US2124856A - Disk roller classifying grate for coal - Google Patents
Disk roller classifying grate for coal Download PDFInfo
- Publication number
- US2124856A US2124856A US68333A US6833336A US2124856A US 2124856 A US2124856 A US 2124856A US 68333 A US68333 A US 68333A US 6833336 A US6833336 A US 6833336A US 2124856 A US2124856 A US 2124856A
- Authority
- US
- United States
- Prior art keywords
- grate
- disks
- coal
- disk
- disk roller
- 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 - Lifetime
Links
- 239000003245 coal Substances 0.000 title description 8
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010011416 Croup infectious Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
- B07B1/14—Roller screens
- B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
Definitions
- the subject of this invention is a disk roller classifying grate for coal, which is particularly suited for the simultaneous sifting off of shale in the form of flat lumps.
- a sifting off of the shale in the form of fiat lumps did not take place, so that the pieces of shale travelled over the grate and passed into the overflow together with the coarse coal, from which they had to be removed subsequently by sorting.
- a falling through of the shale corresponding to the grain size of the coal in each case, takes place at the same time as the classification of the coal according to its grain size. The pieces of shale are then separated off in the subsequent screening of the individual sorts of coal.
- the grate according to the invention is subdivided into a plurality of grate parts arranged in the form .of steps with respect to one another, the object of this being to render it possible to vary the speed the disk rollers and consequently the conveying speed of the grate surface at the individual parts of the grate.
- the disk rollers are intended to rotate at a speed decreasing from one part of the grate to the next in the conveying direction.
- This form of the disks is particularly favourable for the sifting off of flat pieces, because in this way the pieces are brought into the upright position, which alone enables them to fall through the gaps in the grate.
- the bringing of the fiat pieces into the upright position and their falling through is, moreover, assisted by the reduction of the speed of rotation in the conveying direction, that is, by driving the disks in the last part of the grate at a slower speed than those in the first part of the grate.
- the larger pieces are more slowly brought into the upright position without being thrown off by the disks, and thus have sufiicient time to slip through the transverse gaps.
- Figure 1 represents in vertical longitudinal section the supply and discharge ends of the individual grate parts of a three-stage disk roller classifying grate
- Figure 3 represents a section on the line AB in Figure 2.
- the distances between the consecutive disk rollers are increased in the conveying direction to permit pieces of shale of continuously increasing size to fall through these transverse gaps.
- the longitudinal gaps lying in the conveying direction may also become larger in this direction with the transverse gaps, so that, according to the size of the pieces of shale falling through, a sorting of the coal according to the grain size also takes place.
- the longitudinal gaps are, in the constructional example, increased in size by reduction of the width of the disks 4, as illustrated, for example, on the left in Figure 2 in the case of two consecutive disk rollers.
Landscapes
- Combined Means For Separation Of Solids (AREA)
Description
July 26, 1938. KQHLER 2,124,856
DISK ROLLER CLASSIFYING GRATE FOR COAL Filed March 11, 1956 INYENTOR Heinrich Kb'h/er by His ATTORNEYS a Patented July 26, 1938 UNITED STATES DISK ROLLER CLASSIFYING GRATE FOR COAL Heinrich Kiihler, Gr.
Ottersleben- Georgshohe,
Germany, assignor to the firm Fried. Krupp Grusonwerk Aktiengesellschaft, Magdeburg- Buckau, Germany Application March 11,
In Germany 2 Claims.
The subject of this invention is a disk roller classifying grate for coal, which is particularly suited for the simultaneous sifting off of shale in the form of flat lumps. In the disk roller classi- 5 fying grates used heretofore, a sifting off of the shale in the form of fiat lumps did not take place, so that the pieces of shale travelled over the grate and passed into the overflow together with the coarse coal, from which they had to be removed subsequently by sorting. In the case of the improved grate a falling through of the shale, corresponding to the grain size of the coal in each case, takes place at the same time as the classification of the coal according to its grain size. The pieces of shale are then separated off in the subsequent screening of the individual sorts of coal.
The grate according to the invention is subdivided into a plurality of grate parts arranged in the form .of steps with respect to one another, the object of this being to render it possible to vary the speed the disk rollers and consequently the conveying speed of the grate surface at the individual parts of the grate. The disk rollers are intended to rotate at a speed decreasing from one part of the grate to the next in the conveying direction.
The longitudinal and transverse gaps Widen in the conveying direction, while the disks of the disk rollers are constructed in the manner known per se as three-arc disks. This form of the disks is particularly favourable for the sifting off of flat pieces, because in this way the pieces are brought into the upright position, which alone enables them to fall through the gaps in the grate. The bringing of the fiat pieces into the upright position and their falling through (the largest pieces falling through on the last part of the grate) is, moreover, assisted by the reduction of the speed of rotation in the conveying direction, that is, by driving the disks in the last part of the grate at a slower speed than those in the first part of the grate. The larger pieces are more slowly brought into the upright position without being thrown off by the disks, and thus have sufiicient time to slip through the transverse gaps.
In order to achieve a perfect conveyance of the material on the last part of the grate, which acts as a coarse grate, between each pair of three-arc disks an intermediate member is mounted on the disk shaft, this intermediate member also having a three-arc cross-section, while its circumference extends parallel to the circumference of the grate disks.
1936, Serial No. 8,333 March 1935 The jamming of material betweenthe disks is prevented by scraping-off devices, which are supported with their upper ends generally against round intermediate rings which determine the distance from disk to disk of the same disk roller. In the coarse grate, the upper ends of the scraping-off devices engage in circular grooves of the three-arc intermediate members.
In order that the said invention may be clearly understood and readily carried into effect, the same will now be more fully described with reference to the accompanying drawing, wherein:
Figure 1 represents in vertical longitudinal section the supply and discharge ends of the individual grate parts of a three-stage disk roller classifying grate,
Figure 2 is a plan of the last part of the grate forming the coarse grate, on a larger scale, and
Figure 3 represents a section on the line AB in Figure 2.
The parts I, 2, and 3 of the disk roller grate are arranged in the form of steps relatively to one another. All the disk rollers consist of three-arc disks 4, the distance apart of which is determined by intermediate members. The intermediate members 5 of the grate parts I and 2 are made annular, while the intermediate members 6 of the grate part 3 have a three-arc crosssection. The angular position of the intermediate members 6 corresponds to the position of the disks 4, the intermediate members for forming the longitudinal gaps merely being smaller than the said disks. Preferably, the intermediate members 5 of the grade parts I and 2 also have a three-arc cross-section. The disk rollers are driven at a speed of rotation which decreases from one part of the grate to the next.
The distances between the consecutive disk rollers, that is, the gaps l lying transversely with respect to the conveying direction, are increased in the conveying direction to permit pieces of shale of continuously increasing size to fall through these transverse gaps. The longitudinal gaps lying in the conveying direction may also become larger in this direction with the transverse gaps, so that, according to the size of the pieces of shale falling through, a sorting of the coal according to the grain size also takes place. The longitudinal gaps are, in the constructional example, increased in size by reduction of the width of the disks 4, as illustrated, for example, on the left in Figure 2 in the case of two consecutive disk rollers. In the conveying direction, the centre planes of the disks of the same part of the grate moving one behind the other lie in a common vertical plane. In this way the maintenance of uniform transverse gaps over the entire width of the grate is rendered possible. The size of the disks 4 may also decrease in the conveying direction for the purpose of increasing the size of the transverse gaps. In the grate part 3, each second disk 4' of the last rollers is made smaller, whereby the gap for the passage of coal and shale is increased.
The scraping-off devices 8 are made as narrow diate members 6 are provided with annular grooves 9.
What I claim is:
1. In a disk roller classifying grate, a plurality of rollers transverse to the conveying direction of the grate, each comprising a row of spaced threearc disks, the distances between the peripheries of the disks of adjacent rollers and the distances between the disks on the same roller both increasing in the conveying direction of the grate.
2. In a disk roller classifying grate; a plurality of rollers transverse to the conveying direction of the grate, said rollers being arranged in stepped groups, each roller comprising a row of spaced three-arc disks, the distances between the periphcries of the disks of adjacent rollers and the distances between the disks on the same roller both increasing in the conveying direction of the grate, and means for driving the respective groups of rollers at progressively slower speeds in the c0nveying direction of the grate.
HEINRICH KCI-ILER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2124856X | 1935-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2124856A true US2124856A (en) | 1938-07-26 |
Family
ID=7986116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US68333A Expired - Lifetime US2124856A (en) | 1935-03-18 | 1936-03-11 | Disk roller classifying grate for coal |
Country Status (1)
Country | Link |
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US (1) | US2124856A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3265206A (en) * | 1963-09-11 | 1966-08-09 | Kenneth M Allen | Potato chip sorter |
US4836388A (en) * | 1988-04-27 | 1989-06-06 | Beloit Corporation | Apparatus for separating material by length |
US5108589A (en) * | 1989-03-01 | 1992-04-28 | General Kinematics Corporation | Material separating apparatus |
WO1995035168A1 (en) * | 1994-06-22 | 1995-12-28 | Bulk Handling Systems, Inc. | Method and apparatus for classifying materials |
USRE35331E (en) * | 1991-05-13 | 1996-09-24 | General Kinematics Corporation | Material separating apparatus |
US5960964A (en) * | 1996-05-24 | 1999-10-05 | Bulk Handling, Inc. | Method and apparatus for sorting recycled material |
EP0773070B2 (en) † | 1996-09-18 | 2002-07-24 | Machinefabriek Bollegraaf Appingedam B.V. | A waste paper sorting conveyor for sorting waste paper from waste cardboard |
US6702104B2 (en) | 2000-04-18 | 2004-03-09 | Machinefabriek Bollegraaf Appingedam B.V. | Conveyor for conveying bulk material |
US20070227953A1 (en) * | 2004-05-20 | 2007-10-04 | Paron Fabio L | Machine for the Classification, Sieving and Separation of Non-Homogeneous Masses to Materials |
US20090152173A1 (en) * | 2007-12-18 | 2009-06-18 | Bulk Handling Systems, Inc. | Separation system for recyclable material |
US20090300935A1 (en) * | 2005-04-29 | 2009-12-10 | Fabio Paron | Chamber dryer with uniform treatment parameters |
US20100282647A1 (en) * | 2006-11-03 | 2010-11-11 | Emerging Acquisitions, Llc | Electrostatic material separator |
US20100288680A1 (en) * | 2009-05-14 | 2010-11-18 | Emerging Acquisitions, Inc. | Heating system for material processing screen |
US20160129476A1 (en) * | 2014-11-07 | 2016-05-12 | Günther Holding GmbH & Co. KG | Screen device comprising screen rollers for preventing oversize grain from jamming |
US10111385B2 (en) | 2016-06-24 | 2018-10-30 | Jackrabbit | Nut harvester with separating disks |
US11432463B2 (en) | 2019-02-08 | 2022-09-06 | Jackrabbit, Inc. | Nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester |
-
1936
- 1936-03-11 US US68333A patent/US2124856A/en not_active Expired - Lifetime
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3265206A (en) * | 1963-09-11 | 1966-08-09 | Kenneth M Allen | Potato chip sorter |
US4836388A (en) * | 1988-04-27 | 1989-06-06 | Beloit Corporation | Apparatus for separating material by length |
US5108589A (en) * | 1989-03-01 | 1992-04-28 | General Kinematics Corporation | Material separating apparatus |
USRE35331E (en) * | 1991-05-13 | 1996-09-24 | General Kinematics Corporation | Material separating apparatus |
WO1995035168A1 (en) * | 1994-06-22 | 1995-12-28 | Bulk Handling Systems, Inc. | Method and apparatus for classifying materials |
US5799801A (en) * | 1994-06-22 | 1998-09-01 | Bulk Handling System, Inc. | Method and apparatus for separating paper from cardboard |
US5960964A (en) * | 1996-05-24 | 1999-10-05 | Bulk Handling, Inc. | Method and apparatus for sorting recycled material |
US6371305B1 (en) * | 1996-05-24 | 2002-04-16 | Bulk Handling Systems, Inc. | Method and apparatus for sorting recycled material |
EP0773070B2 (en) † | 1996-09-18 | 2002-07-24 | Machinefabriek Bollegraaf Appingedam B.V. | A waste paper sorting conveyor for sorting waste paper from waste cardboard |
US6149018A (en) * | 1996-12-18 | 2000-11-21 | Bulk Handling Systems, Inc. | Method and apparatus for sorting recycled material |
US6702104B2 (en) | 2000-04-18 | 2004-03-09 | Machinefabriek Bollegraaf Appingedam B.V. | Conveyor for conveying bulk material |
US20070227953A1 (en) * | 2004-05-20 | 2007-10-04 | Paron Fabio L | Machine for the Classification, Sieving and Separation of Non-Homogeneous Masses to Materials |
US20090300935A1 (en) * | 2005-04-29 | 2009-12-10 | Fabio Paron | Chamber dryer with uniform treatment parameters |
US20100282647A1 (en) * | 2006-11-03 | 2010-11-11 | Emerging Acquisitions, Llc | Electrostatic material separator |
US8307987B2 (en) | 2006-11-03 | 2012-11-13 | Emerging Acquisitions, Llc | Electrostatic material separator |
US20090152173A1 (en) * | 2007-12-18 | 2009-06-18 | Bulk Handling Systems, Inc. | Separation system for recyclable material |
US8618432B2 (en) | 2007-12-18 | 2013-12-31 | Emerging Acquisitions, Llc | Separation system for recyclable material |
US20100288680A1 (en) * | 2009-05-14 | 2010-11-18 | Emerging Acquisitions, Inc. | Heating system for material processing screen |
US8336714B2 (en) | 2009-05-14 | 2012-12-25 | Emerging Acquistions, LLC | Heating system for material processing screen |
US20160129476A1 (en) * | 2014-11-07 | 2016-05-12 | Günther Holding GmbH & Co. KG | Screen device comprising screen rollers for preventing oversize grain from jamming |
US9731326B2 (en) * | 2014-11-07 | 2017-08-15 | Günther Holding GmbH & Co. KG | Screen device comprising screen rollers for preventing oversize grain from jamming |
US10111385B2 (en) | 2016-06-24 | 2018-10-30 | Jackrabbit | Nut harvester with separating disks |
US11432463B2 (en) | 2019-02-08 | 2022-09-06 | Jackrabbit, Inc. | Nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester |
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