JP2018143972A - Screening device and screening method of heat insulation material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recycle system which acquires a high-quality urethane fuel from urethane crushed pieces by efficiently removing core material of vacuum heat insulation material (VIP) in a disassembling recovery line of a refrigerator using the vacuum insulation material (VIP) in combination with urethane foam material.SOLUTION: In a disassembling recovery line of a refrigerator, a mechanical GW separation process composed of a classification device, a mesh conveyor and a suction part is added with respect to a light-weight material of GW lump comprising core material of the vacuum heat insulation material (VIP), urethane crushed pieces and the like acquired by performing pneumatic screening after crushing of refrigerator casing, the GW lump is deformed by pressure of an air flow produced from the suction part and is allowed to pass through the mesh conveyor, thereby, the GW lump is separated from the urethane crushed pieces and is removed, high-purity urethane crushed pieces are recovered, the urethane crushed pieces are crushed fine and are granulated and, thereby, high-quality urethane fuel is provided.SELECTED DRAWING: Figure 2

Description

  The present invention relates to glass wool (GW: Glass Wool; hereinafter referred to as GW only) used in vacuum heat insulating materials (VIP: Vacuum Insulation Panel; hereinafter referred to as VIP only) in recycling of refrigerators and the like. And the like.

  In recent years, the amount of vacuum heat insulating material (VIP) used as a heat insulating material for a heat insulating cold storage such as a refrigerator has increased due to its high heat insulating performance, and is used in a refrigerator together with a urethane foam material. VIP is made by wrapping a core material such as fibrous glass wool (GW) in a plastic bag and evacuating the inside to form a plate. The outer cover material (laminated plastic film) is torn, and the core material such as GW becomes a lump of several mm to a maximum of several cm (hereinafter, this lump may be referred to as a GW lump).

  Since the GW lump is a lightweight material, it flows into the urethane processing facility in the wind sorting process together with the crushed foamed urethane material, but the GW lump is scattered and clogged during the fine crushing process and temporary storage before and after that. May occur, resulting in equipment shutdown. Moreover, when GW lump mixes in the urethane fuel after granulation, the quality as a fuel will be impaired, such as the fall of the emitted-heat amount of a fuel. Therefore, it is necessary to separate and remove the GW mass from other lightweight processed products such as foamed urethane crushed pieces.

  Therefore, there are some which cut the outer steel plate of the refrigerator before crushing and remove the entire VIP or only the inner core material. This is a method of cutting an iron plate by vibration pushing using an auto chisel over the side and back of a refrigerator housing, and taking out the VIPs one by one (for example, see Patent Document 1).

  In addition, a method has been proposed in which the outer plate of the refrigerator is marked, and the outer plate is cut along the mark and then peeled off. This includes removing the entire iron plate at the site where VIP is present, separating the VIP together with the bag, cutting only a part of the iron plate, and sucking from the other hole while introducing air from there, There is a method of taking out only the inner core material (see, for example, Patent Document 2).

  Moreover, the technique which isolate | separates GW lump from other lightweight materials by magnetic separation using the iron powder which generate | occur | produces at a crushing process is stirred in a crushing / conveying process and mixed in GW lump is disclosed ( For example, see Patent Document 3).

JP 2006-275308 A Japanese Laid-Open Patent Publication No. 2005-69657 JP 2016-7712 A

  In the separation methods described in Patent Documents 1 and 2, since the core material is removed before the casing of the refrigerator is crushed, it is necessary to carry out the method for each refrigerator.

  The separation method described in Patent Document 3 uses the principle that the iron powder generated at the time of crushing is mixed in the GW lump and separated by magnetic sorting, so it is stable at the time of crushing the refrigerator housing. Therefore, it is necessary to supply iron powder so that it exceeds the specified amount. Therefore, there exists a subject that iron powder adsorb | sucks also on the surface of a urethane crushing piece, and purity falls.

  The present invention has been made to solve the above-described problems, and efficiently removes GW masses.

  The heat insulating material sorting device according to the present invention is a crushing and mixing heat insulating material sorting device obtained by crushing a heat insulating material containing a fiber-based heat insulating material, the conveying means for conveying the crushing and mixing heat insulating material, and the crushing and mixing heat insulating material. Suction means for sucking the fiber-based heat insulating material from the inside, and the conveying means has a space for allowing the fiber-based heat insulating material to pass therethrough, and the suction means passes the fiber-based heat insulating material through the space. It is to suck.

  According to this invention, the fiber type heat insulating material in the crushed and mixed heat insulating material can be efficiently selected after crushing the casing of the refrigerator.

It is the flowchart which showed the example of a recycling containing the screening method of the heat insulating material in Embodiment 1 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 1 of this invention. It is a figure which shows the suction opening of the screening device of the heat insulating material in Embodiment 1 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 2 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 3 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 4 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 5 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 6 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 6 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 7 of this invention. It is a figure which shows the screening device of the heat insulating material in Embodiment 7 of this invention. It is the flowchart which showed the example of recycling of the conventional used refrigerator.

Embodiment 1 FIG.
Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  Foam urethane material, which is a foam-type heat insulation material, is mainly used as a heat insulation material for a heat insulating cold storage such as a refrigerator. The foamed urethane material is pulverized and granulated and recycled to fuel. FIG. 12 is a flowchart showing a flow of taking out a urethane foam material from a conventional used refrigerator or the like and recycling it to fuel. In the figure, after a heat insulation cool storage such as a refrigerator is carried in in the first carry-in process (St01), parts such as a compressor are manually removed in the next manual dismantling process (St02). The skeleton remaining in the next crushing step (St03) is crushed to a size of several centimeters to several tens of centimeters with a crusher as a crushing means. Metals, plastics, urethane foam materials, etc. are discharged from the crusher. Next, these crushed mixed materials are separated into a lightweight material such as a foamed urethane material and a non-lightweight material such as a metal in a wind sorting process (St04).

  In the next magnetic separation process (St05), iron, which is heavy, among non-light objects, is selected using magnetic force, and other non-ferrous metals and plastics, such as specific gravity and electrostatic separation, are selected. They are sorted using a sorting device and separated into materials such as iron, non-ferrous metals, and various plastics.

  On the other hand, lightweight materials such as urethane foam are separated by the wind sorting process (St04) and then finely crushed in the fine crushing process (St11) to remove the foaming agent such as cyclopentane and the granulation process (St12). ) And then reused as urethane fuel.

  FIG. 1 is a flowchart showing a recycling method including a heat insulating material selection method according to Embodiment 1 of the present invention. With reference to the drawings, a method for selecting a heat insulating material of a heat insulating cold storage such as a refrigerator of the present invention will be described. Hereinafter, with respect to the steps that have already been described as the prior art, the steps indicated by the same reference numerals may indicate similar steps, and detailed description thereof may be omitted.

  The lightweight GW such as a urethane foam material, which is a foam heat insulating material separated by the wind sorting process (St04), is removed by the GW lump removal process (St10). In the GW lump removing step (St10), first, the GW lump is classified into about three types of large, medium, and small by a sieve sorting device. The size varies depending on the specifications of the crusher, but here, generally, the larger is φ18 mm or more, the middle is φ18 mm to 4 mm, and the smaller is φ4 mm or less. For example, among these, the GW lump is sorted from the mixture of the crushed urethane pieces and the GW lump, which is a crushed and mixed heat insulating material, by a heat insulating material sorting device described below. About small, it occupies the weight of about several to 10 several percent of the whole light weight thing, and the ratio is a mixture of urethane and GW powder of substantially the same amount. Since these are small in size and powdery, it is difficult to sort them by a heat insulating material sorting apparatus. Therefore, as indicated by the practice arrow in the figure, it is mixed with the selected GW, or, as indicated by the dashed arrow in the figure, for example, the urethane purity after separation of large and medium-sized GW souls is high and required. When there is a margin with respect to the purity of the urethane, it may be added to the separated urethane fragment side.

  Next, the urethane crushed pieces discharged from the heat insulating material sorting device are finely crushed in the fine crushing step (St11), the foaming agent such as cyclopentane is removed, and granulated in the granulating step (St12), Recycled as urethane fuel. As described above, by adding the GW lump removal step (St10) to the conventional refrigerator recycling method, the amount of GW lump mixed into the urethane treatment facility is suppressed. In the GW lump removal process (St10), it is not necessary to remove 100% of the GW lump. If approximately 80% to 90% is removed, even if a part of the GW remains, the risk of shutting down the urethane processing equipment and lowering the fuel quality Is sufficiently suppressed.

  FIG. 2 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 1 of the present invention. With reference to the drawings, description will be given of a heat insulating material sorting device for a heat insulating cold storage such as a refrigerator of the present invention. The heat insulating material sorting device is separated as a lightweight material in the wind power sorting process (St04) and classified into the same size, and then the urethane crushed piece 23, which is a foam heat insulating material, and the fiber heat insulating material at the inlet 1 The crushed mixed heat insulating material which is a mixture with the GW lump 24 which is a lump of glass wool is charged. The mesh conveyor 2 which is one of the conveying means includes a grid-like mesh portion having a predetermined size which is a space for allowing the GW mass 24 to pass through, and sequentially conveys the mixture charged from the charging port 1. The pulley 3 supports and drives the mesh conveyor 2. The suction port 4 constituting one of the suction means is provided on the lower side of the mesh conveyor 2 so as to be at least partially suckable. The fan 5 constituting one of the suction means generates an air current that allows the suction port 4 to obtain a suction force. The cyclone 6 constituting one of the suction means separates the air and the work that is a GW lump. The transport pipe 7 guides the GW block 24 sucked from the suction port 4 to the cyclone 6. The GW collection box 8 collects the GW lump 24 separated by the cyclone 6. The urethane collection box 9 collects the urethane crushed pieces 23 conveyed by the mesh conveyor 2 without being sucked from the suction port 4.

  The mixture charged from the charging port 1 is conveyed by the mesh conveyor 2 to the suction port 4 provided in a part of the lower side of the mesh conveyor 2. FIG. 3 is a diagram showing a suction port of the heat insulating material sorting apparatus according to Embodiment 1 of the present invention. In the figure, the mesh conveyor 2 has a grid length of about 15 mm square for a GW mass classified as “large”, and a grid length of about 3.5 mm square for a GW mass classified as “medium”. A conveyor having an opening. The mixture reaching the upper part of the suction port 4 is pressed against the mesh conveyor 2 by the air flow toward the lower surface side of the mesh conveyor 2. At this time, since the urethane crushed pieces 23 have a porous structure that is relatively difficult to deform, they remain on the mesh conveyor 2 without being greatly deformed even when pressed against the mesh conveyor 2.

  On the other hand, the GW lump 24 is a lump of fibrous glass fiber and has a characteristic that its shape is easily changed with respect to an external force. Accordingly, the shape of the GW block 24 changes depending on the downward pressure of the suction port 4 generated by the air flow generated in the transport pipe 7 by the wind generated by the fan 5, that is, the suction force acting on the suction port 4, for example, “ The GW soul 24 in the crushed mixed heat insulating material classified as “medium” is sucked into the suction port 4 through the mesh portion opening of about 3.5 mm square. Since a downward force due to the suction force acts on the mesh conveyor 2, support rollers 10 are provided before and after the suction port 4 so that the mesh conveyor 2 is not easily driven by friction with the suction port 4. It has been.

  The suction port 4 has an elongated shape that can cover the entire area of the mesh conveyor 2 in the width direction so that suction can be performed regardless of the position of the GW lump 24 in the width direction on the mesh conveyor 2. The GW lump 24 sucked from the suction port 4 passes through the transport pipe 7 and is carried to the cyclone 6. Therefore, the air and the GW lump 24 are separated, and the GW lump 24 is collected in the GW collection box 8. On the other hand, the urethane crushed pieces 23 left on the mesh conveyor 2 without being sucked from the suction port 4 are transported as they are, and are collected by the urethane collection box 9 provided at the end of the mesh conveyor 2. The urethane crushed pieces 23 collected in the urethane collection box 9 are crushed as they are in the next pulverization process in the urethane treatment equipment, and after removing the foaming agent such as cyclopentane, a high pressure is applied in the granulation process. And granulated and recycled as urethane fuel. Although the suction port is described as having a horizontally long shape here, it is needless to say that the suction port may have a round shape or a polygonal shape that can be covered over the entire width direction. However, the elongated shape can reduce the area of the suction port, so that a stronger suction force can be obtained.

  According to the structure demonstrated above, the foaming urethane material and the core material of a vacuum heat insulating material can be isolate | separated easily easily after crushing the housing of a refrigerator, and it is not necessary to remove VIP one by one from a refrigerator. Therefore, it is not necessary to perform a complicated operation of removing the iron plate in accordance with the location where the refrigerator VIP is used depending on the age and model. In addition, it is possible to cope with small-sized VIPs of ceilings and doors and VIPs of arbitrary shapes that are not flat plates, which have been increasingly used in recent years.

  Moreover, since it is a selection method using air pressure for separation and does not require magnetic force, it is not necessary to add iron powder separately during crushing. Therefore, it is possible to sort the GW lump from the light weight after crushing the refrigerator without worrying about the amount of iron powder produced, the size of iron powder, and the amount of iron powder mixed by stirring. Furthermore, by reducing the mesh size of the mesh conveyor relative to the size of the mesh at the time of screening, the size of the urethane crushed pieces can be set larger than the mesh size of the mesh conveyor. Therefore, since the urethane crushed pieces do not physically pass through the mesh conveyor mesh, there is an effect of preventing the urethane crushed pieces from being accompanied by the GW lump.

  As described above, according to the above embodiment, since the core material of the vacuum heat insulating material can be removed after the refrigerator casing is crushed, it is not necessary to remove VIP from a plurality of locations one by one in the refrigerator. In addition, since the magnetic force is not used when separating the GW lump and the urethane crushed pieces, the GW lump can be selected from the light weight after crushing the refrigerator regardless of the type of crusher and the presence or absence of iron powder. Furthermore, by setting the size of the mesh conveyor grid to be smaller than the size of the urethane crushed pieces, it has the effect of physically suppressing the urethane crushed pieces from being accompanied by the GW soul. It plays.

  In the above embodiment, the mesh conveyor has been described in a form having a grid-like mesh part, but instead of the grid-like mesh part, a punch hole structure in which round holes having a predetermined diameter are provided on the conveyor, It is good also as a structure attracted | sucked from a suction opening through the said round hole. Moreover, not only a round hole but polygonal shape, such as a triangle and a hexagon, or the structure which made the hole of arbitrary shapes by the predetermined dimension, may be sufficient.

Embodiment 2. FIG.
In Embodiment 1 described above, the configuration in which the suction port is provided at one location on the lower side of the mesh conveyor has been described. However, the suction ports may be provided at a plurality of locations. Furthermore, by providing a stirring mechanism between the suction ports provided at a plurality of locations, the position of the GW mass with respect to the mesh of the mesh portion can be changed, and the GW mass that could not be aspirated at the first suction port Can be reliably sucked at the next suction port. FIG. 4 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 2 of the present invention. In the figure, components having the same reference numerals as those described in the first embodiment indicate similar functions, and detailed description thereof is omitted here.

  The stirring mechanism 11 that is a stirring means for changing the position of the crushing and mixing heat insulating material on the mesh conveyor 2 is, for example, a bar-like one rotating on the mesh conveyor 2 upper side and a rotating surface thereof facing the delivery surface of the mesh conveyor 2. It is a structure to do. In addition, the transport pipes 7 extending from each of the plurality of suction ports are connected at a predetermined position and gathered into one transport pipe 7. In addition, although the stirring mechanism demonstrated the structure where a rod-shaped thing rotates above a mesh conveyor here, it is good also as a structure which reciprocates in the width direction of a mesh conveyor. In addition, the configuration in which the transport pipes extending from each of the plurality of suction ports are combined into one is described, but the transport pipes extending from each of the plurality of suction ports are not combined into one, and a transport pipe is provided for each. Needless to say, a configuration may be employed in which individual fans and cyclones are provided respectively.

  According to this configuration, even if the GW lump exists in a position where the first suction port is not meshed with respect to the mesh provided on the mesh conveyor or the opening such as a hole, the stirring mechanism may not be used. By changing the position, the relationship between the lattice portion of the mesh portion and the position where the GW block is present can be changed, and suction can be performed without any problem at the second and subsequent suction ports. Thereby, collection amount can be increased more.

Embodiment 3 FIG.
In the said Embodiment 1, although the GW lump was attracted | sucked in the form which sucks air from the mesh conveyor lower side, it is good also as a structure which sprays air from the mesh conveyor upper side. With such a configuration, the GW mass can be deformed with a stronger force, and suction can be performed more reliably. FIG. 5 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 3 of the present invention. In the figure, components having the same reference numerals as those described in the above embodiment indicate similar functions, and detailed description thereof is omitted here.

  The air discharge unit, which is one of the means for discharging air from the upper side of the mesh conveyor 2, includes a blower fan 12 that creates an air flow, and a flow for guiding the air flow created by the blower fan 12 to a predetermined location. The passage 13 and the nozzle 14 for blowing the air guided by the flow passage 13 onto the GW lump 24 vigorously are configured. Here, the nozzle 14 is installed at a position facing the suction port 4 across the mesh conveyor 2.

  According to this configuration, not only the suction force that the workpiece receives from the suction port but also the air pressure discharged from the nozzle is received, and the force that presses the workpiece against the opening of the mesh portion can be further increased. Therefore, even a GW lump having a relatively large size relative to the opening size of the mesh portion can be deformed and sucked, leading to an improvement in the recovery rate. In addition, since a larger air flow can be generated, occurrence of clogging of the mesh portion can be suppressed. In addition, by connecting the flow path of the blower fan 12 and the fan 5 as shown in the drawing, the air drawn from the suction port can be circulated and ejected from the nozzle. With such a configuration, the amount of air discharged from the entire apparatus can be reduced. In addition, you may make it set as a separate structure, without connecting the flow path of the ventilation fan 12 and the fan 5. FIG.

Embodiment 4 FIG.
In the above embodiment, the GW lump is sucked as it is, but the GW lump is a collection of fibrous glass fibers, and there are a lot of spaces in the GW lump. A strong airflow is required. Therefore, by allowing the GW mass to absorb water, the internal space can be filled with water and can be recovered even with a small suction force. FIG. 6 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 4 of the present invention. In the figure, components having the same reference numerals as those described in the above embodiment indicate similar functions, and detailed description thereof is omitted here.

  A watering device 15, which is one of liquid discharge means provided on the mesh conveyor 2 and in front of the suction port 4, uniformly sprays the crushed mixed heat insulating material placed on the mesh conveyor 2. Of the crushed and mixed heat insulating material, the urethane crushed pieces 23 are only slightly adhered to the surroundings even when water is applied, and do not penetrate inside. On the other hand, since the GW block 24 is an aggregate of fibers, the water absorption is good. As a result, most of the sprinkled water is absorbed by the GW lump 24 and the entire GW lump 24 is moistened. Therefore, since water has entered the fibers with respect to the suction force at the suction port 4, it becomes difficult for air to pass through the GW block 24, and a large pressure difference is generated between the upper portion and the lower portion of the GW block 24. Therefore, a large force can be applied even with a small suction force, and the recovery efficiency can be increased.

Embodiment 5. FIG.
In the above embodiment, the urethane crushed pieces that are not sucked from the suction port and remain on the mesh conveyor are transported as they are, and are recovered in a form that naturally falls into a collection box provided at the end of the mesh conveyor. Since it is in a lattice shape, urethane crushed pieces sandwiched between the lattice eyes remain as they are, which may cause clogging. Therefore, by blowing air from the back side of the mesh conveyor toward the front side, it is possible to remove the urethane crushed pieces sandwiched between the grids. FIG. 7 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 5 of the present invention. In the drawing, the same reference numerals as those described in the above embodiment are used for the same configuration, and detailed description thereof is omitted here.

  A part of the air flow created by the blower fan 12 constituting one of the air discharge means is guided to the flow path 17, and the nozzle 18 constituting one of the air discharge means provided behind the suction port 4 on the back side of the mesh conveyor 2. From the back side of the mesh conveyor 2 to the entire width direction, the air is vigorously released to the urethane crushed pieces 23 sandwiched between the mesh conveyor 2 and not dropped into the urethane collection box 9. According to such a configuration, even if the urethane crushed pieces 23 close to the lattice size of the mesh conveyor 2 are caught in the lattice of the mesh conveyor 2 due to the air flow flowing through the suction port 4, It can be blown away and recovered in the urethane recovery box 9. Therefore, the collection efficiency can be increased without causing clogging in the entire apparatus.

Embodiment 6 FIG.
In the above embodiment, an example using one mesh conveyor line has been described. However, by installing a plurality of mesh conveyors having different grid widths, business facilities can be made more compact and more efficient recovery can be achieved. It becomes. FIG. 8 is a diagram showing a heat insulating material sorting apparatus according to Embodiment 6 of the present invention. In the figure, components having the same reference numerals as those described in the above embodiment indicate similar functions, and detailed description thereof is omitted here.

  One drive shaft 19 is provided with a plurality of pulleys 3 and drives the mesh conveyor 2 connected in parallel. The drive shaft 19 is connected to the drive motor 20 by a belt, a chain, a gear, a coupling, or the like, and transmits the rotational motion generated by the drive motor 20 to the drive shaft 19. Here, by changing the lattice width of the mesh conveyors 2 connected in parallel, it is also possible to sort the size and size of the crushed and mixed heat insulating material in parallel. In addition, it can also be set as the structure which processes many more with respect to the same size crushing mixing heat insulating material, without changing a lattice width.

  With such a configuration, a plurality of mesh conveyors 2 can be driven simultaneously from one drive motor 20. In addition, by arranging the urethane recovery box 9 so as to straddle the ends of the two mesh conveyors 2, it is possible to share the urethane recovery box 9 into one while sorting in large and medium sizes. it can. Moreover, as shown in FIG. 9, the conveyance pipe 7 connected to the suction port 4 of each of the large and medium mesh conveyors 2 is connected in the middle of the flow path, so that the fan 5 and the cyclone 6 are shared by one. You can also.

  According to the configuration described above, it is possible to use the prime movers in common while enabling parallel processing to the crushed and mixed heat insulating materials of different sizes, and it is possible to reduce the cost and make it compact.

Embodiment 7
Although the example using a mesh conveyor has been described in the above embodiment, a configuration using a cylindrical sieve arranged in an inclined manner instead of the mesh conveyor may be used. 10 and 11 are diagrams showing a heat insulating material sorting apparatus according to Embodiment 7 of the present invention. In the figure, components having the same reference numerals as those described in the above embodiment indicate similar functions, and detailed description thereof is omitted here.

  For example, the cylindrical sieve 21 which is one of the conveying means is configured by a cylindrical body wound with a punching metal having punch holes having a predetermined hole diameter which is a space for allowing the GW lump 24 to pass therethrough. FIG. 11 shows a view seen from the direction A in FIG. As can be seen from the figure, the cylindrical sieve 21 is supported by a support roller 22. The support roller 22 is connected to the drive motor 20 via a speed reducer and connected by a belt, a chain, a gear, or a coupling. The support roller 22 has a function of transmitting the movement of the support roller 22 to the cylindrical sieve 21 in addition to the function of supporting the load of the cylindrical sieve 21.

  For example, a gear is cut in a part of the support roller 22, and meshes with a rack provided on the side surface of the cylindrical sieve 21 to transmit the rotational motion of the drive motor 20. With this structure, it is possible to give a rotational motion while supporting the hollow cylindrical sieve 21. The movement of the cylindrical sieve 21 is controlled by the drive motor 20 and slowly rotates or swings. The crushed and mixed heat insulating material is introduced from the upper part of the tilted cylindrical upper sieve 21 and gradually moves to the lower part due to the inclination of the cylindrical surface while being stirred by the rotating cylindrical sieve 21. A suction port 4 is provided on the bottom surface side of the cylindrical side surface, and the GW block 24 is sucked from the crushed mixed heat insulating material falling along the cylindrical side surface, and is carried to the cyclone 6 by the air flow generated by the fan 5. It is collected by the GW collection box 8. The inclination angle of the cylindrical sieve 21 can be adjusted by a jack mechanism or the like, and is adjusted according to the required processing amount of the workpiece to be input and the ease of slipping on the cylindrical surface. Further, the crushing urethane crushing piece 23 is also removed from the cylindrical sieving surface by the air discharge nozzle 16 when it moves upward as the cylinder rotates. Even when the suction of the GW lump 24 is not performed to the end and it is clogged, it is removed from the cylindrical sieve surface by the air discharge nozzle 16 in the same manner as the urethane crushed pieces 23, and the opportunity for sorting can be obtained again.

  According to the configuration described above, the sorting operation can be performed based on the same principle as in the above embodiment, but sufficient stirring effect is given to the crushed and mixed heat insulating material by rotating the cylindrical sieve without providing a separate stirring mechanism. be able to. Further, even if a plurality of suction ports are not provided, the crushing and mixing insulating material is sucked by passing through the vicinity of the suction port a plurality of times along with the movement of the cylindrical surface until it is discharged from the end portion of the cylindrical sieve. Opportunities can be increased sufficiently. Therefore, the collection efficiency can be increased without causing clogging in the entire apparatus.

  DESCRIPTION OF SYMBOLS 1 Input port, 2 mesh conveyor, 3 pulley, 4 suction port, 5 fan, 6 cyclone, 7 conveyance pipe, 8 GW collection box, 9 urethane collection box, 10 support roller, 11 stirring mechanism, 12 ventilation fan, 13 flow path , 14 nozzles, 15 watering device, 16 air discharge nozzle, 17 flow path, 18 nozzles, 19 drive shaft, 20 drive motor, 21 cylindrical sieve, 22 support roller, 23 urethane fragment, 24 GW soul.

Claims (11)

A crushing and mixing heat insulating material sorting device obtained by crushing heat insulating material including fiber heat insulating material,
Conveying means for conveying the crushed and mixed heat insulating material;
A suction means for sucking the fiber-based heat insulating material from the crushed and mixed heat insulating material;
With
The transport means has a space through which the fiber-based heat insulating material passes,
The heat insulating material sorting apparatus, wherein the suction means sucks the fiber-based heat insulating material through the space.   The heat-insulating material sorting apparatus according to claim 1, comprising a plurality of suction means.   3. The heat insulating material sorting apparatus according to claim 1, further comprising a discharge unit that discharges air at a position facing the suction unit and the transport unit.   The heat insulating material sorting apparatus according to any one of claims 1 to 3, further comprising discharge means for discharging liquid to the crushing and mixing heat insulating material.   The heat insulating material sorting apparatus according to any one of claims 1 to 4, further comprising discharge means for discharging air from a surface opposite to the transfer surface of the transfer means.   The heat-insulating material sorting apparatus according to any one of claims 1 to 5, wherein a plurality of the conveying means are provided.   The heat insulating material sorting apparatus according to any one of claims 1 to 6, wherein the conveying means is a belt-shaped conveyor.   The heat insulating material sorting apparatus according to any one of claims 1 to 6, wherein the conveying means is a cylindrical rotating body arranged in an inclined manner. A method for selecting a crushed mixed heat insulating material obtained by crushing a heat insulating material including a fiber-based heat insulating material,
A transporting step of transporting the crushed and mixed heat insulating material by transporting means having a space through which the fiber-based heat insulating material passes;
A suction step of sucking the fiber-based heat insulating material transported in the transport step by a suction means through a space provided in the transport means;
Method for insulating material including   The heat insulating material selection method according to claim 9, further comprising a discharging step of discharging a liquid to the crushing and mixing heat insulating material.   The method for selecting a heat insulating material according to claim 9, further comprising a stirring step of stirring the crushed mixed heat insulating material being transported in the transporting step.

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