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1. 发明专利

DE4418627A1 Process and apparatus for recovering blowing gas from foamed materials 未知
公开(公告)号：DE4418627A1
公开(公告)日：1994-12-01
申请号：DE4418627
申请日：1994-05-27
申请人： HITACHI LTD
发明人： KIMURA NOBUO , HAYASHI MASAKATSU , ODA CHIKAO , SAKAGUCHI KAZUO , TAKAMURA YOSHIYUKI , UCHIYAMA KICHIJI , MAKINO KAZUO , TERAYAMA NORITAKA
IPC分类号： B02C13/282 , B02C18/14 , B02C21/00 , B03B9/06 , B07B4/02 , B09B3/00 , B29B17/02 , B29B9/02 , B29B11/02 , C08J11/02
摘要： A process and an apparatus for the effective separation of a foamed heat-insulating material into a blowing gas and a resin without changing the same and for recovery of the same. The process includes the following steps: detaching a foamed heat-insulating material (17) from a composed material (14, 15, 17) which contains this foamed heat-insulating material, in a shredder (3), which is provided with a high-speed rotor (5) with a plurality of hammers (4) and also with a housing (6) surrounding the rotor, segregating the foamed heat-insulating material in an air classifier (9) of the inclined-tube type, the angle of inclination ( THETA ) of which has a certain value and in the case of which the height of the wind tunnel is limited, destroying the segregated foamed heat-insulating material in a pulverising section (21), in order to segregate a blowing gas therefrom, cooling the segregated blowing gas in a condensing section (27), in order to liquefy the blowing gas, and compressing the pulverised, foamed heat-insulating material in a compressor (30), in order to reduce the volume of the same without allowing the blowing gas to escape from the system.

2. 发明专利

JPH07232153A METHOD FOR TREATING SPENT URETHANE AND DEVICE THEREFOR 失效
公开(公告)号：JPH07232153A
公开(公告)日：1995-09-05
申请号：JP2646194
申请日：1994-02-24
申请人： HITACHI LTD
发明人： SAKAGUCHI KAZUO , KIMURA NOBUO , ODA CHIKAO , UCHIYAMA KICHIJI , TERAYAMA NORITAKA
IPC分类号： B01D53/70 , B09B3/00 , B09B5/00 , B29B17/00 , B29B17/04
摘要： PURPOSE:To prevent gaseous fluorocarbon of high concentration from being carried by spent urethane and leaked to the outside of equipment in a method for treating the spent urethane in which a urethane foam is separated into the gaseous fluorocarbon and a urethane resin by crashing the spent urethane and passing air through the crashed spent urethane. CONSTITUTION:A urethane foam is stored in a hopper 1 and transferred to a crasher 3 by a screw 2 and finely crashed. Gaseous fluorocarbon generated from the urethane is filled into a space 4 and recovered by a gaseous fluorocarbon recovery device 5. The crashed spent urethane falls into an intermediate vessel 11 with the gaseous fluorocarbon having the same concentration as that filled in the space 4 remaining in it. Replacement gas is fed from a gas feeding hole 13 by a sufficient quantity to replace the gaseous fluorocarbon in a cylinder 12. Then, most of the remaining gaseous fluorocarbon of high concentration is replaced with the replacement gas and turned into gaseous fluorocarbon of low concentration. After that, when the concentration of the gaseous fluorocarbon is lowered to some degree, a gate valve 15 is opened to move a piston 14 and the spent urethane is recovered outside equipment.

3. 发明专利

JPH079446A METHOD AND APPARATUS FOR RECOVERING FOAMING GAS IN HEAT INSULATING MATERIAL 失效
公开(公告)号：JPH079446A
公开(公告)日：1995-01-13
申请号：JP15731693
申请日：1993-06-28
申请人： HITACHI LTD
发明人： ODA CHIKAO , KIMURA NOBUO , SAKAGUCHI KAZUO , TAKAMURA YOSHIYUKI , UCHIYAMA KICHIJI
IPC分类号： B29B17/00 , B29B17/04
摘要： PURPOSE:To recover foaming gas by destructing a film having foam formed thereto to convert closed cells to open cells to degass the foaming gas such as fluorocarbon gas and increasing the concn. of the foaming gas in the gas containing the foaming gas and accompanied air to liquefy the foaming gas. CONSTITUTION:Dynamic external force such as shearing force or impact force is allowed to act on a heat insulating material by a high speed rotary grinder 31 and closed cells are destructed to separate the heat insulating material into a resin and the gas is compressed to be passed through a membrane concentrator 52 to be enhanced in concn. and the conc. gas is cooled and liquefied by condensers 61, 62. Therefore, the foaming agent is separated from the heat insulating material such as hard foamed polyurethane without diffusing fluorocarbon or the like to the atmosphere to be liquefied and recovered.

4. 发明专利

JPH05146701A LOW TEMPERATURE CRUSHING AND SORTING METHOD 失效
公开(公告)号：JPH05146701A
公开(公告)日：1993-06-15
申请号：JP31600691
申请日：1991-11-29
申请人： HITACHI LTD
发明人： TAKAMURA YOSHIYUKI , UCHIYAMA KICHIJI , HAYASHI MASAKATSU , ODA CHIKAO , HASEGAWA TSUTOMU , MORI HIDEJI
IPC分类号： B02C19/18 , B02C21/00 , B03C1/00 , B03C1/23 , B03C1/24
摘要： PURPOSE:To improve sorting accuracy and recovery efficiency in crushing and sorting by material massive matter, such as motors, compressors and transformers of scrapped electrical appliances, etc., to recover valuable resources by performing a two-stage crushing making good use of properties of materials, such as low temperature brittleness and non-brittleness, to sort uncrushed materials. CONSTITUTION:A massive matter 30a is taken out from a raw material 20 and cooled and sorted into small fragments 24 which the matter 30a undergoes cold-shortness crushing with impact action by the 1st crusher 12 to form and nonbrittlement massive matter 30b. Further, the massive matter 30b is crushed by the 2nd crusher 13. The crushed matter is subjected to magnetic separation and eddy current separation to sort it into magnetic crushed materials, nonferrous material, nonmetal, etc.

5. 发明专利

JPH0491725A UNIT SYSTEM PLANT FACTORY 失效
公开(公告)号：JPH0491725A
公开(公告)日：1992-03-25
申请号：JP20500290
申请日：1990-08-03
申请人： HITACHI LTD
发明人： UCHIYAMA KICHIJI , SATONO TADASHI
IPC分类号： A01G31/00 , A01G7/00 , A01G9/18 , A01G9/24
摘要： PURPOSE:To enable an efficient cultivation when a medium scale cultivation is required by utilizing a ready-made box unit as a circumstance-shielding unit, attaching respective units to the inside of the box unit or to the outer surface thereof and making the structure monolithic. CONSTITUTION:A box unit 1 is ready made and used for formation of a circumstance-shielding unit and three dimensional cultivation units 2 are arranged in the inside thereof in a U-shaped state. Numberless planting holes are made in the surface thereof in order to grow plants 3 as many as possible and the plants 3 are inserted into the planting holes. A nutrient solution is supplied from a cultivation liquid supplier composed of a nutrient solution tank 4, etc., through the three dimensional cultivation units 2 to the plants 3. An electric light unit composed of lamps 10, etc., is attached to the outer surface in order to applying light to the plants 3 and an air conditioner composed of a refrigerator 18, etc., is attached for controlling the temperature and humidity of the box unit 1. A carbon dioxide gas unit composed of carbon dioxide gas bombs 23, etc., is attached to the outer surface so that a suitable amount of carbon dioxide gas may be supplied to the inside of the box unit 1.

6. 发明专利

JPS63216410A CROP FORCING CULTURE APPARATUS 失效
公开(公告)号：JPS63216410A
公开(公告)日：1988-09-08
申请号：JP5004887
申请日：1987-03-06
申请人： HITACHI LTD
发明人： SUGIYAMA TSUNEO , UCHIYAMA KICHIJI
IPC分类号： A01G9/20 , A01G9/24 , A01G9/26

7. 发明专利

JPS6374427A FORCING CULTURE APPARATUS 失效
公开(公告)号：JPS6374427A
公开(公告)日：1988-04-04
申请号：JP21948286
申请日：1986-09-19
申请人： HITACHI LTD
发明人： SUGIYAMA TSUNEO , UCHIYAMA KICHIJI
IPC分类号： A01G9/00 , A01G31/00 , A01G31/04

8. 发明专利

JPH0751628A PNEUMATIC CLASSIFIER 失效
公开(公告)号：JPH0751628A
公开(公告)日：1995-02-28
申请号：JP20606693
申请日：1993-08-20
申请人： HITACHI LTD
发明人： SAKAGUCHI KAZUO , ODA CHIKAO , KIMURA NOBUO , UCHIYAMA KICHIJI , KOBAYASHI HIROAKI
IPC分类号： B07B4/08 , B29B17/00 , B29B17/04 , C08J11/02
摘要： PURPOSE:To separate and recover a lightweight material, such as an insulator in wastes from the mixture of mediumweight and heavyweight materials with a high classification rate by feeding a material to be classified onto a vibrating conveyor to transfer it and sending air from above to right beneath to cause the lightweight material to fall to the side of a conveyor. CONSTITUTION:A material to be treated thrown in from a throw-in hole 1 is transferred to a vibrating conveyor 3 through a rotary valve 2 in constant quantities. The wind from a fan 4 fitted right overhead flows sideward along a partition plate 5 fitted to the conveyor 3 at a right angle. Since crushed pieces receive vibration, and insulators, etc., of little specific gravity pushed out upward do not undergo much change in susceptibility to flying by the wind direction, they are carried on the wind flowing side ward and fall from the side end of the conveyor 3. On the other hand, since plastics receive the wind from the fan 9 on their wide surface, they are pushed onto the conveyor 3. And the metals are massive and have large specific gravity and remain on the conveyor even when they receive the wind and are moved to the right of the conveyor 3 and recovered.

9. 发明专利

JPH0751626A AIR CLASSIFICATION METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH0751626A
公开(公告)日：1995-02-28
申请号：JP20606793
申请日：1993-08-20
申请人： HITACHI LTD
发明人： SAKAGUCHI KAZUO , ODA CHIKAO , KIMURA NOBUO , UCHIYAMA KICHIJI , KOBAYASHI HIROAKI
IPC分类号： B07B4/04 , B29B17/00 , B29B17/04
摘要： PURPOSE:To classify a mixture of lighweight, mediumweight and heavyweight materials into each of them to recover it with a high rate of classification by reducing the volume of air flowing in a vertical zigzag passage in steps, feeding a mixture of materials of different specific gravity and separating and recovering materials to be treated of specific gravity determined according to the air volume. CONSTITUTION:A material to be treated, such as a crushed refrigerator is thrown in a throw-in hole 1 of a vertical zigzag passage 3 and the wind froman air sending port 2 is adjusted by air vent valves 4A, 4B so that it may be weaker as it goes upward. The wind velocity from the air vent valve 4B to a discharge port 10 is lowered so that obly the lightweight material may fly by it, and the lightweight material, such as a foamable insulant flying by the wind velocity is separated and recovered in an utmost lightweight material recovery pocket 5. That which has not been recovered falls through a material to be treated guide pass 9A, and only the plate- shaped plastics flies by the wind velocuty there and are separated and recovered in the 1st mediumweight material recovery pocket 6. Similarly, light metal and not flying heavy metal which do not fly are separated and recovered in the 2nd mediumweight material recovery pocket 7 and an utmost heabyweight material recovery pocket 8 respectively.

10. 发明专利

JPH06238239A AIR CLASSIFIER 失效
公开(公告)号：JPH06238239A
公开(公告)日：1994-08-30
申请号：JP3010293
申请日：1993-02-19
申请人： HITACHI LTD
发明人： SAKAGUCHI KAZUO , ODA CHIKAO , KIMURA NOBUO , KOBAYASHI HIROAKI , UCHIYAMA KICHIJI
IPC分类号： B07B4/04
摘要： PURPOSE:To provide an air classifier a mixture of the ground heat insulating material, plastic and metals of a refrigerator in a high classifying ratio. CONSTITUTION:A air classifier is constituted by connecting a vertical zigzag part 3 and a horizontal classifying part consisting of a plurality of partitioned recovery hoppers 10, 11, 12 and providing first and second blow ports 2, 4 sending air to both parts. By this constitution, a mixture of the ultralight matter such as a heat insulating material and lightweight, medium-weight and heavyweight matters such as plastic, aluminum and iron contained in waste can be classified and recovered in a high classification ratio.

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