US3866842A - Grinding mill - Google Patents

Grinding mill Download PDF

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Publication number
US3866842A
US3866842A US435854A US43585474A US3866842A US 3866842 A US3866842 A US 3866842A US 435854 A US435854 A US 435854A US 43585474 A US43585474 A US 43585474A US 3866842 A US3866842 A US 3866842A
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Prior art keywords
combination
grinding
region
opening
suction
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Expired - Lifetime
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US435854A
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English (en)
Inventor
Robert Linzberger
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Buehler AG
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Buehler AG
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Filing date
Publication date
Priority claimed from CH101273A external-priority patent/CH560069A5/xx
Priority claimed from CH1710373A external-priority patent/CH572767A5/xx
Application filed by Buehler AG filed Critical Buehler AG
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Publication of US3866842A publication Critical patent/US3866842A/en
Assigned to BUEHLER AG reassignment BUEHLER AG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 03/02/1990 Assignors: GEBRUEDER BUEHLER AG
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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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • 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
    • B02C4/28—Details
    • B02C4/286—Feeding devices

Definitions

  • ABSTRACT conduit conveys material to be ground fromthe region of the feed hopper to the region of the grinding gap.
  • a feeding arrangement feeds the ground material from the lower region through the outlet into a second pneumatic conduit, and a suction conduit is provided which has one open end portion communicating with the second pneumatic conduit and another open end portion located proximal to the grinding gap.
  • the suction conduit serves to aspirate air from the first pneumatic conduit into the second pneumatic conduit via the region of the grinding gap, so as to maintain suction in this region and alsovia the first pneumatic conduitin the feed hopper.
  • the present invention relates to a grinding mill, and more particularly to a grinding mill wherein material is ground between two cooperating grinding rollers defining with one another a grinding gap.
  • Grinding mills of this general type are already well known and they are part of the state of the art. They are used for grinding various types of material that are admitted to the grinding gap via a feed hopper, frequently such materials as various types of foodstuffs. Generally speaking, the feeding of many of the materials to be ground proceeds satisfactorily in the prior-art grinding mills where the material supplied to the grinding gap has a substantially uniform veil of material.
  • a pneumatic feed conduit is usedwhich serves to convey the material to the grinding gap, and at the air present at the end of the feed conduit is aspirated along the periphery of at least one of the grinding rollers in counterflow to the rotation of the same. This counteracts the tendency of the rapidly rotating grinding roller to take along the air in form of a boundary layer, and eliminates the interference which would otherwise be caused with the proper flow of the veil of material into the grinding gap.
  • a suction conveying conduit has the advantage that the necessary suction which is required for the op eration of the pneumatic feed conduit can be directly communicated from below the grinding gap to above the grinding gap where the pneumatic feed conduit is located, whereas if a pressure conduit is used an injector will have to be interposed.
  • Another object of the invention is to provide such an improved grinding mill which can be reliably and uniformly operatedeven at high rotational speed of its grinding rollers and at high throughput, i.e., in circumstances where a reliable and uniform feeding of the material to be ground is highly questionable in the priorart constructions due to the strong air currents which develop.
  • An additional object of the invention is to provide such an improved grinding mill in which any interference with the proper flow of the material and with the proper operation, resulting from variations in flow or pressure of air, will be reliably avoided.
  • Still a further object of the invention is to provide such an improved grinding mill wherein the various controls that most normally be carried out during the operation of the grinding mill, for instance the taking of samples or the like, can be carried out without the undesired escape of dust or the like, and in particular without causing any variation in the grinding effect itself, so that all controls and all samples that are taken will not be falsified by such undesiredinfluences.
  • a grinding mill in a combination which comprises wall means defining a' housing including a feed hopper and a downwardly converging chamber located below the feed hopper and having an upper region and a lower region provided with an outlet.
  • a pair of cooperating grinding rollers are arranged in substantial axial parallelism in the upper region of the chamber spaced from the feed hopper and defining with one another a grinding gap from which ground material drops into the lower region.
  • First pneumatic conduit means conveys material to be ground from the region of the feed hopper to the region of the grinding gap.
  • Second pneumatic conduit means is provided, and feed means feeds ground material from the lower region through the outlet into the second pneumatic conduit means.
  • Suction conduit means is provided, having one open end portion which communicates with the second pneumatic condiut means, and another open end portion which is located proximal to the grinding gap for aspirating air from the first pneumatic conduit means into the second pneumatic conduit means via the region of the grinding gap, whereby to maintain suction in the region of the grinding gap and via the first pneumatic conduit means in the feed hopper.
  • FIG. 1 is-a somewhat diagrammatic vertical section through a first embodiment of the invention
  • FIG. 2 is a view similar to FIG. 1, illustrating a second embodiment of the invention
  • FIG. 3 is a view similar to FIG. 2, illustrating a third embodiment of the invention.
  • FIG. 4 is a view similar to FIG. 3, illustrating a fourth embodiment of the invention.
  • FIG. is a view similar to FIG. 4, illustrating a fifth embodiment of the invention.
  • FIG. 6 is a front view of another embodiment of the invention.
  • FIG. 7 is a view similar to FIG. 1 but illustrating still a further embodiment of the invention.
  • reference numeral 1 identifies a housing including two frames 2 (only one shown) which are connected with one another by braces 3 extending normal to the plane of the drawing in FIG. 1, and by walls 4 extending in the same direction.
  • Mounted in the housing are two grinding rollers 6 and 7 of which the roller 6 is usually driven at a higher speed of rotation than the roller 7, with their direction of rotation being indicated by the arrows.
  • the rollers 6 and 7 define with one another a grinding gap from which ground material drops downwardly under the influence of gravity.
  • the right-hand side of the housing 1 in FIG. 1 is the front side, that is the side which must be accessible to an operator, whereas the left-hand side is the rear side.
  • the grinding mill is provided with a funnel-shaped hopper 9 which extends over the entire length of the rollers 6, 7, Le, normal to the plane of FIG. 1, and which communicates with a feed arrangement using a feed roller 10 and a damming member 11, the latter of which is pivotably mounted for movement about a pivot axis 12.
  • the feed roller 10 and the damming member 11 together serve to distribute the material coming from the hopper 9, so that it will be supplied in form of an even veil of material into the grinding gap 15.
  • the spacing of the member 11 with respect to the flows between them towards the gap 15, can be automatically regulated in a manner which is known per se and, therefore, need not be described herein.
  • the inlet baffle 13 of a pneumatic feed channel is arranged downstream of the feed roller 10 and serves to guide the material from the feed roller 10 into the pneumatic feed channel 14 wherein it is conveyed to the grinding gap 15.
  • the walls 4 of the housing form a closed interior for the housing, except for the presence of aspiration openings 22 which will be discussed later, in which suction can be maintained to prevent the escape of dust and the like.
  • the lower portion of the housing is configurated as a funnel-shaped region 19 which communicates via a lower outlet (shown, but not separately provided with a reference numeral) with a feeding arrangement through which ground material is removed from the funnel-shaped chamber 19.
  • the walls 4 are so con-v feed roller 10, and thereby the quantity of material that tion conduit through which the ground material is removed.
  • the conduit 31 is connected with an appropriate source of suction (not shown) and the injector 30 is provided with an inlet nipple 43 through which additional air may be allowed to enter, if necessary.
  • the grinding mill is provided in the upper region with a control flap 21 which forms an aspiration opening 22 together with the guide baffle 17, which opening 22 extends over the entire length (in direction normal to the plane in FIG. 1) of the housing.
  • the channels 18 are provided with a throttle gap 23, and the channel 18 associated with the grinding roller 6 is formed in the region of the gap 15 with an aspiration-controlling slide 24.
  • a suction conduit 41 extends to the region of the periphery of the roller 7, having an inlet end proximal to the grinding gap 15 and an outlet end which is connected with the conduit 31.
  • a throttle 42 which in the illustrated embodiment is adjustable. is interposed in the suction conduit 41.
  • the material to be ground is admitted into the hopper 9 from where it is conveyed by the rotating feed roller 10 into the feed channel 14.
  • a quantity of material being conveyed can be controlled by pivoting the member 11 so that it defines a larger or smaller gap with the periphery of the feed roller 10.
  • the air flow conditions are controlled and maintained in optimum parameters in each operating condition of the mill. This is done by the presence of the suction conduit 41 which, because of the manner in which it communicates with the gap 15 and the channel 14, makes it possible to provide such a control in the region of the gap 15.
  • the presence of the channel 41 makes it possible to maintain suction in the region of the gap 15 and thus also in the channel 14 and, to someextent, also in the hopper 9. Air is also drawn into the condiut 41 via the openings 22.
  • the channel 14- constitutes with the conduit 41 an independent feeding and air system, which makes'possible an optimum feeding of material to the gap 15, irrespective of the particular'type of material which is to be ground, and even at high speed rotation of the roller 6, 7 and high throughput of material.
  • the air flow in the channel 14 can be regulated, if necessary, by operating the throttle 42.
  • the material supplied by the feed roller 10 is engaged by the air stream entering the channel 14 in the region of the inlet baffle 13, and is accelerated and flung at relatively high speed into the grinding gap 15.
  • the air which issues in the region of the grinding gap 15 from the channel 14 is predominantly drawn into the suction conduit 41 and from there enters the conduit 31 where it serves as the conveying medium for the ground material which travels in the conduit 31.
  • a part of the air which enters through the opening 22 is diverted via the slide 24 into the channel 18 and serves to introduce the ground material into the injector 30.
  • the throttle 42 could be omitted, if desired, but in many instances its presence will be effica cious because it permits a control of the air flow, the pressure conditions and largely also the material flow conditions in the grinding gap 15,- if and when necessary.
  • the air flow could, of course, also be obtained in accordance with a desired parameter by appropriate dimensioning of the conduit 41 and/or the conduit 31.
  • the injector 30 could be eliminated in favor of a bucket wheel 44, but even in this case it is advantageous to aspirate the chamber 19. If additional air is required to be admitted for the operation, particularly in the lower portion of the conduit 3] intermediated the injector 30 and the point where the conduit 41 communicates with the conduit 31, then such additional air can be admitted via the inlet nipple 43 of FIG. 1.
  • the suction conduit is identified with reference numeral 27 and extends partly around the periphery of the roller 7 and along the rear wall of the housing or more particularly of the funnel-shaped chamber 19.
  • a seal 28 is interposed between the roller 7 and the conduit 27, so that the latter cannot directly communicate with the chamber 19.
  • FIG. 3 which again uses like reference numerals for like elements as in the preceeding embodiments, it will be seen that here the member 11 of FIG. 1 is replaced by a baffle 61 which is already known per se from the art and which is mounted for turning movement about a pivot 62.
  • the purpose and operation of the member62 is the same as that of the member 11.
  • the baffle 62 is provided with a longitudinally extending (normal to the plane of FIG. 3) arcuately curved portion 63 in order to guide the material to the inlet baffle 13 of the feed channel 14.
  • a compartment 65 is provided which is in part defined by the periphery of the grinding roller 6; it serves primarily to accommodate the air which issues-from the outlet end of the channel 14 and which is withdrawn via the suction conduit 66 that communicates with the compartment 65.
  • the air flow could be regulated by an opening the cross section of which could be controlled if desired.
  • the suction conduit 66 communicates with the con duit 31 via a conduit portion that connects it first with the bucket wheel 44 interposed in the outlet of the chamber 19 and then with the lower end of the conduit 31.
  • the bucket wheel 44 turns and discharges the ground material accomodated in each of its buckets or divisions, into the conduit which communicates with the conduit 31.
  • a small gap 68 exists between the channel l4 and the roller 7, and a small amount ofthe air issuing from the channel 14 escapes from this-gap 68 along the roller 7 and into the chamber 19.
  • the chamber 19 can be placed under suction, for instance via the conduit 66.
  • This embodiment incidentally, has the advantage that due to the cross-sectional configuration of the chamber 19 it is possible to locate the drive motor 69 which drives the rollers 6, 7 and 10 in a manner not illustrated, but conventional, within the housing inter mediate the two frames 2 thereof, thereby both affording good access to the drive and at the same time providing a space-saving construction.
  • FIG/4 is reminiscent of that in FIG. 3, and like reference numerals identify like components as before.
  • the suction conduit 66 is connected with the suction side of a blower 71.
  • the pressure side of the blower 71 communicates with a conduit 72 which in turn is connected with the concuit 31, and injector 67 being formed which corresponds to the injector 30 of FIG. 1 in structure and in operation.
  • the conduit 31 could be operated as a pressure conduit or as a suction conduit, depending upon particularrequirements, by making simple modifications to convert from one type to another.
  • FIG. 5 is also reminiscent of that in FIGS. 3 and 4.
  • the conduit 72 is 'connectedvia an outlet 81 with the lower portion of the chamber 19.
  • a curved injector 82 communicates the outlet of the chamber 19 with the conduit 31.
  • the orientation ofthe outlet 81 is such that air which is expelled from it into the chamber 19 has a main component of flow which is directed towards the injector 82.
  • This embodiment is particularly suitable if materialis to be ground, and subsequently inserted into the conduit 31, which is difficult to convey and where the particular effect of the air stream issuing from the outlet 81 is required in order to aid the entry of the material into the injector 82.
  • a seal is provided between the wall 84 of the channel 14 and the roller 7, to prevent the entry of air which travels around with the periphery of the roller 7, into the grinding gap 15.
  • FIGS. 35 I have illustrated how the suction conduit 66 can be located in part at least outside the housing of the grinding mill.
  • FIG. 6 shows that a much more space-saving construction can be ob tained if the suction conduit 66 is so located that it is laterally adjacent the chamber 65, which can be given the configuration of the chamber 19 in FIG. 6, for example, and if the conduit 66 extneds along the frames 2 to the injector 67 and from there communicates with.
  • Like reference numerals again identify the same elements as in the preceding embodiments.
  • the feed hopper 9 has located in it a rotating vane wheel 16 or the like, which serves to constantly loosen up the material in the hopper 9 and prevent it from caking.
  • the suction conduit 27 extends partly about the periphery of the roller 7 and extends along the rear wall 4 bounding the chamber 19, in a manner analogous to FIG. 2.
  • a seal 28 is provided between the conduit 27 and the roller 7 to prevent interference of pressure variations in the chamber 19 with the conditions in the conduit 27.
  • a flap 30 is provided in association with the injector 30. This is a particularly advantageous solution, because the control can be effected with very simple means.
  • the flap 30' is, of course, pivotable about the indicated pivot axis, as is the flap 30' in FIG. 2.
  • the rear end wall portion 97 bounding the chamber 19 is removable, so as to facilitate access to the interior, particularly to the lower part of the conduit 27 and to the injector 30.
  • An upright hollow shaft 90 is pro-' vided which constitutes an extension of the conduit 27 and reaches to the upper edge 91 of the housing 1, or to the level of the hopper 9.
  • the upper open end of the shaft 90 is closed from the outside by a closure member 92 which is advantageously of wood, as illustrated in the cross-sectional showing of FIG. 7, and which airtightly closes the open end of the shaft 90 with a flange 93.
  • a portion 94 of the member 92 extends into the shaft 90 and has a side facing towards the interior of the hopper 9 and being arcuately curved so that an opening 95 which communicates the hopper 9 with the shaft 90 is provided with an aerodynamically advantageous cross section.
  • a flap 96 is provided which can increase or decrease the effective cross section of the opening 95.
  • the flap 96 could be replaced with another control member, for instance a sliding member or the like, and appropriate levers can be utilized for effecting this movement from the exterior of the mill.
  • the flap 96-or analogous element must be so configurated that material which drops into the hopper 9 in the direction of the arrow, cannot enter into the opening 95 and thus cannot be carried along by the air stream which enters from the hopper 9 through the opening'95 into the shaft 90. On the other hand, there is nothing to interfere with the entry of such air through the opening 95, which means that excess air is removed from the hopper 9 and the escape of dust and the like is suppressed.
  • the hopper 9 is constantly under a slight suction.
  • the flap 96 or its analogous replacement consititutes a separator, inasmuch as very fine particles constituting a part of the material admitted into the hopper 9 can be carried by the air through the opening 95 and into the shaft 90.
  • This is permissible because such very fine parts which are smaller than the particles of ground material can, of course, readily be admixed with the ground material particles without any difficulties.
  • This solution makes it possible to eliminate many additional conduits, blowers, filters and the like, which were previously necessary, because the conduit 31 makes it possible to appropriately and properly control the entire air flow and air pressure conditions in the mill, and to regulate them to an optimum extent. 7
  • the grinding mill according to the present invention is used for grinding foodstuffs for human use, for instance various grains or the like, it is frequently necessary to remove samples of the ground material directly from the chamber 19, in order to test for possible changes in the dimension of the gap 15 and consequent changes in the granulation of the ground product, changes in the moisture content or the like. For this reason, all grinding mills of the type in question are provided with a control door 26 through which such access is afforded.
  • the advantages of the present invention are particularly emphasized when one attempts to remove such a sample, because the opening of the control door 26 in a grinding mill according to the present invention in no way influences the air flow and air pressure conditions in the grinding mill, and thus can under no circumstances disadvantageously. influence the operation of the mill.
  • the shaft 90 in the embodiment of FIG. 7 could, if desired, be provided with the member 92v at a lower level, and laterally rather than on top. However, in most instances it has been found that the location shown in FIG. 7 is the most advantageous one. It will be appreciated from a consideration of FIG. 7 that both the shaft 90 and the conduit 27 can be simply and readily cleaned if and when this is necessary, a consideration which is important in particularly those instances where foodstuffs for human consumption are being ground.
  • the grinding mill according to the present invention improves on the economy of operation which heretofore could be obtained with analogous grinding mills.
  • the transportation of ground material from the chamber 19 is completely independent of the supply of material to the grinding gap, and the grinding of the material in the gap. This means that in particular the entry of the material from the hopper 9 to the grinding gap 15 can be controlled to conditions which are considered optimum, under all circumstances and without having to consider the removal of the ground material.
  • the infiltrated air which enters when the door 26 is opened for removal of a sample or the like, does in no way influence the proper operation, such as the grinding itself, and thus it is now possible to obtain a sample which is not falsified by a temporary change in the operating conditions that occurs in the prior art when a door similar to the door 26 is opened.
  • the air required for the transportation of material in the channel 14 can in its entirety be used for subsequent transportation of ground material in the-conduit 31, without requiring separate aspiration devices.
  • the channels 18 may be provided for only one of the rollers 6 or for both of them. It is particularly advantageous if they are provided for both of the rollers, because this eliminates the so called fioating" of material and causes a partial cooling of the rollers which is desirable.
  • the conduit 31 can be operated as a pressure conduit, rather than as a suction conduit. However, if desired, it can nevertheless be in addition connected with a source of suction, in whichcase the conveying effectiveness will be further enhanced. However, it is then important to assure that the connection of the pressure side of the blower, such as the blower 71, with the conduit or passage having the feeding arrangement (such as the bucket wheel or the injector) therein be at the upstream side of the feeding arrangement.
  • FIG. 6 is particularly advantageous in terms of its reduced space requirements, because due to the fact that the conduit or conduits 66 are located laterally of the chamber 65 (equivalent to the chamber 19) extending along the back thereof, reduces the depth of the mill from the front towards the rear side thereof. It is particularly advantageous in applications where space is at a premium and where two of the grinding mills must always be arranged back-toback.
  • a combination comprising wall means defining a housing including a feed hopper and a downwardly convergent chamber located below said feed hopper and having an upper region and a lower re-- gion provided with an outlet; a pair of cooperating grinding rollers arranged in substantial axial parallelism in said upper region of said chamber spaced from said feed hopper and defining with one another a grinding gap from which ground.
  • first pneumatic conduit means for conveying material to be ground from theregion of said feed hopper to the region of said grinding gap; second pneumatic conduit means; feed means for feeding ground material from said lower region through said outlet into said second pneumatic conduit means; and suction conduit means having one open end portion communicating with said second pneumatic conduit means, and another open end portion located proximal to said grinding gap for aspirating air from said first pneumatic conduit means into said second pneumatic conduit means via the region of said grinding gap, whereby to maintain suction in the region of said grinding gap.
  • said feed means comprises injector means for feeding the ground material by injector action into said second pneumatic conduit means
  • said injector means comprises an adjustable control flap for varying said injector action.
  • said chamber is funnel-shaped and has a front wall and a rear wall; and wherein said suction conduit means extends along said rear wall.
  • suction conduit means forms a passage which extends partly about the periphery of one of said grinding rollers and is in part defined by said periphery.
  • suction conduit means includes a substantially vertical hollow shaft extending in the region of said rear wall from said lower region to the region of said feed hopper.
  • said varying means comprises a pivotally suspended flap which is so configurated as to direct material which is being admitted into said hopper away from opening said shaft.
  • said varying means comprises a slide member which is so configurated as to direct material which is being admitted into said hopper, away from said opening of said shaft.
  • said shaft has an additional opening located upwardly of the first-mentioned opening; and further comprising a removable closure member closing said additional opening and having a portion which extends into said shaft towards said first-mentioned opening, said portion of said closure member having a side facing towards said first-mentioned opening and being rounded so as to define a flow guide for matter entering via said first-mentioned opening.
  • said throttling means comprises an adjustable throttling flap for varying the suction which acts in the region of said grinding gap and in said feed hopper.
  • said wall means comprises a wall portion which together with one of said grinding rollers defines a compartment that communicates with said grinding gap; and wherein said other open end portion of said suction conduit means communicates with said compartment.
  • blower means having a suction side connected with said suction conduit means, and a pressure side connected with said first pneumatic conduit means upstream of said grinding gap.
  • said feed means comprises a conduit communicating with said outlet and with said suction conduit means; and wherein said suction side of said blower means communicates with said conduit upstream of said outlet and said suction conduit means.
  • said feed means comprises injector means communicating with said outlet; and wherein said pressure side of said blower means has a discharge opening which communicates with the interior of said chamber in said lower region and has such an orientation that air expelled from said opening has a major component of movement in direction towards said outlet.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Harvester Elements (AREA)
  • Massaging Devices (AREA)
US435854A 1973-01-24 1974-01-23 Grinding mill Expired - Lifetime US3866842A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH101273A CH560069A5 (en, 2012) 1973-01-24 1973-01-24
CH1710373A CH572767A5 (en, 2012) 1973-12-06 1973-12-06

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US3866842A true US3866842A (en) 1975-02-18

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US435854A Expired - Lifetime US3866842A (en) 1973-01-24 1974-01-23 Grinding mill

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US (1) US3866842A (en, 2012)
JP (1) JPS5513782B2 (en, 2012)
CA (1) CA1016923A (en, 2012)
CS (1) CS170155B2 (en, 2012)
DD (1) DD110435A5 (en, 2012)
DE (2) DE2462414A1 (en, 2012)
ES (1) ES422379A1 (en, 2012)
FR (1) FR2214526B1 (en, 2012)
GB (1) GB1401415A (en, 2012)
IT (1) IT1007568B (en, 2012)
NL (1) NL178753C (en, 2012)
SU (1) SU572183A3 (en, 2012)

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US5894773A (en) * 1996-08-30 1999-04-20 Owens Corning Fiberglas Technology, Inc. System for forming and cutting a mineral fiber tow
US6129296A (en) * 1999-06-08 2000-10-10 Poarch Bros. Inc. Double roll peg feeder assembly for flaking mills
US20060124000A1 (en) * 2002-11-13 2006-06-15 Buhler Ag System for dehulling by cylinder provided with a pneumatic conveyor
CN107787250A (zh) * 2015-02-23 2018-03-09 布勒股份公司 辊磨机、抽吸组件和用于改造辊磨机的方法
KR20180070619A (ko) * 2015-10-19 2018-06-26 콜드 제트 엘엘씨 블래스트 매체 분쇄기
CN109042810A (zh) * 2018-07-19 2018-12-21 杨亚洲 一种猪头肉用绞碎机构
US10751722B1 (en) * 2018-10-24 2020-08-25 Pearson Incorporated System for processing cannabis crop materials
CN112892685A (zh) * 2021-03-08 2021-06-04 南召县长和实业有限公司 一种钙粉生产用筛分装置
US11534770B1 (en) 2017-07-26 2022-12-27 Pearson Incorporated Systems and methods for step grinding
US11751507B1 (en) 2019-10-31 2023-09-12 Hemp Processing Solutions, LLC Crop harvesting system with plant stripping apparatus
US11826762B1 (en) 2019-12-11 2023-11-28 Pearson Incorporated Grinding roll improvements

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CH658202A5 (de) * 1982-03-16 1986-10-31 Budapesti Elelmiszeripari Gepg Mahlanlage zum vermahlen von getreide und aehnlichen produkten.
DE3742141A1 (de) * 1987-12-11 1989-06-22 Krupp Polysius Ag Walzenmuehle
DE3839419A1 (de) * 1988-11-22 1990-05-23 Krupp Polysius Ag Vorrichtung zur materialzufuehrung zu einem anlagenteil
DE19651836A1 (de) * 1996-12-13 1998-06-18 Buehler Ag Speisemodul für einen Walzenstuhl
RU2140322C1 (ru) * 1998-11-10 1999-10-27 Старостин Виталий Витальевич Мукомольный вальцовый станок
ES2824761T3 (es) 2018-05-25 2021-05-13 Buehler Ag Dispositivo de distribución-dosificación para un molino de cilindros, molino de cilindros con un dispositivo de distribución-dosificación de este tipo y procedimiento para moler material a moler
CN113634354B (zh) * 2021-10-18 2021-12-31 徐州筑之邦工程机械有限公司 一种具有杂质去除功能的饲料原材料粉碎机
CN114570469B (zh) * 2022-01-26 2023-07-18 江苏吉能达环境能源科技有限公司 一种辊压机喂料装置
CH719887A1 (de) * 2022-07-12 2024-01-31 Swisca Ag Speisungsvorrichtung und Walzwerk.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US279067A (en) * 1883-06-05 Grinding mill
US1188323A (en) * 1914-11-21 1916-06-20 True B Richardson Aspirating-shoe.
US1991757A (en) * 1930-07-28 1935-02-19 Carl Bergmann Tobacco cutting device
US2925226A (en) * 1955-12-21 1960-02-16 Pratique Jean Roller mills
US3167259A (en) * 1961-03-08 1965-01-26 Arthur H Pitchford Method and apparatus for grinding and/or blending
US3468488A (en) * 1965-11-30 1969-09-23 Buehler Ag Geb Automatic control of feed material in a comminuting mill
US3545686A (en) * 1968-03-15 1970-12-08 Du Pont Shredder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190900221A (en) * 1909-01-05 1909-10-14 Simon Ltd Henry Improvements in and connected with Flour Milling.
US3069995A (en) * 1960-05-04 1962-12-25 Allis Chalmers Mfg Co Compacting device
CH504230A (de) * 1969-03-12 1971-03-15 Buehler Ag Geb Speisevorrichtung für einen Müllerei-Walzenstuhl

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US279067A (en) * 1883-06-05 Grinding mill
US1188323A (en) * 1914-11-21 1916-06-20 True B Richardson Aspirating-shoe.
US1991757A (en) * 1930-07-28 1935-02-19 Carl Bergmann Tobacco cutting device
US2925226A (en) * 1955-12-21 1960-02-16 Pratique Jean Roller mills
US3167259A (en) * 1961-03-08 1965-01-26 Arthur H Pitchford Method and apparatus for grinding and/or blending
US3468488A (en) * 1965-11-30 1969-09-23 Buehler Ag Geb Automatic control of feed material in a comminuting mill
US3545686A (en) * 1968-03-15 1970-12-08 Du Pont Shredder

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5894773A (en) * 1996-08-30 1999-04-20 Owens Corning Fiberglas Technology, Inc. System for forming and cutting a mineral fiber tow
US6129296A (en) * 1999-06-08 2000-10-10 Poarch Bros. Inc. Double roll peg feeder assembly for flaking mills
US20060124000A1 (en) * 2002-11-13 2006-06-15 Buhler Ag System for dehulling by cylinder provided with a pneumatic conveyor
US10946385B2 (en) 2015-02-23 2021-03-16 Bühler AG Roller mill, aspirating assembly, and method for retrofitting a roller mill
CN107787250A (zh) * 2015-02-23 2018-03-09 布勒股份公司 辊磨机、抽吸组件和用于改造辊磨机的方法
KR20180070619A (ko) * 2015-10-19 2018-06-26 콜드 제트 엘엘씨 블래스트 매체 분쇄기
CN108367411A (zh) * 2015-10-19 2018-08-03 冷喷有限责任公司 喷射介质粉碎机
US11766760B2 (en) 2015-10-19 2023-09-26 Cold Jet, Llc Method of comminuting particles
US11607774B2 (en) 2015-10-19 2023-03-21 Cold Jet, Llc Blast media comminutor
CN108367411B (zh) * 2015-10-19 2020-12-25 冷喷有限责任公司 喷射介质粉碎机
US11534770B1 (en) 2017-07-26 2022-12-27 Pearson Incorporated Systems and methods for step grinding
CN109042810B (zh) * 2018-07-19 2020-11-20 龙庄润集团有限公司 一种猪头肉用绞碎机构
CN109042810A (zh) * 2018-07-19 2018-12-21 杨亚洲 一种猪头肉用绞碎机构
US10751722B1 (en) * 2018-10-24 2020-08-25 Pearson Incorporated System for processing cannabis crop materials
US11751507B1 (en) 2019-10-31 2023-09-12 Hemp Processing Solutions, LLC Crop harvesting system with plant stripping apparatus
US11826762B1 (en) 2019-12-11 2023-11-28 Pearson Incorporated Grinding roll improvements
CN112892685A (zh) * 2021-03-08 2021-06-04 南召县长和实业有限公司 一种钙粉生产用筛分装置

Also Published As

Publication number Publication date
GB1401415A (en) 1975-07-16
IT1007568B (it) 1976-10-30
DE2462414A1 (de) 1977-02-03
NL178753C (nl) 1986-05-16
DE2403351C3 (de) 1980-06-12
DE2403351A1 (de) 1974-09-05
DD110435A5 (en, 2012) 1974-12-20
NL7400344A (en, 2012) 1974-07-26
ES422379A1 (es) 1976-06-16
FR2214526B1 (en, 2012) 1976-11-26
FR2214526A1 (en, 2012) 1974-08-19
NL178753B (nl) 1985-12-16
DE2403351B2 (de) 1979-09-27
CS170155B2 (en, 2012) 1976-08-27
JPS49104381A (en, 2012) 1974-10-02
JPS5513782B2 (en, 2012) 1980-04-11
CA1016923A (en) 1977-09-06
SU572183A3 (ru) 1977-09-05

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