US3670973A - Crusher - Google Patents

Crusher Download PDF

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Publication number
US3670973A
US3670973A US56279A US3670973DA US3670973A US 3670973 A US3670973 A US 3670973A US 56279 A US56279 A US 56279A US 3670973D A US3670973D A US 3670973DA US 3670973 A US3670973 A US 3670973A
Authority
US
United States
Prior art keywords
drum
crusher
rotor
end wall
wall
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
US56279A
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English (en)
Inventor
Robert Lucas
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.)
Fives Lille Cail
Original Assignee
Fives Lille Cail
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 Fives Lille Cail filed Critical Fives Lille Cail
Application granted granted Critical
Publication of US3670973A publication Critical patent/US3670973A/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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/002—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with rotary cutting or beating elements

Definitions

  • the present invention relates to improvements in crushers wherein a rotor is mounted for rotation about a horizontal axis, a plurality of radially extending crushing elements are on the rotor, and a rotary drum concentrically surrounds the rotor.
  • first bearing for the rotor positioned substantially in the plane of the one drum end wall in an opening in the wall, the one end wall defining inlet opening means for feeding material to be crushed into the interior of the drum and air for evacuating crushed material from the interior of the drum.
  • a fixed support extends to the end wall opening and the first bearing is mounted on the fixed support
  • a second bearing for the rotor is mounted in the other end wall of the drum which is flat.
  • the cylindrical wall of the drum defines outlet opening means for discharging the crushed material and the air.
  • FIG. 1 is a longitudinal section of the crusher
  • FIG. 2 is a partial end view of the crusher, viewing the left end of FIG. 1, half of the figure showing a transverse cross section of the crusher.
  • a rotary drum mounted for rotation about a horizontal axis and concentrically surrounding a rotor 12 disposed coaxially in the interior of the drum.
  • a plurality of radially extending crushing elements illustrated as hammers 40 are mounted on the rotor, the hammers being pivotally supported on axially extending axles 42 which are carried by rotor 12.
  • the rotor consists of shaft 38 to which are keyed a plurality of adjacent discs 36 whose hubs maintain annular guide channels between adjacent discs for guiding the hammers during their pivotal movement about axles 42.
  • the rotary drum 10 has a cylindrical wall 14 of sheet metal which is lined interiorly by protective plates 16 which have axially extending ribs 16a defining axially extending channels 24 therebetween.
  • An annular partition wall 18 divides the interior of the drum into a major crushing chamber and a minor discharge chamber.
  • Regularly spaced outlet openings or ports 20 in the cylindrical drum wall 14 in the discharge chamber open into a fixed hood or casing 22 which surrounds this portion of the drum.
  • the ribs 16 extend only through the crushing chamber of the drum, i.e. up to the partition wall 18.
  • a journal or trunnion 26 of large diameter is welded or otherwise suitably affixed to the cylindrical wall of the drum at one end thereof.
  • the other end of the drum is closed by a bottom or end wall 28 of sheet metal which is similarly welded or otherwise affixed to the cylindrical drum wall.
  • a tubular trunnion or journal 30 is bolted or otherwise suitably affixed to the bottom wall 28.
  • the trunnions 26 and 30 are rotatably mounted on bearings 32 and 34, respectively.
  • rotor shaft 38 One end of rotor shaft 38 is joumaled in bearing 44 which is joumaled in trunnion 30.
  • the other end of the rotor shaft is joumaled in bearing 46 affixed to a fixed gooseneck support 48 which extends to a recess or opening in the one end wall of the drnrn.
  • a sheet metal web 50 affixed to the support 48 closes off the opening in the one end wall of the drum and extends to the trunnion 26.
  • a pair of feed funnels or channels 52, 52 are disposed on respective sides of the fixed support 48 to provide inlet opening means for introducing material to be crushed and evacuating air for the crushed material into the interior of the drum, registering openings in the sheet metal web 50 being provided for these funnels.
  • a pinion 54 is affixed to the tubular trunnion 30 so that the drum may be rotated by a chain drive (not shown) engaging the pinion.
  • the rotor shaft is coupled to a suitable motor means (not shown) for rotation.
  • the bearing 32 may be replaced by rollers supporting the cylindrical drum wall and operated to rotate the drum.
  • the roller bearings may have rubber linings or tires for frictional driving engagement with the cylindrical drum wall.
  • the crusher operates as follows:
  • the drum l0 and rotor 12 are rotated in the same or op posite directions.
  • the material to be cnlshed and the evacuating air are introduced through feed funnels 52.
  • the material In the interior of the drum, the material is lifted by the axial channels 24 and falls back on the rotor 12 which turns at great speed.
  • the material is subjected several times to the impact of the pivoting hammers in the crushing chamber.
  • the material When the material has attained a given degree of comrninution, it is entrained by the evacuating air stream in the interior of the drum and discharged with the air through outlet ports 20 into the hood 22.
  • the dwell time of the material in the drum is controlled by the radius of the annular partition wall 18.
  • the crusher of the present invention also reduces the wear on the hammers because it suppresses the crushing of the material by attrition between the hammers and the grill of conventional hammer mills.
  • therrnic exchange coefficient between the hot evacuating gas supplied to the drum and the material to be crushed is particularly high by virtue of the intense stirring which the channels 24 and the rotor 12 impose upon the material during its treatment in the drum.
  • the bearing 46 of the rotor which is situated near the entrance of the hot gas is lubricated and cooled by circulating oil or an air current suitably introduced into the interior of support 48.
  • the crusher of this invention is particularly useful for crushing and drying products before they are finally milled, thus reducing the power requirements of the final mill.
  • a crusher having a rotor mounted on two axially spaced bearings about a horizontal axis, a plurality of radially extending crushing elements on the rotor, and a rotary drum concentrically surrounding the rotor, the drum consisting of a cylindrical wall and two end walls, one of the end walls defining inlet opening means for feeding material to be crushed into the interior of the drum and air for evacuating crushed material from the interior of the drum, the improvement which comprises:
  • the first bearing being concentric with the trunnion and defining therewith an annular opening of large diameter to form the inlet opening means
  • an annular partition dividing the interior of the drum into a major crushing chamber and a minor discharge chamber, and the cylindrical wall of the drum defining outlet opening means in the discharge chamber for discharging the crushed material and the air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)
US56279A 1969-07-23 1970-07-20 Crusher Expired - Lifetime US3670973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6925038A FR2052149A5 (de) 1969-07-23 1969-07-23

Publications (1)

Publication Number Publication Date
US3670973A true US3670973A (en) 1972-06-20

Family

ID=9037878

Family Applications (1)

Application Number Title Priority Date Filing Date
US56279A Expired - Lifetime US3670973A (en) 1969-07-23 1970-07-20 Crusher

Country Status (10)

Country Link
US (1) US3670973A (de)
BE (1) BE753169A (de)
CH (1) CH515073A (de)
DE (2) DE2034415C3 (de)
DK (1) DK124177C (de)
FR (1) FR2052149A5 (de)
GB (1) GB1289006A (de)
LU (1) LU61372A1 (de)
NL (1) NL7010878A (de)
SE (1) SE356693B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918820A (en) * 1995-12-05 1999-07-06 Mitsubishi Materials Corporation Heat exchanger recycling method and crushing apparatus used for the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806315A1 (de) * 1978-02-15 1979-08-16 Eirich Aufbereitungs- und zerkleinerungswerkzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US427228A (en) * 1890-05-06 Pulverizi no-machine
US440537A (en) * 1890-11-11 Ors to chisholm
US726511A (en) * 1903-01-31 1903-04-28 Charles F Baker Tumbling apparatus.
US1076061A (en) * 1910-03-04 1913-10-21 Quenner Dry Crusher Company Ore-treating machine.
US3537658A (en) * 1968-12-10 1970-11-03 Polysius Gmbh Autogenous airswept mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US427228A (en) * 1890-05-06 Pulverizi no-machine
US440537A (en) * 1890-11-11 Ors to chisholm
US726511A (en) * 1903-01-31 1903-04-28 Charles F Baker Tumbling apparatus.
US1076061A (en) * 1910-03-04 1913-10-21 Quenner Dry Crusher Company Ore-treating machine.
US3537658A (en) * 1968-12-10 1970-11-03 Polysius Gmbh Autogenous airswept mill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918820A (en) * 1995-12-05 1999-07-06 Mitsubishi Materials Corporation Heat exchanger recycling method and crushing apparatus used for the same

Also Published As

Publication number Publication date
GB1289006A (de) 1972-09-13
DE7026103U (de) 1973-09-27
DK124177B (de) 1972-09-25
CH515073A (fr) 1971-11-15
FR2052149A5 (de) 1971-04-09
DE2034415A1 (de) 1971-03-04
SE356693B (de) 1973-06-04
LU61372A1 (de) 1970-09-21
NL7010878A (de) 1971-01-26
DE2034415C3 (de) 1978-12-07
DE2034415B2 (de) 1978-04-06
BE753169A (fr) 1970-12-16
DK124177C (da) 1973-02-12

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