GR1003651B - Oscilating grid of chords - Google Patents
Oscilating grid of chordsInfo
- Publication number
- GR1003651B GR1003651B GR20000100251A GR2000100251A GR1003651B GR 1003651 B GR1003651 B GR 1003651B GR 20000100251 A GR20000100251 A GR 20000100251A GR 2000100251 A GR2000100251 A GR 2000100251A GR 1003651 B GR1003651 B GR 1003651B
- Authority
- GR
- Greece
- Prior art keywords
- chords
- materials
- oscillating grid
- size
- grid
- Prior art date
Links
- 239000000463 material Substances 0.000 abstract 4
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000000571 coke Substances 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The oscillating grid of chords consists of parallel steel chords which are fixed on one end with a combination of electro-welding and polyurethane injection. The desired cut-off size determines the distance between the chords. Two adjacent chords have a different length so as to achieve a different equation and oscillation range. In this manner, blocking of the aperture between the chords is avoided.The oscillating grid of chords achieves a very high degree of sieving (98-99 %) and very high capacity (16 tones per sq. meter per hour). Losses are relatively high and concern sizes near the cut-off size. The increased losses stem from the design of the oscillating grid.The oscillating grid of chords is not blocked if the critical level of moisture content of 15 % is not exceeded; under this level the system is self-cleaned.The oscillating grid of chords is suitable for mining materials, quarrying materials, coke etc. and in general all materials that are difficult to sieve (colloid materials and high moisture contents).The diameter of the chords is determined by the size distribution of the feed and the distance of the chords is determined by the desired cut-off size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR20000100251A GR1003651B (en) | 2000-07-25 | 2000-07-25 | Oscilating grid of chords |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GR20000100251A GR1003651B (en) | 2000-07-25 | 2000-07-25 | Oscilating grid of chords |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GR1003651B true GR1003651B (en) | 2001-08-30 |
Family
ID=10944339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GR20000100251A GR1003651B (en) | 2000-07-25 | 2000-07-25 | Oscilating grid of chords |
Country Status (1)
| Country | Link |
|---|---|
| GR (1) | GR1003651B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4361240A (en) * | 1980-11-21 | 1982-11-30 | Midwestern Industries, Inc. | Material separating machine |
| GB2247850A (en) * | 1990-08-24 | 1992-03-18 | Shattock Ltd | A screen |
| EP0631825A1 (en) * | 1993-06-30 | 1995-01-04 | SBM WAGENEDER Gesellschaft m.b.H. | Finger-sieve |
| US5816412A (en) * | 1996-04-02 | 1998-10-06 | Western Wire Works, Inc. | Screening systems and methods for screening particulate material |
-
2000
- 2000-07-25 GR GR20000100251A patent/GR1003651B/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4361240A (en) * | 1980-11-21 | 1982-11-30 | Midwestern Industries, Inc. | Material separating machine |
| GB2247850A (en) * | 1990-08-24 | 1992-03-18 | Shattock Ltd | A screen |
| EP0631825A1 (en) * | 1993-06-30 | 1995-01-04 | SBM WAGENEDER Gesellschaft m.b.H. | Finger-sieve |
| US5816412A (en) * | 1996-04-02 | 1998-10-06 | Western Wire Works, Inc. | Screening systems and methods for screening particulate material |
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