• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Filter pads, which are made inherently stable by binders and by removal of the binders can be converted in packings to be maintained under substantially constant surface pressure between rigid filter brackets, are produced first as molded bodies from a suspension of filter aids in liquid by depositing granular, fibrous, or fiber-containing filter aids or mixtures of those filter aids in a casting mold, there being used high rates of flow while avoiding turbulences, and adding binders to the suspension so that the molded body can be stabilized by activation of the binder while drying. It is possible in this process also to manufacture multi-layered filter pads, it having been surprisingly found in those multi-layered filter pads that the layer assembly is kept intact during the filtration even in the filter packing that no longer contains binders. The filter pads or the filter packings produced therefrom according to the invention can, when used, and after reflushing and regeneration operations, finally be utilized, after being replaced, as filter aids in the deposit filtration process.
    公开号:SU1625320A3
    申请号:SU853857903
    申请日:1985-02-01
    公开日:1991-01-30
    发明作者:Шаффт Хельмут
    申请人:Хельмут Шаффт (DE)；
    IPC主号:
    专利说明:

    The invention relates to methods for manufacturing filter elements used in filters for cleaning liquids, preferably beverages, and can be used, in particular, in the food industry.
    The purpose of the invention is to improve the filtering properties and ensure the durability of the filter element, as well as the uniform distribution of materials with specific gravities of 1.15-2.4 g / cm.
    FIG. 1 shows a diagram of an installation for manufacturing a filter element; in fig. 2 - filter element; in fig. 3 shows section A-A in FIG. 2, with layers of fibrous filter material; in fig. 4 - the same, with layers of granular filter material; in fig. 5 - the same, with layers of a mixture of fibrous and granular filtering materials; in fig. 6 - filter with filter elements made according to the proposed method, a longitudinal section; see 7-filter, longitudinal section.
    The plant for manufacturing filtering elements consists of tanks 1-7 for various filtering materials or feeders, each of which is connected to a common collecting pipeline 9 through an adjustable piston pump 8, to the beginning of which a liquid suspension 11 is connected via a performance-controlled vane pump 10. The material collecting piping 9 leads to a mixing device, for example, a mixer 12, from which the supply piping 13 for the formed suspension leads to a casting mold 14. The casting mold 14 in this case is made conical and has a casting inlet 15 on the top of the cone and a casting cover 16 a mold, under which a hollow space 17 is provided, in which a filtering element 18 is formed. The hollow space of the mold is bounded below by washing out
    ABOUT
    you ate with you
    about
    W
    plate 19, on the edge of which there is an annular collection duct 20. To this annular collection duct 20 a liquid discharge pipe 21 is connected, which is returned to the container 11 for a liquid suspension.
    The filter materials in the containers can be stored in a dry state or preferably in a paste-like form, pre-mixed with the alluvial fluid.
    Example.
    A water-soluble binder material, which may be, for example, glucose, dextrin, gelatin, silicates, or mixtures of these substances, is mixed in under the liquid.
    If the binder material is dissolved in the washed liquid, additional supply of the binder material to the washed liquid is not required. From time to time, it is necessary to replenish the supply of washed liquid with the binder material dissolved in it, since the filter element formed in the mold 14 takes out a certain amount of washed liquid containing the binder when removed from the mold 14.
    From one or more containers 1-7, with the help of a piston pump 8, the material is injected in the required quantity into the collecting pipeline 9, i.e. into the washed liquid directed to the circuit. In the mixer 12, there is then intensive mixing so that there is a well-mixed suspension of filter materials in the supply line. This slurry is distributed in the hollow space 17 of the mold, while being contained in the slurry, the filter material is washed with a lam- ip flow on a wash plate 19 or on a layer of filter material already formed on the wash plate 19.
    During operation, the circuit of the washed liquid with the required laminar flow rate through the mold 14 is supported by means of a paddle pump 10. Depending on the type of filter material, the flow rate is maintained in the range of 5 to 500 g l / m h. Light filter material, for example, thin kieselguhr, thin perlite and very short fiber cellulose are washed at low speeds (5 g l / m2 h), at such speed the washed material reaches the mold and is not washed out of it. The coarser the filter material, the higher the flow rate must be. Very coarse diatomaceous earth with particle size up to 500 microns and a specific weight of 2.4 g / cm.
    agglomerated diatomaceous earth with a specific weight of 2.4 g / cm3, cellulose fibers with a specific weight of 1.5 g / cm and a length of fibers up to 50,000 µm, short cut polyester fibers with a specific weight of 1.38 g / cm3 and other similar filter fibers are washed during Laminar flow rates of 100 to 500 g L / m. As this rate decreases, such filter material cannot be transported and is deposited in the feed system. The practically free filter material is then directed through the collecting annular channel 20 to the return conduit 21, and then into the tank 11. If the binder material is not dissolved in the slurry but dispersed, then it also remains in the casting process in the mold as bonded material in the washed layer. In this case, either the bonding material should be added in a predetermined amount to the tank 11 permanently, or an additional feeder for the bonding material should be connected to the collecting pipeline 9.
    To form filtering elements with several different layers, at successive intervals of time from different containers 1-7, with the help of corresponding piston pumps 8, different filtering materials are introduced into the collecting pipeline 9 at different periods of time.
    When a monolayer or multilayer filter element 18 is thus created in the hollow space 17 of the mold 14, the cover 16c of the mold 14 is removed, the formed filter element 18 is removed and dried in a drying oven under heat to cure the binder. If it is necessary to pre-fix the filter element 18 in order to give it the strength necessary for extraction from the mold 14, this can be done by blowing it with a compressed gas, for example, air. Removing the filter element 18 from the mold 14 can be carried out by appropriate means, which for example may be provided on the lid 16 or be self-contained. The final drying is carried out in a drying oven at about 140 ° C.
    Next, a porous membrane permeable to liquid and gas, but not permeable to the filtering material and resistant to the filtrate, such as cloth, is applied to the inlet and / or outlet sides of the filter element.
    Examples of the implementation of the filter elements are presented in FIG. 2 to 5. In FIG. 2 shows a truncated cone filter element. Such a dried filter element is placed in a porous casing 22, for example made of cloth, and a tightening rim 23 is placed outside, which can be attached to the fabric, for example, by means of a burdock compound.
    FIG. 3-5 shows multilayer filters. For such filter elements, the layers in the direction shown by arrow B are made consistently thinner, starting from one, mainly distributing filter material, a very coarse layer 24 in the foundry in the opposite direction to the filtering direction. The thinnest layer 25 is located between the mid-coarse layers 26 separating the thin layer 25 and the coarse layers 24 and 27.
    The dried filter elements in the shells are placed between the rigid holders 28. These holders 28 in the present example are made in the form of conical ring plates, which when placed on top of each other form intermediate prostates. In each intermediate space between two adjacent holders 28, there is one filter element 18, while the porous casing 22 rests on the outer surface of the adjacent holder 28 and covers the outer edges of the formed filter blocks.
    The feet of the holders and filter elements 18 are placed in the filter housing 29 and the binder is removed. For this, the filter housing 29 is filled with water, preferably hot, or with a mixture of water and wet steam and forced, for example, hot water through filter elements. After this treatment, the filter is ready for operation.
    权利要求:
    Claims (12)
    [1]
    Claim 1. Method of making filtering elements, including mixing the filtering material with a water-soluble binder, shaping the filtering elements of a given shape, drying, placing the filtering element in the filter housing between rigid substrates and then removing the binder, characterized in that, in order to improve the filtering properties and durability of the filtering element, granular, fibrous, fiber-containing materials or a combination of these materials are used as the filtering material The rials and the shaping of the filter element are carried out in a flow-through mold by flushing the surface with layers of mixtures of these various filter materials with a bonding laminar flow at a speed of 5 to 500 gl l / m2 h.
    [2]
    2. The method according to claim 1, characterized in that the binder is used
    glucose, dextrin, gelatin, silicates or mixtures of these substances.
    [3]
    3. A method according to claim 1, characterized in that, in order to ensure uniform distribution of materials with specific gravities of 1.15 to 2.4 g / cm3, the laminar flow rate is maintained within 100-500 gl / m 2 h.
    [4]
    4. A method according to claim 1, characterized in that the layers in the casting mold are washed in
    direction opposite to the direction of filtration.
    [5]
    5. A method according to claim 1, characterized in that the filter element is dried in a mold when purged with gas.
    [6]
    6. Method according to paragraphs. 1 and 5, characterized in that the purge is carried out with heated gas.
    [7]
    7. The method according to claim 1, wherein the filter element is dried in a drying oven before the binder is hardened.
    [8]
    8. A method according to claim 1, characterized in that the filter element is dried in a mold by blowing gas, removed from the mold and transferred to a drying oven, in which drying is carried out until the binder is completely cured.
    [9]
    9. Method pop. 1, characterized in that after drying on the outlet side
    the filter element is applied a layer permeable to liquid and gas, but not permeable to filter material and resistant to the filtrate.
    [10]
    10. The method according to paragraphs. 1 and 9, characterized in that a layer permeable to liquid and gas but not permeable to filtering material is applied to the inlet side of the filtering material
    and resistant to filtrate.
    [11]
    11. A method according to claim 1, characterized in that a protective sheath is placed on the edges of the dried filter element.
    [12]
    12. The method according to paragraphs. 1 and 11, which also means that the dried filter element is placed in a porous casing, preferably made of cloth.
    Ki
    22
    23
    FIG. 2
    FIG. it
    22
    Fig.Z
    2fy
    22
    5
    op
    ch

    Oo
    CM
    shu
    SC1
    -29
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1625320A3|1991-01-30|Method of manufacturing filter elements
    US3733267A|1973-05-15|Process of filtration of dry cleaning fluid
    DK148953B|1985-12-02|FILTER ELEMENT AND PROCEDURE FOR ITS MANUFACTURING
    US7351345B2|2008-04-01|Method for manufacturing a module for treating a fluid
    RU2006135385A|2008-04-27|FINE FILTERING DEVICE WITH ADJUSTABLE PACKAGING DENSITY IN WHICH FLEXIBLE FIBER IS USED
    MXPA06004211A|2006-06-28|Dual filter system for filtering of injector fluids.
    US5403481A|1995-04-04|Filter apparatus
    US2765915A|1956-10-09|Method of and means for recovering fibers from pulp-water
    US4692248A|1987-09-08|Drum filter with resin bound particulate filter media
    US3695433A|1972-10-03|A method of filtering a mixture of liquid and fibrous solid contaminants
    SU706012A3|1979-12-25|Vacuum filter for suspension processing
    US2496370A|1950-02-07|Apparatus for filtration of liquids
    US3825124A|1974-07-23|Filter elements for continuous filters
    KR100354836B1|2002-10-05|Apparatus for filtering suspended solid in water
    US20190111368A1|2019-04-18|Utilization of Cannabis, Industrial Hemp or Cannabinoids as Filtration Medium
    US3378143A|1968-04-16|Straining apparatus for paint and the like
    US2565388A|1951-08-21|Filter
    JP2587981Y2|1998-12-24|Filter media and filtration equipment
    US4705631A|1987-11-10|Thickener
    US571474A|1896-11-17|Albertine grand jean
    JP2001500425A|2001-01-16|Filter element
    SU1544457A1|1990-02-23|Nutsche filter for cleaning solutions
    Yadav2019|FILTRATION
    RU1623003C|1995-02-27|Vacuum filter-thickener
    US839591A|1906-12-25|Continuous filter for slimes, sands, &c.
    同族专利:
    公开号 | 公开日
    DE3403738A1|1985-08-08|
    GB2154461A|1985-09-11|
    US4925570A|1990-05-15|
    BR8500470A|1985-09-17|
    GB8502429D0|1985-03-06|
    CH667218A5|1988-09-30|
    US4986913A|1991-01-22|
    DE3403738C2|1990-12-20|
    US4647415A|1987-03-03|
    GB2154461B|1988-01-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB600208A|1945-05-01|1948-04-02|Ronald George Allen|Improvements in and relating to filter elements and the manufacture thereof|
    FR481238A|1915-05-06|1916-11-14|Fred Eugene Bright|Improvements made to polishing machines|
    GB483294A|1935-08-05|1938-04-12|Gen Motors Corp|Improvements in oil filters|
    US2395301A|1940-08-03|1946-02-19|Jesse B Hawley|Method of making filter members|
    GB649866A|1948-08-30|1951-02-07|Varley Dry Accumulators Ltd|Improvements in or relating to separators for electric secondary batteries|
    GB656754A|1948-10-12|1951-08-29|Cuno Eng Corp|Improvements in or relating to method and apparatus for forming carcasses of accreted fibres|
    GB677515A|1948-10-12|1952-08-20|Cuno Eng Corp|Improvements in or relating to a filter element and method of making the same|
    GB858313A|1956-07-06|1961-01-11|Connecticut Filter Corp|Improvements in or relating to filtration elements and methods of making the same|
    BE560006A|1956-11-30|1900-01-01|
    NL97747C|1957-05-24|1900-01-01|
    US3003643A|1957-10-28|1961-10-10|Johnson & Johnson|Filter media|
    US3033373A|1958-07-24|1962-05-08|Mueller Hans|Filter cloth fastening means|
    US3253715A|1959-06-11|1966-05-31|Johnson & Johnson|Process and composition for boil proof non-woven filter media|
    GB1000038A|1960-12-06|
    BE625893A|1961-03-27|
    US3431332A|1962-07-16|1969-03-04|Interface Corp|Ceramic casting techniques|
    FR1414155A|1964-10-09|1965-10-15|Filter plate manufacturing process, and industrial product obtained|
    US3449207A|1965-09-03|1969-06-10|Beloit Corp|Dual orifice vacuum forming mold|
    US3594273A|1967-05-15|1971-07-20|Amf Inc|Sequential accretion of plural-fiber articles|
    US3535235A|1967-11-22|1970-10-20|Tri Mer Corp|Filter apparatus|
    US3597219A|1968-09-27|1971-08-03|Monsanto Co|Chillproofing of beverages using insoluble polymer-enzyme product|
    US3786126A|1971-03-04|1974-01-15|Johns Manville|Method for making a disposable face respirator|
    US3935060A|1973-10-25|1976-01-27|Mcdonnell Douglas Corporation|Fibrous insulation and process for making the same|
    US4016234A|1974-05-20|1977-04-05|United States Gypsum Company|Paper-backed acoustical tile|
    US4024014A|1975-12-15|1977-05-17|Conwed Corporation|Non-combustible hardboard sheet|
    JPS5434475A|1977-08-18|1979-03-13|Chisso Corp|Production of cylindrical fiber molded article containing granular solid|
    US4252759A|1979-04-11|1981-02-24|Massachusetts Institute Of Technology|Cross flow filtration molding method|
    AT371359B|1982-02-11|1983-06-27|Schafft Helmut|FILTER DEVICE, ESPECIALLY FOR BEVERAGES|
    US4515848A|1983-09-23|1985-05-07|Gates Formed Fibre Products Inc.|Materials and methods for making resin-rigidified articles|DE3501527A1|1984-06-08|1986-07-24|Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck|Multi-layer ventilation filter, preferably for vehicle cabins and safety rooms|
    DE3617519A1|1986-05-24|1987-11-26|Seitz Enzinger Noll Masch|TWO- OR MULTI-STAGE METHOD FOR REMOVING IMPURITIES FROM STILL OR CARBONIC LIQUIDS, IN PARTICULAR DRINKS, AND APPARATUS FOR CARRYING OUT THIS|
    DE3622356C1|1986-07-03|1987-10-29|Draegerwerk Ag|Process for producing a filter having a plurality of folded sections and tool therefor|
    DE8813974U1|1988-11-08|1988-12-22|Albert Handtmann Armaturenfabrik Gmbh & Co Kg, 7950 Biberach, De|
    DE3943249C2|1989-12-29|1993-11-18|Seitz Filter Werke|Closed filter element|
    US5039465A|1990-04-24|1991-08-13|The Budd Company|Method and apparatus for forming fiber reinforced plastic preforms from a wet slurry|
    DE4120971A1|1991-06-25|1993-01-28|Thomas Handtmann|FILTERING METHOD AND FILTERING DEVICE FOR FILTERING LIQUIDS|
    US5286326A|1992-05-12|1994-02-15|The Budd Company|Method for binding fibers in a fiber reinforced preform using an electromagnetic field to melt binding fibers|
    US5820801A|1992-05-12|1998-10-13|The Budd Company|Reinforced thermoplastic molding technique method|
    US5685956A|1992-05-12|1997-11-11|The Budd Company|Method and apparatus for binding fibers in a fiber reinforced preform|
    US5296150A|1992-07-21|1994-03-22|Environmental Pretreatment Systems, Inc.|Water oil separator|
    JP3666020B2|1992-09-24|2005-06-29|東陶機器株式会社|Functionally gradient material and manufacturing method thereof|
    DE4309366C1|1993-03-23|1994-04-21|Thomas Handtmann|Stackable filter holder - with distributor element seal pref. of polyamide, e.g. for sterile filtration of beer|
    DE4309921A1|1993-03-26|1994-09-29|Klaus Schumann|Process and apparatus for the production of filters and filters produced by this means|
    US5554288A|1993-12-28|1996-09-10|Little Rapids Corporation|Disposable filters and manufacturing process|
    CA2180015A1|1993-12-28|1995-07-06|Theodore Rydell|Disposable filters and manufacturing process|
    DE4407149B4|1994-03-04|2006-06-29|Mhb Filtration Gmbh & Co. Kg|Method for producing a multilayer adsorption filter layer|
    DE59403873D1|1994-03-07|1997-10-02|Maurer Sa Ing A|Device for filtering fluid media|
    DE19705855A1|1997-02-15|1998-09-03|Seitz Filter Werke|Filtration device|
    US5795443A|1997-03-13|1998-08-18|The Budd Company|Apparatus for controlling fiber depositions in slurry preforms|
    US5972169A|1998-01-15|1999-10-26|The Budd Company|Slurry preform system|
    DE10065258A1|2000-12-29|2002-07-18|Seitzschenk Filtersystems Gmbh|Fluid handling module and method of making such modules|
    WO2004039474A2|2002-10-25|2004-05-13|Pall Corporation|Biological fluid filter|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3403738A|DE3403738C2|1984-02-03|1984-02-03|
    [返回顶部]