface 11a of the lower metal die 11 has a substantially conical shape projecting upward so that its center is high and its peripheral edge is low. At the center of the upper surface 11a of the lower metal die 11,
A short connecting shaft 18 protrudes. In other words, the upper surface 11a of the lower metal mortar portion 11 is inclined at an inclination angle θ such that the outer side in the radial direction becomes gradually lower around the connection shaft 18. A number of grooves 11b are formed in the upper surface of the lower metal die 11 (see FIG. 2). These grooves 11b extend linearly outward in the radial direction with the center (connection shaft insertion portion) as the center. Alternatively, it extends radially outward from the one groove.
Some of these grooves 11b are formed in parallel at regular intervals. Further, the depth and width of these grooves 11b may be uniform or may be different.

The upper metal die 12 has a substantially cylindrical shape with a shallow concave lower surface. In the center of the lower surface of the upper metal die 12, a shaft hole 1 into which the tip of the connecting shaft 18 is loosely inserted.
2c is formed. The lower surface of the upper metal die 12 is gradually inclined downward at an inclination angle θ toward the outside in the radial direction around the shaft hole 12c. This upper metal die 12
Are formed with a large number of grooves 12d on the lower surface (see FIG. 3). The lower surface 12a of the upper metal die 12 is formed in the same shape as the upper surface 11a of the lower metal die 11. Thus, the glass crusher 10 of one embodiment is
Are grooves 11b, 12d on each of the glass crushing surfaces 11a, 12a.
Has a metal die engraved on the surface thereof, so that the obtained glass powder b can be formed into an optimal size and shape as a glass material for road pavement. The upper surface of the upper metal die 12 has a concave portion 1 for taking in a glass piece a having a circular shape in plan view.
2e is depressed. In addition, this upper metal die 1
2, a part of the outer peripheral portion penetrates through the bottom surface of the intake concave portion 12 e and the lower surface of the upper metal die portion 12, and
2b is formed.

As shown in FIG. 3, one end of the lower surface of the upper metal die 12 is communicated with the lower end of the supply hole 12b so that the shaft hole 12c is wound from the outside. The glass piece supply groove 12f is formed. The glass piece supply groove 12f gradually decreases in groove width and groove depth from the supply hole 12b side end toward the other end. On the upper part of the upper metal mortar portion 12, a charging box 19 for a piece of glass a is attached. This input box 1
9, the upper motor 14 is provided outside. The output shaft 14a of the upper motor 14 is directed downward, and a drive roller 20 pressed against the outer peripheral surface (side surface) of the upper metal die 12 is fixed to the output shaft 14a. A guide roller 21 supported by a bracket 21a is pressed against the outer peripheral surface of the upper metal die 12 on the side opposite to the drive roller 20.

Next, the operation of the glass crusher 10 according to one embodiment of the present invention will be described. As shown in FIG. 1, when the output shaft 13a of the lower motor 13 is rotated, the lower metal die 11 rotates in the direction of the arrow in FIG. At the same time, when the drive roller 20 is rotated by the upper motor 14, the upper metal die 12 is guided by the guide roller 21,
It rotates in the rotation direction (the same direction as the lower metal mortar portion 11) shown by the arrow in FIG. In addition, the charging box 19 also rotates integrally with the upper metal die portion 12. The rotational speeds of the upper metal mill 12 and the lower metal mill 11 are set to different speeds so that the glass piece a can be finely ground. As described above, the rotation direction of the upper metal die portion 12 and the lower metal die portion 11 are set to the same direction, and the respective rotation speeds are made different, so that the glass piece a can be ground more finely.

At this time, the glass piece a put into the input box 19 is then gradually taken in through the concave portion 12e, the supply hole 12b, and the glass piece supply groove 12f. Each glass crushing surface 12a, 1
It is supplied to the gap 1a. As a result, the supplied glass piece a is crushed by the load of the upper metal die 12, and the lower motor 13 and the upper motor 14 are further crushed.
The compression, impact, shear, friction, and cutting forces (mainly in the tearing direction) are applied by the energy transmitted to the upper and lower metal mortar portions 12 and 11 during rotation. As a result, stress is generated in the glass piece a, and the glass piece a is crushed. The glass powder b ground in this manner is applied to the glass ground surfaces 11 a, 12 a of the upper metal mill 12 and the lower metal mill 11.
Drops through the groove from the gap between the two to the outside, and the collection box 1
Collected to 6. As a result, the particle size of the glass powder b can be made uniform. In addition, the glass pieces may be separated and supplied for each type.

As described above, since the metal mill is used to pulverize the glass piece a, the mechanical strength of the glass pulverizer 10 itself can be increased, and the durability thereof can be improved. In addition, since the glass piece a is continuously supplied to the supply hole 12b, the glass piece a can be continuously crushed. As a result, the work efficiency of grinding the glass piece a can be increased. Further, in this embodiment, the lower metal mill 11 and the upper metal mill 12 are simultaneously rotated by the upper motor 14 and the lower motor 13 to crush the glass piece a.
Glass piece a put between glass crushing surfaces 11a and 12a
The stress generated therein increases, and the workability of this glass grinding can be further enhanced. In addition, a solvent (alcohol or the like) may be supplied together with the supply of the glass waste to promote the miniaturization of the glass powder. The rubbing speed is low, but the mortar can be rotated at a high speed by taking measures to prevent the mortar from being heated. Furthermore, by classifying the ground glass powder b and supplying it again,
Further miniaturization is possible.

[0019]

According to the present invention, the glass is crushed by the milling method, so that the mechanical strength of the glass crusher can be increased and the durability can be improved. In addition, the work efficiency of glass crushing can be improved. Further, it is easy to make the particle size of the obtained glass powder uniform.

In particular, according to the second aspect of the present invention, the upper mill is rotated by the upper drive unit and the lower mill is rotated by the lower drive unit. The stress generated in the crushed glass increases, and the working efficiency of the glass crushing can be further increased.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a glass crusher according to one embodiment of the present invention.

FIG. 2 is an enlarged top view of a lower mill portion of the glass crusher according to one embodiment of the present invention.

FIG. 3 is an enlarged bottom view of an upper mill portion of the glass crusher according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Glass crusher, 11 Lower metal mill (lower mill), 11a, 12a Glass crushing surface, 12 Upper metal mill (upper mill), 12b supply hole, 13 Lower motor (lower drive) 14 upper motor (upper drive), 15 rotating means, a glass piece (glass), b glass powder.

Claims (2)

[Claims] 1. A lower mill portion having an upper surface serving as a glass crushing surface for crushing glass, and a supply hole for supplying glass to a lower surface serving as a glass crushing surface is formed so as to be superimposed on the lower mill portion. A glass crusher comprising: an upper mortar portion; and a rotating means for relatively rotating the lower mortar portion and the upper mortar portion about their vertical axes. 2. The glass crusher according to claim 1, wherein the rotating means has an upper drive section for rotating the upper mill section and a lower drive section for rotating the lower mill section.