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WO2017104260A1 - Dispositif de filtration - Google Patents

Dispositif de filtration Download PDF

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Publication number
WO2017104260A1
WO2017104260A1 PCT/JP2016/081159 JP2016081159W WO2017104260A1 WO 2017104260 A1 WO2017104260 A1 WO 2017104260A1 JP 2016081159 W JP2016081159 W JP 2016081159W WO 2017104260 A1 WO2017104260 A1 WO 2017104260A1
Authority
WO
WIPO (PCT)
Prior art keywords
filtration
tubular member
fluid
particles
filtration device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/081159
Other languages
English (en)
Japanese (ja)
Inventor
萬壽　優
近藤　孝志
順子 渡邉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of WO2017104260A1 publication Critical patent/WO2017104260A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/02—Inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M1/00—Apparatus for enzymology or microbiology
    • C12M1/12—Apparatus for enzymology or microbiology with sterilisation, filtration or dialysis means

Definitions

  • the present invention relates to a filtration device for filtering a filtration object contained in a fluid.
  • a cross-flow type filtration device is known as this type of filtration device (for example, see Patent Document 1: Japanese Patent Laid-Open No. 2013-210239).
  • a cross-flow type filtration device flows a fluid containing a filtration object along the surface of a filtration filter such as a hollow fiber membrane, and the fluid from which the filtration object is removed by passing through the filtration filter (hereinafter referred to as filtrate). It is a device that collects.
  • the filtration object captured on the surface of the filtration filter is untrapped by the fluid flow. Thereby, clogging of the filtration filter can be suppressed, the filtrate can be collected continuously for a longer time, and the filtration efficiency can be improved.
  • a fluid to be filtered by a filtration device there is a fluid containing two or more kinds of particles having different average particle sizes or weights.
  • the filtering device of Patent Document 1 cannot capture a specific type of particles from the fluid with the filtering filter.
  • an object of the present invention is to solve the above-described problem, and a filtration device capable of capturing a specific type of particles from a fluid containing two or more types of particles as a filtration target with a filtration filter. It is to provide.
  • a filtration device includes: A tubular member having a flow path through which a fluid containing an object to be filtered flows; A filtration filter having a metal porous membrane for filtering the filtration object; A filtration device comprising: The metal porous membrane is disposed in a recessed portion that is recessed so as to expand the flow path, and is disposed along the fluid flow direction. It is characterized by that.
  • a specific type of particles can be captured by a filtration filter from a fluid containing two or more types of particles as an object to be filtered.
  • the present inventors When the fluid containing two or more kinds of particles having different average particle diameters or weights is flowed to the flow path of the tubular member, the present inventors have a kind of particles having a small average particle diameter or light weight near the side wall of the tubular member. I found that there is a tendency to flow.
  • the present inventors provide a concave portion in the tubular member, and dispose a metal porous membrane as a filtration filter in the concave portion along the fluid flow direction, thereby reducing the average particle diameter or weight. It has been found that different types of particles are trapped by the metal porous membrane.
  • the present inventors have found that particles having a large average particle diameter or a heavy type of particles are not captured by the metal porous film and continue to flow in the flow path. Based on these points, the present inventors have reached the following invention.
  • a filtration device includes a tubular member having a flow path through which a fluid containing an object to be filtered flows, A filtration filter having a metal porous membrane for filtering the filtration object; A filtration device comprising: The metal porous membrane is disposed in a recessed portion that is recessed so as to expand the flow path, and is disposed along the fluid flow direction. It is characterized by that.
  • the said recessed part may be formed by denting a part of side wall of the said tubular member in the direction away from the tube axis
  • the filtration filter has a frame body that holds the outer peripheral portion of the metal porous membrane,
  • the frame is attached to a part of the side wall of the tubular member,
  • the recess may be formed by the frame.
  • tubular member may be a tubular member having a uniform inner diameter except for the concave portion.
  • the filtration object includes two or more kinds of particles having different average particle diameters,
  • the amount of the recesses is preferably at least 1 times the average particle size of the particles having the smallest average particle size.
  • the whole type of particles having the smallest average particle diameter can be positioned in the recess and captured by the filtration filter. Moreover, it is possible to suppress the particles captured by the filtration filter from being unbound by the fluid flow.
  • the filtration object includes two or more kinds of particles having different average particle diameters,
  • the amount of the recesses is preferably at least 5 times the average particle size of the particles having the smallest average particle size.
  • the recessed amount of the recessed portion is 50 ⁇ m or more.
  • a specific type of particles particles having a small average particle diameter or light weight
  • a filtration filter from a fluid containing two or more types of particles as an object to be filtered.
  • the amount of depression of the recess is 0.125 to 2 times the inner diameter of the tubular member.
  • the concave amount of the concave portion is 0.125 times or more the inner diameter of the tubular member, a vortex is generated in the concave portion, the interaction time (distance) between the fluid and the filtration filter is increased, and the filtration efficiency is improved.
  • the amount of recesses is more than twice, the fluid flowing through the tubular member becomes difficult to reach the metal porous membrane, and the vortex flow is reduced, resulting in poor filtration efficiency.
  • FIG. 1 is a schematic diagram illustrating a state in which an object to be filtered is filtered using the filtration device according to the embodiment of the present invention.
  • the filtration device 1 is a cross-flow type filtration device.
  • the filtration device 1 is configured to introduce a fluid 12 including an object to be filtered 11 from a fluid inlet 1a and discharge it from a fluid outlet 1b.
  • the filtration device 1 also filters a part of the fluid 12 flowing from the fluid inlet 1a to the fluid outlet 1b, and removes a fluid 13 (hereinafter referred to as filtrate) 13 from which the filtration object 11 has been removed by the filtration. It is comprised so that it may discharge
  • the fluid 12 including the filtration object 11 is placed in the fluid tank 2.
  • the fluid 12 in the fluid tank 2 is taken into the pump 3 through the pipe 21, and is supplied to the fluid inlet 1 a of the filtration device 1 through the pipe 22 by the pump 3.
  • the fluid 12 passing through the inside of the filtration device 1 and discharged from the fluid discharge port 1 b is returned to the fluid tank 2 through the pipe 23.
  • the fluid 12 circulates in the order of the fluid tank 2, the pipe 21, the pump 3, the pipe 22, the filtration device 1, and the pipe 23.
  • the pump 3 may be arranged in the path of the pipe 23 instead of between the pipe 21 and the pipe 22.
  • a closed filtration apparatus may be realized by using the fluid tank 2 or the filtrate tank 4 as a sealed container.
  • FIG. 2 is a schematic cross-sectional view of the filtration device 1.
  • the filtration device 1 includes a tubular member 31 having a flow path 31 a through which the fluid 12 including the filtration object 11 flows, and a filtration filter 32 that filters the filtration object 11.
  • the tubular member 31 is, for example, a cylindrical member.
  • the tubular member 31 has a recess 5 that is recessed so as to enlarge the flow path 31a. That is, the recessed part 5 is a part which expands the flow path 31a.
  • the recess 5 is formed by recessing a part of the side wall of the tubular member 31 in a direction away from the tube axis A1.
  • a step is formed on the side wall of the tubular member 31 by the recess 5. By this step, the flow of the fluid 12 in the vicinity of the recess 5 is disturbed, and a flow having a velocity component (turbulent flow) is generated in a direction intersecting with the extending direction of the tube axis A1.
  • the tubular member 31 is formed of a tubular member having a uniform inner diameter except for the recess 5 so that turbulent flow is unlikely to occur except in the vicinity of the recess 5.
  • tubular member 31 an arbitrary cross-sectional shape such as a square or an ellipse may be used.
  • the material of the tubular member 31 include stainless steel, silicon resin, PVDF (Teflon: registered trademark), vinyl chloride, glass, butadiene-free resin, and the like.
  • a coating material may be applied so that the object to be filtered does not easily adhere to these materials.
  • a pipe 24 is connected to the recess 5.
  • a filtration filter 32 is arranged in the recess 5 so as to filter the fluid 12 flowing to the pipe 24.
  • the filtration filter 32 includes a metal porous film 32a that filters the object to be filtered 11, and a frame body 32b that holds the outer periphery of the metal porous film 32a.
  • the metal porous film 32a is disposed in the recess 5 and along the flow direction of the fluid 12.
  • the flow direction of the fluid 12 is parallel to the extending direction of the tube axis A1.
  • the metal porous film 32a is disposed in parallel with the extending direction of the tube axis A1.
  • the filtration object 11 is a biological substance contained in the liquid.
  • the “biological substance” means a substance derived from a living organism such as a cell (eukaryotic organism), a bacterium (eubacteria), or a virus.
  • cells eukaryotes
  • examples of cells include eggs, sperm, induced pluripotent stem cells (iPS cells), ES cells, stem cells, mesenchymal stem cells, mononuclear cells, single cells, cell masses, suspension cells, and adhesions.
  • sex cells nerve cells, leukocytes, lymphocytes, cells for regenerative medicine, autologous cells, cancer cells, circulating cancer cells (CTC), HL-60, HELA, and fungi.
  • bacteria examples include gram positive bacteria, gram negative bacteria, Escherichia coli, and tuberculosis bacteria.
  • virus examples include DNA virus, RNA virus, rotavirus, (bird) influenza virus, yellow fever virus, dengue fever virus, encephalitis virus, hemorrhagic fever virus, and immunodeficiency virus.
  • the filtration object 11 includes two types of filtration objects 11a and 11b having different average particle diameters.
  • the flow rate of the fluid 12 is relatively fast (high density) on the center side of the flow path 31 a, and the flow rate of the fluid 12 is near the side wall of the tubular member 31.
  • the types of particles 11a having a large average particle diameter gather on the central side to form a high-density portion
  • the types of particles 11b having a small average particle size gather on the side wall to form a low-density portion.
  • the type of particles 11a having a large average particle diameter tend to flow in the center side of the flow path 31a.
  • the type of particles 11b having a small average particle diameter tends to flow near the side wall of the flow path 31a. For this reason, the types of particles 11a having a large average particle diameter are not captured by the metal porous film 32a and continue to flow in the flow path 31a.
  • the types of particles 11b having a small average particle diameter contribute to the turbulent flow described above, flow toward the metal porous film 32a, and are easily captured by the metal porous film 32a.
  • the metallic porous membrane 32a is a porous membrane that separates biological substances.
  • FIG. 3 is an enlarged perspective view of a part of the metal porous film 32a.
  • the metal porous film 32a has a first main surface 32c and a second main surface 32d that face each other.
  • the metal porous film 32a is provided with a plurality of through holes 32e penetrating the first main surface 32c and the second main surface 32d.
  • the through hole 32e separates a biological material from the liquid.
  • the shape and size of the through-hole 32e are appropriately set according to the shape and size of the biological material.
  • the through holes 32e are arranged at regular intervals or periodically, for example.
  • the shape of the through hole 32e is, for example, a square when viewed from the first main surface 32c or the second main surface 32d side of the metal porous film 32a.
  • the size of the through hole 32e is, for example, from 0.1 ⁇ m to 500 ⁇ m in length and from 0.1 ⁇ m to 500 ⁇ m in width.
  • the interval between the through holes 32e is, for example, greater than 1 time and less than or equal to 10 times, more preferably less than or equal to 3 times the opening diameter of the through holes 32e.
  • the aperture ratio of the through-hole 32e in the metal porous film 32a is, for example, 10% or more.
  • Examples of the material of the metal porous film 32a include gold, silver, copper, platinum, nickel, stainless steel, palladium, titanium, cobalt, and alloys thereof.
  • the metal porous film 32a has a diameter of, for example, 8 mm.
  • the thickness of the metal porous film 32a is, for example, not less than 0.05 ⁇ m and not more than 100 ⁇ m, and preferably not less than 0.1 ⁇ m and not more than 50 ⁇ m.
  • the outer shape of the metal porous film 32a is, for example, one of a circle, an ellipse, and a polygon. In the present embodiment, the metal porous film 32a has a circular outer shape.
  • the frame body 32b is formed in an annular shape (for example, an annular shape).
  • the material of the frame 32b include metals such as duralumin and aluminum, and resins such as polyethylene, polystyrene, polypropylene, polycarbonate, polyacetal, and polyetherimide.
  • the width of the frame 32b is, for example, 0.9 mm.
  • the thickness of the frame body 32b is, for example, 20 ⁇ m.
  • the metal porous membrane 32a is disposed in the recessed portion 5 that is recessed so as to enlarge the flow path 31a, and is disposed along the flow direction of the fluid 12. ing.
  • the filtration filter 32 can capture the types of particles having a small average particle size from among fluids containing two or more types of particles having different average particle sizes as the filtration object.
  • the amount of dents in the recesses 5 is at least one times the average particle size of the type of particles 11b having the smallest average particle size. According to this configuration, the entire type of particles 11 b having the smallest average particle diameter can be positioned in the recess 5 and captured by the filtration filter 32. Further, it is possible to prevent the particles 11 b captured by the filtration filter 32 from being unbound by the flow of the fluid 12.
  • the amount of recesses in the recesses 5 is preferably 5 times or more the average particle size of the type 11b having the smallest average particle size. According to this configuration, the type of particles 11b having the smallest average particle diameter can be positioned in the recess 5 and captured by the filtration filter 32 more reliably. Further, it is possible to further suppress the particles 11b captured by the filtration filter 32 from being unbound by the flow of the fluid 12.
  • the average particle diameter of the type of particles 11b having the smallest average particle diameter as the filtration object 11 is assumed to be about 3 ⁇ m to 10 ⁇ m, for example.
  • the recess amount of the recess 5 is preferably 15 ⁇ m to 50 ⁇ m or more. According to this configuration, a specific type of particles (particles having a small average particle diameter or a light weight) from the fluid 12 including two or more types of particles 11a and 11b as the filtration object 11 are more reliably obtained. It can be captured by the filtration filter 32.
  • the recess amount of the recess 5 is 0.125 times or more the inner diameter of the tubular member 31. According to this configuration, an eddy current is generated in the recess 5, the interaction time (distance) between the fluid 12 and the filtration filter 32 is increased, and the filtration efficiency is improved. In addition, it is more preferable that the amount of depression of the recess 5 is 0.25 times or more the inner diameter of the tubular member 31. According to this configuration, a large eddy current is generated in the recess 5, the interaction time (distance) between the fluid 12 and the filtration filter 32 is further increased, and the filtration efficiency is further improved.
  • the recessed amount of the recessed part 5 is 2 times or less of the internal diameter of the tubular member 31.
  • Example 1 Next, the result of filtering the object to be filtered from the fluid using the filtration device according to the embodiment of the present invention will be described.
  • a PBS solution (phosphate buffered saline) containing cells HL60 and erythrocytes is used as the fluid 12, and liquid components and erythrocytes are filtered from the PBS solution by the filtration filter 32 and the cells HL60 are captured.
  • the PBS solution contained 1 ⁇ 10 5 cells HL60 having an approximate spherical shape with a diameter of about 12 ⁇ m and 1 ⁇ 10 5 red blood cells having an approximate disc shape with a diameter of about 7 ⁇ m, and the total amount of the PBS solution was 50 ml.
  • the metal porous film 32a a nickel mesh film having a circular outer shape, a thickness of 1.0 ⁇ m, a diameter of 7.8 mm, and a mesh structure in a range of 6 mm in diameter from the center was used.
  • the mesh structure was a square lattice arrangement in which square through holes with sides of 4.5 ⁇ m were arranged at a pitch of 6.5 ⁇ m.
  • the metal porous film 32a was arranged so that the main surface on the flow channel 31a side was located at a distance of 1 mm from the flow channel 31a.
  • a tube having an inner diameter of 2 mm was used as the tubular member 31 .
  • the pump 3 was driven for about 30 minutes so that the PBS solution flowed through the flow path 31a in the tubular member 31 at a flow rate of 240 ml per minute. Thereafter, the filtration filter 32 was taken out and observed with a microscope. As a result, it was confirmed that about 1 ⁇ 10 4 pieces of red blood cells are trapped in a metal membrane 32a. In addition, as a result of observing the filtrate 13 with a microscope, red blood cells were confirmed, but the presence of the cell HL60 could not be confirmed.
  • the filtration filter 32 captures the types of particles having a small average particle size from the fluid containing two or more types of particles having different average particle sizes as the filtration target. Confirmed that you can.
  • the recess 5 is formed by recessing a part of the side wall of the tubular member 31 in the direction away from the tube axis A1, but the present invention is not limited to this.
  • a through hole may be provided in the tubular member 31, a frame body 32 b may be fitted into the through hole, and the concave portion 5 may be formed by the frame body 32 b. That is, the frame body 32b may be attached to a part of the side wall of the tubular member 31, and the recess 5 may be formed by the thickness of the frame body 32b.
  • the metal porous film 32a can be arranged in the recess 5 and along the flow direction of the fluid 12.
  • the filtration object 11 includes two or more kinds of particles having different average particle diameters
  • the present invention is not limited to this.
  • particles having different weights tend to flow in the central side of the channel 31a or near the side walls. That is, the heavy type of particles tend to flow in the center of the flow path 31a.
  • light-weight particles tend to flow near the side wall of the flow path 31a.
  • the filtration filter 32 captures the light-weight type particles from the fluid containing two or more types of particles having different weights as the filtration object 11. Can do.
  • the metal porous film 32a is arranged in parallel with the extending direction of the tube axis A1, but the present invention is not limited to this.
  • the metal porous film 32a may be disposed so as to be inclined with respect to the extending direction of the tube axis A1 within a range that does not substantially obstruct the flow of the fluid 12. That is, the metal porous film 32a only needs to be disposed substantially parallel to the extending direction of the tube axis A1.
  • the tubular member 31 has a straight cylindrical shape (straight tube shape), but the present invention is not limited to this.
  • the tubular member 31 should just be comprised so that the fluid 12 can be flowed along the metal porous membrane 32a.
  • the portion of the tubular member 31 on the fluid introduction port 1a side or fluid discharge port 1b side is configured to bend in a direction intersecting with the extending direction of the tube axis A1. May be.
  • one filter 32 is provided for one tubular member 31, but the present invention is not limited to this.
  • a plurality of (for example, three) filtration filters 32 may be provided for one tubular member 31.
  • the plurality of filtration filters 32 be arranged in the extending direction of the tube axis A1, as shown in FIG.
  • the plurality of filtration filters 32 may have different opening diameters of the through holes 32e (see FIG. 3) of the respective metal porous membranes 32a. According to this configuration, even if the fluid 12 includes a plurality of filtration objects 11 (for example, particles 11a and 11b) having different sizes, the filtration objects 11 can be classified.
  • the fluid 12 is a liquid, but the present invention is not limited to this.
  • the fluid 12 may be a gas, and the filtration target 11 may be fine particles contained in the gas.
  • the fine particles are, for example, industrial powder materials and PM2.5.
  • the present invention can capture a specific type of particles from a fluid containing two or more types of particles as an object to be filtered with a filtration filter, it is particularly suitable for a filtration device that filters biological substances contained in a liquid. Useful.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Biotechnology (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Microbiology (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Medicinal Chemistry (AREA)
  • Filtering Materials (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention fournit un dispositif de filtration qui permet de capturer à l'aide d'un filtre écran des particules d'une sorte spécifique à partir d'un fluide contenant des particules de deux sortes ou plus en tant que substance objet de la filtration. Le dispositif de filtration (1) de l'invention est équipé : d'un élément tubulaire (31) qui possède un trajet d'écoulement (31a) au travers duquel circule un fluide (12) contenant une substance objet de la filtration (11) ; et du filtre écran (32) qui possède une membrane poreuse en métal (32a) au travers de laquelle la substance objet de la filtration (11) est filtrée. La membrane poreuse en métal (32a) tout en étant disposée à l'intérieur d'une partie en creux (5) creusée de manière à élargir la membrane poreuse en métal (32a), est disposée de manière à suivre la direction d'écoulement du fluide (12).
PCT/JP2016/081159 2015-12-14 2016-10-20 Dispositif de filtration Ceased WO2017104260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-243477 2015-12-14
JP2015243477A JP2019022866A (ja) 2015-12-14 2015-12-14 濾過装置

Publications (1)

Publication Number Publication Date
WO2017104260A1 true WO2017104260A1 (fr) 2017-06-22

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57167712A (en) * 1981-04-10 1982-10-15 Hitachi Ltd Strainer
JPH09290116A (ja) * 1996-04-25 1997-11-11 Takasago Thermal Eng Co Ltd 低圧力損失型エアフィルタ
WO2007135226A1 (fr) * 2006-05-24 2007-11-29 Valtion Teknillinen Tutkimuskeskus Procédé de prélèvement d'un échantillon liquide
WO2009034841A1 (fr) * 2007-09-12 2009-03-19 Nippon Oil Corporation Filtre de purification d'air et ensemble de filtre de purification d'air
JP2010100183A (ja) * 2008-10-24 2010-05-06 Komatsu Ltd エアフィルタカバー
JP2012045498A (ja) * 2010-08-27 2012-03-08 Yanagawa Engineering Co Ltd 濃縮装置
WO2012068374A2 (fr) * 2010-11-17 2012-05-24 Md Innovate Dispositifs de collecte d'aérosol et procédés d'utilisation
JP2013082005A (ja) * 2011-09-30 2013-05-09 Metawater Co Ltd スクリュープレス脱水装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57167712A (en) * 1981-04-10 1982-10-15 Hitachi Ltd Strainer
JPH09290116A (ja) * 1996-04-25 1997-11-11 Takasago Thermal Eng Co Ltd 低圧力損失型エアフィルタ
WO2007135226A1 (fr) * 2006-05-24 2007-11-29 Valtion Teknillinen Tutkimuskeskus Procédé de prélèvement d'un échantillon liquide
WO2009034841A1 (fr) * 2007-09-12 2009-03-19 Nippon Oil Corporation Filtre de purification d'air et ensemble de filtre de purification d'air
JP2010100183A (ja) * 2008-10-24 2010-05-06 Komatsu Ltd エアフィルタカバー
JP2012045498A (ja) * 2010-08-27 2012-03-08 Yanagawa Engineering Co Ltd 濃縮装置
WO2012068374A2 (fr) * 2010-11-17 2012-05-24 Md Innovate Dispositifs de collecte d'aérosol et procédés d'utilisation
JP2013082005A (ja) * 2011-09-30 2013-05-09 Metawater Co Ltd スクリュープレス脱水装置

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