AU674787B2 - Device for producing a granular material - Google Patents
Device for producing a granular material Download PDFInfo
- Publication number
- AU674787B2 AU674787B2 AU76112/94A AU7611294A AU674787B2 AU 674787 B2 AU674787 B2 AU 674787B2 AU 76112/94 A AU76112/94 A AU 76112/94A AU 7611294 A AU7611294 A AU 7611294A AU 674787 B2 AU674787 B2 AU 674787B2
- Authority
- AU
- Australia
- Prior art keywords
- belt
- strands
- wires
- warp
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B01J2/26—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
-
- 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
- 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
- B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Belt Conveyors (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
WILHELM DAUSTER EUROPEAN PATENT ATTORNEYS D-70174 Stuttgart Hospitalstrasse 8 Tel: (0811) 291133 191857 Applicant: Stuttgart, Sept. 27, 1993 Santrade Ltd. P 190 258 Alpenquai 12 Dr.W/Ei CH-6002 Luzern Apparatus for manufacturing granulated material The invention refers to an apparatus for manufacturing granulated material from free-flowing viscous substances that are made into drops and solidify or gel, consisting of a vessel, charged with the free-flowing substance, with outflow openings which, for forming the drops, are intermittently opened or closed by a perforated belt that is periodically moved past them.
An apparatus of this kind is known from EP 0 134 944 Bl, where an endless continuously recirculating belt is guided about two reversing pulleys. The belt consists of a plastic material, for example PVC, and is guided about two plastic pulleys of which one is driven. However, plastic belts wear and age relatively rapidly. This may lead to the need to provide for relatively frequent belt changes, causing production stoppages. On the other hand, it is also regarded as a disadvantage, under certain aspects, that after longer periods of operation the belt does no longer lie sufficiently close against the discharge slit of the vessel, so that its 2 operation deteriorates unless the belt is currently retensioned.
Now, it is an object of the invention to overcome these disadvantages and to propose a belt that is at the same time robust and practically non-aging. Further, it is an object of the intention to propose a method for producing such a belt that enables the belt to be manufactured simply and exactly.
Summary of Invention According to the present invention there is provided an apparatus for manufacturing granulated material from a liquid, the apparatus comprising: delivery means for delivering the liquid to a drop-forming cegion, said delivery means comprising outflow openings through which the liquid can flow; (ii) a perforated elastic belt that extends across the outflow openings of the delivery means, said perforated elastic belt comprising metallic strands or 20 wires in the belt between the perforations for reinforcing the belt; and (iii) a driving means for moving the perforated elastic belt across the outflow openings in the delivery means so that the outflow openings of the delivery means will be intermittently opened and closed, wherein when the outflow openings are opened, portions of the liquid can flow through the perforations to form a granule on subsequent cooling.
staf{fuan/keep/76112.94.specd 21.8.96 2a The first-mentioned object of the invention is achieved by the fact that the belt is an elastic belt that is reinforced by inserted metal strands or wires and that the metal strands or wires are arranged according to a precise geometric pattern such that there are obtained between the metal strands or wires free spaces that are uniformly distributed over the belt surface and in which the openings of the belt are arranged. Such a configuration leads to sort of a wire belt that is well-suited for absorbing the forces occurring in operation. Still, the belt also provides the possibility to arrange the perforation openings in a simple way.
According to a further development of the invention, the metal strands or wires are arranged in the longitudinal direction of the belt and at equal spacings, in the manner of warp threads, and other metal strands or wires are arranged vertically thereto and at the same spacings as the warp strands, in the manner of weft strands. One obtains in this way a lattice-like belt with equally distributed 20 free spaces.
Such a belt provides the advantage that it can be produced in a simple way by embedding in rubber or plastic at first a metal belt structure, consisting of weft and warp strands, and providing 0 oe staffuan/koepI76112.94.specI 21.8.96 3 thereafter the openings in the free spaces formed therebetween, by scanning the position of the warp and weft strands. Given the fact that the free spaces are arranged at exact spacings one relative to the other, it is possible to locate the perforation openings at exact spacings by mechanical means. Advantageously, scanning can be effected inductively, this being rendered possible by the use of metal strands or wires.
The invention is depicted in the drawings with reference to exemplary embodiments, and will be explained below. In the drawings: Figure 1 Figure 2 Figure 3 Figure 4 shows a schematic side view of an apparatus for manufacturing granulated material; shows a top view of the lower run of the continuously recirculating belt according to Figure 1; shows an enlarged partial section through the lower run of the belt, taken along line III-III in Figure 2; and shows a section through the belt according to Figure 3, taken along line IV-IV.
Figures 1 and 2 show an endless continuously recirculating belt above a conveyor belt especially a cooling belt designed as a steel belt, the belt being guided about two reversing pulleys (3 and 4) that are mounted, in a manner not shown in detail, in a support frame above the conveyor belt The reversing pulley is driven in the direction indicated by arrow Figure 2 shows that this is achieved by the fact that the supporting shaft (3a) of -4the reversing pulley is provided with a gear which latter is driven by an electric motor via a pinion (7) The two reversing pulleys (3 and 4) are supported in such a way that their mutual distance can be adjusted within given limits. To this end, the reversing pulley is retained in a longitudinal slot indicated in broken lines in Figure 1. The distance between the reversing pulleys (3 and 4) can be adjusted by means of a spacer consisting of the two parts and 10b) and being provided with a screw bolt (11) Spacers of this type are provided on both sides of the reversing pulleys.
It would of course also be possible to achieve the belt tension for example by mounting the reversing pulley on a pivot arm upon which a corresponding force is exerted.
The continuously recirculating belt only a section of the lower run (2a) is shown in Figure 3 consists of a plastic material that is reinforced by embedded metal strands (16, 17). The metal strands or wires (16) are arranged parallel to the direction of movement of the belt and at equal spacings one relative to the other.
Thus, the metal strands or wires (16) extend within the belt in the manner of warp threads. They are crossed at right angles by additional, identically designed metal strands or wires The metal strands or wires therefore, form sort of weft threads that are again arranged at mutual spacings but crosswise to the direction of movement of the belt One thereby obtains within the belt a wire lattice forming exactly square free spaces (18) in which openings (12) can be provided in a given arrangement.
As can be seen in Figure 1 the belt is in qontact with the curved outer surface of/t tubular body (14) that is provided, on its outer surface facing the lower run (2a) of 7- 00'' /r 5 the belt, with a slit (15) that extends transversely to the belt and that is either closed by the perforated belt ying closely against it, or released every time it is passed by a row of openings (12).
The tubular body (14) comprises a guide channel (19) for a viscous and free-flowing compound that is supplied in freeflowing, especially heated, condition in the direction indicated by arrow Openings extending from this guide channel (19) open into the slit (15) that is configured as an open groove. If, therefore, the supply channel (VA) is charged with the material to be formed into drops, the latter may drop into the slit (15) and from there through the sleeves (26) and onto the conveyer belt formed by the cooling belt There the compound solidifies in the form of small lentil-shaped bodies.
In order to maintain the temperature of the compound to be formed into drops stable throughout the apparatus, the tubular body (14) is heated in a manner not shown in detail.
In addition, the whole apparatus is closed by a cover hood Directing device 414... 14b) in the form of radially projecting ribs serve to urge the product, that emerges from the tubular body, back upon the inner belt surface with its openings (12).
The belt used in the apparatus can be manufactured in a very simple way by coating initially the metal lattice formed by the metal strands or wires (16 and 17) on both sides with a plastic material, whereafter the openings (12) can be applied in a simple way by scanning inductively the position of the metal strands or wires (16 and 17) by means of a suitable device. Due to the exact arrangement of the metal strands or wires (16 and 17) and the free spaces (18) U 0 I1' 6 -6provided therebetween, the openings (12) can then be provided in the free spaces according to a given pattern, in the embodiment shown in Figure 4 in the middle of each of the square free spaces.
Claims (9)
1. Apparatus for manufacturing granulated material from a liquid, the apparatus comprising: delivery means for delivering the liquid to a drop-forming region, said delivery means comprising outflow openings through which the liquid can flow; (ii) a perforated elastic belt that extends across the outflow openings of the delivery means, said perforated elastic belt comprising metallic strands or wires in the belt between the perforations for reinforcing the belt; and (iii) a driving means for moving the perforated elastic belt across the outflow openings in the 15 delivery means so that the outflow openings of the delivery means will be intermittently opened and closed, wherein when the outflow openings are opened, portions of the *o liquid can flow through the perforations to form a granule on subsequent cooling. 20
2. Apparatus for manufacturing granulated material from a liquid according to claim 1, said apparatus further e• :comprising a cooling belt arranged below the perforated elastic belt that can receive the portions of liquid that fall from the perforations to the cooling belt where they 25 solidify. *0 staffuanIeep/76112.94.6ams 21.8.96 8
3. Apparatus according to claim 1 or claim 2, characterized in that metallic strands or wires are arranged in the longitudinal direction of the belt and at equal spacings, in the manner of warp strands, and other metal strands or wires are arranged transversely thereto and at the same spacings as the warp strands, in the manner of weft strands.
4. Method for producing a belt for use in the apparatus according to any one of claims 1 to 3, characterized in that a metal belt composed of warp and weft strands is embedded in rubber or a plastic material and that thereafter perforation openings are made in the remaining free spaces by scanning the position of the warp and weft strands and forming the perforations in the free spaces.
Method according to Claim 4, characterized in that scanning is effected inductively.
6. A belt for use on apparatus for manufacturing granulated material from a liquid, said belt comprising a plastic or rubber material, a series of perforations and metallic strands or wires, in the belt between the perforations for reinforcing the belt.
7. The belt according to claim 6 characterised in that the metallic strands or wires are arranged in a lattice in the manner of warp and weft strands.
8. An apparatus for manufacturing granulated material substantially as herein described with reference to the accompanying drawings. staf/uankeop/76112.94.claims 8.10.96 9
9. A method for manufacturing a belt substantially as herein described. A perforated belt for use on an apparatus for manufacturing granulated material substantially as herein described. DATED THIS 25TH DAY OF JULY 1996. SANTRADE LTD By its Patent Attorneys: GRIFFITH HACK CO Fellows Institute of Patent Attorneys of Australia o r. o r ~j~b j V r v staWuarikeeWpI761 12.94.caims 21.8.96 I I r C r r WILHE LM DAUSTER EUROPEAN PATENT ATTORNEYS D-70174 Stuttgart Hospitalstrasse 8 Tel: (0811) 291133 191857 Applicant: Santrade Ltd. Alpenquai 12 CH-6002 Luzern Stuttgart, Sept. 27, 1993 P 10 258 Dr.W/Ei Abstract 1. Apparrtus for manufacturing granulated material. 2.1 Known, so-called belt drop formers utilise perforated plastic belts for forming the drops. 2.2 It is therefore proposed to provide the belt with a metal insert consisting of metal wires or strands arranged at equal distances, in the manner of warp and weft threads. The perforation openings can then be located in the free spaces formed between the warp and weft strands. This permits the production of a robust belt, and a simple manufacturing method. 2.3 Utilisation for belt drop formers. 3. Figure 4
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4332954 | 1993-09-28 | ||
| DE19934332954 DE4332954C1 (en) | 1993-09-28 | 1993-09-28 | Durable flexible endless belt including geometric full width wire strand chain lattice - includes regular inter-strand spaces, used for making granular products from solidifying solids. |
| PCT/EP1994/002605 WO1995009076A1 (en) | 1993-09-28 | 1994-08-05 | Device for producing a granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU7611294A AU7611294A (en) | 1995-04-18 |
| AU674787B2 true AU674787B2 (en) | 1997-01-09 |
Family
ID=6498811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU76112/94A Expired - Fee Related AU674787B2 (en) | 1993-09-28 | 1994-08-05 | Device for producing a granular material |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0670764A1 (en) |
| JP (1) | JPH08502450A (en) |
| CN (1) | CN1114830A (en) |
| AU (1) | AU674787B2 (en) |
| CA (1) | CA2148272A1 (en) |
| DE (1) | DE4332954C1 (en) |
| RU (1) | RU2097183C1 (en) |
| WO (1) | WO1995009076A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10144257B4 (en) * | 2001-09-03 | 2005-06-16 | Santrade Ltd. | Device for the production of granules |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1235567B (en) * | 1963-02-19 | 1967-03-02 | Becker & Van Huellen | Method for producing an endless conveyor belt |
| GB1102153A (en) * | 1965-04-02 | 1968-02-07 | Wienert Fritz Otto | Pellet manufacture and apparatus therefor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7804119A (en) * | 1977-09-29 | 1979-04-02 | Sulzer Ag | DEVICE FOR THE CONTINUOUS LIQUID-SEPARATORY PRESSING OF MATERIAL TO BE PRESSED. |
| SU1151261A1 (en) * | 1983-07-21 | 1985-04-23 | Kh Otdel Vni Pt I Elektroizol | Screen of filter press |
| DE3336208C2 (en) * | 1983-07-29 | 1986-01-16 | Santrade Ltd., Luzern/Lucerne | Device for the production of granules |
| FI83791C (en) * | 1989-08-24 | 1991-08-26 | Neste Oy | SLITSTARKT BAND OCH FOERFARANDE FOER FRAMSTAELLNING AV DETTA. |
-
1993
- 1993-09-28 DE DE19934332954 patent/DE4332954C1/en not_active Expired - Fee Related
-
1994
- 1994-08-05 RU RU9495112523A patent/RU2097183C1/en active
- 1994-08-05 AU AU76112/94A patent/AU674787B2/en not_active Expired - Fee Related
- 1994-08-05 WO PCT/EP1994/002605 patent/WO1995009076A1/en not_active Application Discontinuation
- 1994-08-05 EP EP94926155A patent/EP0670764A1/en not_active Withdrawn
- 1994-08-05 CN CN 94190723 patent/CN1114830A/en active Pending
- 1994-08-05 JP JP7510076A patent/JPH08502450A/en active Pending
- 1994-08-05 CA CA 2148272 patent/CA2148272A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1235567B (en) * | 1963-02-19 | 1967-03-02 | Becker & Van Huellen | Method for producing an endless conveyor belt |
| GB1102153A (en) * | 1965-04-02 | 1968-02-07 | Wienert Fritz Otto | Pellet manufacture and apparatus therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995009076A1 (en) | 1995-04-06 |
| EP0670764A1 (en) | 1995-09-13 |
| AU7611294A (en) | 1995-04-18 |
| JPH08502450A (en) | 1996-03-19 |
| RU2097183C1 (en) | 1997-11-27 |
| DE4332954C1 (en) | 1994-06-16 |
| CN1114830A (en) | 1996-01-10 |
| CA2148272A1 (en) | 1995-04-06 |
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