JP2002186952A - Equipment for separating laminated glass into glass fragment and intermediate film fragment and recovering them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an equipment for crushing a waste laminated glass of big size used for a car front glass, or the like, and separating the same into glass fragments and intermediate film fragments to recover and utilize them. SOLUTION: The equipment is provided with a crusher 1 crushing a laminated glass comprising a pair of glasses and an intermediate film and a crushing means 11 comprising a plurality of hammers rotatable at a high speed inside a cylindrical casing 10 having an upper throwing in opening thereon into which the laminated glass crushed by the crusher is thrown in, where a slit shape discharge outlet 13 which discharges a mixture of the glass fragments and the intermediate film fragments crushed by the crushing means 11 is provided beneath the cylindrical casing, and further with a vibrating sieve 3 having a mesh which is provided beneath the crusher, wherein the mixture of the glass fragments and the intermediate fragments dropped over the mesh is separated into the glass fragments and the intermediate film fragments.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pulverizing a laminated glass to separate and recover the glass piece and the intermediate film piece.

[0002]

2. Description of the Related Art As shown in FIG. 4 which is a sectional view of a laminated glass, an intermediate film 5c made of a transparent resin such as polyvinyl butyral is sandwiched between two glass plates 5a and 5b.
The laminated glass 5 bonded and integrated is mainly used for a windshield of an automobile, a window glass of a building, and the like.

In recent years, the recycling of resources has been promoted in order to maintain a clean global environment, and used waste laminated glass such as vehicle windows and building windows, or defective products in the manufacturing process of laminated glass. An attempt has been made to separate the laminated glass into a glass portion and an intermediate film portion and reuse them.

[0004] As such a technique, Japanese Patent Laid-Open Publication No.
Japanese Patent Application Publication No. 298 and Japanese Patent Application Laid-Open No. 7-155634 disclose a crushing apparatus for a plate-like building material and a waste glass product crusher.

Further, Japanese Patent Application Laid-Open No. 5-309655 discloses a laminated glass treatment method in which a laminated glass is pulverized to obtain an intermediate film adhered to glass pieces, the film is put into a water tank and rotated by a stirrer to rotate the intermediate film. A method is disclosed in which a shearing force is applied to an intermediate film under a specific condition of a speed difference from water while swelling.

Further, Japanese Patent Application Laid-Open No. 6-219793 discloses that a laminated glass is cooled to -10 ° C. or less to reduce the adhesive strength of a synthetic resin film, and then the laminated glass is subjected to an impact with a hammer or the like. A method and apparatus for separating, removing, and collecting glass from a synthetic resin membrane simultaneously with crushing are disclosed.

On the other hand, Japanese Patent Application Laid-Open No.
In 149340, a plurality of rotatable impactors are provided in a pulverizing chamber having an inlet for laminated glass at an upper portion and an outlet at a lower portion, and the outlets are sequentially provided in the rotation direction of the impactor. An apparatus for crushing and collecting glass from a laminated glass plate comprising a small outlet and a large outlet is disclosed.

[0008]

However, the above prior art has the following problems.

The inventions described in JP-A-6-190298 and JP-A-7-155634 disclose that when the object to be ground is not a laminated glass but is applied to a laminated glass, a glass portion and an intermediate film portion are formed. It is considered difficult to completely separate them.

Furthermore, in the invention described in Japanese Patent Application Laid-Open No. 5-309655, an intermediate film to which glass pieces adhered after separately pulverizing treatment must be immersed in water to swell, so that when the processing amount is small, Is effective, but it is difficult to cope with a large amount of processing.

Further, the invention described in Japanese Patent Application Laid-Open No. 6-219793 requires a separate facility for cooling the laminated glass to -10 ° C. or lower, which causes a problem that the cost such as facility cost increases. there were.

JP-A-56-149340 by the present applicant
According to the invention described in Japanese Patent Application Laid-Open Publication No. H07-187, the recovered glass portion can be reused, but the intermediate film portion is still in a state where glass pieces are still attached and cannot be reused, and industrial waste I had to dispose of it as a thing.

[0013]

DISCLOSURE OF THE INVENTION The present invention aims at solving the above-mentioned problems, namely, crushing waste laminated glass with a simple structure and then crushing the glass to separate it into glass pieces and interlayer film pieces. It is intended to be able to be recovered and used. By installing a crusher that crushes laminated glass to a certain size in front of a crusher that crushes laminated glass into pieces, automobile windshields and building windows This is an apparatus that throws away waste laminated glass used for glass and the like as it is, that is, in a large size, and continuously treats it to separate glass pieces and intermediate film pieces.

According to the present invention, there is provided a crusher for crushing a laminated glass comprising a pair of glass and an intermediate film, and a cylindrical casing provided with an upper inlet for introducing the laminated glass crushed by the crusher. A crusher comprising a crushing means comprising a plurality of hammers capable of high-speed rotation, and a slit-shaped outlet provided at the lower part of the cylindrical casing for discharging a mixture of the glass piece and the intermediate film piece crushed by the crushing means. A vibrating screen having a mesh provided below the crusher, a mixture of a glass piece and an intermediate film piece dropped on the mesh of the vibrating screen, a glass piece and an intermediate film piece by the operation of the vibrating screen. This is an apparatus for separating and collecting the laminated glass into glass pieces and intermediate film pieces by separating the glass pieces into pieces.

Further, the present invention is characterized in that the crushing means of the crusher is a set of rotatable metal rolls provided with projections and / or cutting blades on the roll surface and arranged next to each other. This is an apparatus that separates and collects glass into glass pieces and intermediate film pieces.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, for example, a crusher 1 and a crusher 2 are provided above and below a crusher 1 and a conveyor 4 for conveying a laminated glass 5 is provided above the crusher 1 as shown in FIG. Are arranged.

Laminated glass 5 put in from conveyor 4
2 and 3, which are an example of a crushing means that is a main part of the crusher 1, a projection 1b and / or a protrusion 1b on the surface of the roll 1a to crush the laminated glass 5. A pair of rotatable metal rolls 1a provided with a cutting blade 1c and arranged adjacent to each other is used as crushing means.

FIG. 2A shows a projection 1b on the roll 1a surface.
FIG. 2B is a front view of an example of the crushing means provided with a slab, and FIG. 2B is a side view. FIG. 3A is a front view of an example of the crushing means provided with a cutting blade 1c on the roll 1a surface, and FIG. 3B is a side view. When the laminated glass 5 is inserted between the rolls 1a, the laminated glass 5 is rotated by a projection 1b or a cutting blade 1c provided on a set of metal rolls 1a rotated by a driving source such as a motor (not shown).
Is pressed to break the glass portion of the laminated glass 5 into a turtle-like shape, and then a shearing force is applied to extend and tear or break the transparent resin portion as the interlayer film. The glass portion of the laminated glass is broken by the crusher, and the transparent resin portion is stretched, torn, or broken, so that the crusher 2 provided at the subsequent stage can easily crush the glass portion. The plurality of hammers 11, 11,... Rotating at high speed, which are crushing means, have a small impact when the glass is broken by colliding with the glass portion, and the plurality of hammers 11, 11,. Damage to rotating parts is reduced.

The number of projections 1b provided on a metal roll 1a, which is a crushing means of the crusher 1 constituting the apparatus of the present invention,
By devising the shape, the shape of the cutting blade 1c, and the like, it is possible to adjust the area of the small glass part when the laminated glass 5 is broken into a turtle shape.

If the area of the glass portion is too small, the intermediate film portion sticks to the rotating portion of the subsequent pulverizer 2, and if the area of the glass portion is too large, the hammer portions 11, 11 which are constituent members of the subsequent pulverizer 2 are formed. Damage to….

A large-sized laminated glass 5 such as a windshield for an automobile or the like can be put in the same state without being broken in advance and separated and recovered into glass pieces 6 and intermediate film pieces 7 according to the present invention. In the apparatus, the preferable area of each glass portion which is put into the crusher 2 constituting the apparatus of the present invention and which is crushed by the crusher 1 and which is formed in the shape of a turtle and adhered to the intermediate film was tested by the present inventors. , 200c
m ² -450 cm ² . If it is less than 200 cm ² , the hammers 11, 11,... Cling to rotating parts such as the handle, which hinders the high-speed rotation of the hammers 11, 11,. In addition, if it is 450 cm ² or more, the hammer 11, 11,
The shock when the glass part is broken by... Is too large and damages the hammers 11, 11,.

Further, in the metal roll 1a which is the crushing means of the crusher 1 constituting the apparatus of the present invention, one metal roll 1a may be provided with both the projection 1b and the cutting blade 1c.

For example, a crushing projection 1b is provided, and
By passing the laminated glass 5 between a pair of rotating rolls 1a provided with the cutting blades 1c, the laminated glass 5 can be divided.

Further, a plurality of the metal rolls 1a may be used in the crusher 1 constituting the apparatus of the present invention. After passing the laminated glass between the pair of rotating metal rolls 1a provided with the projections 1b, the laminated glass 5 is continuously passed between the pair of metal rolls 1a provided with the cutting blades 1c rotating in the same direction. Thus, the laminated glass 5 can be divided.

The laminated glass 5 crushed by the crusher 1 is dropped directly from the crusher 1 into the inlet 12 of the crusher 2 and supplied into the cylindrical casing 10 of the crusher 2.

The pulverizer 2 constituting the apparatus of the present invention has a cylindrical casing 10 turned sideways. A rotary shaft directly connected to a motor (not shown) is provided at the center of the inside thereof. Are provided with a plurality of hammers 11, 11,. The number of revolutions of the motor for rotating the hammers 11, 11,... Provided on the outer periphery of the rotating shaft depends on the amount of the laminated glass 5 crushed by the crusher 1, the area of the small glass part, and the like, and the crushing state. Since it is necessary to change, it is preferable that the number of rotations can be controlled. By changing the rotation speed, the rotation speed of the hammers 11, 11,... Provided on the outer periphery of the rotation shaft can be controlled.

The hammers 11, 11,... Are preferably made of a metal or an alloy not containing nickel as a composition because they are worn by collision with glass. Nickel powder is hammered by collision with glass 11,
If the glass powder is generated from 11, and mixed with glass powder, when glass powder is used as a glass material and reused, a defect caused by nickel may occur in the manufactured glass.

Further, the pulverizer 2 constituting the apparatus of the present invention
Has an inlet 12 for the crushed laminated glass 5 at the upper part of the cylindrical casing 10 and an outlet 13 for the crushed glass piece 6 and the intermediate film piece 7 at the lower part of the cylindrical casing 10.

The outlet 13 is divided into slits, and the size of each of the divided openings is different. The reason for providing the difference in the size of the opening is that, inside the cylindrical casing 10 of the pulverizer 2, the glass piece 6 generated by the collision between the broken laminated glass 5 and the hammers 11, 11,. This is because the intermediate film piece 7 which falls quickly from the narrow opening and has a small amount of fine glass pieces adhered thereto falls from the opening provided later in the rotation direction with a wide slit interval. In addition, a large number of glass pieces are adhered, and the piece of the intermediate film still maintaining rigidity is caused to collide with the hammers 11, 11,... While rotating inside the cylindrical casing 10 again without falling from the opening. The efficiency of separating the laminated glass 5 into glass pieces 6 and interlayer film pieces 7 can be increased.

The apparatus according to the present invention, which has a large scale that can be put into the laminated glass 5 such as a windshield for an automobile or the like without breaking it and can be separated and collected into a glass piece 6 and an intermediate film piece 7, In the discharge port 13 of the crusher 2 constituting the apparatus of the present invention, the preferred interval and number of slit-shaped openings are determined by the present inventor.
In this case, 20 to 30 openings of m to 15 mm were provided, and then 2 to 3 openings of 60 to 80 mm in slit interval were provided.

The mixture of the glass pieces 6 and the intermediate film pieces 7 to which the glass pieces are attached, which is discharged from the discharge port 13 having a plurality of slit-shaped openings, is a mesh of the vibrating screen 3 constituting the apparatus of the present invention. Drop it up.

The vibrating sieve 3 is vibrated by a driving source (not shown), and a mixture of the glass piece 6 dropped from the outlet 13 of the crusher 2 and the intermediate film piece 7 to which the glass piece adheres on the mesh of the vibrating screen 3. The glass piece 6 is dropped below the gap of the mesh by the vibration of the vibrating screen 3, and the glass piece collection box 8 is removed.
The intermediate film piece 7 does not fall from the gap of the mesh, but falls from the end of the vibrating screen 3 into the intermediate film piece collection box 9 and is collected while being separated from the attached glass piece.

Next, the operation of the apparatus for separating and recovering the laminated glass 5 of the present invention into glass pieces 6 and intermediate film pieces 7 and an example of use will be described.

Prior to using the apparatus of the present invention, the laminated glass 5 to be treated is classified by the material of the interlayer (polyvinyl butyral, ethylene-vinyl acetate copolymer, etc.) with or without coloring of the interlayer. In this case, it is preferable to separate the collected materials because different types of collected materials are not mixed at the time of reuse after separation and collection.

First, the laminated glass 5 is transported by the conveyor 4.
By a pair of metal rolls as crushing means of the crusher 1. After the laminated glass 5 is sandwiched between the rolls by a rotating metal roll, the glass portion is broken by a projection or a cutting blade provided on the roll surface, and the intermediate film portion is stretched, torn, or broken. After being shredded, it is put into an inlet 12 provided below the crusher 1 and provided at an upper portion of a cylindrical casing 10 of the crusher 2.

The laminated glass 5 crushed by the crusher 1
Are charged into the crusher 2 and then crushed by collision with a plurality of hammers 11, 11,... Rotating at a high speed inside the cylindrical casing 10, and the fine glass pieces 6 and a small amount of the fine glass pieces adhere thereto. It becomes the intermediate film piece 7 and is discharged from the discharge port 13 provided at the lower part of the cylindrical casing 10.

The glass pieces 6 and the intermediate film pieces 7 discharged are
It falls on the mesh of the vibrating sieve 3 arranged below the grinder 2. Since the glass piece 6 is fine, it passes through the holes of the mesh,
It is collected in the glass piece collection box 8. Since the intermediate film piece 7 is larger in size than the mesh, by tilting the mesh, it is carried on the mesh by vibration and collected in the intermediate film piece collection box 9. The intermediate film piece 7 to which a small amount of fine glass piece adheres is carried on the mesh while being separated from the glass piece by being rubbed on the mesh by vibration, and is collected in the intermediate film piece collection box 9.

When the intermediate film piece 7 separated and recovered in the intermediate film piece recovery box 9 is washed with water, a small amount of glass powder adhering to the surface of the intermediate film piece 7 is removed, and the recovered intermediate film piece 7 is removed. The quality is improved.

In order to know the adhesion ratio of the glass powder adhering to the intermediate film piece 7, it is necessary to burn a predetermined weight of the intermediate film piece 7 and calculate the residue after burning, that is, the weight of the remaining glass. it can.

Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered.

That is, the crusher 2 is not one stage, but two or more stages, and a plurality of crushers may be used. The use of a plurality of crushers 2 increases the size of the apparatus. However, by adjusting the slit width of the discharge port 13 of each crusher 2 and increasing the interval between the slit widths in the front stage, the glass piece 6 and the intermediate film are formed. The efficiency of separation into the pieces 7 can be increased.

The laminated glass 5 of the present invention, which is processed by an apparatus for separating and recovering the laminated glass 5 into a glass piece 6 and an intermediate film piece 7, is laminated using a single-sheet tempered glass, a semi-tempered glass or an untempered glass. Any of glass may be used.

[0043]

According to the apparatus for separating and recovering laminated glass into glass pieces and intermediate film pieces according to the present invention, unnecessary laminated glass is crushed and then crushed, and separated into glass pieces and intermediate film pieces. In addition, since the collected items can be reused, resources can be effectively used and environmental measures can be taken.

Further, the apparatus of the present invention is excellent in processing efficiency because large laminated glass such as a windshield of an automobile can be continuously crushed and crushed, and separated into glass pieces and intermediate film pieces.

[Brief description of the drawings]

FIG. 1 is a side view of an apparatus for separating and collecting a laminated glass of the present invention into glass pieces and intermediate film pieces.

FIG. 2 (a) is a front view of an example of a crushing means which is a main part of a crusher constituting the apparatus of the present invention. (B) It is a side view of an example of the crushing means which is the main part of the crusher which comprises the apparatus of this invention.

FIG. 3 (a) is a front view of an example of a crushing means which is a main part of a crusher constituting the apparatus of the present invention. (B) It is a side view of an example of the crushing means which is the main part of the crusher which comprises the apparatus of this invention.

FIG. 4 is a sectional view of a laminated glass.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Crusher 3 Vibrating sieve 4 Conveyor 5 Laminated glass 6 Glass piece 7 Intermediate film piece 8 Glass piece collection box 9 Intermediate film piece collection box 10 Cylindrical casing 11 Hammer 12 Input port 13 Discharge port

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B02C 18/14 B02C 21/00 D 21/00 23/08 Z 23/08 B07B 1/28 Z B07B 1/28 B09B 5 / 00 ZABZ F-term (reference) 4D004 AA18 AC04 BA06 CA04 CA08 CB13 4D021 AB02 CA03 CB18 EA10 EB01 4D063 CC01 CC08 GA10 GC02 GC14 GC17 4D065 AA04 BB04 CA12 CB10 CC01 CC08 DD04 EB20 ED23 ED18 ED18 ED18 ED23 ED16

Claims (2)

[Claims] 1. A high-speed crusher for crushing a laminated glass comprising a pair of glass and an intermediate film, and a cylindrical casing provided with an upper inlet for introducing the laminated glass crushed by the crusher. A crusher comprising a crushing means comprising a plurality of rotatable hammers, a crusher provided with a slit-shaped outlet at a lower portion of the cylindrical casing for discharging a mixture of the glass piece and the intermediate film piece crushed by the crushing means, A vibrating sieve having a mesh provided below the crusher,
The mixture of the glass piece and the intermediate film piece dropped on the mesh of the vibrating screen is separated into the glass piece and the intermediate film piece by the operation of the vibrating screen, thereby separating the laminated glass into the glass piece and the intermediate film piece. Device to collect. 2. The combination according to claim 1, wherein the crushing means of the crusher is a set of rotatable metal rolls provided with projections and / or cutting blades on the roll surface and arranged adjacent to each other. A device that separates and collects glass into glass pieces and interlayer film pieces.