US3814334A - Colloid mill - Google Patents

Colloid mill Download PDF

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Publication number
US3814334A
US3814334A US00271644A US27164472A US3814334A US 3814334 A US3814334 A US 3814334A US 00271644 A US00271644 A US 00271644A US 27164472 A US27164472 A US 27164472A US 3814334 A US3814334 A US 3814334A
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United States
Prior art keywords
filter
stirring mill
discs
separator device
stripper
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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.)
Expired - Lifetime
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US00271644A
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English (en)
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F Funk
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Individual
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Individual
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Publication date
Priority claimed from CH779672A external-priority patent/CH570201A5/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material

Definitions

  • Field of Search synthetic pearls is moved in a container by means of 181, 88, DK ⁇ , 7, 95, 65 one or more rotating milling members, the treated mater'ial being discharged through a sieve or filter elimi- References Cit d nating the millbodies or pearls, the filter being rotated UNITED STATES PATENTS for avoiding choking 0f the filter.
  • the invention concerns a colloid mill in which the material to be treated mixed with millbodies, e.g., glass, ceramical or synthetic pearls, is moved in a container by means of one or more rotating milling members, the treated material being discharged through a sieve or filter eliminating the millbodies or pearls.
  • millbodies e.g., glass, ceramical or synthetic pearls
  • FIG. 1 is a sectional view of a part of the separator device of the first example.
  • FIG. 2 is a sectional view of a part of the separator device of the second example.
  • FIG. 3 is a side view of the filtering disc of the second example.
  • FIG. 4 is a sectional view through a portion of the mill of the third example and FIG. 5 is a section along line V V of FIG. 4.
  • FIG. 1 the outer portions of two discs 1 and 2 belonging to the separator device of a rotatable stirring or colloid mill are shown. They'are rigidly mounted on a rotatable shaft not shown in FIG. 1, such as, for instance, on a shaft 14 according to FIG. 3 or FIG. 4. Also rigidly mounted on this shaft are one or more discshaped milling members such as, for instance, discs 18 as shown in FIG. 4.
  • FIG. 1 Between the two separator discs 1 and 2 in FIG. 1 there is a cylindrical hollow space receiving the treated material, this space being connected with an outlet for the treated material, for instance, through bores 15 of the hollow shaft 14 according to FIG. 3.
  • the discs 1 and 2 of FIG. 1 have each an inner shoulder la and 2a respectively. These shoulders 10 and 2a are engaged by a cylindrical sheet metal supporting or reinforcing ring 3 having slits or oblong holes 4.
  • On the ring 3 bears a cylindrical ring 5 of a particularly abrasionproof plastic or other synthetic material.
  • This ring 5, constituting a sieve or filter has slot holes 6 widening from the exterior towards the interior, ie in the flow direction of the treated material flowing into the hollow space between the discs 1 and 2.
  • the clear width of the slot holes 6 is dimensioned in such a way that the millbodies consisting, for instance, of pearls made of glass, ceramics or plastic material, cannot pass through these holes 6. Should in spite of that, foreign bodies enter into a hole 6, they can, due to the widening of the slots towards the inside, pass through it so that a choking of the sieve or filter 5 is avoided. Thorough tests have proved that the plastic ring 5 reaches a very high servicetime. At the same time, the millbodies or millpearls are precluded from damage in that, on possible impact onto the relatively rapidly rotating plastic ring 5, they are not under heavy stress or strain.
  • any other perforation of the plastic ring 5 and/or the supporting ring 3 may be provided. If the surfaces of the supporting ring 3 and the plastic ring 5, contacting each other, have a suitable structure so that between the members 3 and 5 there exists a system of many transverse channels, the holes 4 of the supporting ring 3 need not coincide with the holes 6 of the plastic ring 5. If the axial width of the sieve or filter 5 between the discs 1 and 2 is small and/or the thickness of the plastic ring 5 is chosen large enough and/or the working pressure is low enough, the supporting ring 3 can, if desired, be omitted.
  • the filter is constituted by a pile ofrings or discs 7 lying between the two discs 1 and 2 of the separator device.
  • the discs 7, taken along by the discs 1 and2 are secured in their position relatively to one another by pins 8 axially traversing them.
  • Each of the discs 7 has an axial annular flange 9 from which ribs 10 of the same axial height extend radially inwards and between them radial passage channels 11 are formed.
  • the distance between adjacent discs 7 and thereby the clear width of the filter slots 12 is determined by spacer rings 13 inserted between the discs 7.
  • the desired clear width of the filter slots 12 can be determined by a suitable choice of the thickness of the spacer rings.
  • the discs 1 and 2 are fixed on a hollow shaft 14, into which the treated material can escape from the collecting space between the discs 1 and 2 through bores 15 of the shaft 14 flowing through this shaft to an outlet not shown.
  • the working manner of the embodiment according to FIGS. 2 and 3 is easily to be understood.
  • the treated or milled material flows through the filter slots 12, from here through the channels 11 into the collecting space between the discs 1 and 2 and from there on the just described path through the hollow shaft 14 out of the colloid mill.
  • the discs 7 may consist of any suitable material, preferably also of an abrasion proof, artificial or synthetic material.
  • the discs 1 and 2 may in both embodiments according to FIGS. 1 to 3 consist of abrasion proof material such as plastic or other synthetic material or their outer surfaces may be coated with such an abrasion proof material.
  • choking may occur when treating certain kinds of material, for instance, on treating thixotropic liquids such as, thixotropic colors or dyestuffs, whose tendency to form a gel can choke the sieve or filter openings by forming lumps.
  • thixotropic liquids such as, thixotropic colors or dyestuffs
  • thixotropy is the property possessed by certain gels of liquifying under the action of beating or vibrating forces.
  • milling members in the shape of discs 18 placed at a distance from each other are rigidly arranged on the rotatable shaft 14, as is the case, though not shown, in the two first examples.
  • the material to be treated is mixed with millbodies 18a, such as, e.g., glass, ceramical or plastic or other synthetical pearls, and is moved in the vessel 16 from right to left in FIG. 4. After eliminiation of the millbodies or pearls at the separator device, the treated material finally leaves the mill through the outlet 19.
  • the separator device With its sieve or filter openings 6 is provided.
  • This device has a flange 22.0f a tub'epiece 23, this flange being rigidly connected by means of bolts 21 traversing sleeves 20, with the left-hand disc 18 rotating with the shaft 14.
  • the tube piece 23 is tightened against the stationary wall 25 of the vessel 16 by means of a slide ring seal 24.
  • the annular sieve or filter 26 comprising the openings 6 is rigidly connected with the outermost lefthand disc 18 (FIG. 4) and with the flange 22, so it rotates with the shaft 14 as in the two first examples.
  • This wheel 27 is rigidly connected with the wall 25 by means of a tube 33, so that it cannot rotate.
  • the tube 33 is provided with passage holes 29 through which the treated material freed from the millbodies or pearls can reach the annular space 30 and from here flow through the passages 31, 32 in the discharge conduit 19.
  • the strippers 28, in rotating direction D of the sieve or filter 26, are inclined forwardly from their outer end towards their inner end.
  • the strippers 28 extend from the internal surface of the sieve or filter 26 up to the exit, i.e., up to the stationary tube 33. At least at their ends adjacent the sieve or filter 26 the strippers 28 have the shape of knives.
  • rotatable strippers 28 which, of course, rotate at a speed different in value and/or direction from that of the filter 26.
  • a stirring mill comprising, a container to receive a mixture of material to be treated and of millbodies, an outlet from said container for the treated material, a rotatable shaft traversing said container, a plurality of milling members rigidly connected with said shaft and spaced from one another, and a separator device in rigid connection with said shaft immediately adjacent a side wall of one of said milling members and forming a hollow space communicating with said outlet, said separator device comprising a circumferential filter rotating with said shaft and having openings widening in the direction of flow of the treated material for retaining said millbodies from said hollow space.
  • a stirring mill as claimed in claim 1 said filter comprising a plurality of piled discs, forming'slots between them.
  • a stirring mill as claimed in claim 5 said piled discs having on their circumference axially projecting annular flanges, and further having radial ribs forming passage channels between said ribs, said separator device including spacer rings between said piled discs to determine the clear width of the slots between the piled discs.
  • a stirring mill as claimed in claim 1 including at least one stripper inside the rotating filter disposed adjacent said openings in said filter to preclude blockage of said filter by material passing therethrough.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
US00271644A 1971-07-26 1972-07-14 Colloid mill Expired - Lifetime US3814334A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1094271 1971-07-26
CH779672A CH570201A5 (en) 1972-05-26 1972-05-26 Colloid mill with rotatable material discharge filter - with non-clogging gradually widening discharge openings which retain millbodies

Publications (1)

Publication Number Publication Date
US3814334A true US3814334A (en) 1974-06-04

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ID=25702245

Family Applications (1)

Application Number Title Priority Date Filing Date
US00271644A Expired - Lifetime US3814334A (en) 1971-07-26 1972-07-14 Colloid mill

Country Status (5)

Country Link
US (1) US3814334A (enrdf_load_stackoverflow)
DE (1) DE2234076C3 (enrdf_load_stackoverflow)
FR (1) FR2147679A5 (enrdf_load_stackoverflow)
GB (1) GB1396130A (enrdf_load_stackoverflow)
IT (1) IT963333B (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904133A (en) * 1973-09-28 1975-09-09 Netzsch Maschinenfabrik Separation device for separating grinding elements and ground suspension in an agitator mill
US4047672A (en) * 1975-06-10 1977-09-13 Vladimir Vladimirovich Volkov Apparatus for disintegration of materials
US4067505A (en) * 1976-11-06 1978-01-10 Carlos Oliver Pujol Horizontal-axle grinder with rotatable sieve
US4108385A (en) * 1975-07-09 1978-08-22 Friedrich Funk Colloidal mill
WO1987001967A1 (en) * 1985-10-04 1987-04-09 Morehouse Industries, Inc. Media mill screen assembly
US4730789A (en) * 1982-12-10 1988-03-15 Gebruder Buhler Ag Agitator mill
US4742966A (en) * 1985-06-21 1988-05-10 Morehouse Industries, Inc. Media mill screen assembly
US4936513A (en) * 1987-12-30 1990-06-26 Otisca Industries, Ltd. Ball mills
US5333804A (en) * 1993-08-20 1994-08-02 Premier Mill Corp. Agitator mill
US5335867A (en) * 1991-07-09 1994-08-09 Draiswerke Gmbh Agitator mill
US5518191A (en) * 1993-08-31 1996-05-21 Fryma-Maschinen Ag Agitator mill
US20050224612A1 (en) * 2003-04-15 2005-10-13 Martin Heinzelmann Stirred ball mill
US20160144372A1 (en) * 2013-08-14 2016-05-26 Netzsch-Feinmahltechnik Gmbh Separating Device For A Ball Mill Or Agitator Ball Mill As Well As A Ball Mill Or Agitator Ball Mill With A Separating Device
CN110918203A (zh) * 2018-09-20 2020-03-27 耐驰精细研磨技术有限公司 搅拌球磨机和搅拌球磨机的运行方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH622718A5 (en) * 1977-08-12 1981-04-30 Buehler Ag Geb Agitator mill
DE4412408C2 (de) * 1994-04-11 2003-03-20 Netzsch Erich Holding Rührwerksmühle

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1946511A (en) * 1931-10-05 1934-02-13 American Ball Mill Company Discharge for ball mills
US1950713A (en) * 1931-09-08 1934-03-13 Black Clawson Co Paper machinery
US1975501A (en) * 1928-11-19 1934-10-02 Charles L Carman Tube mill or ball mill
US2014640A (en) * 1931-10-20 1935-09-17 Mine And Smelter Supply Compan Grinding mill
US2674927A (en) * 1951-01-27 1954-04-13 Wicksell Sture Valfrid Disintegrator for fibrous materials
US2818220A (en) * 1954-10-14 1957-12-31 Allis Chalmers Mfg Co Vibrating ball mill having baffle plate for increasing retention time of material in mill
US3233835A (en) * 1961-12-06 1966-02-08 Sevin Roger Joseph Apparatus for milling and dispersing substances in liquid media
US3617008A (en) * 1967-08-02 1971-11-02 Lamort E & M Refining apparatus, chiefly for screening paper pulp
US3672580A (en) * 1970-12-08 1972-06-27 Ferrox Iron Ltd System for feeding grinding media to continuous attrition mill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1242990B (de) * 1965-05-24 1967-06-22 Inst Chemieanlagen Ruehrwerksmuehle
DE1757953C3 (de) * 1968-07-01 1979-09-27 Veb Maschinenfabrik Heidenau, Ddr 8312 Heidenau Rührwerksmühle
US3653600A (en) * 1969-07-28 1972-04-04 George R Schold Apparatus for dispersing finely divided solid particles in a liquid vehicle

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975501A (en) * 1928-11-19 1934-10-02 Charles L Carman Tube mill or ball mill
US1950713A (en) * 1931-09-08 1934-03-13 Black Clawson Co Paper machinery
US1946511A (en) * 1931-10-05 1934-02-13 American Ball Mill Company Discharge for ball mills
US2014640A (en) * 1931-10-20 1935-09-17 Mine And Smelter Supply Compan Grinding mill
US2674927A (en) * 1951-01-27 1954-04-13 Wicksell Sture Valfrid Disintegrator for fibrous materials
US2818220A (en) * 1954-10-14 1957-12-31 Allis Chalmers Mfg Co Vibrating ball mill having baffle plate for increasing retention time of material in mill
US3233835A (en) * 1961-12-06 1966-02-08 Sevin Roger Joseph Apparatus for milling and dispersing substances in liquid media
US3617008A (en) * 1967-08-02 1971-11-02 Lamort E & M Refining apparatus, chiefly for screening paper pulp
US3672580A (en) * 1970-12-08 1972-06-27 Ferrox Iron Ltd System for feeding grinding media to continuous attrition mill

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904133A (en) * 1973-09-28 1975-09-09 Netzsch Maschinenfabrik Separation device for separating grinding elements and ground suspension in an agitator mill
US4047672A (en) * 1975-06-10 1977-09-13 Vladimir Vladimirovich Volkov Apparatus for disintegration of materials
US4108385A (en) * 1975-07-09 1978-08-22 Friedrich Funk Colloidal mill
US4067505A (en) * 1976-11-06 1978-01-10 Carlos Oliver Pujol Horizontal-axle grinder with rotatable sieve
US4730789A (en) * 1982-12-10 1988-03-15 Gebruder Buhler Ag Agitator mill
US4742966A (en) * 1985-06-21 1988-05-10 Morehouse Industries, Inc. Media mill screen assembly
WO1987001967A1 (en) * 1985-10-04 1987-04-09 Morehouse Industries, Inc. Media mill screen assembly
US4709863A (en) * 1985-10-04 1987-12-01 Morehouse Industries, Inc. Media mill screen assembly
US4936513A (en) * 1987-12-30 1990-06-26 Otisca Industries, Ltd. Ball mills
US5335867A (en) * 1991-07-09 1994-08-09 Draiswerke Gmbh Agitator mill
US5333804A (en) * 1993-08-20 1994-08-02 Premier Mill Corp. Agitator mill
US5518191A (en) * 1993-08-31 1996-05-21 Fryma-Maschinen Ag Agitator mill
US20050224612A1 (en) * 2003-04-15 2005-10-13 Martin Heinzelmann Stirred ball mill
US7014134B2 (en) * 2003-04-15 2006-03-21 Willy A. Bachofen Ag Stirred ball mill
US20160144372A1 (en) * 2013-08-14 2016-05-26 Netzsch-Feinmahltechnik Gmbh Separating Device For A Ball Mill Or Agitator Ball Mill As Well As A Ball Mill Or Agitator Ball Mill With A Separating Device
US10675631B2 (en) * 2013-08-14 2020-06-09 Netzsch-Feinmahltechnik Gmbh Separating device for a ball mill or agitator ball mill as well as a ball mill or agitator ball mill with a separating device
CN110918203A (zh) * 2018-09-20 2020-03-27 耐驰精细研磨技术有限公司 搅拌球磨机和搅拌球磨机的运行方法

Also Published As

Publication number Publication date
IT963333B (it) 1974-01-10
FR2147679A5 (enrdf_load_stackoverflow) 1973-03-09
GB1396130A (en) 1975-06-04
DE2234076C3 (de) 1985-11-14
DE2234076A1 (de) 1973-02-15
DE2234076B2 (de) 1978-10-26

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