US2563266A - Grinding roll mill - Google Patents
Grinding roll mill Download PDFInfo
- Publication number
- US2563266A US2563266A US50172A US5017248A US2563266A US 2563266 A US2563266 A US 2563266A US 50172 A US50172 A US 50172A US 5017248 A US5017248 A US 5017248A US 2563266 A US2563266 A US 2563266A
- Authority
- US
- United States
- Prior art keywords
- rolls
- roll
- grinding
- bars
- bearings
- 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.)
- Expired - Lifetime
Links
- 238000000227 grinding Methods 0.000 title description 21
- 239000000463 material Substances 0.000 description 13
- 230000000875 corresponding effect Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000009432 framing Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 241000786137 Halogeton glomeratus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/04—Crushing or disintegrating by roller mills with two or more rollers specially adapted for milling paste-like material, e.g. paint, chocolate, colloids
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/04—Apparatus specially adapted for manufacture or treatment of cocoa or cocoa products
- A23G1/10—Mixing apparatus; Roller mills for preparing chocolate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
- B02C4/18—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a bar
- B02C4/22—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member in the form of a bar specially adapted for milling paste-like material, e.g. paint, chocolate, colloids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
- B29B7/56—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set
- B29B7/568—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders with co-operating rollers, e.g. with repeated action, i.e. the material leaving a set of rollers being reconducted to the same set or being conducted to a next set with consecutive sets of rollers or a train of rollers
Definitions
- the grinding roll mills used for manufacturing paints, chocolate and, in general, for the dispersion of powdery solids in uid or plastic mediums, or for making homogeneous similar matters, have, all conditions being equal, an efficiency so much the greater as the distance existing between the working rolls is smaller.
- strong thrust members are located on both sides of the grinding machine, parallelly with the axis of the roll or rolls, in the plane or near the plane in which are developed the resultants of pressures on the rolls from the products being ground and are associated with intermediary members transmitting said resultants to and along said thrust members.
- These intermediary members are adjustable so that it is possible to control the reactions developed along the rolls and thus compensate for the deections which the roll or rolls would assume if they were held by the bearings alone. Between said intermediate members and the roll or rolls,
- a particularly advantageous arrangement is the one according to which the material to be ground is caused to pass between the generatrices of the rolls and the reaction rubbing surfaces. In that way, not only a self lubrication by the material, but also a dissipation through the material of almost the whole mechanical power delivered to the machine are obtained and consequently the eiciency of the said machine is improved.
- the invention may be adopted to grinding machines or mills including any number of rolls. However it is particularly desirable to provide an even number of rolls, greater than two. In that case, the machine may be entirely symmetrical, the material supply being located between the two central rolls, and an outlet doctor being combined with each external roll, which gives a symmetrical Working in satisfactory conditions.
- Fig. V1 is a plan-view of an improved machine constructed according to the invention and including four rolls.
- Figs. 2 and 3 are elevation views at right angles with partial cross-sections.
- Figs. 4 and 5 are diagrammatic cross-sections of two modications including two and three rolls.
- Fig. 6 is a partial diagrammatic cross-section showing a pressure bar with a concave surface.
- Fig. 7 is a partial diagrammatic cross-section of another example.
- Fig. 8 is another partial diagrammatic crosssection showing a pressure bar slightly shifted with reference to the plane including the roll axis.
- the machine shown in Fig. 1 to 3 includes a stationary framing body I which bears, along opposite sides ab, cd, bearings 2 receiving the trunnions 3 of grinding rolls 4. These bearings are supported in frame I on sides ab, -cd for sliding movement along these sides.
- the mounting is made by a dovetail assembly, as it is shown at 5 in Fig. 3.'
- Parallelly with the two other sides ac and bd, that is parallelly with the roll axis, are located two strong cross-bars or beams 6, 'l which constitute the thrust members mentioned in the preamble of the present specication.
- Accommodated in a longitudinal groove 8 in each beam is a bar or strip 9, I0.
- bars 9, IIJ are provided to come into contact along a generatrix with outside rolls and to transmit pressure forces to respective beams 6 and 1.
- a number of screws II distributed along the length of the beams permit to locally adjust the thrust of bars 9, I upon the rolls, when more or less screwing these screws into the beams.
- the latter are linked or braced together by four ties I2 simply stopped at one end against one of the beams 1 by nuts I3 and provided at the other end with hand-wheel nuts I4 permitting to adjust the tension of these ties, in order to rough down the general adjustment of the distances between rolls and between rolls and bars. This tension balances the grinding pressure which has a tendency to separate the rolls, and consequently the beams.
- the latter may be mounted in such a manner that they may slide along sides ab, cd, for instance by means of a dovetail joint as already speciiled for the roll bearings.
- the rolls are driven by a pulley I5 and gears I6 which, in the shown example, are designed to give the same speed of revolution to both central rolls and higher speed of revolution to both outer rolls, thus generating a rubbing between central and outside rolls which improves the grinding of the thin layer of material carried round by central rolls into the nip between said rolls and the outer rolls.
- the material to be ground is put at I1 between both central rolls. It is submitted to a rst grinding between these rolls, smears their surface, is submitted to a second grinding -as athin. layer between central and outer rolls, is partially carried away by the latter outer rolls, passes between outer rolls and bars 9, I0, being submitted to a last grinding, and nally is collected by symmetrical doctors I8.
- the bars 9, I0 have a tendency to be deflected due to the pressure exerted by the material to be ground. This tendency is counteracted by increasing the screwing of screws Il, in order to maintain the bars in a rectilinear shape.
- the central screws should of course be screwed more tightly than outer or ,4 marginal screws.
- the beams 6 and 1 which constitute the thrust members have their deflection increased.
- the moment of inertia of their section is properly calculated in order that the elastic reaction of these beams, when being deflected, is able to support pressure stresses transmitted by the screws, while annulling the deflections of the bars.
- the generatrices of the roll or rolls being thus maintained rectilinear, the distances between the rolls, as well as the distances between the outer rolls and the bars 9 and l0, may be reduced as much as it is desired, in order to obtain a grinding as ne as it is required.
- Fig. 4 shows another modification of the machine the diierence of which with the examples of Fig. 1 to 3 is the number of rolls reduced to 2 instead of 4.
- the material to be ground is put at I'I above the gap between one of the bars 9 and one of the rolls. It passes into this gap, smears the adjacent roll, is ground again between the two rolls and partially carried round by the second roll, passes between it and bar I0 where it is ground a third time and is finally scraped off at I8.
- the number of rolls may also be 5, 6, etc.
- Bars 9 and I0 may have their surface of contact with the rolls either plane as shown in Fig. 1 to 5, or shaped in order to facilitate the passage of the material between them and the rolls or balance, with unitary pressures which would be admissible for a satisfactory working, the imf portant stresses which have a tendency to separate the rolls and to press them upon the bars.
- Fig. 6 shows a bar Illa which on the face thereof opposite the adjacent roll is concave with a radius proximate equal to the roll radius for increasing the surface of contact and reducing the pressures by surface unit.
- the bars may be cooled or heated by passing a duid therethrough or by any other means according to the nature of the material to be processed.
- Fig. 8 shows another modication in which the generatrix of Contact between bar l and adjacent roll is slightly shifted with reference to the plane of the axis of the rolls, in such a manner that, considering the direction of rotation of the outside roll, the resultant R of the rubbing stress F on the bar and of the pressure of the bar upon the roll P is as horizontal as possible in order to annul the vertical component which would have a tendency in operation to pull the axis of the roll out of the plane in which it should stay, and thus attenuate objectionable deformations.
- a thrust resisting, roll conning frame which comprises the combination of a pair of parallel, spaced apart rigid beams having parallel, facing, longitudinal recesses and a plurality of longitudinally spaced apart apertures therethrough opening into said recesses; a longitudinally flexible, roll contacting bar arranged in each recess to be supported and guided therein for inward and outward movement; a movable push member in each aperture for contact with the correspon-ding bar; means backed from the corresponding beam for controllably moving each push member through the corresponding aperture, so as separately to control the local extent of inward projection of the corresponding bar from said beam; and means of adjustable length for tying said beams together.
- a grinding roll mill the combination of a set of adj acent, parallel, grinding rolls having end trunnions, one of said rolls being adapted and arranged to be driven; a stationary framing body providing a pair of parallel slideways spaced apart by the distance between the end trunnions of each roll; a pair of bearings for the trunnions of each roll, the pair corresponding to the driven roll being fast with said framing body while the remainder of said pairs are supported for sliding movement in said slideways; a thrust resisting, roll confining frame comprising a pair of parallel rigid beams located on either side of said roll set and supported by said body for sliding movement parallel to said slideways, said beams having parallel, facing, longitudinal recesses and a plurality of longitudinally spaced apart apertures therethrough opening into said recesses; a longitudinally iiexible, roll contacting bar arranged in each recess to be supported and guided therein for inward and outward movement; a movable push member in each aperture for contact with the
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR278070X | 1947-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2563266A true US2563266A (en) | 1951-08-07 |
Family
ID=8886530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US50172A Expired - Lifetime US2563266A (en) | 1947-10-09 | 1948-09-20 | Grinding roll mill |
Country Status (2)
Country | Link |
---|---|
US (1) | US2563266A (fr) |
CH (1) | CH278070A (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE911574C (de) * | 1951-08-30 | 1954-05-17 | Dr Erich Baum | Antrieb von Dreiwalzenmuehlen |
US3138338A (en) * | 1961-05-29 | 1964-06-23 | Kennametal Inc | Crushing rolls |
CN111329773A (zh) * | 2020-03-09 | 2020-06-26 | 金华艾丽丝化妆品有限公司 | 一种口红生产工艺 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE924983C (de) * | 1952-05-31 | 1955-03-10 | Boehler & Co Ag Geb | Kammwalzengeruest |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL43223C (fr) * | 1935-04-16 | |||
US90230A (en) * | 1869-05-18 | Improvement in corn-httskeh | ||
US305751A (en) * | 1884-09-30 | hollinqsworte | ||
US498385A (en) * | 1893-05-30 | Roller for crushing ore or other material | ||
US727875A (en) * | 1902-02-03 | 1903-05-12 | Aspinwall Mfg Company | Corn-husker. |
US1304819A (en) * | 1919-05-27 | Oscab sober | ||
US1535052A (en) * | 1922-11-17 | 1925-04-21 | Smith Sidney | Mill for grinding paints, enamels, inks, and other viscous materials |
US1713270A (en) * | 1926-03-19 | 1929-05-14 | Drysdale Henry | Single-roll wet mill |
US1772188A (en) * | 1926-11-13 | 1930-08-05 | Day J H Co | Pressure-indicating device |
US2105192A (en) * | 1936-11-25 | 1938-01-11 | Kent Machine Works Inc | Roller mill |
US2254512A (en) * | 1938-11-02 | 1941-09-02 | Charles P Brasington | Grinding mill |
-
1948
- 1948-09-17 CH CH278070D patent/CH278070A/fr unknown
- 1948-09-20 US US50172A patent/US2563266A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US90230A (en) * | 1869-05-18 | Improvement in corn-httskeh | ||
US305751A (en) * | 1884-09-30 | hollinqsworte | ||
US498385A (en) * | 1893-05-30 | Roller for crushing ore or other material | ||
US1304819A (en) * | 1919-05-27 | Oscab sober | ||
US727875A (en) * | 1902-02-03 | 1903-05-12 | Aspinwall Mfg Company | Corn-husker. |
US1535052A (en) * | 1922-11-17 | 1925-04-21 | Smith Sidney | Mill for grinding paints, enamels, inks, and other viscous materials |
US1713270A (en) * | 1926-03-19 | 1929-05-14 | Drysdale Henry | Single-roll wet mill |
US1772188A (en) * | 1926-11-13 | 1930-08-05 | Day J H Co | Pressure-indicating device |
NL43223C (fr) * | 1935-04-16 | |||
US2105192A (en) * | 1936-11-25 | 1938-01-11 | Kent Machine Works Inc | Roller mill |
US2254512A (en) * | 1938-11-02 | 1941-09-02 | Charles P Brasington | Grinding mill |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE911574C (de) * | 1951-08-30 | 1954-05-17 | Dr Erich Baum | Antrieb von Dreiwalzenmuehlen |
US3138338A (en) * | 1961-05-29 | 1964-06-23 | Kennametal Inc | Crushing rolls |
CN111329773A (zh) * | 2020-03-09 | 2020-06-26 | 金华艾丽丝化妆品有限公司 | 一种口红生产工艺 |
Also Published As
Publication number | Publication date |
---|---|
CH278070A (fr) | 1951-09-30 |
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