AU2018101375A4 - Device for sampling material from moving belt conveyor - Google Patents
Device for sampling material from moving belt conveyor Download PDFInfo
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- AU2018101375A4 AU2018101375A4 AU2018101375A AU2018101375A AU2018101375A4 AU 2018101375 A4 AU2018101375 A4 AU 2018101375A4 AU 2018101375 A AU2018101375 A AU 2018101375A AU 2018101375 A AU2018101375 A AU 2018101375A AU 2018101375 A4 AU2018101375 A4 AU 2018101375A4
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- base plate
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- fluid
- controller
- scraper
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Abstract
A device for sampling material from a moving belt conveyor for use in an ore sampling 5 process. The device comprising a base plate and a counter-weighted rotary cutter and support frame. The base plate disposed between the belt and its supporting conveyor structure, the rotary cutter and drive unit is disposed above the belt on said support frame. In use therotating cutter rotates substantially perpendicular to the material flow above said moving belt conveyor travelling over the base plate unit, a rubber scraper fitted to said rotary cutter contacts the 10 moving belt and as sample material is extracted from the moving belt during this rotation and is discharged into a sample discharge chute adjacent the base plate, wherein the device has fluid supply operably connected to a fluid delivery means for cleaning said scraper and said base plate. T.K.O. Engineering AU Sampler/FP 180918 "/7 lpp U',
Description
TECHNICAL FIELD
This invention relates to a device for sampling material from a moving belt conveyor. In particular the present invention is described with reference to a device used for sampling ore from a silo conveyor belt.
BACKGROUND
It is known to carry out an ore sampling process which includes the steps of a Go-Belt Sampler™, being a type of cross-belt sampler device, cutting a sample of ore from a particular io stream of the ore, feeding the ore to a jaw crusher, comminuting (reducing in size) the sample ore particles with the crusher, and feeding the communited ore particles from the jaw crusher to a secondary crusher for further comminution. Typically the process includes the step of feeding the further comminuted ore particles from the secondary crusher to a rotary splitter and extracting the ore particle sample for analysis from the splitter.
A Go-Belt Sampler™ is designed to take a predetermined ore sample off a moving conveyor belt against the flow. The ore being sampled may for example be any ore type such as gold, platinum, silver, copper, chrome or coal. The known Go-Belt Sampler™ comprises a base plate, a counter-weighted rotary cutter, drive unit and support frame. The base plate is disposed between the belt and the conveyor structure, such that in use the belt travels over the base plate. The rotary cutter is disposed above the belt and rotates about an axis parallel to the axial direction (or direction of travel) of the belt. By means of the drive unit, the rotating counter-weighed rotary cutter moves in a three hundred and sixty degree rotation perpendicular to the material flow above the conveyor belt. Sample material is extracted from the moving conveyor belt during this rotation and is then released into the sample discharge chute, which is fed to an ore crusher via a vibrating screen. The rotary cutter is provided with a rubber scraper that contacts the belt and sample material during the taking of the sample.
Whilst the known Go-Belt Sampler™ is an effective way of an obtaining a sample from a moving belt conveyor, one disadvantage of the abovementioned sampler device, is that ore material, and particularly ore fines, can remain or build up on or near the scraper of the rotary cutter and the edge of the base plate. Remaining or built up ore material from previous rotations of the rotary cutter can contaminate future samples being taken. In effect, ore T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018 material remaining or built up at or near the scraper and on the base plate can impact the sampling process. This remaining or built up material on the scraper and base plate can be significant, particularly when there is moisture present in the ore material. The building up of material over time on or near the scraper and base plate, means that regular maintenance of the
Go-Belt Sampler™ is required to remove the built up ore material. This may result in the mine operator losing valuable production time and grade losses through each phase of the sampling process.
The present invention is to provide an device for sampling material from a moving belt conveyor that overcomes at least one of the problems associated with the prior art.
SUMMARY OF INVENTION
In a first aspect the present invention consists of a device for sampling material from a moving belt conveyor for use in an ore sampling process, said device comprising a base plate and a counter-weighted rotary cutter and support frame, said base plate disposed between said belt and its supporting conveyor structure, said rotary cutter and drive unit is disposed above said belt on said support frame, in use said rotating cutter rotates substantially perpendicular to the material flow above said moving belt conveyor travelling over said base plate unit, a rubber scraper fitted to said rotary cutter contacts said moving belt and as sample material is extracted from said moving belt during this rotation and is discharged into a sample discharge chute adjacent said base plate, wherein said device has fluid supply operably connected to a fluid delivery means for cleaning said scraper and said base plate.
Preferably said fluid delivery means for cleaning includes a first fluid-jet unit disposed near said rubber scraper and a second fluid-jet unit disposed near an edge of said base plate adjacent said discharge chute.
Preferably said first fluid-jet unit includes a first set of nozzles disposed at spaced intervals thereon and directed towards said rubber scraper, said second fluid-jet unit includes a second set of nozzles disposed at spaced intervals thereon and directed towards said edge of said base plate.
Preferably said device includes a controller for controlling fluid delivery to said nozzles.
T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018
Preferably in one embodiment said fluid supply is a compressed air supply, and said first set of nozzles and second set of nozzles deliver air for impingement on said respective scraper and base plate.
Preferably in another embodiment said fluid supply is a pressurised water supply, and said first 5 set of nozzles and second set of nozzles deliver pressurised water for impingement on said respective scraper and base plate.
Preferably at least a first sensor is fitted to said device for monitoring the presence of sample material in the vicinity of said discharge area between said base plate and said discharge chute, said first sensor operably connected to said controller.
io Preferably said controller is a program logic controller or computer controller.
Preferably said controller is wirelessly connected to a monitoring computer for monitoring data received from said controller.
BRIEF DESCRIPTION OF DRAWINGS
Fig. 1 is a perspective view of an embodiment of a device for sampling material from a moving belt conveyor in accordance with the present invention.
Fig. 2 is an enlarged perspective view of the base plate unit of the device shown in Fig. 1, that is disposed between the belt and conveyor structure.
Fig. 3 is an enlarged perspective view of the rotary cutter of the device shown in Fig. 1, that is 20 disposed above the belt and base plate unit.
Fig. 4 is an enlarged end view of the scraper, cradle and first air-jet unit mounted on the rotary cutter shown in Fig. 3.
Fig. 5. is an enlarged perspective view of the scraper, cradle and first air-jet unit shown in Fig.
4.
Fig. 6 is an enlarged perspective view of the second air-jet unit mounted on base plate unit 2 shown in Fig. 2.
T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018
Fig. 7 is a schematic of the controller used to actuate the air delivery to the nozzles of first and second air-jet units depicted in Figs 5 and 6.
BEST MODE OF CARRYING OUT THE INVENTION
An embodiment of the present invention will now be described with Figs. 1 to 7.
Device 1 is for sampling material from a moving belt conveyor (not shown) against the flow, and can be referred to as “a cross belt sampler” and is typically disposed within a silo structure (not shown) . Device 1 comprises a base plate unit 2, a rotary cutter 3, a drive unit 4 and support frame 5. Rotary cutter 3 is shrouded by an upper cover guard 8.
io Base plate unit 2 is disposed between the belt and the conveyor structure, such that in use the belt travels thereover. Base plate unit 2 has base frame 55, central area 56, rubber impact rollers 57, belt tracking idlers 58 and idler inspection holes 59.
Rotary cutter 3 and drive unit 4 are supported by support frame 5 and disposed above the belt. Drive unit 4 comprises a drive motor 15 coupled to a cutter shaft 16 of rotary cutter 3 via a coupling 17.
Rotary cutter 3 comprises a counter weight 6, typically of about 250kg and rotates about an axis X parallel to the travel direction of the moving belt by means of drive unit 4. As such rotary cutter 3 moves in a three hundred and sixty degree rotation perpendicular to the material flow above moving belt. Sample material is extracted from the moving conveyor belt directly above central area 56 of base plate unit 2 during this rotation, and is then released into the sample discharge chute 7, which is fed to an ore crusher (not shown) via a vibrating screen (not shown).
Rotary cutter 3 as shown in Fig. 3, comprises an adjustable impact liner plate 31, two adjustable cutter blades 32 disposed at opposite sides of impact liner plate 31, and a scraper 33 disposed on the lower portion of impact liner plate 31. Scraper 33 is preferably made of “60 Shaw” latex rubber.
A first air jet unit 40 is disposed on rotary cutter 3 adjacent scraper 33 via adjustable cradle 41. First air-jet unit 40 includes an air inlet 42 fluidally connected to gallery 43 that in turn is fluidally connected to a plurality of nozzles 44. In use the air inlet 42 is connected to a compressed air supply 45 which is able to deliver air at about 10 bar (145 psi). Nozzles 44 are
T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018 disposed so that air delivered in a jet-like manner via them impinges on scraper 33. Compressed air may be delivered from air supply 45 via an fluid delivery system passing into cutter shaft 16 via air inlet 60. The air fluid delivery system includes a pipe (or hose) 61 that interconnects with air inlet 42 of first air-jet unit 40.
When sample material is extracted from the moving belt by rotary cutter 3 to be released into the sample discharge chute 7, any sample material remaining on scraper 33 is removed by the air delivered via nozzles 44. This ensures that the sample material on scraper 33 is captured in the system for grade testing, whiles keeping the cutting area free of fine ore so that no build up occurs on scraper 33.
io A second air-jet unit 46 is disposed near the edge of base plate 2 nearest discharge chute 7. Second air-jet unit 46 includes an air inlet 47 fluidally connected to gallery 48 that in turn is fluidally connected to plurality of nozzles 49. In use air inlet 47 is also connected to compressed air supply 45. Nozzles 49 are disposed so that air delivered in a jet-like manner via them impinges on the area in and around the edge of base plate 2, so it is blown towards discharge chute 7. This is to ensure that once a sample has been taken during the sample taking operation, any ore usually left on base plate 2 is removed. This helps to gain the best grading of the sample during each cycle and keeping device 1 clean.
The first and second air-jet units 40, 46 in this embodiment are operably connected to controller 50. A “cutter position” cam 51 disposed on cutter shaft 16 is used to activate first and second air-jet units 40, 46 via a cam position reader 58 operably connected to controller 50, at the appropriate position during the rotation of rotary cutter 3. Each time rotary cutter 3 is used to take a sample, jet streams of air are used to dislodge ore fines from scraper 3 and base plate 2. In use, the compressed air is delivered via nozzles 44,49 immediately after scraper 3 has disengaged the belt and moved away from plate 2, so that it impinges on scraper 3 and base plate 2. Not only does this ensure that ore fines do not remain on scraper 3 and base plate 2 during sample taking that could otherwise contaminate later sample taking, the removed ore fines means that material build is eliminated or at least minimized. This reduces cleaning required during maintenance down time.
Controller 50 may also be preferably to connected to plurality of sensors 52 in around the “discharge area” near the edge of base plate 2 and discharge chute 7, to detect whether sample material is building up in that area. If so the amount of compressed air being delivered via nozzles 44,49 may be variably adjusted automatically to ensure this build up is eliminated or T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018 minimized, and if it persists the performance of device 1 may be examined by technical support or mines operation personnel.
Controller 50 may be a program logic controller or CPU controller, and the sensed data received via controller 50 is preferably communicated via a wireless computer network (not shown) to a monitoring computer/system (not shown). For example if the data received via the monitoring computer/system detects a fault with the operation of device 1, an sms text message or email can be sent via a telecommunication system to the smartphones or other telecommunication devices of the technical support team or mines operations personnel alerting them to the fault. This reduces response and break down times as technical support or io other personnel will be immediately alerted so that they can promptly address any maintenance or repair that device 1 requires.
It should be understood that the air delivery hoses, valving and other pneumatic equipment that are connected to air inlet valve 61 and those delivering air to second air-jet unit have been omitted from the Figs 1 to 6, for ease of reference and clarity.
It should be understood that in the abovementioned embodiment, first and second air-jet units 40,46 are first and second “fluid-jet units”. Using compressed air as the cleaning fluid, as described in the abovementioned embodiment is suited to where the ore is of low moisture content. However, it should be understood that where the ore being mined has a high moisture content, then the “compressed air” may instead be replaced by “pressurised water”, and the nozzles 44,49 instead would be for jetting pressurised water from a pressurised water supply, rather than the compressed air described earlier.
It should be understood that in other embodiments the number of nozzles on first and second air jet units 40,46 may vary.
T.K.O. Engineering AU Sampler/FP 180918
2018101375 20 Sep 2018
Claims (8)
- CLAIMS:1. A device for sampling material from a moving belt conveyor for use in an ore sampling process, said device comprising a base plate and a counter-weighted rotary cutter and support frame, said base plate disposed between said belt and its supporting conveyor5 structure, said rotary cutter and drive unit is disposed above said belt on said support frame, in use said rotating cutter rotates substantially perpendicular to the material flow above said moving belt conveyor travelling over said base plate unit, a rubber scraper fitted to said rotary cutter contacts said moving belt and as sample material is extracted from said moving belt during this rotation and is discharged into a sample discharge chute io adjacent said base plate, wherein said device has a fluid supply operably connected to a fluid delivery means for cleaning said scraper and said base plate.
- 2. A device as claimed in claim 1, wherein said fluid delivery means for cleaning includes a first fluid-jet unit disposed near said rubber scraper and a second fluid-jet unit disposed near an edge of said base plate adjacent said discharge chute.15
- 3. A device as claimed in claim 2 wherein said first fluid-jet unit includes a first set of nozzles disposed at spaced intervals thereon and directed towards said rubber scraper, said second fluid-jet unit includes a second set of nozzles disposed at spaced intervals thereon and directed towards said edge of said base plate.
- 4. A device as claimed in claim 2, wherein said device includes a controller for controlling20 fluid delivery to said nozzles.
- 5. A device as claimed in claim 3, wherein said fluid supply is a compressed air supply, and said first set of nozzles and second set of nozzles deliver air for impingement on said respective scraper and base plate.
- 6. A device as claimed in claim 3, wherein said fluid supply is a pressurised water supply,25 and said first set of nozzles and second set of nozzles deliver pressurised water for impingement on said respective scraper and base plate.
- 7. A device as claimed in claim 4, wherein at least a first sensor is fitted to said device for monitoring the presence of sample material in the vicinity of said discharge area betweenT.K.O. Engineering AU Sampler/FP 1809182018101375 20 Sep 2018 said base plate and said discharge chute, said first sensor operably connected to said controller.
- 8. A device as claimed in claim 4, wherein said controller is a program logic controller or computer controller.5 9. A device as claimed in claim 8, wherein said controller is wirelessly connected to a monitoring computer for monitoring data received from said controller.T.K.O. Engineering AU Sampler/FP 1809182018101375 20 Sep 2018FiO.l2/72018101375 20 Sep 2018PtG. Z.©ο x4-/72018101375 20 Sep 2018Fig. 45/72018101375 20 Sep 2018 οψ en «λ¢./72018101375 20 Sep 2018 \D ιί-47/72018101375 20 Sep 2018
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101375A AU2018101375B4 (en) | 2018-09-20 | 2018-09-20 | Device for sampling material from moving belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2018101375A AU2018101375B4 (en) | 2018-09-20 | 2018-09-20 | Device for sampling material from moving belt conveyor |
Publications (2)
| Publication Number | Publication Date |
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| AU2018101375A4 true AU2018101375A4 (en) | 2018-10-25 |
| AU2018101375B4 AU2018101375B4 (en) | 2020-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2018101375A Active AU2018101375B4 (en) | 2018-09-20 | 2018-09-20 | Device for sampling material from moving belt conveyor |
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| AU (1) | AU2018101375B4 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051088A (en) * | 2020-08-27 | 2020-12-08 | 苏州质达飞检测科技有限公司 | Food safety detection system |
| CN112051366A (en) * | 2020-08-27 | 2020-12-08 | 苏州质达飞检测科技有限公司 | Food safety detection system |
| CN116020168A (en) * | 2023-03-29 | 2023-04-28 | 阿卡姆(山东)健康科技有限公司 | Natural product draws jar with self-cleaning function |
| CN116878955A (en) * | 2023-07-12 | 2023-10-13 | 山东初行环保科技有限公司 | Soil ecological environment monitoring equipment and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5117967A (en) * | 1988-08-26 | 1992-06-02 | Morrow William L | Conveyor belt cleaning apparatus |
| US5767421A (en) * | 1995-06-07 | 1998-06-16 | Heron Holdings, A Limited Liability Company | Belt conveyor cross-stream sampling system |
| WO2007147201A1 (en) * | 2006-06-19 | 2007-12-27 | Geoffrey John Lyman | Cross-belt sampler for materials conveyed on a belt conveyor |
-
2018
- 2018-09-20 AU AU2018101375A patent/AU2018101375B4/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051088A (en) * | 2020-08-27 | 2020-12-08 | 苏州质达飞检测科技有限公司 | Food safety detection system |
| CN112051366A (en) * | 2020-08-27 | 2020-12-08 | 苏州质达飞检测科技有限公司 | Food safety detection system |
| CN112051088B (en) * | 2020-08-27 | 2024-01-23 | 广东家家富食品有限公司 | Food safety detection system |
| CN116020168A (en) * | 2023-03-29 | 2023-04-28 | 阿卡姆(山东)健康科技有限公司 | Natural product draws jar with self-cleaning function |
| CN116878955A (en) * | 2023-07-12 | 2023-10-13 | 山东初行环保科技有限公司 | Soil ecological environment monitoring equipment and method |
| CN116878955B (en) * | 2023-07-12 | 2024-04-09 | 山东初行环保科技有限公司 | Soil ecological environment monitoring equipment and method |
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| Publication number | Publication date |
|---|---|
| AU2018101375B4 (en) | 2020-01-02 |
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