JP2002191999A - Vertical crusher, gas recovery system equipped therewith and waste treatment method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently recover fluorocarbon gas generated by crushing a heat insulating material when a refrigerator is subjected to crushing treatment. SOLUTION: A gas recovery system 1 is equipped with a vertical crusher 10, the vibration feeder 19 arranged at a position lower than the discharge port 17 of the vertical crusher 10 forming an airtight chamber 22 above a feed part 21, a duct 18 for introducing the crushed pieces and fluorocarbon gas discharged from the discharge port 17 into the vibration feeder 19 in an airtight state, circulating pipings 30a-30c for returning the fluorocarbon gas sucked from the airtight space 22 to the upper part of the crushing chamber 12 of the vertical crusher 10, a bag filter 31 for collecting the crushed pieces in the fluorocarbon gas circulating through the circulating pipings 30a-30c, a fan 33 for generating the circulating stream of the fluorocarbon gas and a fluorocarbon gas recovery device 37 for recovering the fluorocarbon gas from the midway part of the circulating piping 30c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical crusher suitable for crushing waste and the like, and a gas recovery system for crushing waste with the vertical crusher and collecting generated gas generated at that time. Things.

[0002]

2. Description of the Related Art A vertical crusher is one of devices for crushing waste such as home electric appliances. This vertical crusher is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-332401.
A crushing chamber is provided inside the crusher, and a rotating shaft having an axis directed vertically is rotatably provided in the crushing chamber, and a plurality of crushing blades are provided on the rotating shaft. The crushed object is thrown in from the upper part of the chamber, and the crushed object is crushed by the crushing blade rotating with the rotating shaft while the crushed object falls down the crushing chamber from the top to the bottom, and the crushed crushed pieces are crushed. The air is discharged from a discharge port provided at the bottom of the chamber.

[0003] Further, in home electric appliances such as refrigerators, urethane foam is often used as a heat insulating material. Conventionally, this urethane foam uses freon or cyclopentane as a foaming agent. If such a household electrical appliance is crushed by a crusher, a fluorocarbon gas or a cyclopentane gas is released when the heat insulating material is crushed. Therefore, it is necessary to collect these gases. As a conventional method for recovering these gases, a gas such as chlorofluorocarbon released when crushing the heat insulating material is sucked together with the crushed pieces of crushed heat insulating material and the air in the crusher to separate crushed pieces such as cyclones. The gas containing chlorofluorocarbon and the like separated by this crushed piece separation device is collected and processed by a gas recovery device, and the crushed pieces of the heat insulating material are further crushed by another crusher, and the gas such as chlorofluorocarbon released here Was recovered by the gas recovery apparatus.

[0004]

However, in the above-mentioned conventional vertical crusher, the crushed pieces of the crushed material stay between the lowermost crushing blade and the bottom of the crushing chamber, or the crushed pieces are crushed. However, there is a problem that troubles such as clogging of the discharge port to make discharge impossible occur easily and maintenance is troublesome.

In the above-mentioned conventional method of recovering CFCs, the amount of gas introduced into the CFC recovery device is increased, and a CFC recovery device having a large processing capacity is required, resulting in an increase in the size of the entire system. . Therefore, the present invention provides a vertical crusher that is easy to maintain and a gas recovery system that can be made compact.

[0006]

In order to solve the above-mentioned problems, a vertical crusher according to the first aspect of the present invention includes a crushing chamber, and a crushing chamber installed above the crushing chamber to remove crushed materials. An inlet for charging the crushing chamber, a crushing blade that is installed in multiple stages vertically in the crushing chamber and horizontally rotates to crush the object to be crushed, and crushed pieces crushed by the crushing blade from the crushing chamber. And a discharge port provided at substantially the same height as the crushing blade at the lowermost stage for discharging.

[0007] With this configuration, the crushed object is crushed by the crushing blade, and the crushed crushed pieces can be forcibly pushed out of the discharge port by the crushing blade at the lowermost stage. The wind pressure created by the rotation of the blades helps this.

According to a second aspect of the present invention, in the first aspect of the invention, the object to be crushed is a waste that generates gas at the time of crushing. Gas is discharged from the discharge port by a crushing blade at a lowermost stage of the crusher. With this configuration, the generated gas having a higher specific gravity than air can be easily discharged, and an exhaust port dedicated to the generated gas is not required.

According to a third aspect of the present invention, in the second aspect of the invention, the opening is provided with an opening / closing device which is opened only when the material to be crushed is charged. With this configuration, the amount of air flowing into the vertical crusher from the input port can be reduced.

According to a fourth aspect of the present invention, there is provided a gas recovery system, wherein a vertical crusher according to the second or third aspect and an airtight space above a conveying section are provided at an outlet of the vertical crusher. A vibration feeder installed so as to be formed, an introduction path for introducing crushed fragments and generated gas discharged from the discharge port to the vibration feeder in an airtight state, and a gas sucked from the airtight space of the vibration feeder. It is characterized by comprising a circulating gas passage returning to the upper part of the crushing chamber of the vertical crusher, and a gas collecting device for collecting gas from the middle of the circulating gas passage.

With this configuration, the gas generated when the waste is crushed by the vertical crusher is transferred to the vertical crusher → introduction path → vibration feeder → circulating gas path →
It is possible to circulate with the vertical crusher, and it is possible to collect the generated gas concentrated during circulation in the gas recovery device. In addition, the vibrating feeder not only transports the crushed pieces to the subsequent process, but also makes it easier for the generated gas to be separated from the crushed pieces and also allows the generated gas to be reliably separated.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, there is provided a collecting device for collecting crushed pieces contained in a gas in the circulating gas passage, and a circulating gas flow in the circulating gas passage. And a blower that generates With such a configuration, fine crushed pieces present in the gas can be collected by the collection device, and the crushed pieces can be prevented from circulating together with the generated gas.

According to a sixth aspect of the present invention, in the fifth aspect of the invention, the blower is disposed downstream of the collection device, and the gas recovery device is located downstream of the blower. It is characterized by being connected to a circulating gas path located. With this configuration, the concentrated generated gas can be reliably recovered by the gas recovery device.

According to a seventh aspect of the present invention, in any one of the fourth to sixth aspects of the present invention, the inside of the flow path through which the generated gas flows has a negative pressure. With this configuration, it is possible to prevent the generated gas from leaking out of the system.

According to an eighth aspect of the present invention, in the invention according to any one of the fifth to seventh aspects, the crushed pieces conveyed by the vibrating feeder are separated into a heavy crushed piece and a light crushed piece by an air flow. And a crushed piece separation device that separates the lightweight crushed pieces separated from the air by the light crushed pieces separated by the sorter and conveyed by an air flow, It is characterized by comprising a gas extraction device for extracting contained gas, and an extraction gas circulation path for returning the extraction gas extracted by the gas extraction device to the collection device. With this configuration, it is possible to extract the gas contained in the lightweight crushed pieces, circulate the extracted gas in the same path as the generated gas, concentrate the gas, and collect the gas by the gas recovery device. Becomes

A ninth aspect of the present invention is characterized in that, in the eighth aspect of the invention, the air separated from the crushed pieces by the crushed piece separation device is discharged out of the system. With this configuration, it is possible to discharge air that does not contain the generated gas to the outside of the system.

According to a tenth aspect of the present invention, in the invention of the eighth or ninth aspect, the crushed pieces collected by the collecting device are transported to the gas extracting device, and the crushed pieces are collected by the gas extracting device. Is characterized in that the gas contained in the crushed pieces is extracted together with the gas contained in the lightweight crushed pieces. With this configuration, the gas contained in the crushed pieces collected by the collection device is extracted by the gas extraction device, and the extracted gas is circulated and concentrated in the same path as the generated gas. The gas can be recovered by the gas recovery device.

An eleventh aspect of the present invention is characterized in that, in the invention of any one of the fourth to tenth aspects, the generated gas is Freon or cyclopentane. With this configuration, it is possible to collect gases such as CFCs and cyclopentane used as a foaming agent in foams such as a heat insulating material.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vertical crusher according to the present invention and a gas recovery system provided with the same will be described below with reference to the drawing of FIG. Note that the vertical crusher in this embodiment is a mode of crushing waste of a refrigerator, which is one of home appliances, and the gas recovery system in this embodiment crushes a refrigerator as waste. In addition, this is an embodiment in which Freon gas is recovered from urethane foam used as a heat insulating material in a refrigerator.

FIG. 1 is a diagram showing a schematic configuration of a gas recovery system 1 provided with a vertical crusher 10. Vertical crusher 10
Comprises a main body 13 having a crushing chamber 12
3, a charging port 11 which is open above the crushing chamber 12 and a rotary shaft 1 provided in the crushing chamber 12 and having an axial center extending vertically and rotatably installed around the axial center.
5, crushing blades 16a to 16 provided in four stages in the vertical direction on the rotating shaft 15 and horizontally rotating together with the rotating shaft 15.
d, a discharge port 17 which is the body of the main body 13 and opens at the lowermost portion, and a shutter (opening / closing device) 14 which opens and closes the input port 11. The lowermost crushing blade 16d is arranged very close to the bottom of the crushing chamber 12, and the discharge port 14 is arranged at the same height position as the crushing blade 16d.

A conveyor 110 is installed in the inlet 11, and a conveyer 110 conveys a refrigerator housing 100 as an object to be crushed to the inlet 11. Before being transferred to the conveyer 110, the refrigerator was deprived of Freon gas as a refrigerant,
The interior lighting fixtures, metal and glass shelves, power cords, copper tubes for refrigerant, etc. have been removed.
Only the housing 100 mainly composed of a plastic decorative board and urethane foam as a heat insulating material is conveyed to the charging port 11. The shutter 14 is normally closed, and is opened only when the housing 100 passes through the insertion port 11.

Refrigerator housing 1 inserted through inlet 11
00 falls into the crushing chamber 12 and collides with the crushing blades 16 a to 16 d rotating in the crushing chamber 12,
Finely crushed. At the time of this crushing, the urethane foam of the housing 100 is also crushed, and at that time, Freon gas as a foaming agent existing on the crushed surface of the urethane foam is released. This CFC has a specific gravity greater than that of air, and a downflow of circulating gas is generated in the vertical crusher 10 as will be described later. Since the shutter 14 of the inlet 11 is opened only when the casing 100 is carried into the vertical crusher 10, the amount of air flowing into the vertical crusher 10 from the inlet 11 is reduced. Fluorocarbon gas can be prevented from being unnecessarily diluted.

The crushed pieces of the casing 100 descending to the bottom of the crushing chamber 12 and the chlorofluorocarbon gas generated by the crushing are pushed out by the crushing blade 16d at the lowermost stage and the wind pressure generated by the rotation of the crushing blade 16d at the lowermost stage. And the outlet 17 which is pushed out by the flow of the circulating gas.
Is discharged from the outside. Therefore, the crushed pieces are
Does not stay at the bottom of the device or block at the discharge port 17.

A duct (introduction path) 18 is hermetically connected to the outlet 17, and the bottom plate of the duct 18 is formed as a downwardly inclined surface that descends as the distance from the outlet 17 increases. The distal end of the duct 18 is connected to a hood 20 of a vibrating feeder 19 that is installed horizontally at a position lower than the outlet 17. The hood 20 covers the upper part of the transport unit 21 of the vibrating feeder 19 to form an airtight space 22 therein, and between the duct 18 and the hood 20 is provided a baffle plate 23 that blocks these upper parts. .

The crushed pieces of the casing 100 discharged from the discharge port 17 slide down the bottom plate of the duct 18 and vibrate in the vibration feeder 19.
It falls onto the transport unit 21 and is transported by the vibration in the end direction of the transport unit 21. While the crushed pieces move while vibrating the transporting section 21, the CFCs existing between the crushed pieces and the CFCs that have entered the gaps between the crushed pieces are separated from the crushed pieces. Thereby, the recovery rate of the chlorofluorocarbon gas can be improved, and the chlorofluorocarbon gas can be prevented from being discharged out of the system together with the crushed pieces.

The starting end of the scraper conveyor 24 is disposed below the end of the vibrating feeder 19, and the scraper conveyor 24 is installed in a climbing and inclined posture with its end side positioned higher than the starting end side. Vibration feeder 1
The crushed pieces transported to the end of the transport section 21 of the transport section 9
1 and is transferred to the beginning of the scraper conveyor 24. A sealing device 25 is provided between the end of the vibrating feeder 19 and the beginning of the scraper conveyor 24 so that the Freon gas in the hermetic space 22 does not leak to the outside and external air does not enter the hermetic space.
Is provided.

The crushed pieces transferred to the scraper conveyor 24 are conveyed in the terminal direction, fall from the terminal end of the scraper conveyor 24, and flow into the wind separator 26.
Air for generating an obliquely upward air flow therein is supplied to the wind separator 26 from a blower 27, and the crushed pieces supplied to the wind separator 26 by this air flow are weight crushed pieces. And light crushed pieces.
In other words, of the crushed pieces, crushed pieces such as plastic decorative boards are heavy and fall down against the airflow, and crushed pieces of urethane foam, which was a heat insulating material, are lightweight and do not fall. The air flows along the air transport pipe 28 together with the air to be transported to the cyclone 41. It should be noted that heavy crushed pieces such as plastic decorative boards are sorted into iron, non-ferrous metal, resin and the like by a sorting device (not shown), and the final processing is performed for each material.

On the other hand, the Freon gas discharged from the discharge port 17 of the vertical crusher 10 passes through the duct 18 and flows into the hermetic space 22 of the vibration feeder 19 from below the baffle plate 23. The Freon gas in the airtight space 22 is introduced into a bag filter (collection device) 31 via a circulation pipe 30 a connected to a top plate of the hood 20. This bag filter 3
1 separates fine crushed pieces present in the CFC gas, and the fine crushed pieces are accumulated on the bottom of the bag filter 31. Most of the fine crushed pieces are crushed pieces of urethane foam. In addition, bag filter 3
The chlorofluorocarbon gas from which fine crushed pieces have been removed by 1 is sucked by a fan (blower) 33 through a circulation pipe 30b, and furthermore, a circulation pipe 30c having a flow control valve 34.
From the upper end of the main body 13 of the vertical crusher 10 through the main body 13
Will be returned within.

A recovery pipe (gas recovery device) 36 having a flow control valve 35 is connected to the circulation pipe 30c located between the fan 33 and the flow control valve 34, and the CFC flowing through the circulation pipe 30c is converted to a CFC gas. It can be introduced into a recovery device (gas recovery device) 37. In this gas recovery system 1, the fan 33 is started and the flow control valve 34
, The chlorofluorocarbon gas flows into the vertical crusher 10 → the duct 18 → the hermetic space 22 of the vibration feeder 20 → the circulation pipe 30 a → the bag filter 31 → the circulation pipe 30 b → the fan 33 → the circulation pipe 30 c → the flow control valve 34 → the vertical Mold crusher 1
It circulates with 0. That is, in this embodiment, the circulation pipes 30 a to 30 c are provided with the gas evacuated from the hermetic space 22 of the vibration feeder 19 so that the vertical crusher 1
A circulating gas path that returns to the upper part of the crushing chamber 12 is formed.

Further, in the gas recovery system 1, the inside of the circulation path of the CFC gas is maintained at a negative pressure by adjusting the opening of the flow control valves 34 and 35. Thereby, it is possible to prevent the Freon gas from leaking out from the circulation path to the outside, and as a result, it is possible to improve the recovery rate of the Freon gas and to maintain the working environment of the gas recovery system 1 in a good condition. it can.

By circulating the chlorofluorocarbon gas in this manner, the chlorofluorocarbon gas is concentrated, and the concentrated chlorofluorocarbon gas is passed through the collection pipe 36 to the chlorofluorocarbon collection device 3.
7 to be collected. Since the Freon gas can be concentrated and recovered in this way, the processing capacity of the Freon gas recovery device 37 can be small, and the gas recovery system 1 can be made compact.

On the other hand, the fine crushed pieces collected by the bag filter 31 and accumulated at the bottom thereof are removed by the bag filter 3.
1 is periodically or quantitatively extracted by a rotary valve 38 provided at the bottom of
Is transported to the supply device 40 via the.

Further, the air transport pipe 28
The air and urethane foam crushed pieces transported to the cyclone (crushed piece separation device) 41 through the
The crushed pieces of urethane foam are collected at the bottom of the cyclone 41, and the air from which the crushed pieces have been removed is introduced into a bag filter (crushed piece separation device) 42 through an exhaust pipe 43. The bag filter 42 collects fine crushed pieces of urethane foam that cannot be separated by the cyclone 41, and the collected fine crushed pieces are collected at the bottom of the bag filter 42, and the clean crushed pieces are removed. The air is exhausted to the atmosphere via an intake pipe 44 and a fan 45.

The crushed pieces of urethane foam collected by the cyclone 41 and the crushed pieces of urethane foam collected by the bag filter 42 are combined with the rotary valve 46 provided at the bottom of the cyclone 41 or the bottom of the bag filter 42. Is periodically or quantitatively extracted by a rotary valve 47 provided in the crushed piece, and is conveyed to a supply device 40 through crushed piece discharge pipes 48 and 49, respectively.

Thus, the crushed pieces of urethane foam collected by the bag filter 31, the cyclone 41, and the bag filter 42 are supplied to the supply device 40. The supply section of the supply device 40 is sealed, and crushed pieces of urethane foam are quantitatively supplied from the supply device 40 to a compression molding machine (gas extraction device) 51 via a duct 50. The compression molding section of the compression molding machine 51 is also hermetically sealed, and the crushed pieces of urethane foam are compression molded into pellets in this compression molding machine 51. Then, when the urethane foam is compressed in the compression molding machine 51, the CFC contained in the urethane foam is extracted, and the extracted CFC is conveyed to the circulation pipe 30a through the extraction pipe (extraction gas circulation path) 52. Airtight space 2 of the vibration feeder 19
And circulates through the circulation path together with the chlorofluorocarbon gas extracted from 2. The gas in the supply device 40 is supplied to the degassing pipe 5.
Then, it is discharged to the extraction pipe 52 via 3 and transported to the circulation pipe 30a.

Therefore, in this gas recovery system 1, the chlorofluorocarbon gas generated when the refrigerator casing 100 is crushed by the vertical crusher 10 and the chlorofluorocarbon gas extracted by compressing the crushed urethane foam are separated. Both of them can be concentrated by circulating them in a circulation path including the vertical crusher 10, and the concentrated chlorofluorocarbon gas can be introduced into the chlorofluorocarbon gas recovery device 37 and collected.

Further, in the vertical crusher 10 of the waste treatment apparatus 1, crushed pieces and Freon gas generated by crushing are discharged from the discharge port 17 provided at the lower part of the vertical crusher 10. In addition, Freon gas having a higher specific gravity than air can be easily discharged, and a discharge port dedicated to Freon gas is not required, so that the configuration of the vertical crusher 10 is simplified.

[Other Embodiments] The vertical crusher according to the present invention is not limited to the above-described embodiment. For example, the crushed material crushed by the vertical crusher is limited to a refrigerator. Instead, it may be the waste of other home appliances such as air conditioners and washing machines, or may be other than the waste of home appliances. Is also good.

The gas generated when the material to be crushed is crushed by the vertical crusher is not limited to Freon gas, but may be cyclopentane or another organic solvent. In the vertical crushing machine 10 of the above-described embodiment, the number of crushing blades is four, but the number of crushing blades is not limited to four if it has a plurality of stages.

[0040]

As described above, according to the first aspect of the present invention, the crushed object is crushed by the crushing blade, and the crushed crushed pieces are forcibly forced from the discharge port by the lowermost crushing blade. And the wind pressure generated by the rotation of the crushing blades supports this, so that it is possible to prevent crushed pieces from staying at the bottom of the crushing chamber and preventing the crushed pieces from being clogged at the discharge port. The effect is achieved.

According to the second aspect of the present invention, it is possible to easily discharge a generated gas having a specific gravity higher than that of air, and it is not necessary to provide a dedicated outlet for the generated gas. There is. According to the invention described in claim 3, since the amount of air flowing into the vertical crusher from the input port can be reduced, it is possible to prevent the generated gas from being unnecessarily diluted. is there.

According to the fourth aspect of the present invention, it is possible to circulate the generated gas generated when the waste is crushed by the vertical crusher. Since the gas can be collected by the collecting device, the gas collecting device requires only a small processing capacity, and has an excellent effect that the entire device can be made compact. In addition, the vibrating feeder makes it easier for the generated gas to separate from the crushed pieces and reliably separates the generated gas, thereby improving the recovery rate of the generated gas and preventing the generated gas from being discharged out of the system together with the crushed pieces. There is an effect that can be.

According to the fifth aspect of the invention, fine crushed pieces present in the gas can be collected by the collecting device, and the crushed pieces can be prevented from circulating together with the generated gas. Since it becomes possible, there is an effect that the recovery rate of crushed pieces is improved. According to the invention described in claim 6, since the concentrated generated gas can be reliably recovered by the gas recovery device, the processing capacity of the gas recovery device can be reduced, and the entire device can be reduced in size. effective.

According to the seventh aspect of the invention, it is possible to prevent the generated gas from leaking out of the system, so that the recovery rate of the generated gas is improved and the working environment around the apparatus is deteriorated. There is an effect that it can be prevented from being performed. According to the invention described in claim 8 or claim 9, after extracting the gas contained in the light crushed pieces, circulating the extracted gas in the same path as the generated gas and concentrating the same, the gas recovery device It becomes possible to collect.

According to the tenth aspect of the present invention, the gas contained in the crushed pieces collected by the collecting device is extracted by the gas extracting device, and the extracted gas is circulated along the same path as the generated gas to be concentrated. After that, the gas can be recovered by the gas recovery device. According to the eleventh aspect of the present invention, it is possible to collect a gas such as CFCs and cyclopentane used as a foaming agent in a foam such as a heat insulating material. There is an effect that it becomes possible to crush the home appliances.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a vertical crusher and a gas recovery system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas recovery system 10 Vertical crusher 11 Input port 12 Crushing chamber 14 Shutter (opening / closing device) 16a to 16d Crushing blade 16d Lowermost crushing blade 18 Duct (introduction path) 19 Vibration feeder 21 Transport unit 22 Airtight space 26 Wind power sorting Machines 30a to 30c Circulation piping (circulation gas passage) 31 Bag filter (collection device) 33 Fan (blower device) 36 Recovery piping (gas recovery device) 37 Freon gas recovery device (gas recovery device) 41 Cyclone (fragment fragment separation device) 42 Bag filter (Fragment separation device) 51 Compression molding machine (Gas extraction device) 52 Extraction pipe (Extraction gas circulation path)

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[Procedure amendment]

[Submission date] April 10, 2001 (2001.4.1
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: Vertical crusher, gas recovery system including the same, and waste disposal method

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

An eleventh aspect of the present invention is characterized in that, in the invention of any one of the fourth to tenth aspects, the generated gas is Freon or cyclopentane. With such a configuration, it is possible to collect gases such as fluorocarbon and cyclopentane used as a foaming agent in a foam such as a heat insulating material. Claim 1
The method for treating waste according to the invention described in Item 2 is the method according to the above claim.
A gas recovery system according to any one of claims 4 to 11.
Crush the waste with the above crusher, and crush the waste
The gas generated when crushing the pieces is guided to the vibrating feeder.
Gas in the hermetic space of the vibrating feeder
Return to the crushing chamber of the vertical crusher via the circulation gas path
And circulate the gas through the circulation gas passage
The gas is recovered in the gas recovery device.
With this configuration, only waste is crushed
But also the gas generated when crushing waste
It becomes possible to do.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0045

[Correction method] Change

[Correction contents]

According to the tenth aspect of the present invention, the gas contained in the crushed pieces collected by the collecting device is extracted by the gas extracting device, and the extracted gas is circulated along the same path as the generated gas to be concentrated. After that, the gas can be recovered by the gas recovery device. According to the eleventh aspect of the present invention, it is possible to collect a gas such as CFCs and cyclopentane used as a foaming agent in a foam such as a heat insulating material. There is an effect that it becomes possible to crush the home appliances. Claim 1
According to the invention described in item 2, not only the waste is crushed,
And collect the gas generated when crushing waste
It becomes possible.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D065 AA18 BB04 BB12 EB02 EB11 EB14 ED02 ED24 ED46 4D067 EE04 EE13 EE22 GA10 GA11 GA16 GA18

Claims (11)

[Claims] A crushing chamber, an input port installed above the crushing chamber for charging an object to be crushed into the crushing chamber, A crushing blade for crushing the material to be crushed, and a discharge port provided at substantially the same height as the crushing blade at the lowermost stage for discharging crushed pieces crushed by the crushing blade from a crushing chamber. Characteristic vertical crusher. 2. The crushed material is a waste that generates gas at the time of crushing, and crushed crushed pieces and gas generated by crushing are discharged from the discharge port by a crushing blade at a lowermost stage of the crusher. The vertical crusher according to claim 1, wherein the crusher is discharged. 3. The vertical crushing machine according to claim 2, wherein an opening / closing device that opens only when the material to be crushed is charged is provided at the charging port. 4. A vertical crusher according to claim 2 or 3, and a vibratory feeder installed at a discharge port of the vertical crusher so as to form an airtight space above a transfer section. An introduction path for introducing the crushed pieces and generated gas discharged from the discharge port into the vibrating feeder in an airtight state, and returning the gas sucked from the airtight space of the vibrating feeder to an upper part of a crushing chamber of the vertical crusher. A gas recovery system comprising: a circulation gas path; and a gas recovery device that recovers gas from the middle of the circulation gas path. 5. The circulating gas path includes a collecting device for collecting crushed pieces contained in the gas, and a blower for generating a circulating gas flow in the circulating gas path. 5. The gas recovery system according to 4. 6. The air blower is disposed downstream of the collection device, and the gas recovery device is connected to a circulating gas passage located downstream of the blower. Item 6. A gas recovery system according to Item 5. 7. The gas recovery system according to claim 4, wherein the inside of the flow passage through which the generated gas flows has a negative pressure. 8. A sorting machine for sorting the crushed pieces conveyed by the vibrating feeder into a heavy crushed piece and a light crushed piece by an air flow, and separating the light crushed piece sorted by the sorter and conveyed by an air flow into air. A crushed piece separation device that separates the gas from the lightweight crushed pieces separated by the crushed piece separation apparatus; and The gas recovery system according to any one of claims 5 to 7, further comprising: an extraction gas circulation path that returns to the collection device. 9. The gas recovery system according to claim 8, wherein the air separated from the crushed pieces by the crushed piece separation device is discharged out of the system. 10. The crushed pieces collected by the collecting device are conveyed to the gas extraction device, and the gas extraction device extracts gas contained in the crushed pieces together with gas contained in the lightweight crushed pieces. The gas recovery system according to claim 8 or 9, wherein 11. The gas according to claim 4, wherein the generated gas is Freon or cyclopentane.
The gas recovery system according to any one of the above.