CA1120896A - Lightweight tramp iron idler roller with axially spaced magnetic flux concentrations - Google Patents
Lightweight tramp iron idler roller with axially spaced magnetic flux concentrationsInfo
- Publication number
- CA1120896A CA1120896A CA000301373A CA301373A CA1120896A CA 1120896 A CA1120896 A CA 1120896A CA 000301373 A CA000301373 A CA 000301373A CA 301373 A CA301373 A CA 301373A CA 1120896 A CA1120896 A CA 1120896A
- Authority
- CA
- Canada
- Prior art keywords
- idler
- plates
- bars
- tramp iron
- magnet
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces
Landscapes
- General Preparation And Processing Of Foods (AREA)
Abstract
TRAMP IRON IDLER
ABSTRACT
A tramp iron idler roller for use on conveyors in food and chemical processing industries embodies a rotatable cylinder carrying high intensity magnet bar structures of the invention each comprising axially spaced apart permanent magnets supported within axial flux bars, such magnet bars being circumferentially spaced within a confining non-magnetic tube or shell.
ABSTRACT
A tramp iron idler roller for use on conveyors in food and chemical processing industries embodies a rotatable cylinder carrying high intensity magnet bar structures of the invention each comprising axially spaced apart permanent magnets supported within axial flux bars, such magnet bars being circumferentially spaced within a confining non-magnetic tube or shell.
Description
-`~`` 112~)8~
Background of the Invention The tramp idler conveyor roller of the invention is characterized by high intensity magnet bars parallel to the axis of a rotatable cylindrical carrier and enclosed by a non-magnetic shell or tube each of said bars being in the form of two continuous magnetizeable strips separated by axially spaced apart permanent magnet elements of high intensity.
The Prior Art The conventional tramp iron idler provides permanent magnet 10. bars which are of continuous lengths and radially magnetized.
General Description of the Invention ~cc,o ~rd i~
~ to the invention a magnet bar for a tramp iron idler `` roller is formed by mounting transversely oriented magnets in axial spaced apart relation between two ferrous flux plates one of which forms a south pole and the other of which forms a north pole for said bar. The bars are mounted on a non-magnetic rotatable inner core in such manner~that each flux plate is spaced circumferentially from the next flux plate like poles preferrably being nearest between said bars. The magnet bars may be enclosed by a non-magnetic-tube 20. or sheath in such manner as to contain suitable packing between the magnet bars sheath and the inner core.
General Description of the Drawings In the drawings, showing a preferred structure according to the invention:
Figure 1 is a transverse sectional view of a tramp iron idler according to the invention Figure 2 is a perspective view of a typical magnet bar according to the invention Figure 3 is a longitudinal section of the tramp idler 30. of Figure 1 08g6 Figure 4 illustrates the use of the idler of the invention l)etailed Description of the Invention The tramp iron idler 10 of the invention comprises the non-magnetic core assembly 11 preferrably having an inner non-magnetic shell or tube 12 separating non-magnetic stepped end walls 13 and connected by a nonAmagnetic rod 14 fastened to flanged stud shaft 15 centered in said end walls and holding same in assembly with said inner shell.
10. Magnet bars 16, the number of which will be an even number for the present invention, each comprise north and south flux plates 17 of ferrous material such as mild steel. Between a pair of flux plates 17 are provided longitudinal (i.e. axially) spaced apart high intensity permanent magnet elements 18 all oriented with their same polarities transversely of bar 16. The flux plates 17 permit fewer magnets to be employed within a magnet bar.
The magnet bar structures 16 are mounted in circumferential equidistant spacing on core assembly 11 as indicated in Figure 1 in alternate polarity arrangement thus to intensify the field effect 20. outwardly rather than to draw same toward core 11.
- An outer shell 19 in the form of a suitable plastic tube 20 (said tubes 12 and 20 being purposely shown in unhatched section for clarity) or other non-magnetic shell encloses the magnet bars ~- 16 between end flanges 21 of end walls 12. The spaces 22 between the magnet bars 16, inner core 11 and shell 19 are preferrably filled with a suitable material 23 such as wood ~partially indicated) or a foamed polystyrene.
As indicated in Figure 4 the tramp iron roller idler 10 of the invention may support a feed belt 24 for delivery of, say, a 30. granulated food product 25 by path 26 to receiving belt 27 while the magnet bars of idler 10 cause tramp iron particles and pieces to be discarded by path 29.
Each permanent magnet 17 is preferrably formed of a stacked array or cluster of separate magnet plates 30 as for example high intensity magnetized ceramic ferrite magnets similarly oriented to provide a combined transverse or circumferential polarity orientation for said plates.
10 .
20.
30.
~,
Background of the Invention The tramp idler conveyor roller of the invention is characterized by high intensity magnet bars parallel to the axis of a rotatable cylindrical carrier and enclosed by a non-magnetic shell or tube each of said bars being in the form of two continuous magnetizeable strips separated by axially spaced apart permanent magnet elements of high intensity.
The Prior Art The conventional tramp iron idler provides permanent magnet 10. bars which are of continuous lengths and radially magnetized.
General Description of the Invention ~cc,o ~rd i~
~ to the invention a magnet bar for a tramp iron idler `` roller is formed by mounting transversely oriented magnets in axial spaced apart relation between two ferrous flux plates one of which forms a south pole and the other of which forms a north pole for said bar. The bars are mounted on a non-magnetic rotatable inner core in such manner~that each flux plate is spaced circumferentially from the next flux plate like poles preferrably being nearest between said bars. The magnet bars may be enclosed by a non-magnetic-tube 20. or sheath in such manner as to contain suitable packing between the magnet bars sheath and the inner core.
General Description of the Drawings In the drawings, showing a preferred structure according to the invention:
Figure 1 is a transverse sectional view of a tramp iron idler according to the invention Figure 2 is a perspective view of a typical magnet bar according to the invention Figure 3 is a longitudinal section of the tramp idler 30. of Figure 1 08g6 Figure 4 illustrates the use of the idler of the invention l)etailed Description of the Invention The tramp iron idler 10 of the invention comprises the non-magnetic core assembly 11 preferrably having an inner non-magnetic shell or tube 12 separating non-magnetic stepped end walls 13 and connected by a nonAmagnetic rod 14 fastened to flanged stud shaft 15 centered in said end walls and holding same in assembly with said inner shell.
10. Magnet bars 16, the number of which will be an even number for the present invention, each comprise north and south flux plates 17 of ferrous material such as mild steel. Between a pair of flux plates 17 are provided longitudinal (i.e. axially) spaced apart high intensity permanent magnet elements 18 all oriented with their same polarities transversely of bar 16. The flux plates 17 permit fewer magnets to be employed within a magnet bar.
The magnet bar structures 16 are mounted in circumferential equidistant spacing on core assembly 11 as indicated in Figure 1 in alternate polarity arrangement thus to intensify the field effect 20. outwardly rather than to draw same toward core 11.
- An outer shell 19 in the form of a suitable plastic tube 20 (said tubes 12 and 20 being purposely shown in unhatched section for clarity) or other non-magnetic shell encloses the magnet bars ~- 16 between end flanges 21 of end walls 12. The spaces 22 between the magnet bars 16, inner core 11 and shell 19 are preferrably filled with a suitable material 23 such as wood ~partially indicated) or a foamed polystyrene.
As indicated in Figure 4 the tramp iron roller idler 10 of the invention may support a feed belt 24 for delivery of, say, a 30. granulated food product 25 by path 26 to receiving belt 27 while the magnet bars of idler 10 cause tramp iron particles and pieces to be discarded by path 29.
Each permanent magnet 17 is preferrably formed of a stacked array or cluster of separate magnet plates 30 as for example high intensity magnetized ceramic ferrite magnets similarly oriented to provide a combined transverse or circumferential polarity orientation for said plates.
10 .
20.
30.
~,
Claims (4)
1. A tramp iron conveyor idler comprising: a supporting non-magnetic inner core assembly having axial shaft ends; an even number of magnet bars on said core, each of said bars comprising:
two longitudinally extending circumferentially parallelly spaced apart ferrous flux plates; a plurality of permanent magnets of similarly oriented polarity between said plates and spaced apart longitudinally of said plates; and a non-magnetic material retaining said magnet bars in longitudinal axial alignment on said roller and equally spaced apart circumferentially.
two longitudinally extending circumferentially parallelly spaced apart ferrous flux plates; a plurality of permanent magnets of similarly oriented polarity between said plates and spaced apart longitudinally of said plates; and a non-magnetic material retaining said magnet bars in longitudinal axial alignment on said roller and equally spaced apart circumferentially.
2. The idler of claim 1 in which each permanent magnet is in the form of a cluster of high intensity magnetized ceramic ferrite plates similarly oriented to provide a combined transverse polarity orientation for said flux plates.
3. The idler of claim 1 in which the material of said inner core is the same as said non-magnetic material.
4. The idler of claim 1 in which the flux plates of adjacent magnet bars are of the opposite polarity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000301373A CA1120896A (en) | 1978-04-18 | 1978-04-18 | Lightweight tramp iron idler roller with axially spaced magnetic flux concentrations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000301373A CA1120896A (en) | 1978-04-18 | 1978-04-18 | Lightweight tramp iron idler roller with axially spaced magnetic flux concentrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1120896A true CA1120896A (en) | 1982-03-30 |
Family
ID=4111273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000301373A Expired CA1120896A (en) | 1978-04-18 | 1978-04-18 | Lightweight tramp iron idler roller with axially spaced magnetic flux concentrations |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1120896A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934100A (en) * | 2014-04-30 | 2014-07-23 | 大丰市众鑫永磁材料有限公司 | Preferment strong magnetic separation machine |
| CN111559629A (en) * | 2019-12-26 | 2020-08-21 | 立宇食品（郎溪）有限公司 | Food conveyer with magnetic force edulcoration function |
-
1978
- 1978-04-18 CA CA000301373A patent/CA1120896A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934100A (en) * | 2014-04-30 | 2014-07-23 | 大丰市众鑫永磁材料有限公司 | Preferment strong magnetic separation machine |
| CN111559629A (en) * | 2019-12-26 | 2020-08-21 | 立宇食品（郎溪）有限公司 | Food conveyer with magnetic force edulcoration function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |