WO1992009525A1 - Mould to be used for compacting pellets - Google Patents

Mould to be used for compacting pellets Download PDF

Info

Publication number
WO1992009525A1
WO1992009525A1 PCT/NL1991/000241 NL9100241W WO9209525A1 WO 1992009525 A1 WO1992009525 A1 WO 1992009525A1 NL 9100241 W NL9100241 W NL 9100241W WO 9209525 A1 WO9209525 A1 WO 9209525A1
Authority
WO
WIPO (PCT)
Prior art keywords
mould
holes
spraying
producing
cleaning
Prior art date
Application number
PCT/NL1991/000241
Other languages
French (fr)
Inventor
Huibert Konings
Original Assignee
Harko B.V.
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 Harko B.V. filed Critical Harko B.V.
Priority to JP4502177A priority Critical patent/JPH06502800A/en
Publication of WO1992009525A1 publication Critical patent/WO1992009525A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • 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
    • B30B11/20—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring
    • B30B11/201—Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring for extruding material
    • B30B11/202—Ring constructions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C01B32/55—Solidifying

Definitions

  • Mould to be used for compacting pellets.
  • the invention concerns an annular mould as used in so-called pelletisers where powder through radial holes in the annular mould is pressed by rollers. By breaking off the bars which are formed this way short pieces with the profile of the hole in the mould are formed.
  • the subject mould of the invention is a special means to compact carbon dioxide powder (solid CO 2 at a temperature below minus 56°) into tough bars with a triangle cross section. These bars are very suitable to be used for cleaning surfaces by spraying. It has been proved that the spraying material stays sharp even when some sublimation occurs by the spraying action.
  • the subject of the invention is a mould to produce small bars of heavy compressed carbon dioxide with a triangle cross section.
  • the mould has the form of a ring and is used in a machine where rollers on the inside of the ring press the powdered carbon dioxide into radial holes. These holes are narrowing and converge into a channel with a triangle cross section. The end of the channel carries means to break the bars.
  • Fig. 1 shows the mould and the rollers.
  • Fig. 2 shows a cross section of the mould at the position of the holes.
  • Fig. 3 shows the inside of the mould.
  • Fig. 4 shows the outside of the mould.
  • Fig. 5 shows the cross section of the space between two holes.
  • Fig. 6 shows the cross section of the partition between two triangular channels
  • Fig. 7 shows a pellet produced with the mould.
  • Fig. 8 shows an alternative pattern of hales.
  • Fig, 1 (1) is the annular mould and (2) the rollers which roll along the inside (3). Centerlines (4) indicate schematic the position of the holes (5).
  • Fig. 2 shows that the holes (5) have a converging part (6) that converts in a mainly triangle channel (7) with mainly parallel sides (8). At the end of the channel (7) is a widening outlet (9).
  • At (10) is indicated that two holes (5) are connected into one hole while the channels (7) are formed by a partition (11).
  • the partition (11) is chamfered (12) at the entry.
  • On the outlet the partition (11) can have a breaking edge (13) which breaks the bars of compressed carbon dioxide.
  • FIG. 5 is indicated how walls (14) between holes (5) and (10) are chamfered (15).
  • Fig. 7 is shown a spraying particle (19) produced with a annular mould (1) according to the invention.
  • Fig. 8 shows an alternative pattern of singular holes (5).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Glanulating (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Crushing And Grinding (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention concerns an annular mould (1) for producing pellets in the form of short bars with a triangular cross-section. The pellets are formed by the pressing action of rollers (2) on the inside (3) of the mould (1) where the powdered dry ice (carbon dioxide) is forced through radial holes. The holes have a converging intake, a channel with mainly parallel sides and a widening outlet. It is possible to have partitions with provisions to break the bar into short pellets.

Description

Mould to be used for compacting pellets.
The invention concerns an annular mould as used in so-called pelletisers where powder through radial holes in the annular mould is pressed by rollers. By breaking off the bars which are formed this way short pieces with the profile of the hole in the mould are formed. The subject mould of the invention is a special means to compact carbon dioxide powder (solid CO2 at a temperature below minus 56°) into tough bars with a triangle cross section. These bars are very suitable to be used for cleaning surfaces by spraying. It has been proved that the spraying material stays sharp even when some sublimation occurs by the spraying action.
The treatment of surfaces with carbon dioxide particles is known from the American patent Nr. US-A-4389820. It is found that the normal proces of compressing and crushing of solid carbon dioxide results in irregular and blunt spraying material.
The subject of the invention is a mould to produce small bars of heavy compressed carbon dioxide with a triangle cross section. The mould has the form of a ring and is used in a machine where rollers on the inside of the ring press the powdered carbon dioxide into radial holes. These holes are narrowing and converge into a channel with a triangle cross section. The end of the channel carries means to break the bars.
The invention is described with the help of the drawings.
Fig. 1 shows the mould and the rollers.
Fig. 2 shows a cross section of the mould at the position of the holes. Fig. 3 shows the inside of the mould.
Fig. 4 shows the outside of the mould.
Fig. 5 shows the cross section of the space between two holes.
Fig. 6 shows the cross section of the partition between two triangular channels,
Fig. 7 shows a pellet produced with the mould.
Fig. 8 shows an alternative pattern of hales.
In Fig, 1 (1) is the annular mould and (2) the rollers which roll along the inside (3). Centerlines (4) indicate schematic the position of the holes (5).
Fig. 2 shows that the holes (5) have a converging part (6) that converts in a mainly triangle channel (7) with mainly parallel sides (8). At the end of the channel (7) is a widening outlet (9).
At (10) is indicated that two holes (5) are connected into one hole while the channels (7) are formed by a partition (11). The partition (11) is chamfered (12) at the entry. On the outlet the partition (11) can have a breaking edge (13) which breaks the bars of compressed carbon dioxide.
In Fig. 5 is indicated how walls (14) between holes (5) and (10) are chamfered (15).
In Fig. 7 is shown a spraying particle (19) produced with a annular mould (1) according to the invention.
The pattern of the holes (5) and (10) is concentrated in the middle section (16). The area's (17) along the edge of the inside surface (3) are provided with shallow grooves (18). These grooves (18) prevent jamming of the machine in case of superfluous supply of carbon dioxide. Fig. 8 shows an alternative pattern of singular holes (5).

Claims

Claims.
1] Annular mould for producing by pressing particles meant for cleaning of surfaces by means of spraying characterised in that the mould (1) on the inside (3) is provided of holes (5) and (10) in radial direction which converge to mainly triangle channels (7) with mainly parallel sides (8) which convert into a widening outlet (9) on the outside surface of the mould. 21 Annular mould for producing by pressing particles meant for cleaning of surfaces by means of spraying as in claim 1 characterised in that a part of the holes (5) are combined in two's with a partition (11) between the triangle channels (7) and together with the singular holes (5) form a pattern of nearby placed holes (5), (10) in a disk (16) which is about in the centre of the ring (1).
31 Annular mould for producing by pressing particles meant for cleaning of surfaces by means of spraying as in claim 1 and 2 characterised in that the partition (11) between triangle channels (7) on the side directed to the centre is provided with chamfers (12) and on the side of the outlet (9) is provided with a breaking edge (13).
41 Annular mould for producing by pressing particles meant for cleaning of surfaces by means of spraying as in claim 1, 2 and 3 characterised in that the inside surface (3) of the ring is provided with grooves (18) which reach from the edge to close to the holes (5), (10),
51 Annular mould for producing by pressing particles meant for cleaning of surfaces by means of spraying as in claim 1, 2, 3, and 4 characterised in that the mould (1) is used to compress dry ice (powdered solid CO2) into short bars (19) with a triangular profile.
PCT/NL1991/000241 1990-11-28 1991-11-28 Mould to be used for compacting pellets WO1992009525A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4502177A JPH06502800A (en) 1990-11-28 1991-11-28 Mold used to solidify pellets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002605 1990-11-28
NL9002605A NL9002605A (en) 1990-11-28 1990-11-28 DIE FOR PRESSING PELLETS.

Publications (1)

Publication Number Publication Date
WO1992009525A1 true WO1992009525A1 (en) 1992-06-11

Family

ID=19858049

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1991/000241 WO1992009525A1 (en) 1990-11-28 1991-11-28 Mould to be used for compacting pellets

Country Status (5)

Country Link
EP (1) EP0559747A1 (en)
JP (1) JPH06502800A (en)
AU (1) AU9048191A (en)
NL (1) NL9002605A (en)
WO (1) WO1992009525A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301237A (en) * 1993-07-14 1995-02-01 Harko Bv Method for treating surfaces with cryogenic particles
NL1013692C2 (en) * 1999-11-29 2001-05-30 Huibert Konings Method for manufacturing cryogenic particles from liquid carbonic acid.
CN105584087A (en) * 2015-12-23 2016-05-18 格薪源生物质燃料有限公司 Vertical ring die biomass fuel briquetting forming machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL194233C (en) * 1994-08-17 2001-10-02 Huibert Konings Pelletizing device, for pressing cryogenic particles.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388692A (en) * 1963-02-15 1965-02-12 Richard Sizer Ltd Improved extrusion die especially for moldable or plastic materials
US3702519A (en) * 1971-07-12 1972-11-14 Chemotronics International Inc Method for the removal of unwanted portions of an article by spraying with high velocity dry ice particles
FR2134874A5 (en) * 1971-04-23 1972-12-08 Novacel Sa Multi section extrusion die - for mfg irregular sodium sulphate crystals for seeding synthetic sponges
EP0332886A2 (en) * 1988-03-12 1989-09-20 Klaus Bloch Thermoplastic abrasive blasting material
FR2633706A1 (en) * 1988-06-29 1990-01-05 Anhydride Carbonique Ind SOLID CARBON DIOXIDE PRODUCT, PACKAGING DEVICE AND PACKAGING METHOD OF THE PRODUCT

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1388692A (en) * 1963-02-15 1965-02-12 Richard Sizer Ltd Improved extrusion die especially for moldable or plastic materials
FR2134874A5 (en) * 1971-04-23 1972-12-08 Novacel Sa Multi section extrusion die - for mfg irregular sodium sulphate crystals for seeding synthetic sponges
US3702519A (en) * 1971-07-12 1972-11-14 Chemotronics International Inc Method for the removal of unwanted portions of an article by spraying with high velocity dry ice particles
EP0332886A2 (en) * 1988-03-12 1989-09-20 Klaus Bloch Thermoplastic abrasive blasting material
FR2633706A1 (en) * 1988-06-29 1990-01-05 Anhydride Carbonique Ind SOLID CARBON DIOXIDE PRODUCT, PACKAGING DEVICE AND PACKAGING METHOD OF THE PRODUCT

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301237A (en) * 1993-07-14 1995-02-01 Harko Bv Method for treating surfaces with cryogenic particles
NL1013692C2 (en) * 1999-11-29 2001-05-30 Huibert Konings Method for manufacturing cryogenic particles from liquid carbonic acid.
WO2001038221A1 (en) * 1999-11-29 2001-05-31 Huibert Konings Method for producing cryogenic particles from fluid carbon dioxide
CN105584087A (en) * 2015-12-23 2016-05-18 格薪源生物质燃料有限公司 Vertical ring die biomass fuel briquetting forming machine

Also Published As

Publication number Publication date
AU9048191A (en) 1992-06-25
JPH06502800A (en) 1994-03-31
NL9002605A (en) 1992-06-16
EP0559747A1 (en) 1993-09-15

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