WO1994019108A1 - Dispositif rotatif pour emietter de petits blocs - Google Patents

Dispositif rotatif pour emietter de petits blocs Download PDF

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Publication number
WO1994019108A1
WO1994019108A1 PCT/US1993/001555 US9301555W WO9419108A1 WO 1994019108 A1 WO1994019108 A1 WO 1994019108A1 US 9301555 W US9301555 W US 9301555W WO 9419108 A1 WO9419108 A1 WO 9419108A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
wall
stator
edge
rotary grinding
Prior art date
Application number
PCT/US1993/001555
Other languages
English (en)
Inventor
Al Kaczmarek
Original Assignee
Al Kaczmarek
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 Al Kaczmarek filed Critical Al Kaczmarek
Priority to PCT/US1993/001555 priority Critical patent/WO1994019108A1/fr
Priority to AU37753/93A priority patent/AU3775393A/en
Priority to CA002114309A priority patent/CA2114309A1/fr
Priority to AU54958/94A priority patent/AU5495894A/en
Priority to EP94300976A priority patent/EP0611600A3/fr
Priority to JP6043296A priority patent/JPH06315647A/ja
Publication of WO1994019108A1 publication Critical patent/WO1994019108A1/fr

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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
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/144—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with axially elongated knives
    • 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
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof
    • B02C18/186—Axially elongated knives
    • 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
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165—Screen denying egress of oversize material

Definitions

  • 3,960,334 relates to a size reduction apparatus having cutting means dispo.sed laterally on a plurality of rotor plates and cooperating bed knives.
  • the design for the cutting means disposed laterally on a plurality of rotor plates and plates are disclosed respectively in U.S. Patent Nos. 4,106,708 and 4,206,882.
  • U.S. Patent No. 4,171,778, discloses the granulator rotor comprising a longitudinally oriented shaft having at least a plurality of longitudinally spaced plates that have a plurality of corners, said plates extending radially outwardly from said shaft .so as to define a plurality of open box-like material receiving pockets.
  • FIG. 3 is an exploded perspective view of the cylindrically walled rotary grinding drum of the present invention with its shaft components, elongated cutting assembly and cover plates disengaged;
  • FIG. 4 is a horizontal sectional top plan view of a preferred embodiment of the present invention taken of the lower section of the split stator casing with the cylindrically walled rotary grinding drum disposed therein;
  • FIG. 5 is a partial side elevation view of a preferred embodiment of the present invention showing the detail of the manual adjustment for the hopper feeder;
  • FIG. 6 is an exploded perspective view of a preferred embodiment of the present invention with the cylindrically walled rotary grinding drum removed and with the upper and lower .sections of the split stator casing exploded for greater detail;
  • FIG. 7 is a top plan view of a preferred embodiment of the present invention of a stator cutting assembly
  • FIG. 9 is an enlarged side elevation view taken generally along 9-9 of the drum cutting assembly of Fig. 10 showing the detail of the upper and lower .sections of the drum elongated holder means and a cutting tooth and a retaining pin;
  • FIG. 10 is a top plan view of a preferred embodiment of the present invention of a drum cutting assembly;
  • FIG. 11 is a front elevation view of a preferred embodiment of the present invention of a drum cutting assembly showing the bore for the rataining pin positioned in the upper section of the drum elongated holder means;
  • FIG. 12 is a block diagram of an arrangement of the present invention, together with associated control devices, which are preferred embodiment of the present invention.
  • FIG. 13 is a perspective view of a preferred embodiment of a cutting tooth of the present invention.
  • FIG. 14 is the top plan view of the preferred embodiment of a cutting tooth shown in Fig. 13 of the present invention.
  • FIG. 15 is a perspective view of a second preferred embodiment of a cutting tooth for the present invention
  • FIG. 16 is the top plan view of the second preferred embodiment of the cutting tooth shown in Fig. 15 for the present invention
  • Each of the drum cutting teeth 9 engaged to the drum elongated holder means 3 disposed along the peripheral surface of the cylindrically walled rotary grinding drum 72 is arranged and adapted to expose a drum cutting tip portion 9a (see FIG. 8) thereof from the outwardly disposed face of said drum elongated holder means 3, where each of said drum cutting tip portions 9a extending radially beyond the peripheral surface of the cylindrical grinding drum.
  • Drive means for rotating the cylindrically walled rotary grinding drum 72 are provided.
  • At least one of the drum elongated holder means 3 disposed along the peripheral surface of the cylindrically walled rotary grinding drum 72 is helically shaped.
  • the elongated rotary feeder 52 is disposed in a bottom portion of the material feed hopper 8 and it has an externally disposed variable speed motor, the feeder motor 40, connected to it on its own support base 42 and interconnected by belt drive means 44 connected to an external drive wheel 46, as shown in FIG. 2.
  • a variable speed motor, the grinder motor 35 generally rated from 40 to 100 horsepower for a one ton per hour capacity device, and having a shaft mounted motor drive wheel 33 provides the drive means for rotating the cylindrically walled rotary grinding drum 72 further comprising a suitably sized drive wheel 38, having a centrally located axial bore 75 suitably sized to fit the drive end of the shaft 74 with an offset key way 142 extending axially along a surface of said bore 75, positioned on the drive end of the shaft 74, and a suitably sized and adapted key 73 positioned therein keying said drive wheel thereto.
  • the respective drive wheels, 38 and 33 are suitably sized and adapted ro that the cylindrically walled rotary grinding drum 72 can rotate between 50 and 350 rpm, depending on the work material size and capacity. High efficiency is obtained operating at 120 rpm.
  • the motor 35 rotating the grinding drum 72 is contained in a housing 32 and uses a belt drive 36 connected from the drive motor shaft wheel 33 to the drive wheel 38 for the cylindrically walled grinding drum 72.
  • the cylindrically walled grinding drum 72 generally rotates clockwise and has in its peripheral surface a plurality of drum cutting assemblies 1 comprising drum elongated holder means 3 having drum cutting teeth 9 extending beyond the peripheral surface of said drum 72.
  • a preferred embodiment of the comminuting device comprises a manual override to reverse the normal rotation of the cylindrically walled rotary grinding drum 72.
  • the controller when activated supplies power to the grinder, that is, the variable speed motor 35 that provides the drive means for rotating the cylindrically walled rotary grinding drum 72. Once the rotor reaches full speed, the circuit is energized and the feeder motor 40 is likewise activated.
  • both the feeder motor 40 and the grinder motor 35 may be shut down.
  • a load monitor for the motor 35 driving the cylindrically walled rotary grinding drum 72 is provided which adjusts the power supplied to the motor 40 for the rotary feeder 52 to coordinate work material throughput and reduce jamming.
  • Rotary airlock control referenced in FIG. 12 of the drawing, substantially adjust the inlet air dampers 22 and the lower air inlet 60 having an air inlet gate 61 to accommodate the varying coarseness and comminuting rate of the work material.
  • the stator further comprises a means for obstructing the flow of work material and process air 70, as shown in FIG. 2, said means are protruding from an inner wall section (54 and 57; and 25 and 26, respectively) towards said cylindrically walled rotary grinding drum 72.
  • the means for obstructing the flow of work material and process air comprises a means for cutting.
  • the means for cutting comprises at least one stator cutting assembly (66, 68 and 70) disposed generally along the peripheral surface of an inner wall section (54 and 57; and 25 and 26, respectively) of the stator.
  • the stator cutting assembly 100 has a stationary elongated holder means
  • stator cutting teeth 70 engaged longitudinally to said stationary elongated holder means.
  • Each stationary elongated holder means (66 and 68) disposed along the inner wall section is arranged and adapted to have a face (66a and 68a, respectively) thereof form a portion of the peripheral surface of the inner wall section. (See Fig. 8.)
  • a preferred embodiment of the present invention comprises each stationary elongated holder means disposed along the inner wall section being parallel to the axis of the cylindrically walled rotary grinding drum. Moreover, in the preferred embodiment of the invention shown in the drawing, the axis of the cylindrically walled rotary grinding drum 72 is generally horizontal.
  • Each of these sections has a generally a parallel congruent bottom wall (66b and 68b, respectively) and a plurality of concentric vertical boreholes 67a suitably sized and adapted to accept a securing member, such as a threaded section mating bolt 67, with said upper section 66 having a bore 67a suitably sized to allow a head of bolt 67 to be recessed therein and with the lower section of said bore 67a having an internally threaded bore suitably sized and adapted to engage the threads of the bolt 67.
  • the respective upper and lower sections of the stationary elongated split holder casing (66 and 68) can be mated together to form the stationary elongated holder means.
  • the upper section 66 thereof in the preferred embodiment of the invention as shown in FIG. 8, further comprising a prism having a bottom wall 66b, two parallel congruent end walls 66c, each having a bottom edge, two side edges, a top edge and a side diagonal edge, a rear wall 66d, a top wall 66e and a top diagonal wall 66a, said top diagonal wall 66a having an upper rear edge, two side edges and a lower front edge, and said bottom wall 66b and said top wall 66e each generally lying in a horizontal plane, .said rear and end walls (66d and 66c, respectively) each extending upwardly from and having their bottom edges connected to the rear and side edges, respectively, of the bottom wall 66b, said rear wall 66d having its side edges connected to the rear side edges, respectively, of the end walls 66c, said top wall 66e having its side edges connected to the top edges of the end walls 66c, respectively, its rear edge to the rear wall 66d, and its front edge to
  • the lower section 68 further comprises a plurality of vertical bores 71a in the recess bottom wall 73b, each suitably sized and adapted to accept a tooth retraining pin 71.
  • the tooth retraining pin 71 is arranged and adapted to position a stator cutting tooth 70 having a central bore (see FIGS. 13-18) suitably sized and adapted to accept .said tooth retraining pin 71 to expo.se its stator cutting tip portion 70a from the outwardly disposed face of said stationary drum elongated holder means.
  • An alternative embodiment is contemplated having the bores for the retaining pins positioned in the respective upper sections of the elongated holder means.
  • each stator cutting tooth 70 has an upwardly extending dimension of a side wall not exceeding the upwardly extending dimension of the recess rear wall 73 of the stationary elongated split holder casing.
  • each of the drum cutting assembly 1 comprises drum elongated holder means having a drum elongated split holder casing with an upper and a lower section (5 and 7, respectively) mateable along a generally horizontal plane.
  • Each such section has a generally a parallel congruent bottom wall (5b and 7b, respectively) and a plurality of transverse concentric boreholes 116a suitably sized and adapted to accept a securing member, such as a threaded section mating bolt 116, with said upper section 5 having a bore suitably sized to allow a bolt head to be recessed therein and with said lower section 7 having an internally threaded bore suitably sized and adapted to engage the threads thereof.
  • a securing member such as a threaded section mating bolt 116
  • the lower section 7 thereof has a longitudinal recess 13a positioned along the upper front corner thereof suitably sized and adapted for positioning the drum cutting teeth 9 therein, and further comprising a bottom wall 7b, two parallel end walls 7c, each having a bottom edge, a rear side edge, a front side edge, a top edge, a recess side edge and a recess bottom edge, a rear wall 7d, a front wall 11, a top wall 7e, a recess bottom wall 13b and a recess rear wall 13.
  • the bottom wall 7b, recess bottom wall 13b and top wall 7e each lie generally horizontal plane, said rear, front and end walls (7d, 11 and 7c, respectively) each extending upwardly from and having their bottom edges connected to the rear, front and side edges, respectively, of the bottom wall 7b, said rear wall 7d having its side edges connected to the rear side edges, respectively, of the end walls 7c, said top wall 7e having its side edges connected to the top edges of the end walls 7c, respectively, its rear edge to the upper edge of the rear wall 7d, and its front edge to the upper edge of the recess rear wall 13.
  • the recess rear wall 13 has its lower edge connected to the rear edge of the recess bottom wall 13b and its side edges, respectively, to the recess side edges of the end walls 7c.
  • the recess bottom wall 13b has its front edge connected to the upper edge of the front wall 11, its side edges, respectively, to the recess side edges of the end walls 7c, and the front wall 11 has its side edges connected, respectively, to front side edges of the end walls 7c.
  • the lower section 7 thereof further comprising a plurality of boreholes 115a transverse to the front wall 11 thereof, suitably siz-ed and adapted to accept a drum .securing member, such as a threaded drum bolt 115, each such borehole 115a having a bore suitably sized to allow a bolt head to be recessed therein as the threaded section of said bolt protrudes from the back wall thereof and engages the recess 124 having a radially internally threaded bore 115b to secure a threaded bolt 115 on the annular surface of a supporting disks (73a -
  • a prism having at least three side walls 9b, and two parallel congruent top and bottom walls (9e and 9b, respectively).
  • said bottom wall 9b and said top wall 9e are each oriented to lie in a horizontal plane, each said side wall 9c extending upwardly from and having its bottom edge connected to a side edge, respectively, of the bottom wall 9b; and each side wall 9c having two side edges, each connected to a different side wall 9c, and said top wall 9e having its side edges connected to the top edges of the side walls 9c.
  • At least one of the drum cutting assembly comprises an upper section 5 thereof having a bottom wall 5b and a top wall 5e parallel thereto, two parallel end walls 5c, a rear wall 5d, and a helical ribbon shaped front wall 11.
  • the bottom wall 5b and said top wall 5e each generally lying in a plane oblique to axis 72a of the cylindrically walled rotary grinding drum 72, said rear wall 5d extending transversely upward and said end walls 5c each extending upwardly from and having their bottom edges connected to the rear and side edges, respectively, of the bottom wall 5b, said rear wall 5d having its side edges connected to the rear side edges, respectively, of the end walls 5c, said top wall 5e having its side edges connected to the top edges of the end walls 5c, respectively, its rear edge to the rear wall 5d, and its front edge to the front wall 1 la, .said front wall 1 la further having its lower edge connected to the front edge of the bottom wall 5b and its side edges, respectively, to the side edges of the side edges
  • the lower section 7 thereof having a longitudinal recess 13a positioned along the upper front corner thereof suitably sized and adapted for positioning the drum cutting teeth 9 therein, and further comprising a bottom wall 7b, two parallel end walls 7c, each having a bottom edge, a rear side edge, a front side edge, a top edge, a recess side edge and a recess bottom edge, a rear wall 7d, a helical ribbon shaped front wall 11, a top wall 7e, a recess bottom wall 13b and a recess rear wall 13.
  • the bottom wall 7b, recess bottom wall 13b and top wall 7e each generally lying in a plane oblique to axis 72a of the cylindrically walled rotary grinding drum 72, said rear, front and end walls (7d, 11 and 7c, respectively) each extending upwardly from and having their bottom edges connected to the rear, front and side edges, respectively, of the bottom wall 7b, said rear wall 7d having its side edges connected to the rear side edges, respectively, of the end walls 7c, said top wall 7e having its side edges connected to the top edges of the end walls 7c, respectively, its rear edge to the upper edge of the rear wall 7d, and its front edge to the upper edge of the recess rear wall 12.
  • the recess rear wall 13 having its lower edge connected to the rear edge of the recess bottom wall 13b and its side edges, respectively, to the recess side edges of the end walls 7c.
  • the recess bottom wall 13b having its front edge connected to the upper edge of the front wall 11, its side edges, respectively, to the recess side edges of the end walls 7c, and said front wall 11 having its side edges connected, respectively, to front side edges of the end walls 7c.
  • Each drum cutting tooth 9 having an upwardly extending dimension of a side wall 9c not exceeding the upwardly extending dimension of the recess rear wall 13 of the drum elongated split holder casing 3.
  • each of the cutting teeth (9 and 70, respectively) of the drum cutting assembly 1 and each stator cutting assembly 100 are identically shaped.
  • Each such cutting tooth (9 and 70, respectively) has a distance between the center of its central bore and its cutting tip equal to ⁇ .
  • Each drum cutting tooth 9 and each stator cutting tooth 70 has an upwardly extending dimension of its side wall equal to ⁇ , which is sufficiently less than the upwardly extending dimension of the recess rear wall (13 and 73), respectively, of the drum elongated split holder casing (5 and 7) and the stator elongated split holder casing (66 and 68), to allow rotating movement of each tooth (9 and 70, respectively) about its tooth restraining pin (71) upon impact with work material passing therebetween.
  • the recess rear wall (13 and 73) of the respective elongated split holder casings is arranged and adapted to restrict the rotating movement of each tooth about its tooth restraining pin (71) to an angle not exceeding (45°- Via) in either direction from a plane passing through such restraining pin 71 and transverse to its elongated split holder casing (66 and 68, and 5 and 7, respectively). Since the stator cutting tip portions 70a are arranged in interpolative relation with the drum cutting tip portions 9a as the cylindrically walled rotary grinding drum 72 rotates about its axis a minimum clearance ⁇ between the respective cutting tip positions must be maintained.
  • ⁇ 4 ⁇ sin( 1 / 2 ⁇ ) + oo tan ⁇ + 2 ⁇ + ⁇ , where ⁇ is the angle between a plane passing through the teeth 9 of the drum cutting assembly 1 and the horizontal plane, 6 is the incremental axial expansion between adjacent cutting teeth 9 on the cylindrically walled rotary grinding drum 72.
  • each cutting tooth (9 and 70, respectively) each essentially comprise an equilateral triangle
  • the recess rear wall 13 of the longitudinal recess 13a of the lower section 7 of the drum elongated holder means (5 and 7) has a generally congruent surface to the helical ribbon shaped front wall 11 thereof
  • the recess rear wall 73 of the longitudinal recess 73a of the lower section 68 of the stator elongated holder means (66 and 68) has a generally flat surface parallel the front wall 71 thereof
  • each of the drum cutting teeth 9 in each drum cutting assembly 1 has an angle ⁇ , between the plane passing through the teeth 9 of .said drum cutting assembly 1 and the horizontal plane, exposing a drum cutting tip portion 9a having a top and a bottom wall (9e and 9b, respectively) at an oblique angle ⁇ to the horizontal plane, each of isaid cutting tip portions 9a further comprises a portion of two side walls 9c.
  • a leading edge is comprised of an intersection of each side wall 9c of said cutting tip portion 9a with an edge of the top wall 9e or the bottom wall 9b.
  • An interpolative cutting edge comprises the leading edge on a drum cutting tip portion 9a first entering the plane of the stator cutting teeth 70 in one stationary elongated holder means relative to the other leading edges on said cutting tip portion 9a.
  • Each such interpolative cutting edge cf a drum cutting tip portion 9a is arranged and adapted to interpolatively engage a stator cutting tooth 70 in each of the stationary elongated holder means (66 and 68).
  • Such cutting teeth are fashioned from commercially available materials designed for heavy impact applications for metal forming operations, such as cemented carbide having an industrial designation ISO/G-35, grade WA-96, generally comprised of WC(84) and CO(16); and having a RA Hardness in the range of 85.0 - 90.0, density: 13.9 gms/cc, T.R.S.: 410,000 psi, and 7 - 10 percent abrasion resistance. Standard techniques for surface hardening will further prolong tooth life.
  • FIG. 3 shows an exploded view of the cylindrically walled grinding drum 72 comprising a shaft 74 rotatably and axially journaled in said stator 41, .said shaft 74 having a drive end 74b and a free end 74a.
  • a shaft having an overall length of 42.94 inches has an undiminished diameter of 5.69 inches.
  • each such end extending through an aperture (154a and 155a, respectively) in the stator drive end wall (155b and 155c) and stator free end wall (154b and 154c (not shown)), respectively.
  • FIGS. 1 shows an exploded view of the cylindrically walled grinding drum 72 comprising a shaft 74 rotatably and axially journaled in said stator 41, .said shaft 74 having a drive end 74b and a free end 74a.
  • a shaft having an overall length of 42.94 inches has an undiminished diameter of 5.69 inches.
  • each such end extending through an aperture (154
  • each such end further having a central axially internally threaded bore 74c arranged and adapted to accept a securing member, such as a screw 101, and each such end having a series of step portions of radially increasing diameter commencing at each of its terminal ends.
  • the free end 74a of the shaft 74 has a series of step portions of radially increasing diameter commencing with an externally threaded step portion 74d proximate to the end thereof sized and adapted to accept a threaded bearing locking member 135, proximate thereto the shaft having a journal bearing step portion 74e suitably sized and adapted to accept a bearing 132, and the free end of the shaft has a further step portion 74f proximate thereto suitably sized radially to provide an axial inner shoulder for the bearing 132 and of suitable length axially to permit sufficient clearance between the bearing and an external surface of the stator free end wall (154b and 154c) through which said free end of the shaft extends.
  • each peripheral cover plate 118 of generally uniform thickness suitably sized and adapted to form a portion of the peripheral surface of the cylindrically walled rotary grinding drum 72 not provided by each drum elongated holder means 3 disposed along the peripheral surface thereof, each such peripheral cover plate 118 has a plurality of boreholes 117a arranged and adapted to receive a securing member, such as a flat head screw 117, to secure said peripheral cover plate 118 to the cylindrically walled rotary grinding drum 72.
  • a securing member such as a flat head screw 117
  • Each of the supporting disks (73a - 73n) has a generally annular peripheral surface and at least one recess 124 on said annular surface having a radially internally threaded bore 115b to secure a threaded bolt 115 adapted to engage a longitudinal .section of the drum elongated holder means 3 of the drum cutting assembly 1.
  • the supporting disk 73a proximate to the free end 74a of the shaft 74 and the supporting disk 73n proximate to the drive end 74b of the shaft, comprise the end supporting disks (73a and 73n), each such end supporting disk has a series of step portions of radially varying diameter, each such end supporting disk has an endwardly directed surface 144a connected to an annular step portion 1-44 having a diameter less than the diameter of the cylindrically walled rotary grinding drum 72 and an axial length sufficient to allow process air to pass between said end supporting disk (73a and 73n) and the respective stator end wall(154b and 155b, respectively).
  • a proximate step portion having a peripheral surface (122a and 122n, respectively) of each such end supporting disk (73a and 73n) has a diameter essentially that of the cylindrically walled rotary grinding drum 72, and moving away from the respective shaft ends, a further proximate step portion (126a and 126n, respectively) is provided, having a diameter essentially that of the cylindrically walled rotary grinding drum 72 reduced by the thickness of the peripheral cover plate 118 and having a plurality of boreholes 117b radially arranged in the peripheral surface of .said step portion (126a and 126n) to receive a securing member, such as a flat head screw 117, to secure said peripheral cover plate to the outer supporting disks
  • a securing member such as a flat head screw 117
  • Each supporting disk 73b between the end supporting disks (73a and 73n) has a diameter essenti-ally that of the cylindrically walled rotary grinding drum 72 reduced by the thickness of the peripheral cover plate 118 and each such disk has a plurality of boreholes 117c radially arranged in its generally annular peripheral surface 120 to receive a securing member, such as a flat head screw 117, to secure said peripheral cover plate to the outer supporting disks 73b.
  • FIGS. 6 and 7 show a preferred embodiment of the present invention with the cylindrically walled rotary grinding drum 72 removed and with the upper and lower sections of the split stator casing (24 and 21, respectively).
  • FIGS. 7 is a top plan view of a preferred embodiment of the present invention of a stator cutting assembly 100.
  • the means for housing the cylindrically walled rotary grinding drum comprises a stator drive end wall 155b and a stator free end wall 154b, comprising the stator end walls, each having an aperture (155a and 154a, respectively) and an annular wall dirt ring recess (114a and 127a, respectively) therein arranged coaxially with the cylindrically walled rotary grinding drum 72.
  • the stator having a split stator casing with an upper and a lower section (24 and 21, respectively) mateable along a generally horizontal plane passing through center of the aperture of each stator end walls, and means for attaching the upper section of the stator casing to the lower section thereof.
  • the means for mounting the cylindrically walled rotary grinding drum such that the cylindrically walled rotary grinding drum 72 can rotate in said stator 41 comprises an annular collar (154 and 155, respectively) secured externally to each of the respective stator end walls (154b and 155b, respectively) and arranged coaxially with the aperture (154a and 155a, respectively) therein, and said annular collar having a plurality of internally threated boreholes (154d and 155d (not shown), respectively).
  • Each such annular collar having two substantially identical mating half collars with parallel flanges having at least one mating borehole (155e and 154e (not shown), respectively) arranged therein to receive a .securing member such as a mating nut and bolt 156, each such half collar positioned on a respective upper and lower stator end wall section, and each such half collar arranged and adapted to be joined together as the upper and lower sections of the stator casing are mated together with the means for attaching the upper section of the stator casing to the lower section thereof.
  • a .securing member such as a mating nut and bolt 156
  • the means for mounting the cylindrically walled rotary grinding drum such that the cylindrically walled rotary grinding drum can rotate in said stator further comprises, for each end of the shaft: at least one dirt ring (114 and 127, respectively) arranged and adapted to be mounted in the annular wall dirt ring recess (114a and 127a, respectively) of each one of the stator end walls (154b and 155b, respectively) as shown in FIG. 4.
  • a seal 112 and 129, respectively
  • a bearing seal locking plate 111 and 130, respectively
  • a bearing seal locking plate axially abutting a bearing (to accommodate operational expansion of the shaft, an additional bearing clearance may be provided on the free end bearing of .003")
  • a bearing 109 and 132, respectively
  • a bearing seal 108 and 133, respectively
  • a bearing cover 107 and 134, respectively
  • a plurality of boreholes 107a and 134a, respectively
  • a self-aligning double row roller bearing having a raceway of outer ring spherical rollers guided by a cage and two integral ribs on the inner ring should be available commercially to meet the demanding needs of this invention. Size of the machine, its components, speed of operation, work material, and materials of construction will determine normal operating parameters. For an embodiment allowing a minimum clearance of .003" between interpolated teeth and as otherwise described herein, axial expansion of 2-3 hundredth of an inch can be anticipated.
  • the threaded bearing locking member may have at least one transverse set screw (104 and 136, respectively).
  • the means for mounting the cylindrically walled rotary grinding drum such that the cylindrically walled rotary grinding drum can rotate in .said stator further comprises a shaft end cap (102 and 137, respectively) and a threaded screw (101 and 141, respectively) positioned in the central axially internally threaded bore 74c in the end of each end of the shaft 74.
  • the threaded screw secures said shaft end cap which secures said the threaded lock washer which secures the bearing axially and the plurality of bearing cover .
  • securing bolts secure the bearing cover to the annular collar to secure the bearing radially which in combination secures the shaft radially and axially.
  • FIG. 6 shows an embodiment of the inner wall section of stator 41 further comprises at least one elongated foraminated screen 150 forming a semi ⁇ circular ring sector generally positioned below and concentric with said cylindrically walled rotary grinding drum 72.
  • Each of the elongated foraminated screens 150 have generally horizontally disposed flanges 151 extending from the longitudinal ends thereof.
  • Each said horizontally disposed flange 151 is arranged and adapted to be secured to the means for housing the cylindrically walled rotary grinding drum casing, i.e., the stator 41.
  • the means for housing the cylindric-ally walled rotary grinding drum further comprises a curved screen access door 30 generally with curved lateral ends positioned generally concentrically with and below the elongated foraminated screen 150 and having its lateral ends in engaging contact with the means for housing the cylindrically walled rotary grinding drum when said door is in a closed position.
  • the screen access door 30 is hingedly connected to and having a horizontal hinge 58 and a means to secure said screen access door 30, such as a pivotal bolt 28. As shown in FIG.
  • the .screen access door operating between a raised position 30 during operation wherein said means to .secure .said screen access door is employed and said door is closed, and a lowered position 30' for access to the elongated foraminated screen.
  • the screen door 30 further has a passageway 30a positioned below and in communication with the screen 150 through which comminuted work material may pass.
  • the means for allowing work material and process air into and out of a region between the cylindrically grinding drum and said stator further comprises: an elongated opening 22 positioned in the means for housing the cylindrically walled rotary grinding drum parallel to the axis of the cylindrically walled rotary grinding drum 72; and a discharge duct 10 mountingly disposed below and in communication with the passageway 30a of the screen door 150; an air control damper 22 in the means for housing the cylindrically walled rotary grinding drum having an elongated opening and an adjustable cover plate to regulate the inflow of process air.
  • the process air may be controlled by automatic dampers connected to a controller in another embodiment of the invention.
  • FIG. 5 shows a partial side elevation view of a preferred embodiment of the present invention showing the detail of a means to manually adjustment the position of the hopper feeder so that it may be re-positioned for various sizes of work material.

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  • Crushing And Pulverization Processes (AREA)

Abstract

Cette invention concerne un dispositif de broyage qui émiette de petits blocs de matériaux (50) tels que des morceaux de pneumatiques. Ce dispositifs est conçu pour fonctionner à vitesse lente, c'est-à-dire à 50-350 tours/min, le matériau traité se déplaçant sur la surface périphérique externe d'un tambour rotatif (172). On produit moins de chaleur perdue, on crée moins de distorsions et l'efficacité du cisaillement est améliorée. Cette invention originale prévoit des dents de cisaillement (9, 10) sur le stator et le tambour, qui peuvent chacun effectuer un mouvement de rotation limité, ce qui assure une efficacité du cisaillement pour couper des matériaux composites tels que des pneumatiques en caoutchouc contenant de l'acier et de la corde. Les lames de cisaillement peuvent être tournées trois fois pour exposer des bords de coupe neufs avant qu'il faille les remplacer.
PCT/US1993/001555 1993-02-19 1993-02-19 Dispositif rotatif pour emietter de petits blocs WO1994019108A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/US1993/001555 WO1994019108A1 (fr) 1993-02-19 1993-02-19 Dispositif rotatif pour emietter de petits blocs
AU37753/93A AU3775393A (en) 1993-02-19 1993-02-19 Rotary comminuting device for small chunks
CA002114309A CA2114309A1 (fr) 1993-02-19 1994-01-26 Dispositif rotatif de fragmentation
AU54958/94A AU5495894A (en) 1993-02-19 1994-02-07 Rotary comminuting device for small chunks
EP94300976A EP0611600A3 (fr) 1993-02-19 1994-02-10 Dispositif de brayage rotatif pour petits blocs.
JP6043296A JPH06315647A (ja) 1993-02-19 1994-02-18 小さな塊のための回転式粉砕機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1993/001555 WO1994019108A1 (fr) 1993-02-19 1993-02-19 Dispositif rotatif pour emietter de petits blocs

Publications (1)

Publication Number Publication Date
WO1994019108A1 true WO1994019108A1 (fr) 1994-09-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/001555 WO1994019108A1 (fr) 1993-02-19 1993-02-19 Dispositif rotatif pour emietter de petits blocs

Country Status (2)

Country Link
AU (1) AU3775393A (fr)
WO (1) WO1994019108A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019219140A3 (fr) * 2018-05-14 2020-01-09 Siccadania A/S Appareil du type râpe pour aliments

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750123A (en) * 1956-06-12 keiper
US4205794A (en) * 1978-09-18 1980-06-03 Horton Jack E Destructive device
US4546929A (en) * 1982-06-04 1985-10-15 Fritsch Rudolf P Rotary cutting tool, particularly for comminuting plastic material
US4561156A (en) * 1983-06-09 1985-12-31 Sun Ting Zui Roller for sugar cane squeezing mills
US4871118A (en) * 1988-11-02 1989-10-03 Simplicity Engineering, Inc. Machine for densifying plastic containers and the like
US4896836A (en) * 1988-12-30 1990-01-30 Sprout-Bauer, Inc. Rotary feeder wth metal removing means
US5195685A (en) * 1991-10-07 1993-03-23 Mediclean Technology, Inc. Granulator for waste material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2750123A (en) * 1956-06-12 keiper
US4205794A (en) * 1978-09-18 1980-06-03 Horton Jack E Destructive device
US4546929A (en) * 1982-06-04 1985-10-15 Fritsch Rudolf P Rotary cutting tool, particularly for comminuting plastic material
US4561156A (en) * 1983-06-09 1985-12-31 Sun Ting Zui Roller for sugar cane squeezing mills
US4871118A (en) * 1988-11-02 1989-10-03 Simplicity Engineering, Inc. Machine for densifying plastic containers and the like
US4896836A (en) * 1988-12-30 1990-01-30 Sprout-Bauer, Inc. Rotary feeder wth metal removing means
US5195685A (en) * 1991-10-07 1993-03-23 Mediclean Technology, Inc. Granulator for waste material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019219140A3 (fr) * 2018-05-14 2020-01-09 Siccadania A/S Appareil du type râpe pour aliments

Also Published As

Publication number Publication date
AU3775393A (en) 1994-09-14

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