KR102439687B1 - Waste glass recovery method for manufacturing glass bead - Google Patents

Abstract

The present invention particularly relates to a waste glass recovery method for manufacturing glass beads for road signs, and more particularly, by recovering waste glass such as automobile waste glass, solar waste glass, and general cullet, and impurities contained in the glass. It relates to a waste glass recovery method for the production of glass beads designed to manufacture glass beads by sorting and removing them and recovering them.

Description

Waste glass recovery method for manufacturing glass beads

The present invention particularly relates to a waste glass recovery method for manufacturing glass beads for road signs, and more particularly, by recovering waste glass such as automobile waste glass, solar waste glass, and general cullet, and impurities contained in the glass. It relates to a waste glass recovery method for the production of glass beads designed to manufacture glass beads by sorting and removing them and recovering them.

In general, glass beads for road signs are mixed and applied in the paint for lanes, or by spraying immediately after the paint for lanes is applied on the road before curing, so that the light can be reflected by the glass bead, making this visible.

As an example of the prior art related to the apparatus for manufacturing such a glass bead, as suggested in Korean Patent Registration No. 10-0232478, it consists of an upper body and a lower heating part, and the lower heating part has several gas burners and a material (glass powder) inlet. The glass powder injected into the material inlet rises toward the body by the powerful flame of the gas burner, melts at a high temperature of about 1,000°C to 1,100°C to form a bead, and after the beading is completed in the body, it is placed in the lower part of the outer side of the body. It is manufactured by falling to the formed discharge part and collecting it into a collection container.

As described above, glass beads are manufactured using glass. Recently, a method of using waste glass to recycle resources has been proposed, and in general, such waste glass contains additives ( Impurities) are different, so only glass must be separated and recovered in different ways, and it can be largely divided into automobile glass, glass used for solar panels, and other cullet.

As an example, the glass used in the solar panel, that is, the solar cell using the solar panel is generally formed in a sandwich structure of tempered glass / encapsulant (EVA) / cell (silicon) / encapsulant (EVA) / back sheet. , Ethylene vinyl acetate (EVA) is used as an interlayer encapsulant.

In order to reuse a solar cell having this structure, it is economical to completely separate each layer by removing the EVA component used as an encapsulant.

As prior art to which the organic solvent method is applied, Korean Patent Application Laid-Open No. 10-2011-0031688 and Korean Patent Application Laid-Open No. 10-2012-0000148 are disclosed.

However, the organic solvent method and the nitric acid method require long-term treatment of 10 to 20 days and 25 hours, respectively, there is a secondary environmental pollution factor in the process waste solution generated during the process, and the recovered solar cell is separated from the EVA swell during separation. There is a problem of damage due to the ring (inflation) phenomenon.

In addition, the thermal decomposition method and the fluidized bed combustion method require high temperature conditions of 520 and 450 ° C or higher, respectively, so that harmful gases such as NOx are generated during the process, and the encapsulant (EVA) surrounding the solar cell is glass/encapsulant (EVA)/cell It is thermally decomposed at a temperature of 450 or higher in a closed space of CO, CO2 and VOCs, and the generated gas is ejected to a relatively weak cell and at the same time the cell is damaged.

Therefore, in recent years, there is a need for the most efficient recovery method suitable for each use.

Therefore, the present invention has been devised to solve the above problem,

An object of the present invention is to provide a waste glass recovery method in which the waste glass can be used in manufacturing glass beads by removing the back sheet and the encapsulant of the waste glass.

In particular, an object of the present invention is to provide a waste glass recovery method designed to improve the removal efficiency and work efficiency by heating and removing the back sheet and the encapsulant over a second time at different temperatures.

Furthermore, an object of the present invention is to provide a waste glass recovery method capable of improving efficiency by designing the back sheet and the encapsulant of the waste glass to be removed by heat using a direct heating method, an indirect heating method, or a mixture thereof.

Another purpose is to provide a waste glass recovery method designed to classify waste glass into automobile glass, solar panel and other cullet, and recover waste glass by using the method most suitable for each characteristic. .

Ultimately, it aims to achieve environmental recycling recycling by stably and cost-effectively recovering automotive waste glass and solar waste glass, which are environmental problems, and manufacturing glass beads using this waste.

In order to achieve the above object, the waste glass recovery method according to the present invention is

separating the backsheet by first heating the frame-separated waste glass;

secondly heating the waste glass from which the back sheet is separated to evaporate and remove the encapsulant in the waste glass;

It is characterized in that it comprises a.

As described above, the waste glass recovery method according to the present invention is

When the solar waste glass is crushed, it is effective to ensure that EVA and polysilicon are reliably separated and removed through secondary heat treatment through low and high temperatures.

In addition, by manufacturing glass beads using this waste, environmental recycling can be expected.

1 and 2 are schematic views of the solar waste glass recovery unit used in the waste glass recovery method according to the present invention
Figure 3 is a photograph of the heat treatment member used in the solar waste glass recovery unit according to the present invention
Figure 4 is a process block diagram of recovering solar waste glass in the waste glass recovery method according to the present invention
Figure 5 is an embodiment using the rack used in the solar waste glass recovery unit according to the present invention
6 is a photograph of each step of the waste glass separated by the recovery method according to the present invention;
7 is an embodiment of a rack used in the solar waste glass recovery unit according to the present invention
Figure 8 is an embodiment of the press used in the solar waste glass recovery unit according to the present invention
9 is an embodiment of a vehicle waste glass recovery method among the recovery method according to the present invention;
10 is a process diagram of manufacturing a glass bead through the waste glass recovered by the waste glass recovery method according to the present invention;
11 is a schematic block diagram of a waste glass recovery method according to the present invention;
12a and 12b is a modified example of the waste glass recovery method according to the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference sign, particularly the number of the tens and one digit, or the reference numerals having the same tens, one, and alphabet, indicates a member having the same or similar function, and unless otherwise specified, each of the figures in the drawings The member indicated by the reference sign may be understood as a member conforming to these standards.

In addition, in each drawing, in consideration of the convenience of understanding, the size or thickness is exaggeratedly large (or thick) small (or thin) or simplified, but the protection scope of the present invention is limited by this. it shouldn't be

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In general, waste glass used in manufacturing glass beads for road signs using recycling of waste glass has a refractive index of 1.50 to 1.65 and a retroreflection performance of 0.5 to 1.5. However, not all types of waste glass can be recycled, but types of glass that can satisfy the applicable conditions, that is, general cullet such as glass windows and industrial glass, automotive waste glass, and solar waste glass must be used. . That is, in this embodiment, waste glass for automobiles and waste glass from solar power, which are currently environmental problems, are recovered stably and cost-effectively, and glass beads for paint cover are manufactured using these wastes to achieve environmental recycling recycling. want to

To this end, the present invention in the waste glass recovery method (M), each type of waste glass using a cullet recovery unit (A1), a vehicle waste glass recovery unit (A2), and a solar waste glass recovery unit (A3) We will try to recover it in the most suitable way.

First, although not shown in the drawings, the cullet recovery unit (A1) uses a jaw crusher or a hammer crusher that is generally used for cullet such as an input glass window, industrial glass, etc., and has a preset particle size It is crushed to size so as to be recovered by a glass bead manufacturing unit to be described later, which is a known technique in the prior art, and a detailed description thereof will be omitted.

1 and 2 show a schematic configuration of the solar waste glass recovery unit (A3), which is disposed to be spaced apart from the cullet recovery unit and crushed the solar waste glass (G) inputted at low and high temperature 2 It is to recover the solar waste glass having a preset particle size by heating it over a period of time, and the process is as shown in FIG. ) (Ethylen Vinyl Acetate) separation step (M3).

1 and 2 and 4, in detail with the configuration of the solar waste glass recovery unit A3 for each process, first to remove the frame GF attached to the solar waste glass A frame removal unit A31 is provided.

The frame removal unit A31 separates the photovoltaic waste glass stacked in a plurality of layers, more precisely, the aluminum (Al) frame GF attached to the PV (Photovoltaic) panel.

The waste glass G from which the frame GF is removed in the frame removal unit A31 is transferred to the heating unit A33 through the conveyor unit A32.

The heating part (A33) is provided with a heating member (F) to apply heat to the waste glass (G) input to the heating member (F), the heating member (F) is a furnace as shown in FIG. It may be made of any one of a vacuum furnace, a nitrogen / argon furnace, and a general furnace, and the scope of rights should not be construed as being limited thereto.

The present invention is characterized in that the back sheet (BS) and the encapsulant (EVA) contained in the waste glass (G) are heated to different temperatures to separate them in stages. For this purpose, the heating unit (A33) has two It is preferable that each heating member (F) is provided, but it is also possible to introduce a single heating member (F) and set it to different temperatures with the intervention of the operator, and this should not be interpreted as limiting the scope of the right.

In the drawing, for the convenience of operation, the heating unit A33 is composed of a first heating unit A331 and a second heating unit A332, and each of the first heating unit A331 and the second heating unit A332 is Examples of configuring each of the heating members (F) are shown.

Again, the present invention proceeds to the step (M2) of separating the back sheet (BS) through the first heating unit (A331), and by heating the waste glass (G) through the second heating unit (A332) secondarily to the encapsulant The step of evaporating and removing (M3) proceeds.

More specifically, the first heating unit A331 removes the back sheet attached to the solar waste glass by applying a preset low temperature heat to the solar waste glass.

The low-temperature heat applied by the first heating unit is set to 100 to 250 ° C. The adhesive used for the back sheet is a high-durability polymer adhesive such as a polyurethane two-component adhesive, and in the case of these polymer adhesives, If the adhesive force is not lowered using high temperature, it becomes difficult to separate the back sheet from the first heating unit, so there may be differences depending on the age of the solar waste glass. 1 The temperature of the heating part must be maintained at least 100 ℃ or higher, and in the case of a composite adhesive that is resistant to temperature changes and does not hydrolyze well, it can be separated at 200 ℃ or higher, so effective removal of the backsheet adhesive is difficult. in order to make it happen

In addition, for convenient separation of the backsheet, the flash point of EVA is 260° C. The low-temperature heat applied by the heating unit is preferably set to 100 to 250 °C.

In the first heating unit A331, in order to more effectively separate the back sheet BS, a direct heating method using a press P provided with a heating wire PL is used, or an indirect heating method using infrared or a hot air blower is used. Alternatively, it is preferable to use a mixture of two or more of these methods to shorten the rate of heat treatment.

Specifically, in order to minimize the heat loss of the heating member (F), the temperature of the back sheet is increased as much as possible by linking the press (P) equipped with the heating wire (PL), and then the waste glass is put into the furnace, At this time, in order to prevent the back sheet from sticking to the press, the heating wire provided in the press is preferably set to 100 to 250° C., which is a temperature that can minimize the adhesive force. (Same as the press used in the second heating unit. Therefore, it will be described in more detail below.)

Second, the infrared heating method is used to quickly heat only the back side of the solar panel so that the back sheet with poor adhesion can be easily separated. , it is preferable to heat for 30 to 300 seconds so that the surface temperature of the back sheet becomes 100 to 250 °C.

Lastly, the method of using a hot air blower applies hot air to the back sheet in the airtight facility, and at this time, the temperature is also heated to a temperature of 100 to 250 ° C., but the hot air is set so that only the back sheet is directly applied to preferentially heat the adhesive to the furnace. heat loss can be minimized.

The second heating unit A332 removes the encapsulant (EVA) and the cell (silicon) attached to the waste glass by applying high-temperature heat to the waste glass from which the back sheet is removed by the first heating unit.

[Table 1]

The heat applied by the second heating unit A332 is set to 350 ~ 700 ℃.

As shown in [Table 1], the vaporization point of EVA, which is the most important component to be treated through the second heating unit, is about 300 to 350 ° C, and the point at which the weight is completely reduced is about 550 ° C. Looking at the results in Table 1], the initial temperature to reduce the weight and decrease the adhesion of EVA is around 350 °C, and the temperature to completely reduce the weight is around 550 °C. , the high-temperature heat applied by the second heating unit is preferably set to 350 ~ 700 ℃.

In addition, in order to prevent heat loss of the heating member (F) in the second heating unit (A332), a rack (L) or a heating wire (PL) into which the waste glass is inserted is provided with a heating wire (PL) for the waste glass. A direct heating method of direct heating using a press P, an indirect heating method using infrared or hot air, or a mixture of two or more of these may be used.

Specifically, when a rack equipped with a function for heating by transferring heat energy by the heating wire or other method is bound to the waste glass and heated to a temperature of 350 to 700° C. using the heating member, heat is transferred through the rack As direct heating to waste glass is paralleled, energy loss can be minimized, and since it can be laminated on the heating member in multiple layers, it is possible to work with a large amount of waste glass, and EVA evaporation by firmly fixing the waste glass It is possible to prevent damage to waste glass due to impact or thermal shock.

As shown in FIG. 7, the rack (L) is a grid-like network in which a plurality of pores (L4) are formed, an upper rack (L1) and a lower rack (L2), and the upper rack (L1) and the lower rack ( It may consist of a connecting bar L3 connecting L2), and a hot wire PL is provided on the upper rack L1 or the lower rack L2 or both of them, so that the waste glass G is connected to the waste glass G through the hot wire PL. Direct heat transfer can increase work efficiency.

In particular, for the complete recovery of the waste glass, the pore portion L4 is formed to prevent the waste glass from being damaged due to the pressure of the evaporated EVA, and further, to effectively circulate the waste glass.

In addition, it is preferable that the processing time through the heating member after coupling to the rack (L) is set to about 0.5 to 5 hours.

In addition, the upper rack (L1) and the connecting bar (L3) and the lower rack (L2) and the connecting bar can be easily and detachably fixed by a fixing block unit (B) to be described later, which is shown in Figs. 11a and 11b Therefore, it will be described in more detail below.

In addition, as another direct heating method, the waste glass is heated directly by using a press (P) equipped with a heating wire as used for the removal of the back sheet, and the EVA is evaporated using contact heat to reduce energy loss and increase the processing speed. It can be increased (see Fig. 8).

In addition, when the press (P) is closely attached to the waste glass, the waste glass can be firmly fixed, thereby preventing the damage of the waste glass due to the EVA evaporation shock or thermal shock. A groove for exhaust must be formed, which can be solved by configuring the contact surface P1 of the press P, that is, the surface in close contact with the waste glass, not a flat surface, but a surface on which the wrinkle portion P2 is formed.

Specifically, it is preferable that the groove formed in the wrinkle part has a depth of 0.1 to 10 mm and a width of 1 to 30 mm, and an interval between the exhaust passages is formed to a width of 5 to 30 mm.

Furthermore, an indirect heating method using infrared rays and a hot air blower used in the back sheet removal step (M2) may be used.

Figure 5 [A] is a view showing a process in which the back sheet is separated through the above process, Figure 5 [B] and Figure 5 [C] is a process of inserting the waste glass into the rack to apply secondary high-temperature heat. is shown,

6 [A] is a photograph of the waste glass from which the frame is removed before the back sheet is removed, and FIG. 6 [B] is a photograph of the waste glass from which the back sheet and EVA are removed after the second-stage heat treatment, 6[C] is a photograph of the waste glass with cells removed from the photograph of FIG. 6[B].

In addition, the solar waste glass recovery unit (A3) is further provided with a crushing unit (A34) to wash and chemically wash the solar waste glass, crush it to a preset particle size, and put it into a glass bead manufacturing unit to be described later. make it possible

The vehicle waste glass recovery unit A2 crushes the input vehicle waste glass, and removes a film generated by being separated from the vehicle waste glass during crushing to recover only the automotive waste glass having a preset particle size.

As shown in FIG. 9, the vehicle waste glass recovery unit A2 includes a crushing unit A21, a conveyor transfer unit A22, a blower unit A23, and a drum screen unit A24.

First, the crushing unit A21 is used in the crushing step of the vehicle waste glass to be crushed by physically applying pressure to the input vehicle waste glass.

The crushing unit A21 consists of a general jaw crusher or a hammer crusher, and repeatedly crushes the inputted vehicle waste glass.

The conveyor transfer unit A22 is formed to move the vehicle waste glass shredded by the crusher A21 along the recovery path, and is inclined upward. (Transferring the crushed waste glass upward)

Preferably, the conveyor transfer unit (A22) is spaced apart from each other and arranged in one or more pairs so that a step can be formed between adjacent conveyor transfer units.

And the blower unit (A23) is disposed on the conveyor transfer unit (A22), more specifically in the spaced space between the pair of conveyor transfer units (A22), and transmits a strong wind toward the falling automobile waste glass, automobile waste glass The PVB (Polyvinyl Butyral) film separated in the process of pulverization through the pulverizing unit in the attached state is blown away by a strong wind, and at this time, the vehicle waste glass falling by its own weight is formed to be separated primarily by gravity sorting. (1st screening stage)

In addition, the drum screen unit (A24) is disposed at the ends of the pair of conveyor transfer units, and is formed to secondarily separate the PVB film remaining in the vehicle waste glass separated primarily through the blower unit through rotation, at this time the separated PVB The film may be collected in a separate box or hopper or the like.

The vehicle waste glass recovery unit may be provided in two or more so that each process can be repeated a plurality of times in order to improve the separation performance of the PVB film, and the scope of the rights should not be limited thereto.

The cullet recovery unit, the vehicle waste glass recovery unit and the solar waste glass recovery unit according to this embodiment collect cullet, automotive waste glass, and solar waste glass having the same preset particle size along different paths, respectively. After that, they are assembled together in a glass bead manufacturing unit for manufacturing glass beads and undergo the following process (see Fig. 10).

The glass bead manufacturing process (GM) is performed by the glass bead manufacturing unit, largely mixing (GM1), melting (GM2), fractionation (GM3), cooling (GM4), washing (GM5), drying (GM6) , it goes through a screening (GM7) step.

Here, it is preferable that the particle size of the waste glass input to the glass bead manufacturing unit, that is, the cullet, automobile waste glass, and solar waste glass processed through a plurality of processes is preset to 0.3 to 2 mm.

This is the KS particle size standard for glass beads currently designated by the government, which is 850 um, 600 um, 300um, 106 um sieve for A1 of KS L 2521: 2017, and 600 um, 300 um, 150 um sieve for No.1 No.1. It is composed based on the ratio remaining in each sieve using This is because stable production is possible during the glass bead manufacturing process after sieving in

In this way, when cullet, automobile waste glass, and solar waste glass having a preset particle size are collected together with the glass bead manufacturing unit, through processes such as water washing and chemical cleaning (using Toluen, MEK, DMC, etc.) After removing impurities from each crushed waste glass, glass beads are manufactured at once through the following melting process and blowing/cooling process.

More specifically, the waste glass from which impurities are removed is mixed through a mixing step, and when the mixed waste glass is moved along a recovery path and put into a furnace, the crushed waste glass is melted by heat to form beads. (melting stage)

The beads formed by the melting step are classified through a vibrating feeder, and the classified beads are cooled by using a cooling jacket or the like in a blower/reactor cooling unit.

Specifically, the beads form a circular shape while swimming inside the reactor, and if they are not cooled quickly or are produced with latent heat and then go to the storage warehouse, the glass beads collide with each other and stick to each other, crushed, or pressed by the weight Since defective products are often generated due to the above, it is necessary to provide a cooling jacket or use a cooling spiral to the cooling part of the reactor in order to solve this problem.

And in this embodiment, a water-cooled cooling unit, more specifically, a water-cooled jacket, is provided in the reactor cooling unit in order to increase cooling efficiency in the blowing/cooling step and reduce the amount of power used for the blower, and to circulate groundwater or external By connecting the water supply in connection with the cooling tower, the bead with the molten surface can be cooled while rapidly changing into a spherical shape, thereby reducing the defect rate of the glass bead and minimizing the cooling cost.

In addition, by providing a thermoelectric element on the surface of the reactor cooling unit to cool the inside and heat the outside, and to maximize cooling efficiency by forming irregularities on the surface of the reactor, it is possible to efficiently reduce the power cost and water supply cost for cooling. may be

When the cooling step is completed as described above, the bead is washed once again to remove impurities on the surface, and a drying step of drying the remaining water by washing is performed, and then the beads are subjected to a screening process of selecting defective products among the manufactured beads. will produce

In the present invention, when cullet, automobile waste glass, and solar waste glass are respectively recovered through a plurality of processes as described above, and glass beads for road signs are manufactured using the recovered waste glass (see FIG. 11), PVB Since the glass beads are manufactured in a state in which the encapsulant (EVA) and polysilicon are reliably separated and removed through heat treatment together with the film, lead (Pb), arsenic (As), and antimony (Sb) are not detected. and can effectively satisfy the appearance, particle size, and performance (refractive index and retroreflection performance) of glass beads that meet the standard values for manufacturing glass beads for coatings.

[Table 2]

In addition, for the manufacture of glass beads for road signs, automobile waste glass, solar waste glass, and general cullet (glass window, industrial glass, etc.) are crushed and separated through different processes to produce 0.3 for road sign glass beads. By recovering to a particle size of 2 mm to 2 mm, it has the effect of minimizing the defect rate due to the manufacture of the glass beads for the paint cover and at the same time allowing the refractive index and retroreflection performance to meet the standard values.

Furthermore, the present invention improves the separation performance of PVB film, etc. by installing a plurality of blowers and a conveyor with a drop when crushing automotive waste glass, and when crushing solar waste glass, EVA and polysilicon through secondary heat treatment at low and high temperatures By ensuring that the etc. are separated and removed, lead (Pb), arsenic (As), and antimony (Sb) can be prevented from being detected when manufacturing glass beads for road signs using automotive waste glass and solar waste glass.

Further, Figure 12a and Figure 12b shows a modified example according to the present invention,

The upper rack (L1) and the connecting bar (L3) and the lower rack (L2) and the connecting bar are easily and detachably coupled by a fixed block unit (B) to be described later.

In the fixed block unit (B), the first block (B1) and the second block (B2) are coupled to each other, and when the upper rack (L1) and the connecting bar (L3) are coupled, the first block (B1) is the upper part It is provided on the rack (L1) and the second block (B2) is provided on the connecting bar (L3), and when the lower rack (L2) and the connecting bar (L3) are combined, the first block (B2) is attached to the connecting bar (L3) B1) must be provided and the second block (B2) must be provided on the lower rack (L2),

More preferably, after the connection bar (L3) is fixed to the lower rack (L2) by welding, etc., the upper rack (L1) is coupled to the connection bar (L3) through the fixing block unit (B) It is good to do, and the fixed block unit will be described below based on this embodiment.

The fixed block unit (B) is provided in the first block (B1) provided in the upper rack (L1) and the connecting bar (L3), as shown in Figure 12, the first block (B1) is introduced A second block B2 having an inlet hole B21 formed therein, a pair of fixed arms B14 provided in the first block B1 and fixed by protruding into a fitting groove B22 formed in the inlet hole B21, and The first block (B1) rises and lowers inside, and the pair of fixed arms (B14) includes an elevating rod (B13) for limiting the retraction.

Accordingly, when the first block B1 enters the inlet hole B21, the elevating rod B13 descends to protrude the pair of fixed arms B14 to both sides, so that the fixed arms B14 ) is inserted into the fitting groove (B22) to fix the first block (B1) to the second block (B2),

The lowered elevating rod (B13) is positioned between the pair of fixed arms (B14) so that the fixed arms (B14) limit the retraction so that the first block (B1) and the second block (B2) are in a fixed state. keep,

The lower portion of the first block (B1) is provided with a return member (B16) in close contact with the lower surface of the elevating rod (B13) and including a return spring (B163),

When the return member B16 hits the lower surface of the elevating bar B13 by the elastic force of the return spring B163 to raise the elevating bar B13, the fixed arm B14 is allowed to retreat and the The first block (B1) is characterized in that it is made to be separated from the second block (B2).

Each configuration will be described in more detail with reference to FIGS. 12A and 12B , and [A] of FIG. 12A shows a schematic view in which the fixed block unit B is installed, and in FIG. 12A [B], [C], [D], [E], and [F] of FIG. 12B sequentially show the operation of coupling the first block (B1) to the second block (B2), For convenience, reference numerals are shown only in FIG. 12A, and in the remaining drawings, reference numerals refer to FIG. 12A with the same configuration.

First, describing the second block B2, as shown in [A] and [B] of FIG. 12A , the connecting bar L3 is coupled to protrude to one side, and the upper and lower open inlet holes B21 is formed, and fitting grooves B22 are formed on both sides of the inlet hole B21 so that a fixing arm B14 to be described later can be interpolated.

In the interior of the first block (B1), a moving space (B11) in which the elevating rod (B13) to be described later can move up and down is formed inside along the longitudinal direction of the first block (B1). And, the upper portion of the moving space (B11) is made to communicate with the elevating space (B126) having a wider space than the moving space (B11).

In addition, although not shown in the drawings, the first block (B1) is preferably manufactured in such a way that it is composed of two powders, an upper and a lower powder, and coupled to each other in order to assemble the components inside, but the scope of the rights is limited It should not be construed as limiting.

Again, the moving space (B11) is a space in which the elevating rod (B13) elevates and descends, and the elevating space (B126) is a space in which the pull-up member (B12) to be described later elevates and descends, and the moving space ( A stopper B111 protruding inward to limit the rise of the elevating rod B13 is formed on the upper portion of B11), and the lower portion of the moving space portion B11 is lowered by a return member B16 to be described later. A lower step limiting the is further formed.

The elevating rod (B13) is made of metal that is affected by magnetism, and the upper part is flat and the lower part has an entry point (B131) so that it can descend while spreading the fixed arm (B14) to be described later. On both sides of the pointed portion (B131), a gentle slope portion (B132), which has a gentler inclination than the entry point portion (B131), is formed to secure a space so as not to interfere with the retracting operation of the fixed arm (B14), which will be described later. .

Again, the fixed arms (B14) are made of a pair so as to protrude to both sides of the first block (B1), and spring support wings (B141) are formed on both sides of each of the fixed arms (B14). A second spring (B143) supporting the wing (B141) is provided so that, as shown in FIG. 12a[B], the fixed arm (B14) has an elastic force that can be drawn into the inside of the first block (B1) in normal times.

In addition, the entrance guide inclined portion (B142) is formed on the inner upper portion of the fixed arm (B14) so that the elevating rod (B13) can easily enter.

A pull-up member (B12) is further provided on the upper portion of the first block (B1), the pull-up member (B12) is provided in the elevating space (B126) to enable up-and-down elevating movement, the magnet body (B121) and a pull-up handle (B122) provided on both sides of the magnet body (B121) and protruding from both sides of the first block (B1), and a first spring (B123) on the upper part of the magnet body (B121) The pull-up member (B12) is provided with an elastic force that can be pushed downward, and the pull-up handle (B122) is further formed with a line coupling portion (B122a) to which a pull-up line (B124) to be described later is coupled. .

In addition, the present invention is further provided with a rotation stopper (B15) for limiting the arbitrary rise of the elevating rod (B13), the rotation stopper (B15) is a first elastic hinge portion on both sides inside the first block (B1) A stopping body (B151) rotatably provided through (B154) and a second elastic hinge part (B155) are hinged to the stopping body (B151) to invade the moving space (B11). It consists of a protruding stopping leg (B152).

At this time, the stopping leg (B152) is characterized in that it is a limited rotation type member that can be rotated only in the downward direction with respect to the stopping body (B151).

In addition, a pull-up line (B124) connecting the second elastic hinge part (B155) and the pull-up handle (B122) of the pull-up member (B12) is further provided. A line space portion B125 is further formed inside the block B1. At this time, as shown in the drawing, the pull-up member B12 and the pull-up line B124 are provided on both sides with respect to the elevating bar B13, respectively. Although not shown in the drawing, the first elastic hinge The branch B154 may also be further provided with a coil spring for rotating the pull-up member B12 downward as in the shape of FIG. 12a [B], but this should not be interpreted as limiting the scope of the right.

A return member B16 is further provided at the lower portion of the first block B1, and the return member B16 has the same shape so that the entry point B131 of the elevating rod B13 is interpolated. A return body (B161) having a sub-accommodating groove (B161a) formed therein, a return handle (B162) provided under the return body (B161) to protrude to a lower portion of the first block (B1), and a lower portion of the return body (B161) and a return spring (B163) provided to extrapolate the return handle (B162) in made to be possible

Hereinafter, the operation of the fixed block unit (B) configured as described above will be described in more detail with reference to the drawings.

First, as shown in Figure 12a [B], before the first block (B1) and the second block (B2) are coupled, the pull-up member (B12) fixes the elevating rod (B13) by magnetic force to the elevating and lowering Bongdol (B13) is located on the upper portion of the moving space (B11).

After that, after inserting the first block B1 into the inlet hole B21, as shown in FIG. 12a[C], when the user holds the pull-up handle B122 and raises the pull-up member B12, the The descending rod (B13) is not allowed to ascend by the stopper (B111), and as the magnet body (B121) and the ascending and descending block move away from each other and the magnetic weakens, the ascending and descending rod (B13) descends by its own weight. .

At this time, the rotation stopper B15 rotates while the pull-up line B124 is pulled so that the stopping leg B152 invades the moving space part B11. ] does not interfere with the descent of the elevating rod (B13) as it can be rotated in the same direction.

When descending by the weight of the elevating rod (B13), the entry pointed portion (B131) passes between the entrance guide inclined portion (B142) of the pair of fixed arms (B14) and the pair of fixed arms (B14) The first block B1 is advanced to both sides, and as shown in FIG. 12B [D], the fixed arm B14 is inserted into the fitting groove B22 in the second block B2, and between the pair of fixed arms B14. The elevating rod (B13) is located on the first block (B1) can be firmly fixed to the second block (B2) by disallowing the retreat of the pair of fixed arms (B14).

To explain this in more detail, when the elevating bar B13 descends, as shown in [D] of FIG. 12b , the return member B16 is pressed from the upper portion to lower it slightly, and then, as shown in [E] of FIG. 12b When the force due to the acceleration of gravity disappears, it partially rises by the elastic force of the return spring B163 of the return member B16, and the stopping leg B152 of the rotation stopper B15 is placed on the upper part of the elevating bar B13. It is in close contact with the ascending and descending rod (B13) to limit the arbitrary rise.

That is, through the state as in [D] of FIG. 12b, a space is secured in which the folded stopping leg B152 is unfolded again as shown in [C] of FIG. 12a, and the elevating and descending as shown in [E] of FIG. 12b It is possible to secure the fixing force by supporting the upper portion of the bongdol (B13).

In order to release the first block B1 from the second block B2, the lower end of the return body B161 of the return member B16 is in close contact with the lower stepped portion B112, as shown in [F] of FIG. 12B. If you hold and pull the return handle (B162) until then, the elevating rod (B13) descends together by its own weight. Hit the bar B13 upwards, and while the elevating bar B13 rises, it is attached to the magnet body B121 of the pull-up member B12 by magnetic force. The block (B1) is made to be easily pulled out from the second block (B2).

That is, by the above configuration, the first block (B1) and the second block (B2) have a feature that can be combined, fixed, maintained, and separated more easily.

In addition, in the above description of the present invention, with reference to the accompanying drawings, the waste glass recovery method for manufacturing glass beads having a specific shape, structure and configuration has been mainly described, but the present invention can be variously modified, changed and replaced by those skilled in the art. and such modifications, changes and substitutions should be construed as falling within the protection scope of the present invention.

M: Waste glass recovery method M1: Frame separation step
M2: Backsheet separation step M3: Encapsulant separation step
GM: Glass bead manufacturing process GM1: Mixing step
GM2: Melting stage GM3: Classification stage
GM4: Cooling stage GM5: Washing stage
GM6: Drying stage GM7: Selection stage
A1: cullet recovery unit A2: automotive waste glass recovery unit
A21: Crushing part A22: Conveyor transfer part
A23: Blower part A24: Drum screen part
A3: Solar waste glass recovery unit A31: Frame removal unit
A32: Conveyor A33: Heating Unit
A331: first heating unit A332: second heating unit
A34: crushing part
F: heating element
P : Press PL : Heat wire
P1 : contact surface P2 : wrinkle part
L : Rack L1 : Upper Rack
L2 : Lower rack L3 : Connection bar
L4 : pore
G : Waste glass BS : Back sheet
C: cell

Claims (4)

separating the backsheet by first heating the frame-separated waste glass;
and the second heating of the waste glass from which the back sheet is separated to evaporate and remove the encapsulant in the waste glass;
A step of separating the back sheet in a waste glass recovery unit including a frame removing unit and a heating unit in which the frame is separated before the step of separating the back sheet, the heating unit having first and second heating units, and separating the back sheet by the first heating unit is in progress, and the second heating unit heats the waste glass a second time to evaporate and remove the encapsulant,
The first heating unit is configured using a direct heating method using a press equipped with a heating wire, or an indirect heating method using infrared rays or a hot air blower,
The second heating unit is configured to directly heat by using a rack provided with a heating wire and into which waste glass is inserted, and the rack is a grid-type network in which a plurality of pores are formed, an upper rack and a lower rack provided with a heating wire, and both It consists of a connecting bar that connects the
The upper rack is detachably connected through a connecting bar and a fixed block unit, and the fixed block unit is coupled to each other and is composed of a first block provided in the upper rack and a second block provided in the connecting bar, and the second block is the first block. There is an inlet hole through which the block enters,
The first block includes a pair of fixed arms that protrude and are fixed through a fitting groove formed in the inlet hole, and an elevating bar stone that limits the retreat of the fixed arm. The first and second blocks are fixed by being inserted into the fitting grooves while protruding from both sides, and the descending elevating bar is positioned between the fixed arms to limit the retreat of the fixed arms,
The lower portion of the first block is provided with a return member in close contact with the lower surface of the elevating bar and including a return spring, and the return member hits the lower surface of the elevating bar by the elastic force of the return spring to raise the elevating bar. Retraction of the fixed arm is made so that the first and second blocks are separated,
In the first block, a moving space in which the elevating bar moves up and down, and an elevating space in which the pull-up member elevates and lowers, which is wider than the moving space, are communicated at the upper part of the moving space, and the elevating bar is affected by magnetism. It is made of iron and has an entry point having a gentle slope on both sides at the bottom, and each of the pair of fixed arms has a spring support wing supported by a second spring, and has an entrance guide slope on the inner upper part,
The first block further includes a magnet body having pull-up handles on both sides, a pull-up member having a first spring on the magnet body upper portion, and a rotation stopper for limiting the arbitrary rise of the elevating rod, and The rotation stopper includes a stopping body rotatably provided on both sides of the inside of the first block through a first elastic hinge, and a stopping leg that is hinged to the stopping body through a second elastic hinge and protrudes toward the moving space. and a pull-up line connecting the second elastic hinge part and the pull-up handle of the pull-up member and located in the line space inside the first block, the pull-up member and the pull-up line are provided on both sides of the elevating bar,
The return member includes a return body having a pointed portion accommodating groove for interpolating the entry point of the elevating bar, a return handle provided under the return body to protrude to the lower portion of the first block, and the return handle from the lower portion of the return body Waste glass recovery method comprising a return spring provided for extrapolation. The method of claim 1,
Separating the back sheet is a waste glass recovery method, characterized in that by using the heat set at a temperature of 100 ~ 250 ℃ in the first heating unit to heat the waste glass. 3. The method according to claim 1 or 2,
The step of evaporating the encapsulant is a waste glass recovery method, characterized in that by using the heat set to a temperature of 350 ~ 700 ℃ in the second heating unit to heat the waste glass. 4. The method of claim 3,
The lower rack of the second heating unit is detachably connected through a connecting bar and a fixed block unit, and the fixed block unit is coupled to each other and is composed of a first block provided on the connecting bar and a second block provided on the lower rack. How to recover waste glass.

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