US3337913A - Granulating device - Google Patents

Granulating device Download PDF

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US3337913A
US3337913A US428808A US42880865A US3337913A US 3337913 A US3337913 A US 3337913A US 428808 A US428808 A US 428808A US 42880865 A US42880865 A US 42880865A US 3337913 A US3337913 A US 3337913A
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cutting
apertured member
worm
granulating device
bores
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US428808A
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List Heinz
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Buss AG
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Buss AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/227—Means for dividing the extruded material into briquets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/20—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/221—Extrusion presses; Dies therefor extrusion dies

Definitions

  • the present invention concerns a granulating device for reducing a mass of material to granular or particulate form, which has a material-working member, more particularly a continuously operating worm co-operating with radial outlet nozzles of the surrounding housing.
  • Granulating devices with worm mechanisms which serve for the mixing, kneading and extruding of plastic substances, especially synthetic materials.
  • the revolving worm works and compresses the product to be granulated in the axial direction through a plate having nozzles, and which is fitted with a rotating knife which cuts the strands of material extruded from the nozzles into granular or particulate form.
  • Many of the newer products cannot be worked without difficulty with such a granulating device as the sticky granulate adheres to the knife and thereby lowers its etficiency.
  • the object of the invention is to provide a granulating device in which the disadvantages cited above are avoided. More particularly, satisfactory working of sticky products in continuous operation is to be obtained wherein the material particles do not adhere, neither to the knife nor to the inner wall of the reception chamber,
  • the granulating device has a material-working apparatus, more particularly a continuously operating worm inside a housing having outlet nozzles. These nozzles, arranged at the oulet end of the worm, are disposed in a hollow body provided with substantially radial bores. Revolving cutting members are provided which contact the outer surface of the hollow body with their cutting edges.
  • the hollow body is preferably of a cylindrical or frustoconical shape.
  • rotating fan blades are associated with the cutting members, which produce a stream of air which additionally accelerates and cools the particles of material which is outwardly centrifuged by the cutting members.
  • a heating medium may be circulated in the bores or electrical heating means may be arranged therein.
  • FIG. 1 is a partly sectional side elevational View of one embodiment of the granulating device according to the invention
  • FIG. la is a partial sectional view illustrating a cylindrical apertured member as a modification of the conical member shown in FIG. 1;
  • FIG. 1b is another partial sectional view showing optional drive means for oscillating the cutting devices together with the bearing case;
  • FIG. 2 is a partly sectional view of the major inner components, taken along line 11-11 of FIG. 1, with the knives and the fan blades interconnected;
  • FIG. 2a is a view similar to that of FIG. 2 but showing a modification wherein the knives are supported for rotation separate from that of the fan blades, also showing a separate support for the latter;
  • FIG. 3 is an end view of the granulating device, taken from the right-hand side of FIG. 1.
  • the illustrated granulating device has a housing 1 in which a material-working member is disposed in the form of a worm 2 capable of continuous operation.
  • the housing 1 is fixed to the floor or ground in a conventionalmanner, eg by the intermediary of a foundation or base 1a, as shown in FIG. 1.
  • a conventional drive is shown at 2a for the worm 2.
  • a plurality of outlet nozzles is arranged at the right-hand end of the housing 1, as viewed in FIG. 1, being constructed as a hollow body of rotation in the form of an outlet support 4 and a conical apertured member 5 (FIG. 1).
  • Stirrup clamps 3 and '3' are provided to secure the outlet nozzle support 4 onto the housing 1.
  • the apertured member may be given a cylindrical shape, as shown at 5 in FIG. 1a while FIG. 1 shows the conical member 5.
  • the conical apertured member 5 is provided with radially aligned apertures 6 to allow passage of the material to be granulated.
  • Longitudinal bores 7 serve to accommodate a heating fluid or medium for the apertured member 5.
  • An extruder 8', forming the extension of a trunnion 8, extends into the interior of the apertured member and has bores 8" which form extensions of the bores 7.
  • the trunnion 8 is flanged to the end flange of the nozzle support 4 (e.g. by way of a number of circumferential bolts).
  • the trunnion 8 is arranged coaxially with the worm 2, and it carries a rotatable bearing case 11 by means of bearings 9 and 10.
  • the feed of the heating medium to bores 7, 8" takes place by means of a pipe 12 attached to the mouth of the bore 7 while a pipe 12 is provided for allowing the heating medium to be discharged therefrom.
  • the heating medium which enters the longitudinal bores 7 through pipe 12 is fed through the bores 8" of the extruder 8 and flows back into the external heating system through further longitudinal bores 7 and pipe 12'.
  • the heating system is not shown in the drawing.
  • electrical heating could be provided by means of electric heating elements disposed in the bores 7, 8.
  • FIG. 1 only shows one system of elements 1315.
  • a reception chamber for the material particles is shown at 20 (see FIGS. 1 to 3).
  • This chamber 20 surrounds the apertured member 5 along with the rotating knives 14 and the fan blades 15. It is suggested to provide lateral rotating walls 16 and 16' attached to the knife arms 13.
  • FIG. 1 the right-hand side of the chamber 20 is shown with releasable or detachable flanged portions, for cleaning and maintenance purposes of the inner mechanism.
  • the bearing case 11 is provided with a bore 18 which connects with corresponding bores 18 in the knife arms 13, these bores terminating in outlet openings or spraying nozzles 19 at the outlets and adjacent the respective fan blades 15.
  • Lateral yokes or brackets attached to the outer walls of the reception chamber 20 (see FIG. 3) hold a stufling box 17 which is thus connected with the conical flange of the nozzle support 4.
  • a liquid or gaseous medium is fed into the stuffing box 17 through an appropriate inlet pipe 18a, thence through the bores 18 of the bearing case, the corresponding bores 18 in the knife arms 13 andto the spraying nozzles 19 adjacent the fan blades 15 so as to form a protective film thereon, as well as on the inner wall of the reception chamber 20, which prevents the material particles from adhering thereto.
  • the medium should conveniently be guided as near as possible to the cutting edges of the knives 14. In this way the affected surface will be extensive and the cooling of the knives improved.
  • a V-belt 21 and a conventional drive 11a are provided to drive the bearing case 11 (FIG. 1) together with the attached cutting devices.
  • An adjustment nut 23 with a lock nut 24 serves as an abutment against this displacement.
  • By adjustment of the nut 23 the play between the knives 14 and the apertured member may be adjusted during operation as desired.
  • nozzles 25 are provided for additionally spraying the inner walls of the reception chamber 20.
  • two diametrically opposed knives 14 are shown, as a matter of example, so that on each revolution of the case 11 each strand of material issuing from the apertures 6 will be out twice. Should only a single cut be required to take place at a similar cutting speed, the knives can be provided such that their length corresponds to only half the length of the outer conical surface line of the apertured member 5 as shown at 14 in the modified partial view of FIG. 1a. On the other hand, it is also possible to provide additional knife arms, for example four or six (not illustrated.)
  • FIG. 2a shows, in an exemplary manner, drive means 15b, in the form of a motor-driven pinion, acting upon a toothed outer rim of the support or crown 15a. The latter may be supported by inner bearings, as shown.
  • FIGS. 2 and 3 show such a fan at 20a, for producing the additional air stream for the material particles.
  • an outlet or discharge 20b has been shown in the drawings for the material particles.
  • a granulating device comprising, in combination, a
  • a material-working apparatus in the form of a rotatable worm having outlet means arranged at the outlet end of said apparatus, said outlet means being in the form of a channeled and apertured member having substantially radial bores for the passage of the material upon rotation of said worm, at least one rotatable cutting member supported substantially coaxially with respect to said apparatus and on the side of said apertured member facing away therefrom, each cutting member having a cutting edge in linear contact with a portion of the outer surface of said apertured member, and at least one rotatable fan blade connectable with a respective cutting member, said cutting members and said fan blades when aligned presenta ing a unitary curved profile tangentially contacting said outer surface of the apertured member.
  • V 5 The granulating device as defined in claim 3, further comprising third drive means for axially oscillating said bearing case and cyclically altering the play between said cutting members and said outer surface of the apertured member.

Description

Aug. 29, 1967 s GRANULATING DEVICE 15 Sheets-Sheet 1 Filed Jan. 28, 1965 ozcZEwA INVENTOR HEiqZ LIST AGENT Aug. 29, 1967 H. LIST 3,337,913
GRANULATING DEVI CE Filed Jan. 28. 1965 5 Sheets$heet INVENTOR 20b HEINZ LIST BY x AGENT Aug. 29, 1967 H. LIST GRANULATING DEVICE 3 Sheets-Sheet 3 Filed Jan. 28, 1965 FIG. 3
INVENTOR HEINZ LIST AGENT United States Patent GRANULATING DEVICE Heinz List, Pratteln, Switzerland, assignor to Buss AG, Basel, Switzerland Filed Jan. 28, 1965, Ser. No. 428,808 Claims priority, application Switzerland, Feb. 1, 1964, 1,201/ 64 9 Claims. (CI. 18-12) The present invention concerns a granulating device for reducing a mass of material to granular or particulate form, which has a material-working member, more particularly a continuously operating worm co-operating with radial outlet nozzles of the surrounding housing.
Granulating devices with worm mechanisms are known which serve for the mixing, kneading and extruding of plastic substances, especially synthetic materials. In these devices the revolving worm works and compresses the product to be granulated in the axial direction through a plate having nozzles, and which is fitted with a rotating knife which cuts the strands of material extruded from the nozzles into granular or particulate form. Many of the newer products cannot be worked without difficulty with such a granulating device as the sticky granulate adheres to the knife and thereby lowers its etficiency.
Furthermore known granulating devices have the additional disadvantage that only a small part of the surface contacted by the knife is utilized and further that the granulate reaches the reception chambers in lumps. Also, the material particles are uneven as a uniform heating of a nozzle plate perforated with axial bores is hardly possible.
The object of the invention is to provide a granulating device in which the disadvantages cited above are avoided. More particularly, satisfactory working of sticky products in continuous operation is to be obtained wherein the material particles do not adhere, neither to the knife nor to the inner wall of the reception chamber,
The granulating device according to the invention has a material-working apparatus, more particularly a continuously operating worm inside a housing having outlet nozzles. These nozzles, arranged at the oulet end of the worm, are disposed in a hollow body provided with substantially radial bores. Revolving cutting members are provided which contact the outer surface of the hollow body with their cutting edges.
The hollow body is preferably of a cylindrical or frustoconical shape.
According to a preferred embodiment, rotating fan blades are associated with the cutting members, which produce a stream of air which additionally accelerates and cools the particles of material which is outwardly centrifuged by the cutting members.
It is further contemplated to provide substantially axial bores in the hollow body, through which uniform heating is obtained. For this purpose a heating medium may be circulated in the bores or electrical heating means may be arranged therein.
An exemplary, preferred embodiment of the invention is shown in the accompanying drawings in which FIG. 1 is a partly sectional side elevational View of one embodiment of the granulating device according to the invention;
FIG. la is a partial sectional view illustrating a cylindrical apertured member as a modification of the conical member shown in FIG. 1; I
FIG. 1b is another partial sectional view showing optional drive means for oscillating the cutting devices together with the bearing case;
FIG. 2 is a partly sectional view of the major inner components, taken along line 11-11 of FIG. 1, with the knives and the fan blades interconnected;
Patented Aug. 29, 1967 FIG. 2a is a view similar to that of FIG. 2 but showing a modification wherein the knives are supported for rotation separate from that of the fan blades, also showing a separate support for the latter; and
FIG. 3 is an end view of the granulating device, taken from the right-hand side of FIG. 1.
The illustrated granulating device has a housing 1 in which a material-working member is disposed in the form of a worm 2 capable of continuous operation. The housing 1 is fixed to the floor or ground in a conventionalmanner, eg by the intermediary of a foundation or base 1a, as shown in FIG. 1. A conventional drive is shown at 2a for the worm 2. A plurality of outlet nozzles is arranged at the right-hand end of the housing 1, as viewed in FIG. 1, being constructed as a hollow body of rotation in the form of an outlet support 4 and a conical apertured member 5 (FIG. 1). Stirrup clamps 3 and '3' are provided to secure the outlet nozzle support 4 onto the housing 1. The apertured member may be given a cylindrical shape, as shown at 5 in FIG. 1a while FIG. 1 shows the conical member 5.
As can be seen from FIG. 1 the conical apertured member 5 is provided with radially aligned apertures 6 to allow passage of the material to be granulated. Longitudinal bores 7 serve to accommodate a heating fluid or medium for the apertured member 5. An extruder 8', forming the extension of a trunnion 8, extends into the interior of the apertured member and has bores 8" which form extensions of the bores 7.
The trunnion 8 is flanged to the end flange of the nozzle support 4 (e.g. by way of a number of circumferential bolts). Thus the trunnion 8 is arranged coaxially with the worm 2, and it carries a rotatable bearing case 11 by means of bearings 9 and 10. The feed of the heating medium to bores 7, 8" takes place by means of a pipe 12 attached to the mouth of the bore 7 while a pipe 12 is provided for allowing the heating medium to be discharged therefrom. The heating medium which enters the longitudinal bores 7 through pipe 12, is fed through the bores 8" of the extruder 8 and flows back into the external heating system through further longitudinal bores 7 and pipe 12'. The heating system is not shown in the drawing.
In place of fluid heating, electrical heating could be provided by means of electric heating elements disposed in the bores 7, 8.
Preferably two cutting devices are provided, including knife arms 13 carried by the bearing case 11, radially disposed and extending in the axial direction, each of the arms 13 carrying a knife 14 and a fan blade 15 (see also FIG. 2). For the sake of clarity, FIG. 1 only shows one system of elements 1315. The knives may be adjustably arranged relative to each other in the axial direction (not shown). The arrangement of the knives 14 is such that during rotation of the bearing case 11 they contact the surface of the radial apertures 6, member 5 in the region =of the apertures thereof.
time cooling and setting of the material particles takes.
place.
A reception chamber for the material particles is shown at 20 (see FIGS. 1 to 3). This chamber 20 surrounds the apertured member 5 along with the rotating knives 14 and the fan blades 15. It is suggested to provide lateral rotating walls 16 and 16' attached to the knife arms 13. In FIG. 1, the right-hand side of the chamber 20 is shown with releasable or detachable flanged portions, for cleaning and maintenance purposes of the inner mechanism.
The bearing case 11 is provided with a bore 18 which connects with corresponding bores 18 in the knife arms 13, these bores terminating in outlet openings or spraying nozzles 19 at the outlets and adjacent the respective fan blades 15. Lateral yokes or brackets attached to the outer walls of the reception chamber 20 (see FIG. 3) hold a stufling box 17 which is thus connected with the conical flange of the nozzle support 4. A liquid or gaseous medium is fed into the stuffing box 17 through an appropriate inlet pipe 18a, thence through the bores 18 of the bearing case, the corresponding bores 18 in the knife arms 13 andto the spraying nozzles 19 adjacent the fan blades 15 so as to form a protective film thereon, as well as on the inner wall of the reception chamber 20, which prevents the material particles from adhering thereto.
The medium should conveniently be guided as near as possible to the cutting edges of the knives 14. In this way the affected surface will be extensive and the cooling of the knives improved.
A V-belt 21 and a conventional drive 11a are provided to drive the bearing case 11 (FIG. 1) together with the attached cutting devices.
As can be seen from the drawing the bearing 10 along with the bearing case 11 supported thereby is subject to the action of a compression spring 22 which urges the bearing case along with the knives 14 towards the righthand side in FIG. 1.
An adjustment nut 23 with a lock nut 24 (see also FIG. 3) serves as an abutment against this displacement. By adjustment of the nut 23 the play between the knives 14 and the apertured member may be adjusted during operation as desired.
Further nozzles 25 (FIGS. 1, 2 and 3) are provided for additionally spraying the inner walls of the reception chamber 20.
In one preferred embodiment, illustrated in FIG. 1, two diametrically opposed knives 14 are shown, as a matter of example, so that on each revolution of the case 11 each strand of material issuing from the apertures 6 will be out twice. Should only a single cut be required to take place at a similar cutting speed, the knives can be provided such that their length corresponds to only half the length of the outer conical surface line of the apertured member 5 as shown at 14 in the modified partial view of FIG. 1a. On the other hand, it is also possible to provide additional knife arms, for example four or six (not illustrated.)
It is further possible to use the above-described axial adjustability of the device not only for a change in the play of the knives 14 but to provide an additional oscillating drive in the axial direction. Such a drive is shown, as a matter of example, in FIG. lb, at 11b, with a linkage 11c connecting the mechanism to the bearing case 11. i In combination with the cylindrical apertured member 5 of FIG. 1a, the oscillatory movement produces a drawing cut whichis advantageous with certain products. If the conical apertured member 5 of FIG. 1 is used, the length of the material particles can be varied by the axial oscillating movement of the cutting device. In this way the knife is made to jump over one or more rows of nozzles or apertures 6 before cutting the next row.
It is shown in the modification of FIG. 2a that it is also possible to mount shorter fan blades 15 on a separate support or crown 15a surrounding and radially spaced from the cutting knives 14, and to drive the crown independenly therefrom the drive for the knives. In this case the fan blades 15 rotate in the same plane as the knives 14, the volume traversed by the blades being concentric with and surrounding the volume traversed by the cutting device constituted by the knives. FIG. 2a shows, in an exemplary manner, drive means 15b, in the form of a motor-driven pinion, acting upon a toothed outer rim of the support or crown 15a. The latter may be supported by inner bearings, as shown.
It should also be explained that under certain conditions it may be convenient to build in additional fan blades between the blades 15 associated with the cutting members 14, which are disposed and driven independently from the knife arms 13. 7
Finally it should further be pointed out that when working sticky material, the surfaces of the blades 15, 15 should be kept as small as possible. An additional air stream should be produced in this case by the provision of an additional fan which is arranged outside the reception chamber 20 and effects exhaustion as well as cooling of the material particles. As a matter of example, FIGS. 2 and 3 show such a fan at 20a, for producing the additional air stream for the material particles. Again as a matter of example, an outlet or discharge 20b has been shown in the drawings for the material particles.
What I claim is:
1. A granulating device comprising, in combination, a
material-working apparatus in the form of a rotatable worm having outlet means arranged at the outlet end of said apparatus, said outlet means being in the form of a channeled and apertured member having substantially radial bores for the passage of the material upon rotation of said worm, at least one rotatable cutting member supported substantially coaxially with respect to said apparatus and on the side of said apertured member facing away therefrom, each cutting member having a cutting edge in linear contact with a portion of the outer surface of said apertured member, and at least one rotatable fan blade connectable with a respective cutting member, said cutting members and said fan blades when aligned presenta ing a unitary curved profile tangentially contacting said outer surface of the apertured member.
2. The granulating device as defined in claim 1, wherein said apertured member has therein substantially axial bores intermediate said radial bores, spaced apart and independent therefrom, and adapted for operative association with heating means for the material by the intermediary of the wall of said apertured member.
3. The granulating device as defined in claim 1, further comprising first drive means for rotating said worm, a rotatably journaled bearing case supporting said cutting members and said fan blades, and second drive means for rotating said bearing case independently from said first drive means.
4. The granulating device as defined in claim 3, wherein said bearing case is mounted coaxially with respect to said worm, further comprising adjustable abutment means in operative connection'with a portion of said bearing case, and biasing means for urging said bearing case toward said abutment means and for urging said cutting members axially away from said worm, so as to adjust the play between said cutting members and said outer surface of the apertured member.
V 5. The granulating device as defined in claim 3, further comprising third drive means for axially oscillating said bearing case and cyclically altering the play between said cutting members and said outer surface of the apertured member.
6. The granulating device as defined in claim 3, further comprising a housing for said apparatus, said apertured member forming the outlet end of said housing intermediate said worm and said bearing case, said cutting members having therein outlet apertures facing away from said apertured member, a conduit system operatively connected with said outlet apertures for allowing spraying fluid to be fed to the vicinity of said fan blades, and a reception chamber for the material, surrounding and spaced away from said cutting members.
7. The granulating device as defined in claim 6, wherein said apertured member has at least two substantially concentric rows of said radial bores, and the length of at least one of said cutting edges, contacting said outer surface of the apertured member, is shorter than the linear length of two adjoining rows of radial bores so that said one cutting edge will pass over only one of said two rows.
8. The granulating device as defined in claim 1, further comprising first drive means for rotating said worm, a.
.rotatable crown surrounding and radially spaced from References Cited said cutting members, for supporting said fan blades UNITED STATES PATENTS separately from said cutting members, second drive means 2 422 4 0 1947 Gordon 13 12 for rotating said cutting members alone, and third drive 5 2,524,751 10/1950 Berger 1812 means for rotating said crown independently from said 219471654 8/1950 Chapman 83-98 X second drive means. FOREIGN PATENTS 9. The granulating device as defined in claim 8, further 649,314 10/1962 Canadacomprising fan means for producing an air stream in 10 1148154 6/1957 France the vicinity of said cutting members- WILLLAM J. STEPHENSON, Primary Examiner.

Claims (1)

1. A GRANULATING DEVICE COMPRISING, IN COMBUSTION, A MATERIAL-WORKING APPARATUS IN THE FORM OF A ROTATABLE WORM HAVING OUTLET MEANS ARRANGED AT THE OUTLET END OF SAID APPARATUS, SAID OUTLET MEANS BEING IN THE FORM OF A CHANNELED AND APERTURED MEMBER HAVING SUBSTANTIALLY RADIAL BORES FOR THE PASSAGE OF THE MATERIAL UPON ROTATION OF SAID WORM, AT LEAST ONE ROTATABLE CUTTING MEMBER SUPPORTED SUBSTANTIALLY COAXIALLY WITH RESPECT TO SAID APPARATUS AND ON THE SIDE OF SAID APERTURED MEMBER FACING AWAY THEREFROM, EACH CUTTING MEMBER HAVING A CUTTING EDGE IN LINEAR CONTACT WITH A PORTION OF THE OUTER SURFACE OF SAID APERTURED MEMBER, AND AT LEAST ONE ROTATABLE FAN BLADE CONNECTABLE WITH A RESPECTIVE CUTTING MEMBER, SAID CUTTING MEMBERS AND SAID FAN BLADES WHEN ALIGNED PRESENTING A UNITARY CURVED PROFILE TANGENTIALLY CONTACTING SAID OUTER SURFACE OF THE APERTURED MEMBER.
US428808A 1964-02-01 1965-01-28 Granulating device Expired - Lifetime US3337913A (en)

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Cited By (32)

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US3467987A (en) * 1967-07-26 1969-09-23 Phillips Petroleum Co Extruder-pelletizer apparatus
US3642406A (en) * 1971-01-07 1972-02-15 Baker Perkins Inc Mixing, extruding, and severing apparatus
US3737269A (en) * 1971-08-23 1973-06-05 Unex Machine & Tool Co Inc Cutting apparatus for extruded material
FR2318719A1 (en) * 1975-07-25 1977-02-18 Japan Steel Works Ltd SUBMERSIBLE CUTTING ELEMENT PASTILER
US4046497A (en) * 1974-11-21 1977-09-06 The Dow Chemical Company Cutting apparatus
US4123207A (en) * 1976-03-29 1978-10-31 Gala Industries, Inc. Underwater pelletizer and heat exchanger die plate
US4184833A (en) * 1977-10-25 1980-01-22 Leesona Corporation Pelletizing apparatus
US4251198A (en) * 1979-04-27 1981-02-17 Gala Industries, Inc. Cutter hub with replaceable knife blades for underwater pelletizer
US4300877A (en) * 1979-01-10 1981-11-17 Sterling Extruder Corp. Underwater pelletizer
FR2507953A1 (en) * 1981-06-22 1982-12-24 Polysar Ltd APPARATUS FOR RECOVERING DRY POLYMER IN THE FRAGMENTAL AND POROUS CONDITION
FR2515934A1 (en) * 1981-11-12 1983-05-13 Gerber Prod FOOD EXTRUDER APPARATUS AND PROCESS FOR PRODUCTION OF EASILY DIGESTIBLE PORTIONS
US4500271A (en) * 1983-12-06 1985-02-19 Gala Industries, Inc. Underwater pelletizer with adjustable blade assembly
EP0145839A2 (en) * 1983-11-02 1985-06-26 Santrade Ltd. Device for extruding flowable substances
US5041249A (en) * 1989-12-26 1991-08-20 Exxon Chemical Patent Inc. Process for low-temperature elastomer finishing
WO1991013672A3 (en) * 1990-03-06 1991-12-12 Abel Guenther Apparatus for separating liquids and solids
EP0491238A1 (en) * 1990-12-17 1992-06-24 Fuji Paudal Co., Ltd. Screw-type extrusion granulating apparatus
US5240400A (en) * 1990-12-17 1993-08-31 Fuji Paudal Kabushiki Kaisha Screw-type extrusion granulating apparatus, especially for producing very fine granules
US5304055A (en) * 1991-11-27 1994-04-19 Nabisco, Inc. Apparatus and methods for the production of three-dimensional food products
EP0612599A1 (en) * 1993-02-23 1994-08-31 Corning Incorporated Rotary die for extruding honeycombs
WO2001019580A1 (en) * 1999-09-15 2001-03-22 Cognis Deutschland Gmbh & Co. Kg Method for formulating polyamide resins which are solid at room temperature
US20040241269A1 (en) * 2001-08-01 2004-12-02 Reinhardt-Karsten Muerb Device for granulating a thermoplastic, which is extruded from nozzles
DE102004007713A1 (en) * 2004-02-16 2005-09-01 Leistritz Extrusionstechnik Gmbh Device for producing rounded pellets
US20050220920A1 (en) * 2004-04-01 2005-10-06 Fridley Michael A Steep angle cutter hub and blade assembly
US20080032016A1 (en) * 2006-08-07 2008-02-07 Chris Willoughby Apparatus and method for curled extrudate
US20100043616A1 (en) * 2008-08-20 2010-02-25 Wenger Manufacturing, Inc. Extruder cut-off knife assembly having remote adjustment mechanism
US20100068324A1 (en) * 2008-09-18 2010-03-18 Econ Gmbh Apparatus for granulating plastic
US9272468B1 (en) * 2008-04-03 2016-03-01 Purdue Research Foundation Apparatus and method for producing biobased carriers from byproducts of biomass processing
CN105479617A (en) * 2015-11-17 2016-04-13 李创生 Plastic granulation machine
CN107930533A (en) * 2017-12-18 2018-04-20 张家界三木能源开发有限公司 A kind of reciprocating biomass granule forming machine
CN112293773A (en) * 2020-09-24 2021-02-02 申亚农牧科技股份有限公司 A granulation equipment for producing fodder
CN112519018A (en) * 2020-11-12 2021-03-19 宁波顺泽橡胶有限公司 A butyronitrile latex and PVC emulsion mixing arrangement for production of rubber and plastic alloy
US20210114260A1 (en) * 2019-10-18 2021-04-22 Maag Automatik Gmbh Underwater Pelletizer

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DE2825287A1 (en) * 1978-06-09 1979-12-13 Berstorff Gmbh Masch Hermann DEVICE FOR GRANULATING PLASTIC MELT
DE4419786C1 (en) * 1994-06-06 1995-12-21 S Rockstedt Gmbh Maschf Hot cut pelletizer

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US2422480A (en) * 1945-06-29 1947-06-17 Farrel Birmingham Co Inc Means for treating rubber
US2524751A (en) * 1947-02-04 1950-10-10 Armstrong Cork Co Comminuting machine
FR1148154A (en) * 1955-04-19 1957-12-04 Process and device for the fine preparation of plastic masses, in particular ceramic mixtures
US2947654A (en) * 1956-03-26 1960-08-02 Wood Processes Oregon Ltd Method of manufacturing a composite board product

Cited By (45)

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Publication number Priority date Publication date Assignee Title
US3467987A (en) * 1967-07-26 1969-09-23 Phillips Petroleum Co Extruder-pelletizer apparatus
US3642406A (en) * 1971-01-07 1972-02-15 Baker Perkins Inc Mixing, extruding, and severing apparatus
US3737269A (en) * 1971-08-23 1973-06-05 Unex Machine & Tool Co Inc Cutting apparatus for extruded material
US4046497A (en) * 1974-11-21 1977-09-06 The Dow Chemical Company Cutting apparatus
FR2318719A1 (en) * 1975-07-25 1977-02-18 Japan Steel Works Ltd SUBMERSIBLE CUTTING ELEMENT PASTILER
US4123207A (en) * 1976-03-29 1978-10-31 Gala Industries, Inc. Underwater pelletizer and heat exchanger die plate
US4184833A (en) * 1977-10-25 1980-01-22 Leesona Corporation Pelletizing apparatus
US4300877A (en) * 1979-01-10 1981-11-17 Sterling Extruder Corp. Underwater pelletizer
US4251198A (en) * 1979-04-27 1981-02-17 Gala Industries, Inc. Cutter hub with replaceable knife blades for underwater pelletizer
FR2507953A1 (en) * 1981-06-22 1982-12-24 Polysar Ltd APPARATUS FOR RECOVERING DRY POLYMER IN THE FRAGMENTAL AND POROUS CONDITION
FR2515934A1 (en) * 1981-11-12 1983-05-13 Gerber Prod FOOD EXTRUDER APPARATUS AND PROCESS FOR PRODUCTION OF EASILY DIGESTIBLE PORTIONS
EP0145839A2 (en) * 1983-11-02 1985-06-26 Santrade Ltd. Device for extruding flowable substances
EP0145839A3 (en) * 1983-11-02 1986-03-19 Santrade Ltd. Device for extruding flowable substances
US4500271A (en) * 1983-12-06 1985-02-19 Gala Industries, Inc. Underwater pelletizer with adjustable blade assembly
US5041249A (en) * 1989-12-26 1991-08-20 Exxon Chemical Patent Inc. Process for low-temperature elastomer finishing
WO1991013672A3 (en) * 1990-03-06 1991-12-12 Abel Guenther Apparatus for separating liquids and solids
EP0518938A1 (en) * 1990-03-06 1992-12-23 ABEL, Gunther Apparatus for separating liquids and solids
EP0491238A1 (en) * 1990-12-17 1992-06-24 Fuji Paudal Co., Ltd. Screw-type extrusion granulating apparatus
US5240400A (en) * 1990-12-17 1993-08-31 Fuji Paudal Kabushiki Kaisha Screw-type extrusion granulating apparatus, especially for producing very fine granules
US5304055A (en) * 1991-11-27 1994-04-19 Nabisco, Inc. Apparatus and methods for the production of three-dimensional food products
US5435714A (en) * 1991-11-27 1995-07-25 Nabisco, Inc. Apparatus for the production of three-dimensional food products
EP0612599A1 (en) * 1993-02-23 1994-08-31 Corning Incorporated Rotary die for extruding honeycombs
WO2001019580A1 (en) * 1999-09-15 2001-03-22 Cognis Deutschland Gmbh & Co. Kg Method for formulating polyamide resins which are solid at room temperature
US7008203B2 (en) * 2001-08-01 2006-03-07 Rieter Automatik Gmbh Device for granulating a thermoplastic, which is extruded from nozzles
US20040241269A1 (en) * 2001-08-01 2004-12-02 Reinhardt-Karsten Muerb Device for granulating a thermoplastic, which is extruded from nozzles
DE102004007713A1 (en) * 2004-02-16 2005-09-01 Leistritz Extrusionstechnik Gmbh Device for producing rounded pellets
US20050220920A1 (en) * 2004-04-01 2005-10-06 Fridley Michael A Steep angle cutter hub and blade assembly
US7318719B2 (en) 2004-04-01 2008-01-15 Gala Industries, Inc. Steep angle cutter hub and blade assembly
US9113657B2 (en) 2006-08-07 2015-08-25 Kellogg Company Apparatus and method for curled extrudate
US20080032016A1 (en) * 2006-08-07 2008-02-07 Chris Willoughby Apparatus and method for curled extrudate
US7883735B2 (en) 2006-08-07 2011-02-08 Kellogg Company Apparatus and method for curled extrudate
US10051858B2 (en) * 2008-04-03 2018-08-21 Purdue Research Foundation Apparatus and method for producing biobased carriers from byproducts of biomass processing
US20160135449A1 (en) * 2008-04-03 2016-05-19 Purdue Research Foundation Apparatus and method for producing biobased carriers from byproducts of biomass processing
US9272468B1 (en) * 2008-04-03 2016-03-01 Purdue Research Foundation Apparatus and method for producing biobased carriers from byproducts of biomass processing
US8056458B2 (en) 2008-08-20 2011-11-15 Wenger Manufacturing, Inc. Extruder cut-off knife assembly having remote adjustment mechanism
US20100043616A1 (en) * 2008-08-20 2010-02-25 Wenger Manufacturing, Inc. Extruder cut-off knife assembly having remote adjustment mechanism
CN101716806A (en) * 2008-09-18 2010-06-02 易康有限公司 Device for granulating plastic
US20100068324A1 (en) * 2008-09-18 2010-03-18 Econ Gmbh Apparatus for granulating plastic
CN105479617A (en) * 2015-11-17 2016-04-13 李创生 Plastic granulation machine
CN107930533A (en) * 2017-12-18 2018-04-20 张家界三木能源开发有限公司 A kind of reciprocating biomass granule forming machine
US20210114260A1 (en) * 2019-10-18 2021-04-22 Maag Automatik Gmbh Underwater Pelletizer
US11707865B2 (en) * 2019-10-18 2023-07-25 Maaag Automatik Gmbh Underwater pelletizer
CN112293773A (en) * 2020-09-24 2021-02-02 申亚农牧科技股份有限公司 A granulation equipment for producing fodder
CN112519018A (en) * 2020-11-12 2021-03-19 宁波顺泽橡胶有限公司 A butyronitrile latex and PVC emulsion mixing arrangement for production of rubber and plastic alloy
CN112519018B (en) * 2020-11-12 2022-08-12 宁波顺泽橡胶有限公司 A butyronitrile latex and PVC emulsion mixing arrangement for production of rubber and plastic alloy

Also Published As

Publication number Publication date
SE311739B (en) 1969-06-23
NL6500527A (en) 1965-08-02
BE658923A (en) 1965-05-17
GB1100841A (en) 1968-01-24

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