US3584801A - Hammer-operated rotary waste crushers - Google Patents

Hammer-operated rotary waste crushers Download PDF

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Publication number
US3584801A
US3584801A US712981A US3584801DA US3584801A US 3584801 A US3584801 A US 3584801A US 712981 A US712981 A US 712981A US 3584801D A US3584801D A US 3584801DA US 3584801 A US3584801 A US 3584801A
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United States
Prior art keywords
rotors
pairs
crusher according
walls
crusher
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Expired - Lifetime
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US712981A
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English (en)
Inventor
Andre F Fourcade
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Individual
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Individual
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Publication date
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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0084—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating garbage, waste or sewage

Definitions

  • All known crushers include a plurality of movable hammers carried by rotors and a plurality of anvil-forming stationary hammers or counterhammers; the outlet of the apparatus is therefore closed by a grate the larger particles being recycled so that they may be comminuted to the desired size.
  • a primary object of the present invention consists in providing a crusher of the hammer type including no grate, so as to cut out the drawbacks of the latter.
  • a further object of the invention consists in providing an abrading crusher wherein the products to be crushed are crushed not'only as well known in the art through operation of the hammers and counterhammers on the products to be crushed, but also under the action of the impact of the particles of the products against one another.
  • a third object of the invention consists in supplying a crusher constituted by a vertical piling up of a number of identical and consequently interchangeable elements.
  • a fourth object of the invention consists in providing a crusher constituted by a number of identical elementary channels adapted to operate independently of one another so asto make the assembled crusher suit the product to be treated.
  • my improved crusher comprises a vertical channel of a rectangular cross section constituted by a plurality of oblique sections the slopes of which face alternatingly opposite directions, said channel carrying in each plane joining two superposed oblique elements the parallel shafts of a series of rotors carrying crushing hammers.
  • FIG. I is an elevational partly sectional view of an embodiment of my invention, the section line being shown at I-I in FIG. 2.
  • FIG. 2 is a plan view in cross section through line II-Il of FIG. 1.
  • FIG. 3a shows a plate having a smooth surface.
  • FIG. 3b shows a plate having an uneven surface such as from a checkerwork of grooves.
  • FIG. 3c shows a plate having bars.
  • FIG. 3d shows a serrated plate
  • FIG. 4 shows a hammer
  • FIG. 5 is a plan view of an alternate embodiment wherein the channels have a decreasing cross section.
  • the crusher comprises a channel of a rectangular cross section constituted by a plurality of elementary superposed sections or channels l,2,3,4.
  • said elementary channels are vertical, whereas their front and rear walls 7 and 8 are oblique. Said elementary channels are stacked over one another, the slopes of said oblique walls facing alternatingly opposite directions from one tier to the next, the walls designated by 7 facing one direction and those designated by 8 the opposite direction. In the example illustrated, said elementary channels are all identical, so as to be readily interchangeable.
  • the oblique walls 7 and 8 facing opposite directions include lateral extensions, as shown at 70, 7b, 8a, 8b in FIG. 2, which extensions act as counterhammers. They may be, according to the products to be crushed, smooth or provided with uneven surfaces (see FIGS. 3a, 3b and 3d) and they may even carry transverse bars (see FIG. 3c).
  • the locations of the shafts 10 carrying said rotors are defined in a manner such that the rotors lie in staggered relationship; in other words, the axes of the shafts 10 of the pair of rotors carried in one horizontal plane lie in a medial vertical plane at equal distances from the shafts 10 carrying the rotors of the pairs of rotors which are carried just above and un demeath the rotors considered.
  • each tier includes two rotors but obviously a larger number may be provided and in such a case it is essential for them to be arranged again in staggered relationship.
  • the relative size of the rotors 9 with reference to the sections 1, 2, 3, 4 are such that the gap A between two rotors in the same tier is substantially equal to the gap B separating the rotor in two different successive tiers.
  • the two rotors 9 carried across the plane separating elementary channels such as l and 2 are fitted in a manner such that the left-hand rotor may be almost tangent to the walls of the angle formed by the dihedral defined by said wall 8 of the elementary channel I and the wall 7 of the elementary channel 2, whereas the other or right-hand rotor lies at a greater distance from the apex of the angle formed by the dihedral defined by the wall 7 of the elementary channel I and the wall 8 of the elementary channel 2.
  • the products to be crushed are introduced into the upper opening 11 and drop into the uppermost crushing stage or tier including the two rotors 9 the axes of which extend along the plane along which the elementary channels 1 and 2 join each other.
  • the products are comminuted by the hammers (such as illustrated in FIG. 4) and projected violently into the stationa ry impact areas D and E, A small fraction of the very finely subdivided particles passes between the left-hand rotor and the cooperating wall 8, while the major part of said particles drops into the next lower stage through the passage c formed between the right-hand rotor and apex of the corresponding dihedral forming an obtuse angle facing said rotor.
  • a typical hammer comprises an opening 21 across which passes the shaft on which it is mounted.
  • the lower extremity 12 is curvilinear and comprises two lateral points 13 which enable better crushing to occur.
  • the products are then rolled between the successive rotors and furthermore they impinge against one another in the areas designated by A and B which form areas of floating impacts, said particles impinging also against the walls in the areas F, G, H, I, forming stationary impact areas, that is where the particles impinge against the walls, whereas they impinge against each other in the areas A and B.
  • the garbage and like products are subjected to an extremely energetic crushing both by the hammers and counter hammers and by the shocks between the actual particles.
  • the granulometric structure of the crushed particles depends not only on the speed of the rotors and on their spacing but also on their number and it is an easy matter to add further stages to a predetennined crusher or to remove some or, what is much simpler, it is possible to cut out the drive of a desired number of stages without any dismantling.
  • the elementary channels show a decreasing cross section, whereby a better uniformity in size is obtained for the particles of crushed material; however in such a case the different elementary channels are of course no longer interchangeable.
  • a crusher for garbage and waste materials which comprises vertical opposed sidewalls and parallel oblique front and rear walls connected to form an enclosure comprising a plurality of sections which enclosure has an upper and lower opening, the slope of said oblique front and rear walls in any two adjacent sections facing altematingly opposite directions and said front and rear walls forming an angle by the dihedral defined by adjacent oblique walls, a plurality of pairs of rotatable rotors disposed within said enclosure in such a manner that there are gaps between rotors comprising a pair and said pairs being offset from the vertical plane of each adjacent pair, so
  • pairs being disposed so that alternate pairs have one rotor almost tangential to the angle formed by the dihedral defined by adjacent oblique walls while the remaining pairs have one rotor almost tangential to the opposite wall.
  • a crusher according to claim 1 wherein the rotors are disposed on shafts and the axes of the shafts of each pair of rotors in one horizontal plane lie in a medial vertical plane at an equal distance from the shafts of the pairs of rotors just above and below.
  • a crusher according to claim 6 wherein the size of the rotors is such that the gap between rotors which comprise a pair is equal to the gap between the pairs of rotors above and below.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
US712981A 1967-03-24 1968-03-14 Hammer-operated rotary waste crushers Expired - Lifetime US3584801A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR100164A FR1523467A (fr) 1967-03-24 1967-03-24 Perfectionnements aux broyeurs rotatifs

Publications (1)

Publication Number Publication Date
US3584801A true US3584801A (en) 1971-06-15

Family

ID=8627557

Family Applications (1)

Application Number Title Priority Date Filing Date
US712981A Expired - Lifetime US3584801A (en) 1967-03-24 1968-03-14 Hammer-operated rotary waste crushers

Country Status (8)

Country Link
US (1) US3584801A (xx)
BE (1) BE711755A (xx)
CH (1) CH465368A (xx)
DE (1) DE1657117A1 (xx)
ES (1) ES351949A1 (xx)
FR (1) FR1523467A (xx)
GB (1) GB1172805A (xx)
NL (1) NL6804110A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822042A (en) * 1972-01-13 1974-07-02 R Roy Demolition apparatus
CN108636569A (zh) * 2018-04-25 2018-10-12 安徽昆蒙新型建材有限公司 一种空心砖生产用煤矸石粉碎装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2056095C2 (de) * 1970-11-14 1983-03-17 Metallgesellschaft Ag, 6000 Frankfurt Misch- und Auflösungsvorrichtung
FR2508344A1 (fr) * 1981-06-24 1982-12-31 Dufourny Sprl Entr Edmond Broyeur de dechets a taille helicoidale

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1027206A (en) * 1910-01-29 1912-05-21 Willford Mfg Company Feed-mill.
US1218634A (en) * 1915-04-20 1917-03-13 Rowan T F Dodds Roller-mill.
US1867523A (en) * 1930-05-16 1932-07-12 Fred Y Omurei Apparatus for preparing powdered fish
US1988473A (en) * 1931-12-16 1935-01-22 American Eng Co Ltd Hopper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1027206A (en) * 1910-01-29 1912-05-21 Willford Mfg Company Feed-mill.
US1218634A (en) * 1915-04-20 1917-03-13 Rowan T F Dodds Roller-mill.
US1867523A (en) * 1930-05-16 1932-07-12 Fred Y Omurei Apparatus for preparing powdered fish
US1988473A (en) * 1931-12-16 1935-01-22 American Eng Co Ltd Hopper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822042A (en) * 1972-01-13 1974-07-02 R Roy Demolition apparatus
CN108636569A (zh) * 2018-04-25 2018-10-12 安徽昆蒙新型建材有限公司 一种空心砖生产用煤矸石粉碎装置

Also Published As

Publication number Publication date
GB1172805A (en) 1969-12-03
DE1657117A1 (de) 1971-06-03
NL6804110A (xx) 1968-09-25
BE711755A (xx) 1968-07-15
FR1523467A (fr) 1968-05-03
ES351949A1 (es) 1969-07-01
CH465368A (fr) 1968-11-15

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