EP3774085A1 - Scalping screen arrangement - Google Patents
Scalping screen arrangementInfo
- Publication number
- EP3774085A1 EP3774085A1 EP19709767.8A EP19709767A EP3774085A1 EP 3774085 A1 EP3774085 A1 EP 3774085A1 EP 19709767 A EP19709767 A EP 19709767A EP 3774085 A1 EP3774085 A1 EP 3774085A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen unit
- feeder
- processing plant
- support arm
- mineral material
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 71
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 64
- 239000011707 mineral Substances 0.000 claims abstract description 64
- 238000012216 screening Methods 0.000 description 8
- 230000001627 detrimental effect Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- 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
- B07B1/005—Transportable screening plants
-
- 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
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
Definitions
- the invention generally relates to mineral material processing.
- the invention relates to screening mineral material.
- Mineral material such as stone
- the mineral material may also comprise natural stone, gravel and construction waste. Both mobile and fixed plants are used for processing.
- the material to be processed is fed with e.g. an excavator or a wheel loader into a feeder of the processing plant, from where the material is forwarded to be processed.
- the material processed or to be processed is commonly screened in order to remove unwanted fractions and/or to classify the material according to size into different fractions.
- a scalping screen has been provided as a separate processing unit, as the integration of a scalping screen into a feeder would cause the mineral material processing plant to become overly high thus hindering transportation and making feeding difficult.
- the objective of the invention is to provide a screening arrangement that mitigates the problems of the prior art.
- a mineral material processing plant comprising
- first screen unit is pivotably supported on the frame and connected at a first end thereof to the frame with a first support arm, the first support arm being configured to lower and raise the first end of the first screen unit;
- the second end of the feeder is pivotably connected at a second end thereof to the first end of the first screen unit with a second support arm, the second support arm being configured to allow relative movement of the first screen unit and the feeder;
- the feeder is pivotably connected to the frame with a third support arm;
- the third support arm comprises a telescopic support arm configured to allow the lowering of the feeder and the second screen unit into a transport position and to allow adjusting the angle of the of the feeder and the second screen unit.
- the first support arm may comprise a telescopic support arm configured to allow the lowering of the first screen unit into a transport position and to adjust the angle of the of the first screen unit.
- the mineral material processing plant may further comprise a first hydraulic actuator element operably connected with the first screen unit and configured to lower and raise the first end of the first screen unit.
- the mineral material processing plant may further comprise a second hydraulic actuator element operably connected with the feeder and the second screen unit and configured to lower and raise the feeder and the second screen unit.
- the second screen unit may comprise a sub-frame and the second screen unit may be pivotably supported at a first end thereof on the sub-frame and connected at a second end thereof with a fourth support arm to the sub-frame; wherein the fourth support arm may be configured to allow adjusting the angle of the second screen unit by allowing lowering and raising of the second end thereof.
- the sub-frame may be supported on the feeder and the third support arm may be pivotably connected to the feeder.
- the sub-frame may be connected to and supported on the third support arm.
- the feeder may be connected to the sub-frame.
- the third support arm may be configured to allow the lowering of the feeder and the second screen unit into the transport position in which the vertical position of the second screen unit is lower or the same as that of the first screen unit.
- the third support arm may be configured in the operating position to allow adjusting the angle of the feeder in such away that the second screen unit remains operational.
- the mineral material processing plant may further comprise extendable and retractable support legs at the first end of the frame configured to support the mineral material processing plant at an operating position.
- the mineral material processing plant may further comprise an actuator and control element.
- the mineral material processing plant may comprise a mobile processing plant.
- the mineral material processing plant may further comprise a track base.
- Different embodiments of the present invention will be illustrated or have been illustrated only in connection with some aspects of the invention. A skilled person appreciates that any embodiment of an aspect of the invention may apply to the same aspect of the invention and other aspects
- Fig. 1 shows a schematic side view of a mineral material processing plant in transport position according to an embodiment of the invention
- Fig. 2 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention
- Fig. 3 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention
- Fig. 4 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention
- Fig. 5 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention
- Fig. 6 shows a schematic view of a detail of a mineral material processing plant according to an embodiment of the invention.
- Fig. 7 shows a schematic view of a detail of a mineral material processing plant in an operation position according to an embodiment of the invention.
- Fig. 1 shows a schematic side view of a mineral material processing plant in transport position according to an embodiment of the invention.
- the mineral material processing plant comprises a frame 10 on which the further elements of the plant are supported directly or via other elements.
- the mineral material processing plant further comprises a first screen unit 20.
- the screen unit is a two stage screen unit, i.e. the screen has two stages and provides a reject and two accepted fractions.
- the first screen unit 20 is pivotably supported on the frame 10 so that the angle thereof is adjustable. In an embodiment, the angle of the first screen unit is adjustable between 10 and 17 degrees in operating position.
- the first screen unit is connected at a first end thereof to the frame with a first support arm 12, wherein the first support arm 12 is configured to allow lowering and raising of the first end of the first screen unit 20 so that the angle of the screen is adjustable in operating position as a second end of the first screen unit 20 is pivotably supported on the frame 10.
- the first support arm is further configured to allow the first screen unit 20 to be lowered to a transport position in which the vertical position of the first screen unit is at its lowest.
- the first support arm 12 comprises a telescopic support arm, the length of which is adjustable.
- the mineral material processing plant further comprises a feeder 30.
- the feeder 30 comprises a feed conveyor.
- the feeder 30 is connected at a second end thereof to the first end of the first screen unit 20 with a second support arm 14.
- the second support arm 14 is configured to allow relative movement of the first screen unit 20 and the feeder 30 when the angle of the first screen unit 20 and/or the angle of the feeder 30 is adjusted.
- the mineral material processing plant further comprises a first hydraulic actuator element operably connected with the first end of the first screen unit and configured to raise and lower the first end of the first screen unit and the second end of the feeder 30.
- the mineral material processing plant further comprises a second screen unit 40 positioned above the feeder 30.
- the second screen unit 40 comprises a vibrating grid scalping screen, the reject of which falls away in the direction of the first end thereof, and the accept falls on the feeder 30.
- the second screen unit 40 comprises a tipping grid screen, the reject of which falls away to the side of the second screen unit, and the accept falls on the feeder 30.
- the feeder 30 is pivotably connected to the frame 10, either directly or via the second screen unit 40.
- the feeder 30 is pivotably connected to the frame 10 with a third support arm 16 at a first end thereof or near the middle thereof.
- the feeder 30 is connected to the second screen unit 40 which is connected to the frame 10 with the third support arm 16 as hereinafter described.
- the third support arm 16 comprises a telescopic support arm, the length of which is adjustable.
- the third support arm is configured to allow the lowering of the feeder 30 and the second screen unit 40 into a transport position and to allow adjusting the angle of the feeder 30 and consequently the second screen unit 40 .
- the mineral material processing plant further comprises a second hydraulic actuator element operably connected with the feeder 30 or the second screen unit 40 and configured to lower and raise the feeder 30 and the second screen unit 40.
- the second hydraulic actuator element is not necessary, but the necessary adjustments are effected by the first hydraulic actuator element via the second support arm 14.
- Fig. 1 shows the mineral material processing plant in a transport position. In the transport position the first screen unit as well as the feeder 30 and the second screen unit 40 supported thereon are lowered at their lowest possible vertical position so that the height of the second screen unit does not exceed that of the first screen unit 20 and thus enabling a transport height of the plant consistent with the transport height of a plant not comprising the second screen unit 40 above the feeder 30.
- the mineral material processing plant further comprises a power and control element comprising for example a motor and hydraulics for operating the plant as well as control arrangements for controlling the operations of the plant.
- the motor is for example a diesel motor or an electric motor that provides energy for process units and hydraulic circuits.
- the mineral material processing plant is a mobile processing plant as depicted in Fig. 1 and comprises in an embodiment a track base 60.
- the mobile processing plant instead of the track base 60, the mobile processing plant comprises wheels or skids.
- the processing plant has been depicted as a mobile processing plant in Fig. 1 and subsequent Figs., the embodiments of the invention are applicable in affixed processing plant as well e.g. for adjustment and lowering the transport height of such a plant for example when placed on flatbed truck for transportation.
- the mineral material processing plant in an embodiment comprises further elements that have not been depicted in Fig. 1 or subsequent Figs.
- Such elements comprise for example conveyors for reject and accept of the first screen unit 20.
- Fig. 2 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention.
- Fig. 2 shows the elements of the mineral material processing plant as hereinbefore described with reference to Fig. 1
- the third support arm 16 is used to adjust the angle of the feeder 30 and that of the second screen unit 40 in such a way that the second screen unit remains operational, i.e. the angle thereof is not detrimental to the screening by the second screen unit 40.
- Fig. 3 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention.
- Fig. 3 shows the elements of the mineral material processing plant as hereinbefore described with reference to Figs. 1 and 2.
- the third support arm 16 is used to adjust, in the situation of Fig. 3 by shortening the third support arm 16, the angle of the feeder 30 and that of the second screen unit 40 in such a way that the second screen unit remains operational, i.e. the angle thereof is not detrimental to the screening by the second screen unit 40.
- the second screen unit 40 comprises a sub- frame 42 which is in an embodiment supported on the feeder 30, for example on the frame of the feeder 30 or on the side structure of the feeder 30.
- the sub frame 42 is positioned above and/or on the side of the feeder 30 and supported on the frame 10 and connected thereto with the third support arm 16 as hereinafter described.
- the second screen unit 40 is pivotably supported at the first end thereof on the sub-frame 42 and connected at the second end thereto to the sub-frame 42 with a fourth support arm 44.
- the fourth support arm 44 is configured to allow adjusting the angle of the second screen unit 40 by allowing lowering and raising of the second end thereof.
- a third hydraulic actuator element is operably connected with the second end of the second screen unit in order to raise and lower the second end.
- the fourth support arm 44 is configured to allow a side of the second screen unit to be raised and lowered.
- Fig. 4 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention.
- Fig. 4 shows the elements of the mineral material processing plant as hereinbefore described with reference to Figs. 1 to 3.
- Fig. 4 shows the second screen unit 40 in an operating position in which it has been raised to an operating angle, in an embodiment between 0 and 20 degrees, by the fourth support arm 44.
- Fig. 4 shows an embodiment with the third support arm being pivotably connected to the sub frame 42 of the second screen unit 40 and the feeder 30 being supported by the sub-frame 42, i.e. being connected thereto in a such a way that the feeder 30 hangs on the sub-frame 42.
- Fig. 5 shows a schematic side view of a mineral material processing plant in an operation position according to an embodiment of the invention.
- Fig. 5 shows the elements of the mineral material processing plant as hereinbefore described with reference to Figs. 1 to 4.
- the mineral material processing plant comprises, in an embodiment, extendable and retractable support legs 70.
- the support legs 70 are hydraulically actuated.
- the connection together with the support legs 70 is configured to channel the forces and vibrations caused by the second screen unit 40 so that the feeder is less affected by the forces and vibrations.
- Fig. 6 shows a schematic view of a detail of a mineral material processing plant according to an embodiment of the invention, i.e. Fig. 6 shows the first end of the mineral material processing plant with the feeder 30 and the second screen unit 40.
- Fig. 6 shows the frame 10, the second screen unit 40 and the feeder 30.
- the second screen unit 40 is showing comprising the sub-frame 42 and the fourth support arm 44 as hereinbefore described.
- the third support arm 16 having the structure and functionality as hereinbefore described, is pivotably connected to the frame 10 and to the sub-frame 42 at a connection point 36.
- the feeder 30 is attached to the sub-frame 42 at attachment points 32 and 34 so that the feeder 30 in effect hangs inside the sub-frame 42 and below the second screen unit 40.
- Fig. 6 further shows the support legs 70 in a retracted position.
- the mineral material processing plant further comprises a back plate 46 configured to protect the structures from the reject of the second screen unit 40.
- the mineral material processing plant comprises a protective plate on the side of the second screen unit depending on the type of the second screen unit 40.
- Fig. 7 shows a schematic view of a detail of a mineral material processing plant according to an embodiment of the invention, i.e. Fig. 7 shows the feeder 30 attached to the sub-frame 42 at points 32,34.
- the connection point 36 for the third support arm has been depicted as well.
- the mineral material processing plant comprises feeder side walls 80a, 80b.
- the sidewalls are in an embodiment attached to the sub-frame 42.
- a technical advantage of different embodiments of the invention may be considered to be the provision of a scalping screen integrated into the single processing plant. Further, a technical advantage of different embodiments of the invention may be considered to be the provision of extra screening capacity without compromising transportability. Still further, a technical advantage of different embodiments of the invention may be considered to be improved adjustability of the feeder. Still further, a technical advantage of different embodiments of the invention may be considered to be improved control of forces caused by screening.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20185332A FI129161B (en) | 2018-04-09 | 2018-04-09 | A mineral material processing plant |
PCT/FI2019/050132 WO2019197706A1 (en) | 2018-04-09 | 2019-02-20 | Scalping screen arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3774085A1 true EP3774085A1 (en) | 2021-02-17 |
EP3774085B1 EP3774085B1 (en) | 2022-04-06 |
Family
ID=65718039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19709767.8A Active EP3774085B1 (en) | 2018-04-09 | 2019-02-20 | Mineral material processing plant |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3774085B1 (en) |
FI (1) | FI129161B (en) |
WO (1) | WO2019197706A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11351572B2 (en) * | 2017-11-29 | 2022-06-07 | Terex Usa, Llc | Screen maintenance link |
WO2021213605A1 (en) * | 2020-04-20 | 2021-10-28 | Sandvik Ltd | Screening assembly for a mobile bulk material processing apparatus |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19600897C1 (en) * | 1996-01-12 | 1997-04-10 | H Aug Schmidt Transportanlagen | Mobile preparation plant for wet classification of gravel and sand |
CN101384378A (en) * | 2006-02-16 | 2009-03-11 | 奥贾伊研究与设计有限公司 | A material screening apparatus |
FI127094B (en) * | 2012-01-03 | 2017-11-15 | Metso Minerals Inc | Material processing plant |
DE102014005192A1 (en) * | 2014-04-09 | 2015-10-15 | Backers Maschinenbau Gmbh | Rust for bulk goods |
-
2018
- 2018-04-09 FI FI20185332A patent/FI129161B/en active IP Right Grant
-
2019
- 2019-02-20 WO PCT/FI2019/050132 patent/WO2019197706A1/en active Search and Examination
- 2019-02-20 EP EP19709767.8A patent/EP3774085B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FI129161B (en) | 2021-08-13 |
EP3774085B1 (en) | 2022-04-06 |
FI20185332A1 (en) | 2019-10-10 |
WO2019197706A1 (en) | 2019-10-17 |
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