US2110851A - Impact crusher - Google Patents

Impact crusher Download PDF

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Publication number
US2110851A
US2110851A US710592A US71059234A US2110851A US 2110851 A US2110851 A US 2110851A US 710592 A US710592 A US 710592A US 71059234 A US71059234 A US 71059234A US 2110851 A US2110851 A US 2110851A
Authority
US
United States
Prior art keywords
impact
particles
plate
crushing
members
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
US710592A
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English (en)
Inventor
Edgar B Symons
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.)
Nordberg Manufacturing Co
Original Assignee
Nordberg Manufacturing Co
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 Nordberg Manufacturing Co filed Critical Nordberg Manufacturing Co
Priority to US710591A priority Critical patent/US2110850A/en
Priority to US710592A priority patent/US2110851A/en
Priority to GB3330/35A priority patent/GB451254A/en
Priority to DK52801D priority patent/DK52801C/da
Priority to DEN37745D priority patent/DE681032C/de
Application granted granted Critical
Publication of US2110851A publication Critical patent/US2110851A/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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/30—Rubber elements in mills

Definitions

  • My invention relates to crushing machinery and has for purpose the provision of a new crushing mechanism, operating on a new .principle and effecting a crushing or breaking down of larger .particles to particles of small size with a minimum use o speed and Feffectiveness.
  • Another object is the T provision of a novel impact crusher, whereby material moved along a given course, for example -by gravity, is caused to take a substantially instantaneous change of direction by impact. It may thereafter be arrested or caused to take a second change of direction bya further impact,
  • Figure 2 is a plan view
  • Figure 3' is a vertical section through the im- ,pact portion of thedevice
  • Figure 4 is a horizontal section on the line 4-4 v. of F su e Figure'dis a section on the line 5-5 of-"Flg ure 3;
  • Figure 6 is a section on the line 8-6 0! F18- ure 3.
  • FIG. 1 illustrate generallya device for elevating material, by conveyors or the like, for afree gravital drop. It
  • propulsion 1 of the material into'the impact zone preferably obtained by a freegravital drop
  • the propulsion 1 of the material into'the impact zone may be obtained by other methods or means. of propulsion.
  • FIG.A generally indicates any suitable bin or source of supply of the material to becrushed. This indication is intended to be diagrammatic, and material from 50 delivered to the device without the intermediary or a bin. For purpose of illustration, however,
  • I illustrate thebin A and adischarge chute or spout A with associated forwardly extending 55 side guide walls A.
  • A illustrates any suitable f power and a maximum crushing
  • Like parts are indicated by. like symbolsv another conveyor, mine car or the like might be conveying means for elevating the material to be dropped and crushed.
  • I illustrate it as an endless conveyor passing about a lower pulley A and an upper pulley Afiwhich may if desired be driven through the drive pulley A with its belt 5 *A' extending to any suitable power source. It
  • I may eflect this by any suitable screening along the path of the conveyor A but find a practical solution to be the pro- 5 vision of air inlet and outlet, apertures in the passage B, whereby a blast 'of air may be blown across thepassage, transversely of the path of drop of the material.
  • This blast of air will carry ofl. a substantial proportion of the dust or fines.
  • an inlet passage B outlet passagesZB and air propelling means B where- 'by the fine material may becarried oil.
  • passages are screened as at B" or provided with mesh of such 35 size that the particles desired to be crushed can- 'not escape. The use of this preliminary air cleaning in many circumstances is helpful but the crushing method may be used without it.
  • the passage 3 may be' of such length that the material, if dropped on a fixed surface or anvil, would be moving fast enough to be crushed by the impact of its gravity accelerated drop.
  • the passage B may illustratively beconsidered to be of sufilcientheight to impart to the particles a velocity sufliclent to cause their crushing in response to a stoppage at the end of their fall.
  • the stoppage and change of direction causes a very substantial crushing or reduction in size of the particles and the reducedparticles aredirected in a stream against the second impact member (3*, where they receive a second impact, and thus are subjected to two stages of reduction in immediate succession.
  • thehigh gravity spout l'or chute B is an important factor, as it imparts to the falling particles a gravital .speed or acceleration sufiicient to carry substantially all of the falling particles into the path of the impact members E".
  • the height of the chute B is so related to the peripheral spacing of the members E" and to the speed of rotation of the rotor, that all or substantially all of the particles are contacted by a full face impact, which prevents, or reduces to a minimum, the glancing j blows against the upper edge of the impact members E", which would otherwise prevent the substantially instantaneous and complete change of directlon described elsewhere herein and diagram-' matlcally illustrated by the arrows and the stream of particles shown in Figure 3.
  • I provide a housing generally indicated as C, which includes the lb! portion the rear wall 0", the forward wall 0?, and
  • C indicates any suitablelower discharge chute which has an inclined wallC and if desired an intermediate inclined-wall C".
  • the housing C may be fixed upon any'suitable foundation D, as shown in Figure 5, and adjacent the housing are bases or supports D for any suitable bearing systems D in which rotate .the ends D of the shaft D.
  • v D is a drive pulley for the shaft D which may be in communication with any suitable power source.
  • I- illus-' trate for example, in Figure 2, the belt D and the motor D" with its drive pulley It will be understood that the shaft D" may be rotated, at a desirable speed or speeds, by the actuation of the motor D".
  • Rotating with and keyed upon the shaft D is the rotorhub D". Extending around it ish circular flange D connected to it by the web D1 Outwardly extending from the rim D are a pluin relation to the direction of rotation of the rim D or the transverse ribs D and smaller 2,110,851 reduces to a minimum friction or abrasion of the rotor. They may be strengthened by intermediate ribs D which appear in Figures 3 and 6.
  • each plate has, a laterally extending lug E" at each side', which lugs are seated in corresponding slots E in the side plates or rings E.
  • I provide wedges E which slide between the opposed edgesof the side ring E as shown'for example in Figures 3 and 6.
  • a cam or wedge surface]! against which a corresponding face of the wedge E rides, and a tightening bolt or stem E is provided which may be drawn inwardly as by a nut E the pin E". passing through a boss E integral with the flanged)".
  • I may have one or more removable walls, covers or the like. I illustrate for example, in Figure 3, the side wall portion E and top wall portion E, which is hinged as at E for ready removal as indicated in dotted lines.
  • I provide an arcuate supporting wall structure G herein shown as of two angular members G hinged as at G for ready removal, cleaning or the like. It is normally held fixed as by the bolts Gr one end passing through angles G on the housing side wall
  • Thestructure G includes an upper angle C: through which the bolts Ci pass, and which is in connection ,with the frame proper G
  • the impact plates proper (3 of which two are shown, are bolted to the angle or frame members G for ready removability.
  • the contour of the plate is generally arcuate, the purpose being to insure that there will be an immediate and complete stoppage of the material received by the plate and no glancing or angular blow.
  • the speed of the rotor is such that all of the material impacted I is caught by the impact faces proper EL
  • this material owing to the speed of rota tion, is delivered through somewhat varying paths and the impact plates G are' curved so that no matter what angle the material may take in relation to its previous travel down the passageB, it
  • the impact plates define an arc the center of which is the face of the rotor impact plate E when it is aligned verticallywith the passage B. It will be further understood that as one of .the impact plates E" passes beyond the line of drop of the material along the passage B another impact. plate crosses the stream before any of the material can drop far enough to engage thefiange D is actually caught by one of the impact'plates E and is thereby crushed by impact, and the crushed particles are thereby projected against the fixed impact plates Gr for a further crushing and grinding against the plate G and the mass of material on its surface. In other words, one charge of material delivered by an impact plate does not have a chance to drop away from the face of the plate (3 before the next charge engages it.
  • I may employ the endless conveyor H passing about the lower pulley H and the upper pulley H It may be driven for example from the motor H through the belt H and the drive pulley H pinion H and the gear H".
  • the material delivered from the crusher in the form of the device shown in Figures 1 and 2, is picked up by the belt H and carlied to a distribution member 1-! whence by chutes H H it may be delivered to screens H H".
  • the oversize from these screens is delivered by discharge chutes H H to the up-conveyor A.
  • the screened material may be delivered to a different conveyor H and thus escape from the crushing circuit.
  • my apparatus has forpurpose to break by impact, particles which are directed or fall into the impact zone, thereby causing the substantially instantaneous stoppage and change of direction of each' particle. In the em' stantaneous stoppage or change of direction of each particle.
  • the impact members iii are rotated across the path of falling particles and direct them againstthe impact plate G. Their speed of movement is sufiicient to effect a further reduction or breakage at that point.
  • the plate (3' is curved because they path of movement of the impact directed material from the member E varies in angle as the impact member moves through the falling stream. All-the material engages the impact plate G directly, and with no sliding or angling. This beingtrue of the engagement of the particles against E as well as G, abras. Jn or wear of the plate is reduced to .a minimum.-
  • the rotation of the shaft D is at such a rate that none of the falling, articles can fall through the ring defined. by the otation of the members E without being/impacted by one of them. None or the particles can drop down onto the portion D of the rotor. Furthermore, the successiveincrements to particles delivered against the plate (1 may come so rapidly as to build up a species of sheet or mat of material.
  • an impact crusher a housing, a rotor mounted in said housing for rotation about a generally horizontal axis, said rotor including a plurality of peripherally spaced impact members, means for feeding an unconsolidated stream of particles to be crushed downwardly by gravity,

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
US710592A 1934-02-10 1934-02-10 Impact crusher Expired - Lifetime US2110851A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US710591A US2110850A (en) 1934-02-10 1934-02-10 Crushing method
US710592A US2110851A (en) 1934-02-10 1934-02-10 Impact crusher
GB3330/35A GB451254A (en) 1934-02-10 1935-02-01 Improvements in or relating to impact crushers, and methods of crushing
DK52801D DK52801C (da) 1934-02-10 1935-02-09 Fremgangsmaade og Stødknuser til Knusning af Materialer.
DEN37745D DE681032C (de) 1934-02-10 1935-02-10 Verfahren und Vorrichtung zum Zerkleinern von Stoffen durch Schlagwirkung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US710591A US2110850A (en) 1934-02-10 1934-02-10 Crushing method
US710592A US2110851A (en) 1934-02-10 1934-02-10 Impact crusher

Publications (1)

Publication Number Publication Date
US2110851A true US2110851A (en) 1938-03-08

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US710592A Expired - Lifetime US2110851A (en) 1934-02-10 1934-02-10 Impact crusher
US710591A Expired - Lifetime US2110850A (en) 1934-02-10 1934-02-10 Crushing method

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Application Number Title Priority Date Filing Date
US710591A Expired - Lifetime US2110850A (en) 1934-02-10 1934-02-10 Crushing method

Country Status (4)

Country Link
US (2) US2110851A (da)
DE (1) DE681032C (da)
DK (1) DK52801C (da)
GB (1) GB451254A (da)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468321A (en) * 1945-03-15 1949-04-26 Bland John Method of and apparatus for simultaneous impact crushing of separate streams of sized rock
US2515165A (en) * 1945-05-18 1950-07-11 Swift & Co Conveying and rasping equipment for lumpy material such as superphosphate and the like
US2593326A (en) * 1949-07-22 1952-04-15 James I Mcaskill Process for conditioning and granulating finely divided materials
US2631504A (en) * 1948-07-07 1953-03-17 Arpin Rotary refiner
US2758360A (en) * 1950-10-19 1956-08-14 Albert Pavlik Method of and apparatus for producing steel shot and the like
US2818985A (en) * 1951-01-06 1958-01-07 Nat Tea Packing Company Inc Apparatus for reclaiming contents of filled envelope packages
US2971703A (en) * 1958-06-04 1961-02-14 Frank E Rath Process for cleaning and recovering scrap metal from slag and the like
US3003708A (en) * 1960-04-15 1961-10-10 United States Steel Corp Impact crusher
CN115837720A (zh) * 2022-11-01 2023-03-24 付茂林 一种复合塑料颗粒制备工艺

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585943A (en) * 1943-03-01 1952-02-19 Harriet F Derrick Impact rotor for stone breakers
US2458617A (en) * 1943-03-10 1949-01-11 Kenneth E Mcconnaughay Drier
US2501622A (en) * 1944-09-07 1950-03-21 Franklin S Smith Plural stage miller with rotary impactors and rotary screens
DE943389C (de) * 1949-10-09 1956-05-17 Arno Andreas Prallmuehle fuer Massengut aller Art
DE1063883B (de) * 1956-07-26 1959-08-20 Hazemag Hartzerkleinerung Schleuderprallmuehle
DE1021691B (de) * 1956-09-10 1957-12-27 Hazemag Hartzerkleinerung Verfahren zum Aufarbeiten von Akkumulatorenschrott und Vorrichtung zur Durchfuehrungdieses Verfahrens
US2962229A (en) * 1958-10-20 1960-11-29 John F Meissner Material crushing and grinding means and method
US4592516A (en) * 1983-08-03 1986-06-03 Quadracast, Inc. Coal breaker and sorter
DE4210809C2 (de) * 1992-04-01 1994-11-17 Orenstein & Koppel Ag Zerkleinerungsmaschine, insbesondere Prallbrecher, und Verfahren zum Wechseln der Prallelemente und / oder Prallkörper
US20100001110A1 (en) * 2008-07-03 2010-01-07 Imperial Technologies, Inc. Material breaker
US12392487B2 (en) * 2019-07-01 2025-08-19 United Conveyor Llc System and mechanism for bottom ash feed regulation to a low capacity conveyor
US20210002089A1 (en) * 2019-07-01 2021-01-07 Daniel Charhut System and mechanism for bottom ash feed regulation to a low capacity conveyor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468321A (en) * 1945-03-15 1949-04-26 Bland John Method of and apparatus for simultaneous impact crushing of separate streams of sized rock
US2515165A (en) * 1945-05-18 1950-07-11 Swift & Co Conveying and rasping equipment for lumpy material such as superphosphate and the like
US2631504A (en) * 1948-07-07 1953-03-17 Arpin Rotary refiner
US2593326A (en) * 1949-07-22 1952-04-15 James I Mcaskill Process for conditioning and granulating finely divided materials
US2758360A (en) * 1950-10-19 1956-08-14 Albert Pavlik Method of and apparatus for producing steel shot and the like
US2818985A (en) * 1951-01-06 1958-01-07 Nat Tea Packing Company Inc Apparatus for reclaiming contents of filled envelope packages
US2971703A (en) * 1958-06-04 1961-02-14 Frank E Rath Process for cleaning and recovering scrap metal from slag and the like
US3003708A (en) * 1960-04-15 1961-10-10 United States Steel Corp Impact crusher
CN115837720A (zh) * 2022-11-01 2023-03-24 付茂林 一种复合塑料颗粒制备工艺

Also Published As

Publication number Publication date
GB451254A (en) 1936-07-31
US2110850A (en) 1938-03-08
DK52801C (da) 1937-03-08
DE681032C (de) 1939-09-14

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