US3248761A - Mixer - Google Patents

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Publication number
US3248761A
US3248761A US359598A US35959864A US3248761A US 3248761 A US3248761 A US 3248761A US 359598 A US359598 A US 359598A US 35959864 A US35959864 A US 35959864A US 3248761 A US3248761 A US 3248761A
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US
United States
Prior art keywords
mulling
crib
wheels
side wall
mixer
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
Application number
US359598A
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English (en)
Inventor
Robert L Mcilvaine
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.)
Simpson Herbert Corp
Herbert Simpson Corp
Original Assignee
Simpson Herbert Corp
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 Simpson Herbert Corp filed Critical Simpson Herbert Corp
Priority to US359598A priority Critical patent/US3248761A/en
Priority to GB27531/64A priority patent/GB1069154A/en
Priority to CH439765A priority patent/CH427476A/de
Priority to DEN26504A priority patent/DE1233701B/de
Priority to FR13070A priority patent/FR1432062A/fr
Priority to SE4927/65A priority patent/SE301532B/xx
Application granted granted Critical
Publication of US3248761A publication Critical patent/US3248761A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/14—Edge runners, e.g. Chile mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/0422—Devices having a fixed receptable with rotating tools, some or all of these tools being rolls or balls loosely mounted on their axis or loose balls in contact with the side wall or the bottom of the receptacle, e.g. with aerating means; "Devices of the Muller type"
    • B22C5/0427—Devices having a fixed receptable with rotating tools, some or all of these tools being rolls or balls loosely mounted on their axis or loose balls in contact with the side wall or the bottom of the receptacle, e.g. with aerating means; "Devices of the Muller type" having only one vertical tool-driving shaft

Definitions

  • the present invention relates to a new and improved mixer for granular material and the like and more particularly to mixers of the type employing rotatable mulling Wheels for mulling and mixing materials such as those described in United States Patents Nos. 2,978,147 and 2,970,778, which patents are assigned to the same assignee as the present application.
  • Another object of the present invention is the provision of a new and improved mixer of the type described wherein there are provided means associated with the mulling wheels for lifting and aerating the sand as it is mulled.
  • Yet another object of the present invention is the provision of a new and improved mixer of the type described having means associated with the mulling wheels for cleaning and breaking up any material accumulating around the periphery of the material receiving crib of the mixer.
  • Another object of the present invention is the provision of a new and improved mixer with mulling wheels having outwardly extending cleat means thereon for lifting and aerating material disposed adjacent the periphery of the material receiving crib of the mixer.
  • a new and improved mixer comprising a material receiving crib having a side Wall and rotary mixing head mounted for rotation in the crib about a vertical axis.
  • the mixing head is provided with a pair of mulling Wheels disposed on opposite sides of the head, each mounted for rotation on an outwardly extending spindle.
  • Each wheel is provided with an outer side face disposed to face the side wall of the crib and cleat means are provided on the wheels which extend outwardly from these side faces for lifting and aerating the material in the crib disposed around the periphery thereof as the wheels rotate on their spindles during rotation of the mixing head.
  • the cleat means preferably include a plurality of cleat members circumferentially spaced around the spindle axis of the respective wheels and disposed inwardly from the outer periphery of the wheels.
  • cleat members move downwardly into the material in the crib breaking up any accumulations or lumps around the periphery of the crib and then move upwardly carrying with them quantities of the material to further mix and aerate the material.
  • Similar cleat means may also-be disposed to extend inwardly from inner side faces of the mulling wheels in order to breakup, mix and aerate material in the central portion of the crib.
  • FIG. 1 is a top plan view of a mixer constructed in accordance with the features of the present invention
  • FIG. 2 is a sectional elevational view taken substantialy along line 2-2 of FIG. 1;
  • FIG. 3 is a sectional elevational view similar to FIG. 2 but showing a different embodiment of the cleat means of the invention.
  • FIG. 4 is an enlarged, detailed fragmentary sectional view taken substantially along the line 44 of FIG. 1 showing a detailed construction of the cleat means of the present invention.
  • the mixer 10 includes a material receiving crib 12 having an upstanding cylindrical side wall 14 joined to the periphery of a bottom or wear plate 16 and adapted to contain a quantity of sand 18 or other material which is to be pulverized and mixed.
  • a mixing head 20 which is mounted for rotation about a centrally disposed vertical axis 22 in the direction as indicated by the arrowv 24 (FIG. 1).
  • the head 20 is provided with a pair of oppositely extending, radially outwardly disposed support arms 26 and 28 which carry an outer scraper 30 and an inner scraper '32, respectively.
  • the lower edges of the scrapers 30 and 32 are disposed in close proximity to the wear plate 16 in order to move and mix the material in the crib and prevent the material from building up on the wear plate.
  • the outer edge of the outer scraper 30 is positioned to move in close proximity to the side wall 14 of the crib and the scraper is curved in order that mate- 'rial around the periphery of the crib will be continually moved inwardly into the path of the mullet wheels as the mixing head 20 rotates.
  • the inner edge of the inner scraper 32 is disposed toward the central portion of the crib and is curved in order to move material outwardly from the central portion of the crib into the path of the 'muller wheels as the mixing head rotates.
  • the mixing head 20 is also provided with muller wheel support assemblies 34 which extend oppositely outward from the central axis 22in directions generally normal to the support arms 26 and 28.
  • Each of the assemblies 34 is provided with an outward extending spindle 36 on which is journalled a mulling wheel 38.
  • the wheels 38 are journalled to freely rotate on the spindles 36 and as the mixing head 20 isrotated in the crib the wheels 38 are rotated in the direction of the arrows 40 by frictional engagement with the material in the crib 12.
  • the wheels 38 are preferably constructed of a heavy material such as cast iron or steel and are provided with cylindrical outer peripheral surfaces 40 for mulling engagement with the material in the crib to pulverize and break up any lumps or agglomerations that may be pres ent therein. As the material in the crib is engaged by the mulling surfaces 42 of the rotating wheels 38 it is com pressed against the wear plate 16 tending to break up lumps therein and tends to move out from under the wheels as they move through the material.
  • a heavy material such as cast iron or steel
  • cleat means are provided which extend outwardly from the sides of the wheels.
  • the cleat means may take the form of a plurality of individual cleat members 44 which are disposed in spaced circumferential relation about the axes of the spindles 36 as clearly shown in FIGS. 2 and 3.
  • the cleat members 44 are spaced inwardly from the mulling surfaces 42 of the Wheels so that they do not extend below these surfaces to interfere with rotation of the wheels.
  • successive cleat members 44 move downwardly into the material in the crib breaking up any lumps or agglomerations present and then continue to move upwardly out of the material carrying a portion of the material along.
  • the material carried upwardly on the cleat members 44 then falls downwardly into the crib and is aerated and mixed in the process.
  • each of the wheels 38 is provided with an outer side face 46 which is disposed to face the side wall 14 of the crib.
  • these side faces 46 are annular, frusto-conical surfaces and the cleat members 44 are secured at right angles thereto so that the cleat members extend in an outwardly divergent relationship to the axes of the spindles 36.
  • the cleat members 44 are of sufficient length so that the outer ends thereof are in close proximity to the side wall 14 of the crib and the wear plate 16.
  • any lumps of material adjacent the peripheral corner of the crib are broken up by the cleat members and moved inwardly toward the mulling wheels.
  • the cleat members 44 may be secured to the annular conical side faces 46 of the muller wheels 38 by the provision of threaded end shanks 48 formed at the inner ends of the cleat members which are threadedly engaged in recesses 50 provided in the muller Wheels.
  • Lock washers 52 are provided to prevent the cleat members 44 from becoming unthreaded from the recesses 50 during rotation of the muller wheels. As the cleat members wear during use they can readily be replaced by unthreading the worn cleats and inserting new ones into the threaded recesses 50 on the Wheels.
  • FIG. 3 there is illustrated another form of cleat members 44a which are rectangular in transverse cross section instead of round as are the cleat members 44 of FIG. 2.
  • the rectangular cross sectioned cleat members 44a are advantageous in that they have a relatively sharp leading edge or corner 44b which aids in cutting into and breaking up the lumps of material. Additionally, the cleat members 44a have flat surfaces 44c which aid in carrying and lifting the material on upward movement of the cleats and thus provide for increased aeration and mixing of the material.
  • the mulling wheels 38 are provided with inner side faces 54 which may be annular frusto-conical surfaces similar to the outer side faces 46.
  • Cleat members 56 (shown in dotted lines on FIG. 1) similar to the members 44 or 44a may be provided to extend inwardly from the inner side faces 54 toward the central portion of the crib.
  • These inwardly extending cleat members 56 are preferably outwardly divergent at their outer ends from the axes of the spindles 36 and thus tend to aid in breaking lumps or agglomerations of material in the central portion of the crib and move the material outwardly into the path of the mulling wheels.
  • These inwardly extending cleat members 56 also aid in aerating and mixing the material as previously described in connection with the outwardly extending cleat members.
  • a mixer for granular material and the like comprising a material receiving crib having a bottom wall and an upstanding side wall around the periphery thereof, a mixing head assembly in said crib mounted for rotation about an upstanding axis therein, said mixing head assembly including a mulling wheel journaled for rotation about an axis extending outwardly from said upstanding axis toward side side wall, said mulling wheel including an outer peripheral mulling surface and an outer side surface facing said side wall, a plurality of spaced-apart, rodlike, aerating cleats mounted on said mulling wheel, spaced inwardly of said mulling surface to extend outwardly of said side surface toward said side wall for breaking up, lifting, and aerating said material as said mulling wheel rotates.
  • said mixer of claim 1 wherein said mulling wheel includes an inner side surface facing toward the central portion of said crib, and a plurality of spaced-apart, rodlike, aerating cleats mounted on said wheel spaced inwardly of said peripheral mulling surface thereof and extending inwardly toward the central portion of said crib for breaking up, lifting, and aerating said material as said mulling wheel rotates.
  • a mixer for granular material and the like comprising a material receiving crib having a bottom wall and an upstanding side wall around the periphery thereof, a mixing head assembly in said crib mounted for rotation about an upstanding axis therein, said mixing head assembly including a mulling wheel journaled for rotation about an axis extending outwardly from said upstanding axis toward said side wall, said mulling wheel including an outer peripheral mulling surface and an outer, frusto-conical side surface facing said side wall, a plurality of spacedapart, rodlike, aerating cleats mounted on said wheel spaced inwardly of said mulling surface to extend outwardly of said side surface toward said side wall for breaking up, lifting, and aerating said material as said 'wheel rotates, said cleats having outer ends diverging outwardly from the axis of rotation of said wheel.
  • said mulling wheel includes an inner, frusto-conical side surface facing toward the central portion of said crib, and a plurality of spaced-apart, rodlike, aerating cleats mounted on said wheel spaced inwardly of said mulling surface to extend outwardly from said inner side surface toward the central portion of said crib, said cleats having outer ends diverging outwardly from the axis of rotation of said wheel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
US359598A 1964-04-14 1964-04-14 Mixer Expired - Lifetime US3248761A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US359598A US3248761A (en) 1964-04-14 1964-04-14 Mixer
GB27531/64A GB1069154A (en) 1964-04-14 1964-07-03 Mixer
CH439765A CH427476A (de) 1964-04-14 1965-03-31 Mischvorrichtung für körniges Material
DEN26504A DE1233701B (de) 1964-04-14 1965-04-02 Mischvorrichtung fuer koerniges Material
FR13070A FR1432062A (fr) 1964-04-14 1965-04-13 Dispositif mélangeur pour matière en grains
SE4927/65A SE301532B (de) 1964-04-14 1965-04-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US359598A US3248761A (en) 1964-04-14 1964-04-14 Mixer

Publications (1)

Publication Number Publication Date
US3248761A true US3248761A (en) 1966-05-03

Family

ID=23414511

Family Applications (1)

Application Number Title Priority Date Filing Date
US359598A Expired - Lifetime US3248761A (en) 1964-04-14 1964-04-14 Mixer

Country Status (5)

Country Link
US (1) US3248761A (de)
CH (1) CH427476A (de)
DE (1) DE1233701B (de)
GB (1) GB1069154A (de)
SE (1) SE301532B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304588A (en) * 1965-03-18 1967-02-21 Nat Eng Co Apparatus for conditioning granular material using rotating spokes and aerating cleats
US3322404A (en) * 1965-04-22 1967-05-30 Nat Eng Co Mixer including mulling wheel with resilient tire means to facilitate wheel rotation
US3554499A (en) * 1969-03-27 1971-01-12 Royer Foundry & Machine Co Sand aerating device
US3903957A (en) * 1972-01-19 1975-09-09 Papenmeier Kg Maschf Guenther Process for cooling granular materials being mixed
US4343554A (en) * 1979-09-01 1982-08-10 Taiyo Chuki Co., Ltd. Kneader for particulate to granular materials
CN106363126A (zh) * 2016-11-30 2017-02-01 攀枝花市蓝天锻造有限公司 混砂机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1436519A (en) * 1920-06-22 1922-11-21 Norton Richard Potato peeling and cleaning machine
US2978147A (en) * 1957-12-23 1961-04-04 Simpson Herbert Corp Mixer for granular material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970778A (en) * 1957-11-25 1961-02-07 Simpson Herbert Corp Method and apparatus for mixing agglomerative materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1436519A (en) * 1920-06-22 1922-11-21 Norton Richard Potato peeling and cleaning machine
US2978147A (en) * 1957-12-23 1961-04-04 Simpson Herbert Corp Mixer for granular material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304588A (en) * 1965-03-18 1967-02-21 Nat Eng Co Apparatus for conditioning granular material using rotating spokes and aerating cleats
US3322404A (en) * 1965-04-22 1967-05-30 Nat Eng Co Mixer including mulling wheel with resilient tire means to facilitate wheel rotation
US3554499A (en) * 1969-03-27 1971-01-12 Royer Foundry & Machine Co Sand aerating device
US3903957A (en) * 1972-01-19 1975-09-09 Papenmeier Kg Maschf Guenther Process for cooling granular materials being mixed
US4343554A (en) * 1979-09-01 1982-08-10 Taiyo Chuki Co., Ltd. Kneader for particulate to granular materials
CN106363126A (zh) * 2016-11-30 2017-02-01 攀枝花市蓝天锻造有限公司 混砂机

Also Published As

Publication number Publication date
SE301532B (de) 1968-06-10
DE1233701B (de) 1967-02-02
GB1069154A (en) 1967-05-17
CH427476A (de) 1966-12-31

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