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1. 发明专利

JPH09313899A FLUID SEPARATOR 失效
公开(公告)号：JPH09313899A
公开(公告)日：1997-12-09
申请号：JP12739196
申请日：1996-05-22
申请人： NITTO DENKO CORP
发明人： SAKKA TOMIO
IPC分类号： B01D63/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid separator in which a space is saved and fluid leakage is prevented. SOLUTION: Both the end faces of plural cylindrical cases 12a, 12b are closed by end plates 3, 7 to house membrane elements 1a, 1b inside the cylindrical cases 12a, 12b respectively. In one end plate 3, a original liquid inflow path 5, a concentrate outflow path 16 and a permeated liquid outflow path 13 are formed, and in the other end plate 7, a connecting flow passage 9 for connecting a second liquid chamber 8 in which the membrane element 1a is housed and a third liquid chamber 10 in which the membrane element 1b is housed are formed. The two membrane elements 1a, 1b are connected in series to constitute a fluid separator.

2. 发明专利

JPH06170184A FILTER 失效
公开(公告)号：JPH06170184A
公开(公告)日：1994-06-21
申请号：JP35080692
申请日：1992-12-05
申请人： NITTO DENKO CORP
发明人： HIMENO MAKOTO , SAKKA TOMIO , HAYAMA HIDEKI
IPC分类号： B01D63/00 , B01D63/10
摘要： PURPOSE:To obtain a filter excellent in back pressure resistance, capable of well preventing the stagnation of a treated liquid and air and capable of easily venting air bubles on the side of a filtrate by holding a spiral wound member between a core and a cover member and forming a raw soln. passage as a straight passage having a uniform cross section. CONSTITUTION:Three edge end parts excepting one end edge part 111 of a sheet like membrane 11 having fluid barrier sheets 13a, 13b superposed on both surfaces thereof are sealed by the fluid barrier sheet 13a on the single surface side of the membrane 11 and three edge end parts excepting the other edge end part 114 of the sheet like membrane 11 are sealed by the fluid barrier sheet 13b on the other surface side of the membrane 11. In this sealed state, the superposed sheet 1 is spirally wound around a core 21 going from one end of the sheet like membrane 11 to the other end thereof and the outer periphery of this spirally wound member is covered with a cover member 31 and a raw soln. supply port 311 is provided to one end of the wound member and a filtrate taking-out port 321 is provided to the other end thereof. As a result, a filter excellent in back pressure resistance and capable of well preventing the stagnation of a treated soln. and air can be obtained.

3. 发明专利

JPH1015363A PRESSURE VESSEL FOR MEMBRANE ELEMENT AND DEVICE USING PRESSURE VESSEL 失效
公开(公告)号：JPH1015363A
公开(公告)日：1998-01-20
申请号：JP17884996
申请日：1996-07-09
申请人： NITTO DENKO CORP
发明人： SAKKA TOMIO
IPC分类号： B01D63/10 , B01D65/00
摘要： PROBLEM TO BE SOLVED: To provide a pressure vessel which facilitate easy and rapid replacement of a membrane element and a membrane separation device using this pressure container. SOLUTION: An end plate 3 is fixed to one of the open end faces of a hollow cylindrical case 2 with a bolt 3a and an end plate 4 is fixed to the other open end face with a bolt 4a. In addition, a stock solution port 5 is formed on the outer peripheral face, on the end plate 3 side, of the cylindrical case 2, and a concentrate port 9 and a permeating liquid port 11 are formed on the outer peripheral face of the end plate 4 side. The permeating liquid port 11 is connected to a collection pipe 7 for a membrane element 31 through a permeating liquid guide-out passage 10 formed inside the end plate 4. When using this pressure container 1, stock solution piping is connected to the stock solution port 5 formed in the cylindrical case 2, and concentration piping is connected to the concentrate port 9, and further, permeating liquid piping is connected to the permeating liquid port 11. A membrane element 31 stored in the pressure container 1 is replaced by removing the end plates 3, 4 without dismantling the piping.

4. 发明专利

JPH06198142A FILTER FOR LIQUID FILTRATION 失效
公开(公告)号：JPH06198142A
公开(公告)日：1994-07-19
申请号：JP36096792
申请日：1992-12-29
申请人： NITTO DENKO CORP
发明人： SAKKA TOMIO , HAYAMA HIDEKI , HIMENO MAKOTO
IPC分类号： B01D63/08 , B01D65/00
摘要： PURPOSE:To release air upward to prevent the retention of air by making through holes for vent holes for gas remaining in a gap for an original liquid pass in members and an upper end plate. CONSTITUTION:In a laminated element E, membrane members 2 where membranes 22 are provided on both the upper and lower faces of a membrane supporting plate 21 are connected to each other at the central parts and also laminated in the vertical directions leaving gaps 23 between the membrane surfaces. An upper end plate 24 and a lower end plate 25 are connected to the uppermost and the lowermost membrane members respectively. The gaps 23 between the membrane members 2 and between the membrane member 2 and the end plate 24 are made to be an original liquid pass and a pass 26 for collecting a filtrate passed through the membrane 22 of each membrane member 2 is installed in the center of the interior. And through holes 31 for vent are made in the membrane members 2 near the central part of them and facing the inner parts of the original liquid pass gaps 23 and a through hole 32 is made in the upper plate 24 near the center of it. Consequently since there remains no air, the original liquid is not cut off and the membranes are effectively used.

5. 发明专利

JPH05123544A FILTER DEVICE 失效
公开(公告)号：JPH05123544A
公开(公告)日：1993-05-21
申请号：JP31534191
申请日：1991-11-02
申请人： NITTO DENKO CORP
发明人： HAYAMA HIDEKI , SAKKA TOMIO , HIMENO MAKOTO
IPC分类号： B01D63/08 , B01D65/00
摘要： PURPOSE:To always ensure a sufficient filtering area by a method wherein a filter element wherein disc-shaped permeable membrane units are arranged is received in a case having a stock solution inlet and a gas vent port is provided to the case to constitute a filter device main body and a transmitted liquid back flow device pushing out the gas accumulated in the disc-shaped permeable membrane unit is provided to the main body. CONSTITUTION:A filter element 1 consisting of laminated disc-shaped permeable membrane units and having a transmitted solution port provided therein is received in a case 2 having a stock solution inlet 21 and a gas vent port 22 is provided to the case 2 to constitute a filter device main body A. A transmitted solution back flow device B pushing out the gas accumulated in the disc- shaped permeable membrane units is provided to the main body A. As a result, the accumulation of gas between the permeable membrane units is prevented even when a gas generating raw solution is used and a sufficient filtering area can be always ensured.

6. 发明专利

JPH09155167A PLEATS TYPE MEMBRANE ELEMENT 失效
公开(公告)号：JPH09155167A
公开(公告)日：1997-06-17
申请号：JP31928095
申请日：1995-12-07
申请人： NITTO DENKO CORP
发明人： HAYAMA HIDEKI , SAKKA TOMIO
IPC分类号： B01D63/14 , B01D69/02
摘要： PROBLEM TO BE SOLVED: To prevent that a separation membrane falls into the hole of a cylindrical member to be damaged. SOLUTION: A net 9 composed of a fluoroplastic, for example, a tetrafluoroethylene/perfluoroalkyl vinyl ether copolymer (PFA) is mounted on the outer peripheral surface of an inside cylindrical member 3 having a large number of holes 8 formed thereto and an element part A consisting of a hill or trough form folding separation membrane 1 and membrane support members 2a, 2b is inserted in the gap between inside and outside cylindrical members 3, 4 and circular fixing members 5a, 5b are attached to both end parts to be sealed by a resin.

7. 发明专利

JPH08168656A MEMBER FOR ASSEMBLING FILTER ELEMENT 失效
公开(公告)号：JPH08168656A
公开(公告)日：1996-07-02
申请号：JP33331694
申请日：1994-12-15
申请人： NITTO DENKO CORP , TSUCHIYA SEISAKUSHO
发明人： HAYAMA HIDEKI , NAKAGOME KEISUKE , SAKKA TOMIO , YAMAGISHI TAKASHI
IPC分类号： B01D63/00
摘要： PURPOSE: To surely eliminate the contamination of liquid to be filtered due to powders produced by sliding friction between each membrane and a filter fluid passage holding supporter body in a filter element assembling member which has the supporter body between two membranes. CONSTITUTION: A filter fluid passage holding supporter body 2 is provided between two membranes 1, 1, and the body 2 and each of the membranes 1 are, connected together partially or over entire surfaces thereof so that a gap therebetween has a fluid permeating function and a filter fluid passage. As the body 2, a net made of synthetic resin of 10-100 meshes and having a thickness of 0.2-2.0mm or a porous body of synthetic resin or non-woven fabric having void content of 20% or more and a thickness of 0.2-2.0mm can be used, and a synthetic resin net or a synthetic resin porous body or a non-woven fabric 5 also may be bonded to the outer surface of each of the membranes 1.

8. 发明专利

JPH0824584A LIQUID CHEMICAL-CIRCULATED FILTER APPARATUS 失效
公开(公告)号：JPH0824584A
公开(公告)日：1996-01-30
申请号：JP16374594
申请日：1994-07-15
申请人： NITTO DENKO CORP
发明人： HAYAMA HIDEKI , HIMENO MAKOTO , SAKKA TOMIO
IPC分类号： B01D61/14 , B01D61/22 , B01D63/00 , B01D63/08 , B01D65/00
摘要： PURPOSE:To minimize the lowering of filtration rate even in the liq. chemical- circulated filtration wherein the amt. of gas generated is fluctuated by providing the apparatus with >=1 filter for a large amt. of gas generated and >=1 filter for a small amt. of gas generated including the case where gas is not generated, in parallel in a circulating line, and an automatic valve for switching the feed lines to the filters. CONSTITUTION:The apparatus for circulating and filtering a liq. chemical with the amt. of gas generated fluctuated has a chemical circulating pump 5 and filters 1A and 1B. The circulating line is provided with >=1 filters 1A and 1B respectively for a large amt. of gas generated and for a small amt. of gas generated including the case where the gas is not generated, in parallel and automatic valves 2A and 2B for switching the feed lines to the filters. The pore diameter of the filter 1A is made larger than that of the filter 1B. Consequently the filtration rate is hardly lowered even in the chemical-circulated filtration wherein the amt. of gas generated is fluctuated, and the concn. of the fine particle in the circulated chemical is rapidly lowered.

9. 发明专利

JPH05137911A FLUID FILTER 失效
公开(公告)号：JPH05137911A
公开(公告)日：1993-06-01
申请号：JP33612091
申请日：1991-11-25
申请人： NITTO DENKO CORP
发明人： SAKKA TOMIO , HAYAMA HIDEKI , HIMENO MAKOTO
IPC分类号： B01D27/00 , B01D29/11 , B01D46/42 , B01D63/00
摘要： PURPOSE:To obtain a fluid filter capable of easily preventing the retention of the permeated fluid by providing a bypass in the gap communicating with the permeated fluid side between the permeated fluid outlet pipe of the filter element and a filter element connecting hole and mounting a filter medium in the bypass. CONSTITUTION:The permeated fluid outlet pipe 13 of a filter element 1 is freely detachably inserted into the filter element connecting hole 223 through an O ring 5 and connected. As a result, a gap is formed between the outlet pipe 13 of the element 1 and the hole 223. Accordingly, a bypass 3 is provided between the outer surface of a boss 222 and the inner part of the hole 223, and a filter medium 4 is mounted at the inlet of the bypass 3. Since the filtered fluid flows through the inlet gap (a), a clean fluid is circulated.

10. 发明专利

JPH0494724A METHOD OF IMPROVING WATER PERMEABILITY OF POROUS PLASTIC FILM 失效
公开(公告)号：JPH0494724A
公开(公告)日：1992-03-26
申请号：JP21220990
申请日：1990-08-10
申请人： NITTO DENKO CORP
发明人： MATSUMOTO KENJI , SAKKA TOMIO
IPC分类号： B01D67/00 , B01D69/02 , B01D71/32
摘要： PURPOSE:To improve water permeability of a porous plastic film, especially a porous fluorinated olefin polymer film, by first subjecting the porous plastic film to sputter-etching and then to corona discharge treatment. CONSTITUTION:A porous plastic film, especially a porous fluorinated olefin polymer such as polytetrafluoroethylene, etc., is first subjected to etching. By the etching effect, the structure in the surface layer of

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