JP2001104928A - Apparatus for separating laminated glass into glass and intermediate film for recovery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover waste laminated glass by crushing it and separating it into glass pieces and an intermediate film. SOLUTION: Hammers which can be rotated at a high speed are arranged in a cylinder having upper and lower openings, the lower part opening of the first step crusher and the upper part opening of the second step crusher are connected together in series, an inlet for charging waste laminated glass into the upper part opening of the first step crusher, a connection opening for feeding a mixture of crushed glass pieces and intermediate film pieces to which glass pieces are adhered into the upper part opening of the second step crusher connected with the lower part opening of the first step crusher, a slit-shaped discharge opening for discharging the mixture from the lower part opening of the second step crusher, and a vibrating screen having meshes installed in the lower part of the discharge opening are arranged, and a mixture of the glass pieces and the intermediate film pieces dropped on the meshes of the screen is separated into the glass pieces and the intermediate film by operating the screen, so that the glass and the intermediate film are separated/recovered from the laminated glass.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus capable of pulverizing waste laminated glass, separating the waste glass into glass pieces and intermediate film pieces, and recovering the pieces.

[0002]

2. Description of the Related Art As shown in FIG.
It is mainly used for a front window glass of a vehicle, a window glass of a building, etc., and is bonded between two glass plates 2a, 2b via an intermediate film 2c made of a flexible synthetic resin such as polyvinyl butyral. Things.

In recent years, the promotion of global environment improvement and resource recycling has been advocated, and scraps of buildings and vehicles, or laminated glass that has become defective in the manufacturing process of laminated glass have been replaced with glass parts. Attempts have been made to separate them into intermediate film portions and reuse them.

One such technique is disclosed in Japanese Patent Application Laid-Open No. 56-149340, filed by the present applicant, in which a plurality of impactors rotatable into a grinding chamber having an inlet for laminated glass at the top and an outlet at the bottom. And a device for crushing and collecting glass from a laminated glass plate, comprising a small outlet and a large outlet provided with the discharge port sequentially in the rotation direction of the impactor.

Further, Japanese Patent Application Laid-Open Nos. 6-190298 and 7-155634 disclose a crushing apparatus for plate-like building materials and a crushing apparatus for waste glass products.

[0006] Further, Japanese Patent Application Laid-Open No. Hei 5-309655 discloses that a laminated glass is crushed as a processing of a laminated glass to obtain an intermediate film adhered to glass fragments, and the film is put into a water tank and rotated with a stirrer to form an intermediate film. A method is disclosed in which a shearing force is applied to an intermediate film while swelling under a specific condition of a speed difference from water.

Further, Japanese Patent Application Laid-Open No. 6-219793 discloses that the laminated glass is cooled to -10 ° C. or less to reduce the adhesive force of the 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.

[0008]

However, the above prior art has the following problems.

Japanese Patent Application Laid-Open No. 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 has glass pieces still attached and remaining, and cannot be reused. They had to be disposed of as waste.

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

Furthermore, in the invention described in JP-A-5-309655, the intermediate film to which the glass pieces having been separately pulverized has been adhered 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, in the invention described in Japanese Patent Application Laid-Open No. 6-219793, equipment for cooling the laminated glass to -10 ° C. or less is separately required, which causes a problem that the cost such as equipment cost increases. there were.

[0013]

DISCLOSURE OF THE INVENTION The present invention aims at solving the above-mentioned problems, that is, it is possible to pulverize waste laminated glass into a simple structure, separate it into glass pieces and intermediate film pieces, and recover and reuse them. For the purpose, it has a plurality of hammers that can rotate at high speed inside a cylindrical casing having openings at the top and bottom, and connects the lower opening of the first stage crusher and the upper opening of the second stage crusher in series. Then, into the upper opening of the first-stage pulverizer, an input port for introducing the waste laminated glass, and in the upper opening of the second-stage pulverizer connected to the lower opening of the first-stage pulverizer, A connection port for delivering a mixture of the glass piece and the intermediate film piece to which the glass piece adheres, a slit-like discharge port for discharging the mixture of the glass piece and the intermediate film piece through the lower opening of the second-stage pulverizer, and the discharge port And a vibrating sieve having a mesh at the bottom of the The mixture of the glass piece and the intermediate film piece dropped on the mesh is separated into a glass piece and an intermediate film by the operation of the vibrating sieve, and further, a slit at a connection port which is a discharge part of the first-stage pulverizer. Provided is an apparatus for separating and collecting glass and an intermediate film from a laminated glass in which a slit interval of an outlet of a second-stage pulverizer is smaller than an interval.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a crusher 1 of the present invention comprises a first-stage crusher 10 and a second-stage crusher 20 which are vertically connected to each other. A charging port 13 for charging the waste laminated glass 2 is provided in the section, and a second-stage pulverizer 20 is provided.
A slit-shaped outlet 23 for discharging a mixture of the glass piece 3 and the intermediate film piece 5 is provided in the lower opening of the first stage crusher 1.
A glass piece 3 crushed by the first-stage crusher 10 at a connection portion between the lower opening of the first crusher 10 and the upper opening of the second-stage crusher 20;
A connection port 14 for sending out a mixture with the intermediate film piece 4 to which the glass piece 3 adhered was provided, and a vibrating sieve 6 having a mesh was provided below the discharge port 22.

The first-stage pulverizer 10 is obtained by turning a cylindrical casing 11 sideways. A rotary shaft directly connected to a motor (not shown) is provided at the center of the inside thereof, and the outer periphery of the rotary shaft is driven by the rotation of the motor. It has a plurality of hammers 12 that can rotate at high speed.

The hammers 12, 1 provided on the outer periphery of the rotating shaft
Since the rotation speed of the motor for rotating 2,... Needs to be changed depending on the amount of waste laminated glass to be charged, the speed can be freely controlled.

Since the hammers 12, 12,... Are worn by the impact with the glass, a metal material containing no nickel is used. This is because nickel powder is mixed into the separation glass and does not cause defects caused by nickel when glass pieces are reused as glass raw materials.

The second-stage pulverizer 20 is provided with the first-stage pulverizer.
It is almost the same as the stage pulverizer 10 and has a cylindrical casing 21.
A rotating shaft directly connected to a motor is provided at the center of the inside thereof, and a plurality of hammers 22, 22, 22, 22, 22, 22, 22, 23, 22, 23, 22, 23, and 18, which can be rotated at high speed by the rotation of the motor are provided on the outer periphery of the rotating shaft.
··have.

The connection port 14 is connected to the first-stage pulverizer 10.
A glass piece 3 crushed by the first-stage crusher 10 to become a small piece and an intermediate film piece 4 to which the glass piece is attached Is provided with a slit 14a through which the mixture of the second and third pulverizers 20 can be dropped.
The third slit 23a was wider than the interval between the slits 23a.

That is, the interval between the slits 14a of the connection port 14 of the first-stage pulverizer 10 is about 20 to 80 mm, preferably 20 to 40 mm, and the interval between the slits 23a of the outlet 23 of the second-stage pulverizer 20 is 5 mm. It is about 15 mm. Second
The reason why the interval between the slits 23a of the step crusher 23 is narrower is that
This is to prevent the intermediate film 4 to which the glass piece has adhered from being discharged as much as possible, and is determined in consideration of the thickness of the intermediate film piece 5 and the thickness of the glass piece 3. The interval between the slits 23a of the second-stage crusher 23 is designed in consideration of the thickness of the glass plate and the like, but when processing a laminated glass of a thick plate,
A cover or the like that can be attached to and detached from the slit with bolts or the like and that can adjust the interval may be provided.

The vibrating screen 6 is vibrated by a driving source (not shown), and a mixture of the glass piece 3 and the intermediate film piece 5 dropped on the mesh of the vibrating screen 6 is vibrated by the vibrating screen 6 to remove the glass piece 3. It is dropped below the gap of the mesh and collected in the cullet box 7, and the intermediate film piece 5 falls from the end of the vibrating screen 6 into the intermediate film collection box 8 without being dropped in the mesh and is collected.

Further, the number of hammers provided in the second-stage crusher 20 was reduced by half to the number of hammers provided in the first-stage crusher 10.

Next, the operation of the crusher 1 and an example of its use will be described.

Before the apparatus of the present invention is used, the color of the waste laminated glass 2 to be treated and the type of the intermediate film with a colored shade band are classified according to the type. This is preferable because collected products of different types do not coexist at the time of use.

First, the waste laminated glass 2 is transported by a transport conveyor, and is loaded from the loading port 13 of the first-stage pulverizer 10. It is preferable that large-sized ones be cut into appropriate sizes and then charged.

The waste laminated glass 2 in the first-stage pulverizer introduced from the inlet 13 is provided with a plurality of high-speed rotating hammers 1.
The glass pieces 3 and the intermediate piece 4 having the glass pieces attached thereto are separated from the laminated glass into glass pieces 3 and the intermediate piece 4 having the glass pieces attached thereto. 4 falls from the slit 14a of the connection port 14,
It is sent to the second stage crusher 20.

The glass piece 3 is crushed into a small size and does not catch compared with the intermediate film 4 to which the glass piece has adhered. Since the intermediate film piece 4 to which the glass piece is attached is larger in size than the glass piece 3, it is less likely to fall than the glass piece 3, and even after the glass piece 3 falls, it continues to rotate in the first crusher 10, When it becomes a relatively small piece, and when the glass piece 3 is removed and becomes a shape that is easy to fall, it falls later than the glass piece 3,
The glass piece 3 is discharged from the connection port 14 of the first-stage pulverizer 10 as an intermediate film 4 still adhered.

Then, the intermediate film 4 and the like to which the glass pieces which did not fall from the connection port 14 are adhered to the first-stage pulverizer 1.
Circulating through the inner space 0 and grinding is subsequently carried out by the hammers 12, 12,.

The glass piece 3 sent into the second stage crusher 20
The glass part is further crushed by the collision with the plurality of hammers 22, 22,... Rotating at a high speed, and the glass part is further crushed. The glass piece 3 is separated.

The separated glass piece 3 and intermediate film piece 5 are dropped onto the vibrating sieve 6 through a slit of an outlet 23 provided at the lower part of the second-stage pulverizer 20.

If the separated intermediate film piece 5 is washed with water, a small amount of glass powder adhering to the surface of the intermediate film piece 5 is removed, and the quality of the recovered intermediate film piece 5 is improved.

The separated glass pieces 3 are collected in the cullet box 7, and the amount of the glass pieces 3 adhered to the intermediate film pieces 5 collected in the intermediate film collection box 8 is, for example, a predetermined amount of the separated intermediate film. 5 is burned, and the remaining amount after burning, that is, the amount of glass can be determined.

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

In this embodiment, the first-stage pulverizer 10 and the second-stage pulverizer 20 are connected and integrated.
The first-stage pulverizer 10 and the second-stage pulverizer 20 may be separated from each other, and may be arranged at intervals above and below.

Further, the separated first-stage pulverizer 10 and second
Another vibrating sieve is provided between the stage pulverizers 20, and only the glass pieces 3 are dropped and collected by the other vibratory sieve. May be supplied from the input port.

The rotation speeds of the hammers 12, 12,..., 22, 22,... Of the first-stage pulverizer 10 and the second-stage pulverizer 20 are freely set separately according to the quality results separated by the pulverization. Should be controlled.

The laminated glass 2 may be any of a single-paned tempered glass, a semi-tempered glass and an untempered glass.

[0038]

According to the present invention, unnecessary laminated glass can be crushed, separated into glass pieces and intermediate film pieces, and the recovered pieces can be reused, so that resources can be effectively used.
It is also an environmental measure.

[Brief description of the drawings]

FIG. 1 is a side view of a crushing device of the present invention.

FIG. 2 is a cross-sectional view of a laminated glass.

FIG. 3 is a cross-sectional view of an intermediate film piece having a glass piece attached thereto.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crusher 2 Laminated glass 3 Glass piece 4 Intermediate film piece with glass piece attached 5 Intermediate film piece 6 Vibrating sieve 7 Cullet box 8 Intermediate film collection box 10 First stage crusher 20 Second stage crusher 11, 21 Cylindrical Casing 12, 22 Hammer 13 Input port 14 Connection port 23 Discharge port

Claims (2)

[Claims] 1. A plurality of hammers rotatable at high speed inside a cylindrical casing having upper and lower openings, and a lower opening of a first-stage crusher and an upper opening of a second-stage crusher are connected in series. To the upper opening of the first-stage crusher, and into the upper opening of the second-stage crusher connected to the lower opening of the first-stage crusher. A connection port for delivering a mixture of the piece of the intermediate film and the piece of glass to which the glass piece adheres, a slit-shaped outlet for discharging the mixture of the piece of glass and the piece of intermediate film to the lower opening of the second-stage pulverizer, A vibrating screen having a mesh provided at the lower part of the discharge port, and a mixture of the glass piece and the intermediate film piece dropped on the vibrating mesh is separated into a glass piece and an intermediate film by the operation of the vibrating screen. Separates and collects glass and interlayer from laminated glass Equipment to do. 2. The laminated glass according to claim 1, wherein a slit interval of a discharge port of the second-stage crusher is smaller than a slit interval of a connection port serving as a discharge section of the first-stage crusher. A device that separates and collects glass and an intermediate film.