US3758035A - Crusher for tenacious material such as asphalt - Google Patents

Crusher for tenacious material such as asphalt Download PDF

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Publication number
US3758035A
US3758035A US00148813A US3758035DA US3758035A US 3758035 A US3758035 A US 3758035A US 00148813 A US00148813 A US 00148813A US 3758035D A US3758035D A US 3758035DA US 3758035 A US3758035 A US 3758035A
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US
United States
Prior art keywords
casing
crushing
rotary shaft
inlet opening
crusher
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
US00148813A
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English (en)
Inventor
Y Ushiku
H Satoh
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.)
Mitsuboshi Sangyo Co Ltd
Original Assignee
Mitsuboshi Ind
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 Mitsuboshi Ind filed Critical Mitsuboshi Ind
Application granted granted Critical
Publication of US3758035A publication Critical patent/US3758035A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • 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
    • 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
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • ABSTRfCT A crusher for crushing tenacious material, particularly asphalt.
  • a horizontally arranged cylindrical casing has 1 Foreign Application Dim a rotary shaft concentrically mounted therein and at June 20, 1970 Japan 45/53341 least two radial crushing rods are fixed on the rotary shaft at axially spaced locations,
  • the casing includes [52] U.S. Cl 241/73, 241/154, 241/188 R end walls, one of which has an inlet opening at its upper [51] Int. Cl.
  • the crushing rod located adjacent to the 241/186 R, 188 R, 189 R, 191, 1-95, 154, 185 inlet opening has a square cross-sectional shape with its R, 188 A, 189 A opposite side surfaces being parallel to the end wall of the casing, and the remaining crushing rod has a square [56] References Cited cross-sectional shape with its side surfaces being at an UNITED STATES PATENTS angle to the end wall of the casing. 169,698 11/1875 2 Claims, 2 Drawing Figures Ill/IllfI/I PAIEN msm-Hm 3.758.035
  • rotary shaft concentrically mounted in said casing, means for driving said rotary shaft, and at least two radial crushing rods fixedon said rotary shaft at axially spaced locations therealongthe crushing rod located adjacent to the inlet openinghaving a flat surface facing toward said inlet opening and the remaining crushing rod having a sharp edge facing toward the direction of rotation thereof.
  • FIG. l is an elevation view, partly in section, of the crusher according to the present invention.
  • FIG. 2 is a sectional view of the crusher taken along line Il-ll of fllG. vll.
  • FIG. 1 illustrates apreferred embodiment of the present invention which includes a horizontally arranged cylindrical casing Ell including end walls 211 and 22, and a cylindrical wall 23.
  • the end wall 21 has an inlet opening Zia at its upper part to supply the material to be crushed to the casing and the cylindrical wall 23 has perforations T3 at its lower part to discharge the crushed material from within the casing.
  • a rotary shaft 12 is concentrically arranged in said casing 20 and rotatably supported by bearings-Ml and till,
  • a pulley llll is fixedly mounted onions and ofsaid rotary shaft, and said pulley can be drivemby belts and a motor (not shown).
  • It supply hopper l is mounted on the casing and is connected to the inlet opening Ella, and a discharge chute lld is connected to the bottom of the easing W.
  • a drum n is concentrically mounted on said ro-' tary shaft, and a plurality of radial crushing rods 7', d, 9 and 9' are fixed on said rotary shaft at airially spaced locations therealong and project through said drum 6 into a treating zone 5 formed in said casing as.
  • the tenaciousmaterial to be crushed which is supplied into the hopper t passes through a bent supply path d, which has a blade 3 therealong for preventing the material from flying back along said path from the treating zone
  • the material is first struck and crushed by the crushing rod 7, which is positioned at one end of the rotating drum s, and then struck by the next crushing rod 8, which is arranged at the center of the rotating drum 6 diametrically opposite the crushing rod '7.
  • the material is vigorously struck and r0 tated between the inside walls of the treating zone and the crushing rods 9 and 9', which are on the opposite end of the rotating drum n and at right angles to the crushing rods '7 and d.
  • the material is crushed in a few seconds into granules.
  • the crushing rods 7, 8, 9 and 9" are fixed on the rotary shaft 12, which is supported by the bearings 10 and lid, and rotated through the pulley 1 l, and they project into the treating zone 5 through the drum 6.
  • crushed material is discharged through the perforations 113 at the bottom of the treating zone 5 to the outside through the discharge chute 14. It is desirable to keep the space between .the end surfaces of the drum 6 and the inside surfaces of the treating :zone 5 to a minimum.
  • the opening 21a from the supply path 4 to the treating zone 5 is positioned adjacent the crushing rod 7 so that the material strikes against the flat surface of the curshing rod 7 atits lower part.
  • the crushing rod 7 is so arranged that the flat surface thereof faces toward the inside surface of the treating zone 5.
  • the crushing rods 9 and 9' are so arranged that their corners face toward the inside surface of. the treating zone 5.
  • the crushing rods 7, 8, 9 and 9' are at right angles to. each other.
  • the angles may be any angle other than a right angle, if desired. It has been found that it is possible to provide three to eight crushing rods, but it is most preferably to provide four crushing rods for practical use.
  • the'crushing rod 7 is positioned immediately adjacent the opening 21a in the supply path 4', and it is necessary to so position said crushing rod 7 that its flat surface faces the material, and to so position the crushing rods 8, 9 and 9' that their corners face toward the material.
  • the crushing rods are most preferably made so as to have a'square cross-section and a pointed end.
  • the crushing rods have a length such that there is a very small gap between the end thereof and the inside surface of the treating zone 5, in order to prevent the material from sticking to the crushing rods.
  • Thecrushing rods may have other crosssectional shapes, such as polygonal, according to the material to be treated, but the ends of therods must be pointed.
  • the blade 3 in the supply path 4 serves to prevent the material from flying back from the treating zone 5 through the hopper l to the outside owing to the high speecl'of rotation of the crushing. rods, and also serves to aid the crushing action, and therefore the blade is rather important for obtaining the crushing action of this crusher.
  • This crusher is normally operated at the speed of When treating a material having high tenacity, small perforations may cause clogging. in practical use, perforations having a diameter of 10 mm produce good results. lt has been found that pulverizable material can be satisfactorily treated by relatively long crushing rods in a relatively small drum, while hard material having little tenacity can be satisfactorily treated by relatively short crushing rods in a relatively large drum.
  • the material being treated is naturally air-cooled, but a positive cooling device may be provided, if desired, to cool material having a high tenacity.
  • EXAMPLE 1 Pulverizing blown asphalt having a high viscosity with a penetration degree of 20-30 was carried out.
  • the supplied asphalt had been previously divided into particles of about 15cm.
  • a rotating speed of the drum of 900 rpm produced the best results, granules having 40-50 meshes being obtained in 2-3 seconds. This result was obtained with perforations in the casing of 10 mm diameter. With the perforations of 5mm diameter, the continuous operation of the crusher produced clogging, which is not desirable, but intermittent operation produced fine granules of 100-120 mesh size.
  • the granular asphalt thus obtained is a new form of asphalt, which can be advantageously used as asphaltroofing material, and which does not require conventional melting equipment, heating equipment, convey ing tubing, or the like. It can also be used as waterproofing material for building or construction, paving material for roads or floorsealing material or the like.
  • the granular asphalt can be employed in a simple way in a wide field, including ones where conventional asphalt has been used heretofore.
  • EXAMPLE 2 Pulverizing marble, which was chosen as an example of hard material, was carried out.
  • the rotating speed of the drum was set at 1,200 rpm, and granules of about 80-100 mesh size were obtained in about three seconds.
  • the diameter of the perforations in the casing was mm.
  • a good result was also obtained by intermittent operation with perforations of 5 mm in diameter, the apparatus producing fine particles.
  • the product thus obtained can be used as material which is mixed with resinous material to form artificial stone or floor or wall material, which is superior in appearance and durability to similar prior art materials.
  • EXAMPLE 3 A test was carried out on toys or household articles made of plastic material such as hard polyvinyl chloride material. The rotating speed of the drum was set at 750 rpm and granules of 50-60 mesh size were obtained in about three seconds. The diameter of the perforations in the casing was 10 mm. This test was made to crush waste articles into granular form so that the uniformity or the shape of the granules obtained was not of interest. This test was carried out only for the purpose of testing the processing of waste articles made of synthetic resinous material, the amount of which in dust form has recently increased and presented a difficult problem in the processing of the dust.
  • waste material thus crushed can be discarded as it is, without the necessity of burning or pressing, since the crushed material has substantially the same size as sand particles. it may also be used as material which is mixed with asphalt or cement material to produce a colorful pavement, floor or the like.
  • the present invention provides a multi-purpose crushing device which has a very simple construction, and is durable incontinuous operation, and which can effectively crush hard material as well as tenacious material, particularly asphalt.
  • a device for crushing tenacious material comprising a cylindrical casing having a pair of vertical end walls and a horizontal cylindrical wall joining said end walls, one of said end walls having an inlet opening at the upper part thereof for supplying the material to be crushed into said casing and said cylindrical wall having perforations in the lower part thereof for discharging the crushed material from within the casing, a rotary shaft rotatably mounted in said casing at the center thereof, means for driving said rotary shaft, a plurality of radially extending crushing rods attached on said rotary shaft at axially spaced locations along said shaft, one of said crushing rods being located adjacent said inlet opening and having a square cross section with a flat side surface being directed toward the rotating direction thereof, and the remaining of said plurality of crushing rod having a square cross section with a corner being directed toward the rotating direction thereof.
  • each of sai crushing rods has a pointed end.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
US00148813A 1970-06-20 1971-06-01 Crusher for tenacious material such as asphalt Expired - Lifetime US3758035A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5334170A JPS556419B1 (nl) 1970-06-20 1970-06-20

Publications (1)

Publication Number Publication Date
US3758035A true US3758035A (en) 1973-09-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00148813A Expired - Lifetime US3758035A (en) 1970-06-20 1971-06-01 Crusher for tenacious material such as asphalt

Country Status (5)

Country Link
US (1) US3758035A (nl)
JP (1) JPS556419B1 (nl)
DE (1) DE2129925A1 (nl)
GB (1) GB1348314A (nl)
NL (1) NL166629C (nl)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958067A (en) * 1970-06-11 1976-05-18 Mitsuboshi-Sangyo Co., Ltd. Granular asphalts
US3977505A (en) * 1974-06-18 1976-08-31 Powder Couplings Limited Clutches and vibration dampers
US5254385A (en) * 1991-06-03 1993-10-19 Hazlett Darren G Encapsulated asphalt
US6422495B1 (en) 2000-02-25 2002-07-23 Vermeer Manufacturing Company Rotary grinder apparatus and method
US6440205B1 (en) 2000-05-23 2002-08-27 Rock Binders, Inc. Paving binders and manufacturing methods
US20020190148A1 (en) * 2000-02-25 2002-12-19 Keith Roozeboom Rotary grinder apparatus and method
US6824600B2 (en) 2000-05-23 2004-11-30 Shell Canada Limited Paving binders and manufacturing methods
US6863724B2 (en) 2001-08-09 2005-03-08 Shell Canada Limited Sulfur additives for paving binders and manufacturing methods
US9675976B2 (en) 2013-09-10 2017-06-13 Vermeer Manufacturing Company Hammer support for rotary tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038045B4 (de) * 2008-08-16 2011-07-14 Suchy, Martin, 58791 Vorrichtung zur Aufbereitung von Asphaltaufbruch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US140425A (en) * 1873-07-01 Improvement in stamps for crushing ores
US169698A (en) * 1875-11-09 Improvement in hominy-mills
US2540028A (en) * 1949-06-22 1951-01-30 William J Fitzpatrick Method of making cream style corn
US2807424A (en) * 1955-08-01 1957-09-24 Robert B Records Tiltable axis attrition mill with hammer and knife rotor
GB1206923A (en) * 1969-01-18 1970-09-30 Wissenschaftlichtechnisches Ze Improvements in or relating to grinding mills

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US140425A (en) * 1873-07-01 Improvement in stamps for crushing ores
US169698A (en) * 1875-11-09 Improvement in hominy-mills
US2540028A (en) * 1949-06-22 1951-01-30 William J Fitzpatrick Method of making cream style corn
US2807424A (en) * 1955-08-01 1957-09-24 Robert B Records Tiltable axis attrition mill with hammer and knife rotor
GB1206923A (en) * 1969-01-18 1970-09-30 Wissenschaftlichtechnisches Ze Improvements in or relating to grinding mills

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958067A (en) * 1970-06-11 1976-05-18 Mitsuboshi-Sangyo Co., Ltd. Granular asphalts
US3977505A (en) * 1974-06-18 1976-08-31 Powder Couplings Limited Clutches and vibration dampers
US5254385A (en) * 1991-06-03 1993-10-19 Hazlett Darren G Encapsulated asphalt
US6422495B1 (en) 2000-02-25 2002-07-23 Vermeer Manufacturing Company Rotary grinder apparatus and method
US20020190148A1 (en) * 2000-02-25 2002-12-19 Keith Roozeboom Rotary grinder apparatus and method
US6840471B2 (en) 2000-02-25 2005-01-11 Vermeer Manufacturing Company Rotary grinder apparatus and method
US20050035234A1 (en) * 2000-02-25 2005-02-17 Vermeer Manufacturing Company Rotary grinder apparatus and method
US6440205B1 (en) 2000-05-23 2002-08-27 Rock Binders, Inc. Paving binders and manufacturing methods
US6824600B2 (en) 2000-05-23 2004-11-30 Shell Canada Limited Paving binders and manufacturing methods
US6863724B2 (en) 2001-08-09 2005-03-08 Shell Canada Limited Sulfur additives for paving binders and manufacturing methods
USRE44080E1 (en) 2001-08-09 2013-03-19 Shell Oil Company Sulfur additives for paving binders and manufacturing methods
US9675976B2 (en) 2013-09-10 2017-06-13 Vermeer Manufacturing Company Hammer support for rotary tool

Also Published As

Publication number Publication date
GB1348314A (en) 1974-03-13
JPS556419B1 (nl) 1980-02-16
NL166629B (nl) 1981-04-15
NL166629C (nl) 1981-09-15
NL7107068A (nl) 1971-12-22
DE2129925A1 (de) 1972-01-13

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