US3675697A - Grain cleaning machine - Google Patents

Grain cleaning machine Download PDF

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Publication number
US3675697A
US3675697A US81082A US3675697DA US3675697A US 3675697 A US3675697 A US 3675697A US 81082 A US81082 A US 81082A US 3675697D A US3675697D A US 3675697DA US 3675697 A US3675697 A US 3675697A
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US
United States
Prior art keywords
grain
housing portion
funnel
centrifuge
air
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
US81082A
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English (en)
Inventor
Roman Muller
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Buehler AG
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Buehler AG
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force

Definitions

  • This housing portion Rdmm possesses a throughflow or throughpassage communicating UNITED STATES PATENTS with the aforesaid annular compartment and additionally possesses an Inlet for air communicating with the internal space of Rl7,829 l0/l930 Div ..24l/7 th ntrif Beneath the housing portion there is arranged l06,l77 8/ I870 Kn x 5 a collecting basin leading to a first withdrawal means, there 107.486 1370 g also being provided a second withdrawal means which, when 789.259 /1 Cornwall Mum/236 the machinery operates so as to carry out a dry treatment.
  • ROMAN MULLER M9640 amoEmz ORNEYS GRAIN CLEANING MACHINE BACKGROUND OF THE INVENTION The present invention relates to a new and improved machine for cleaning grain or the like by means of a centrifuge having an upstanding or vertically disposed axis and a rotor simultaneously constructed as an air blower and further incorporates a cylindrical jacket or shell equipped with openings surrounding the rotor.
  • the rotors of the centrifuges of these machines are constructed and designed so as to withdraw or suck air out of the interior of the rotor and to force or press such against the cylindrical jacket equipped with openings or recesses.
  • the air escapes from a discharge located at the region of the upper end of the equipment.
  • a primary objective of the present invention relates to an improved machine for the cleaning of grains or the like which is not associated with these operational limitations of the prior art and affords greater versatility for the grain cleaning operation.
  • a still further and more specific objective of the present invention relates to the provision of improved machinery for cleaning grain, whereby the grain can be selectively cleaned with a wetor dry cleaning process with the introduction of water and air or air alone, as desired.
  • Yet a further significant object of the present invention relates to grain cleaning equipment which is designed and constructed in such a manner that the cleaning operation performed thereby can be readily adapted to the desired cleaning rocess to which the grain material is to be subjected, conversion of the equipment from one type operation to another being possible through the performance of a few simple manipulations, easy to carry out by even unskilled or relatively skilled workers.
  • a further significant object of the present invention relates to an improved machine for the cleaning of grains which is relatively simple in construction, economical to manufacture, extremely efficient and reliable in operation, easy to clean, and requires a minimum of servicing and maintenance.
  • Another noteworthy object of the present invention relates to an improved design of grain cleaning equipment wherein the components constituting the equipment itself are designed and arranged in such a fashion that the interior of the equipment can be easily and effectively cleaned when desired and wherein certain components of the equipment which must be periodically cleaned and/or replaced are readily accessible for these purposes.
  • the inventive machine for the cleaning of grains which is of the aforementioned type embodying a centrifuge having a vertical axis and a rotor simultaneously designed as an air blower as well as a substantially cylindrical jacket equipped with openings and surrounding the rotor, is manifested by the features that the grain material which is to be cleaned is upwardly conveyed from below along the centrifuge in a direction towards and to a discharge or outlet.
  • the impurities together with the water and air or the air alone fall, within an annular compartment bounded at the inside by the cylindrical jacket, downwardly to a funnel-shaped housing portion located beneath the centrifuge.
  • This housing portion is equipped with a throughpassage communicating with the unnular compartment and with an inlet for the air communicating with the interior of the centrifuge. Furthermore, a collecting basin leading to a first withdrawal conduit or line is arranged beneath this housing portion, and additionally. a second withdrawal line or conduit is provided which, when the equipment operates to perform a dry treatment, that is when only using air as the fluid medium, can be operatively connected in flow communicating manner with the throughpassage by means of an associated connection piece.
  • FIG. 1 is a schematic view of a first embodiment of inventive grain cleaning machinery, partially shown in front view and partially in longitudinal sectional view;
  • FIG. 2 is a cross-sectional view, on a reduced scale, of the grain cleaning machine shown in FIG. 1, taken substantially along the line ll-ll thereof;
  • FIGS. 3 to 6 inclusive depict respective schematic views of the lower portion of the inventive equipment for different operating conditions:
  • FIG. 7 is a perspective view of the upper portion of the centrifuge of the grain cleaning machinery of FIGS. 1 to 6 inclusive;
  • FIG. 8 is a cross-sectional view of the grain cleaning equipment of the invention at the region of the rotor of the centrifuge.
  • FIG. 9 is a schematic diagram illustrating the displacement path of the grain between the blades of the rotor of the centrifuge.
  • FIGS. 1 and 2 the exemplary embodiment of inventive machinery for the cleaning of grains as illustrated in FIGS. 1 and 2 will be seen to be composed of a housing I supported on the ground 2 by means of three column members 3 anchored to the ground and arranged externally of such housing 1.
  • the housing I is formed as a bipartite structure consisting of both housing portions la and lb which are arranged in superim posed fashion and detachably fixed to the column members 3.
  • a vertically disposed or upright shaft 4 is situated centrally of the equipment, shaft 4 being rotatably mounted at both its lower and upper ends within the housing I, for instance by means of the bearing arrangements 4a.
  • Shaft 4 piercingly extends through the upper end of the housing 1 and by means of its upper shaft end which protrudes outside of such housing is drivingly connected with a suitable drive motor 6 through the agency of an appropriate belt member 5.
  • this shalt member supports at its upper and lower end a respective attachment collar 7 at which there is secured the rotor 8 of the centrifuge, generally designated by reference character 50.
  • a further rotor 9 arranged directly beneath the rotor 8.
  • This rotor 9 operates within an annular-shaped vessel or basin 10 which is open at its top region.
  • Rotor 9 additionally is equipped with blades II or equivalent structure which, during rotation of rotor 9, brings about an upwardly effective conveying action.
  • Located at the lower region of the equipment is an infeed funnel 12 for the grain which communicates with the aforementioned basin or vat 10. Above this vat 10 and flush with the outer wall thereof there is located a substantially cylindrical peeling jacket 13 equipped with openings or recesses 13a.
  • Jacket 13 is stationarily arranged and encircles in spaced relationship the rotor 8 of the centrifuge 50. Further, the peeling jacket 13, in turn, is surrounded in spaced relationship by a cylindrical sheet-metal jacket I4, jacket 14 being mounted at its upper and lower ends at the cylindrical outer wall 15 of the equipment housing I.
  • the lower cylindrical outer wall 15 of the housing I likewise encircles at a spacing the outer wall of the basin or vat I0, with the exception of the region where there is located the infeed funnel I2, so that externally of the peeling jacket 13 there is formed an annulus or ring-shaped compartment 16 which is aligned with a further compartment 17 located directly below ring-shaped compartment 16 and which circumferentially extends through an angle of about 270".
  • Compartment I7 is open at its lower end, as shown.
  • the annular compartment I6 is closed at its lower end by means of non-illustrated sheet metal members which extend at an inclination and are directed into the compartment l7.
  • a downwardly tapering discharge funnel 18 is mounted at the lower end of the machine housing I, the axis of funnel l8 aligning with the lengthwise axis of the machine.
  • This discharge funnel I8 possesses a throughflow passageway I9 which extends along the outer periphery of the discharge funnel I8, throughflow passageway I9 being open at its upper and lower ends and communicating with the compartment 17. Furthermore, throughflow passageway l9 extends over the same circumferential region as the compartment 17.
  • this discharge funnel I8 is closed at its lower end by means of a plate member 20 and at that region in which the throughflow passageway I9 does not extend such discharge funnel I8 is laterally open and thus forms an inlet 21 for air which communicates with the internal compartment 22 of the equipment.
  • the grain and the water are infed into the infeed or delivery funnel I2, flowing from this location into the vat or basin 10.
  • the grain together with the water is acted upon by the rotating rotor 9 and is upwardly conveyed. Due to this action, the grain and the water are uniformly admixed and at the same time thoroughly washed.
  • the grain which is conveyed in upward direction by the rotor 9 then arrives at the operable zone of the rotor 8 of the centrifuge 50.
  • This rotor 8 of such centrifuge is equipped with beater elements 33, which are not specifically shown in FIG. 1, although will be discussed shortly in conjunction with the description of FIG. 8, such beater elements 33 having blades 36 (FIG.
  • this rotor 8 is constructed as an open rotor structure and sucks air out of the inlet 21, pressing such radially towards the outside through the peeling jacket or shell 13.
  • the grain during its throughpassage along the centrifuge 50, is flung or centrifuged against the peeling jacket [3 owing to the presence of the centrifugal forces.
  • the water adhering to the grain is likewise flung or centrifuged towards the outside, and simultaneously the grain is scrubbed or cleaned at the peeling jacket 13 and freed of impurities or other undesirable foreign particles.
  • FIGS. 3 to 6 illustrate difl'erent structural embodiments of the connection components which can be coupled in operable relationship with the discharge funnel 18 at the lower end of the equipment.
  • FIGS. 3 and 4 show one form of structural embodiment of this portion of the equipment and FIGS. 5 and 6 another form.
  • the withdrawal means or conduits In the first arrangement depicted in FIGS. 3 and 4 the withdrawal means or conduits, to be considered more fully shortly, are positioned so as to extend laterally away from the equipment and in the second embodiment of FIGS. 5 and 6 the withdrawal means or conduits are constructed as drop tubes or conduits.
  • Both the equipment structure of the embodiment of FIG. 3 as well as that of the embodiment of FIG. 5 illustrate the lower portion of the machinery during such time as it operates according to a wet process, and the illustrations of the lower portion of the equipment for the respective embodiments of FIGS. 4 and 6 show such equipment structure when working according to a dry process.
  • a collecting basin or trough 25 is formed at the bottom or floor 2 which is located in spaced relationship beneath and from the discharge funnel 18.
  • a withdrawal means here shown as a withdrawal or removal line 26 which is laterally directed away from such collecting basin beneath the floor 2.
  • a riser conduit 27, likewise providing withdrawal means, is mounted adjacent the machinery, conduit 27 being provided with a horizontal conduit portion 27a at its lower end, horizontally extending stud or conduit portion 27a terminating at a lateral spacing from the outer wall of he discharge funnel 18.
  • the region below the discharge funnel 18 is maintained free, so that the water together with the impurities flowing through the throughpassage means 19 can discharge via the collecting basin 25 at the floor 2 into the withdrawal conduit 26 for further conveyance to a suitable recovery installation.
  • connection piece 28 there is mounted between the lower end of the discharge funnel 18 and the ascending or riser conduit 27 a connection piece 28. Now the air together with the impurities departing from the throughflow means 19 is conveyed via the connection piece 28 and by means of a suitable non-illustrated blower provided at the withdrawal conduit 27 to such withdrawal conduit.
  • a collecting basin or trough 25 With the embodiment of equipment structure depicted in FIGS. and 6 there is also once again formed at the ground or base 2, beneath the discharge funnel 18, a collecting basin or trough 25.
  • a first drop conduit 29 is arranged near the neighborhood of the outer periphery of this collecting basin and at the center of such collecting basin there is arranged a second drop or fall conduit 30 which is in alignment with the lengthwise axis of the machine.
  • FIGS. 7 to 9 there will be more fully explained the construction of the rotor 8 of the centrifuge 50 used in the equipment arrangement of FIG. 1.
  • this rotor 8 possesses so-called beater elements 33 which embody two opposed, substantially roofshaped flexed wall elements 33a, 33b assembled together to define or form hollow ledges, as best seen by referring to FIG. 8.
  • beater elements 33 extend between the two attachment collars 7 and are uniformly distributed about the periphery of the rotor 8 and are connected with such two collars 7.
  • the rotor 8 will be understood to revolve in the clockwise direction.
  • each beater element 33 which is situated forwardly in the clockwise direction and disposed laterally with respect to the rearward disposed wall portion 33b, forms the working wall portion and will be seen to be equipped with a radially inwardly situated wall section 34 and a radially outwardly situated wall section 35. Both sections 34 and 35, viewed from their radially innermost edge, extend rearwardly with respect to the direction of rotation of the rotor 8.
  • the radially inward situated wall section 34 forms an angle of about 30" with the tangential plane at the periphery of the collar and taken through the radial innermost edge of such wall section 34.
  • the radial outer wall section 35 is flexed towards the inner wall section 34 rearwardlywith respect to the direction of rotation of the rotor 8.
  • each radial outer wall section 35 there are arranged the spaced superimposed blade members 36, as best observed by referring to FIG. 7.
  • the blades 36 in each instance, will be seen to comprise, when viewed in the direction of rotation of the rotor 8, a forwardly or leading situated horizontally extending blade section 37 with which merges a rearwardly upwardly directed or ascending blade section 38.
  • Blade section 38 is of triangular configuration and terminates at a point or tip 38a.
  • the horizontal blade sections 37 which are disposed adjacent to one another in the peripheral direction of the rotor 8, in each instance, will be seen to be disposed at a common respective plane.
  • the grain granule is then deflected downwardly against the upper surface of the ascending blade section 38 of the next lower blade of the same blade row, and from this location the described operation again repeats between the next successive blades. in this manner the grain is upwardly conveyed relatively quickly and along a path of travel which is as long as possible-this being advantageous for the cleaning operation itself.
  • the ascending blade section 38 of each of the blades 36 terminates in a tip portion 380, as previously explained, it is possible to efi'ectively prevent that the grain granules will be centrifuged or thrown against a blade edge and damaged.
  • a machine for cleaning grain and the like of impurities comprising:
  • centrifuge means with an upper and lower end and having a substantially vertically disposed axis and a rotor means simultaneously defining an air blower provided for said housing;
  • g. means forming an annular compartment bounded at the inside by said cylindrical jacket member, wherein the impurities together with a fluid medium, either water and air or air alone, respectively, fall downwards through said annular compartment into said substantially funnel-shaped housing portion;
  • said funnel-shaped housing portion incorporating means defining a throughflow passageway communicating with said annular compartment;
  • said funnel-shaped housing portion further including air inlet means communicating with the interior of said centrifuge means;
  • l a connecting element for operably connecting in flow relationship said second withdrawal means with said throughflow passageway when the grain cleaning machine performs a dry treatment of the grain.
  • both said funnel-shaped housing portion and said centrifuge means possess a respective lengthwise axis which are in alignment with one another, said throughflow passageway extending along the outer periphery of said funnel-shaped housing portion over the major portion of its peripherial surface, said throughflow passageway having an inlet portion located essentially directly beneath said annular compartment.
  • said throughflow passageway further includes an outlet portion, said funnel-shaped housing portion being closed at its lower end with the exception of the outlet region of said outlet portion, said air inlet means being located laterally between both peripheral ends of said throughflow passageway.
  • said housing is constructed as a bipartite member both portions of which are disposed above one another in superimposed fashion, and column means located externally of said housing to which said housing portions are detachably connected.
  • substantially upright centrifuge means embodying an upper and lower end and a rotor means forming an air blower arranged within said housing; said lower housing portion being located beneath said centrifuge means;
  • g. means forming an annular compartment, wherein the impurities together with a fluid medium, either water and air or air alone, respectively, fall downwards through said annular compartment into said lower housing portion;
  • said lower housing portion incorporating means defining a throughflow passageway communicating with said annular compartment;
  • said lower housing portion further including air inlet means communicating with the interior of said centrifuge means;
  • connecting means interposed in flow relationship between said second withdrawal means and said throughflow passageway when the grain cleaning machine undertakes dry treatment of the grain.

Landscapes

  • Centrifugal Separators (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Processing Of Solid Wastes (AREA)
  • Seasonings (AREA)
US81082A 1969-10-15 1970-10-15 Grain cleaning machine Expired - Lifetime US3675697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1545469A CH517527A (de) 1969-10-15 1969-10-15 Maschine zum Reinigen von Getreide

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US3675697A true US3675697A (en) 1972-07-11

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US81082A Expired - Lifetime US3675697A (en) 1969-10-15 1970-10-15 Grain cleaning machine

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US (1) US3675697A (es)
CH (1) CH517527A (es)
DE (1) DE2050736A1 (es)
ES (1) ES384275A1 (es)
GB (2) GB1297019A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133257A (en) * 1976-03-02 1979-01-09 Toshihiko Satake Rice pearling apparatus with humidifier
US4996917A (en) * 1986-08-05 1991-03-05 Dole Dried Fruit And Nut Co. Apparatus for splitting closed shell pistachio nuts
WO2002031420A1 (en) * 2000-10-10 2002-04-18 The Conair Group, Inc. Centrifugal pellet dryer apparatus
US20080094241A1 (en) * 2006-10-24 2008-04-24 Hideo Igami Method and apparatus for achieving bi-axial tilt monitoring using a single-axis tilt monitoring device
US8205350B2 (en) 2008-09-02 2012-06-26 Gala Industries, Inc. Dryer system with improved throughput
CN111687044A (zh) * 2020-06-20 2020-09-22 杨木俭 一种建筑工程用沙石离心筛分设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2402600A (en) * 2003-06-13 2004-12-15 Danisco Removing enzymes on grain

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US17829A (en) * 1857-07-21 Sawing-mill
US106177A (en) * 1870-08-09 Improvement in grain-separators and scourers
US107486A (en) * 1870-09-20 Improvement in grain-scourers
US789259A (en) * 1904-09-07 1905-05-09 Barnard And Leas Mfg Company Grain scourer and separator.
US2105325A (en) * 1936-01-13 1938-01-11 John A Mcbrady Grain scouring machine
US2616466A (en) * 1948-06-07 1952-11-04 Lindner Paul Machine for husking cereal grains
US2698039A (en) * 1951-03-21 1954-12-28 Wesley E Pritchett Seed scourer and separator
US2970627A (en) * 1958-12-22 1961-02-07 Walter E Wiesenthal Barley debearder and seed cleaner
US3326256A (en) * 1964-01-10 1967-06-20 Procter & Gamble Process and apparatus for cleaning peanuts

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US17829A (en) * 1857-07-21 Sawing-mill
US106177A (en) * 1870-08-09 Improvement in grain-separators and scourers
US107486A (en) * 1870-09-20 Improvement in grain-scourers
US789259A (en) * 1904-09-07 1905-05-09 Barnard And Leas Mfg Company Grain scourer and separator.
US2105325A (en) * 1936-01-13 1938-01-11 John A Mcbrady Grain scouring machine
US2616466A (en) * 1948-06-07 1952-11-04 Lindner Paul Machine for husking cereal grains
US2698039A (en) * 1951-03-21 1954-12-28 Wesley E Pritchett Seed scourer and separator
US2970627A (en) * 1958-12-22 1961-02-07 Walter E Wiesenthal Barley debearder and seed cleaner
US3326256A (en) * 1964-01-10 1967-06-20 Procter & Gamble Process and apparatus for cleaning peanuts

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133257A (en) * 1976-03-02 1979-01-09 Toshihiko Satake Rice pearling apparatus with humidifier
US4996917A (en) * 1986-08-05 1991-03-05 Dole Dried Fruit And Nut Co. Apparatus for splitting closed shell pistachio nuts
WO2002031420A1 (en) * 2000-10-10 2002-04-18 The Conair Group, Inc. Centrifugal pellet dryer apparatus
US6438864B1 (en) 2000-10-10 2002-08-27 The Conair Group, Inc. Centrifugal pellet dryer apparatus
US6505416B2 (en) 2000-10-10 2003-01-14 The Conair Group, Inc. Centrifugal pellet dryer apparatus
US20080094241A1 (en) * 2006-10-24 2008-04-24 Hideo Igami Method and apparatus for achieving bi-axial tilt monitoring using a single-axis tilt monitoring device
US8205350B2 (en) 2008-09-02 2012-06-26 Gala Industries, Inc. Dryer system with improved throughput
US10119762B2 (en) 2008-09-02 2018-11-06 Gala Industries, Inc. Dryer system with improved throughput
CN111687044A (zh) * 2020-06-20 2020-09-22 杨木俭 一种建筑工程用沙石离心筛分设备
CN111687044B (zh) * 2020-06-20 2022-11-22 塔江建设有限公司 一种建筑工程用沙石离心筛分设备

Also Published As

Publication number Publication date
CH517527A (de) 1972-01-15
ES384275A1 (es) 1973-02-16
DE2050736A1 (de) 1971-04-22
GB1297019A (es) 1972-11-22
GB1297020A (es) 1972-11-22

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