EP3747554A1 - Mobile aggregatverarbeitungsanlage - Google Patents

Mobile aggregatverarbeitungsanlage Download PDF

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Publication number
EP3747554A1
EP3747554A1 EP19178915.5A EP19178915A EP3747554A1 EP 3747554 A1 EP3747554 A1 EP 3747554A1 EP 19178915 A EP19178915 A EP 19178915A EP 3747554 A1 EP3747554 A1 EP 3747554A1
Authority
EP
European Patent Office
Prior art keywords
screening unit
vibrating screening
aggregate
mobile
processing plant
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.)
Withdrawn
Application number
EP19178915.5A
Other languages
English (en)
French (fr)
Inventor
Malachy James Rafferty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Portafill International Ltd
Original Assignee
Portafill International Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Portafill International Ltd filed Critical Portafill International Ltd
Priority to EP19178915.5A priority Critical patent/EP3747554A1/de
Priority to EP20177645.7A priority patent/EP3747555B1/de
Publication of EP3747554A1 publication Critical patent/EP3747554A1/de
Withdrawn legal-status Critical Current

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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 present invention relates to a mobile aggregate processing plant for screening aggregate material, generally to separate by 'screening' a mixed size or coarseness of an aggregate feed material into two or more discharge streams of different particle size.
  • Mobile aggregate processing plants for screening aggregate material are well known in the art: see for example US669859B2 . They generally comprise a vibrating screening unit, sometimes termed a 'screen box', having a series of heavy-duty screens with defined openings, such that an aggregate feed material can be separated by the moving screens into different sized discharge streams. Typically, there are one or more discharge streams at or near the end of the vibrating screening device of different particle sizes or coarseness, whilst that part of the aggregate material with a dimension less than the openings in the screens, is drawn by gravity down through the screen openings, and can be collected directly beneath the screening unit.
  • the discharge streams can be directed away from the plant by various suitable conveyors, generally being positioned in different directions, into suitable piles or into suitable containers or trucks, etc.
  • the mobile aggregate processing plant can be relocated for processing a new feed of aggregate material, typically at or near the same site.
  • the screens may be arranged in a series of levels, sometimes termed 'decks', such as 'upper deck' and 'lower deck'.
  • the action of the vibrating screening unit is usually of such 'heavy duty', that regular repair or replacement of the screen therein is required. Replacement of the screens is also sometimes required when the nature of the aggregate feed material changes, or different grades or types of discharge streams are required.
  • Vibrating screen units can be used in various mobile aggregate processing plants, possibly in conjunction with one or more other apparatus units or devices such as a crusher.
  • EP3409381A2 discloses an improved mobile aggregate processing plant comprising a mobile chassis, a vibrating screening unit mounted on the mobile chassis, and an underscreen conveyor which is driveable in an uphill direction so as to be able to discharge the aggregate discharge stream at a height higher than receiving the aggregate discharge stream from the vibrating screening unit, and relative to the mobile chassis.
  • a mobile aggregate processing plant for screening aggregate material comprising a mobile chassis having a main frame and a vibrating screening unit mounted via one or more absorbers on a screen-mounting frame and able to provide at least one aggregate discharge stream therethrough, wherein the vibrating screening unit is moveable relative to the screen-mounting frame between a first in-use position, and at least a second position able to provide an access portal below the vibrating screening unit when not in use.
  • the vibrating screening unit may be moveable relative to the screen-mounting frame to more than one second position.
  • at least one second position is a second non-use position.
  • the vibrating screening unit is moveable at one end relative to the screen-mounting frame.
  • the vibrating screening unit is moveable at either end relative to the screen-mounting frame.
  • the vibrating screening unit is moveable at both ends relative to the screen-mounting frame.
  • a vibrating screen unit has an aggregate feed end and a discharge end, with a series of heavy-duty screens thereinbetween.
  • the present invention is able to provide an access portal below the vibrating screen unit at either end, or at both ends.
  • the movement of one or both ends may relate to the positioning of the vibrating screen box relative to the remainder of the mobile aggregate processing plant, in particular relative to the other parts, units or frames of the mobile aggregate processing plant.
  • the mounting of the vibrating screen unit on the mobile aggregate processing plant may be at any suitable location.
  • the vibrating screen unit is located between a feed hopper and one or more discharge conveyors.
  • the vibrating screen unit is located on or otherwise above a conveyor, and mounted thereon.
  • the vibrating screen unit may be mounted directly onto another working part or unit of the mobile aggregate processing plant, or may be mounted to a frame or sub-frame of the mobile aggregate processing plant, and the screen-mounting frame may comprise a dedicated part or unit of the mobile aggregate processing plant adapted to wholly or substantially support the vibrating screen unit, or the screen-mounting frame may be one or more mountings added to another part, unit or frame of the mobile aggregate processing plant.
  • the mobile aggregate processing plant further comprises one or more sub-frames, and the screen-mounting frame is a first sub-frame.
  • the vibrating screening unit is moveable relative to a first sub-frame.
  • the first sub-frame is mounted on the main frame of the mobile aggregate processing plant.
  • any such first sub-frame is also moveable relative to the main frame, for example via one or more actuators, typically but not limited to vertical displacement of the vibrating screening unit relative to the main frame.
  • the vibrating screen unit is mounted to the screen-mounting frame via one or more absorbers.
  • the vibrating screen unit is mounted to the screen-mounting frame via a plurality of absorbers arranged on or around the screen-mounting frame, typically symmetrically thereon or therearound, and able to at least partly absorb the action of the vibrating screening unit relative to the remainder of the mobile aggregate processing plant.
  • the absorbers include, but are not limited to one or more of the group comprising: springs, actuators, ram and pistons, and dampers; typically springs.
  • Movement of the vibrating screening unit may be facilitated by a variety of actuators based on the driving force for the system.
  • Driven systems may be optionally mechanically, electro-mechanically, or hydraulically or pneumatically driven.
  • the vibrating screening unit is moveable in an upward direction by one or more of the group comprising: actuators, springs, ram and pistons, and screws.
  • the vibrating screening unit is moveable in an upward direction by one or more hydraulic ram and pistons located between the vibrating screening unit and the screen-mounting frame.
  • the ends of the or each hydraulic ram are configured between the vibrating screening unit and the screen-mounting frame.
  • the ends of the or each hydraulic ram are configured at or near one end of the vibrating screening unit and the screen-mounting frame.
  • the vibrating screening unit is moveable in an upward direction by two hydraulic ram and pistons located between the vibrating screening unit and the screen-mounting frame, one hydraulic ram and piston located on each side of the vibrating screening unit and the screen-mounting frame.
  • one end of the vibrating screening unit is pivoted on the screen-mounting frame, at least at one end.
  • the mobile aggregate processing plant further comprises an underscreen conveyor.
  • the underscreen conveyor is located wholly or substantially beneath the vibrating screening unit to wholly or substantially receive said at least one aggregate discharge stream.
  • the underscreen conveyor is mounted on the mobile chassis independently of the mounting of the vibrating screening unit on the mobile chassis.
  • the underscreen conveyor could be mounted on the main frame, and the vibrating screening unit could be mounted on the first sub-frame.
  • the underscreen conveyor is vertically and/or laterally moveable relative to the screen-mounting frame between the operating and non-operating configurations.
  • the underscreen conveyor and the vibrating screening unit are movable apart between a co-operating operating configuration and an open non-operating configuration, optionally to maximise the space thereinbetween for an operator to work in or around or through, and/or to maximise access to the vibrating screening unit.
  • the underscreen conveyor works in co-operation with the vibrating screening unit when the vibrating screening unit is in a first in-use position.
  • the underscreen conveyor is driveable in an uphill direction so as to be able to discharge the aggregate discharge stream at a height higher than receiving the aggregate discharge stream, and the vibrating screening unit and underscreen conveyor are driveable in the same direction.
  • the vibrating screening unit comprises at least a series of upper screens and a series of lower screens, and one or more of the lower screens are removeable when the underscreen conveyor is in the non-operating configuration.
  • the underscreen conveyor includes one or more wings to increase the aggregate discharge catchment area of the underscreen conveyor.
  • the wings may be moveable relative to the conveyor belt, to increase the access portal.
  • the mobile aggregate processing plant further comprises a post-screening discharge conveyor located at least partly beneath the vibrating screening unit to receive at least some of the aggregate discharge stream from the vibrating screening unit.
  • the mobile aggregate processing plant further comprises a crusher, crusher unit, or other crushing means.
  • the crusher is mounted on the mobile chassis.
  • the vibrating screening unit has an aggregate feed end or 'inlet end', and a discharge end or 'outlet end.
  • the vibrating screening unit is operable in various modes and locations, including horizontal or inclined, i.e. having the aggregate feed end higher than the discharge end relative to the mobile chassis.
  • the mobile aggregate processing plant further comprises one or more of the group comprising: an aggregate feed hopper, an aggregate feed conveyor, one or more post-screening discharge conveyors, and a crusher.
  • One or more of said groups may be supported by one or more sub-frames of the mobile aggregate processing plant.
  • the mobile aggregate processing plant described herein at least comprises:
  • the mobile aggregate processing plant has at least one post-screening discharge conveyor extending in a non-parallel direction to the vibrating screening unit.
  • the mobile aggregate processing plant has two or more post-screening discharge conveyors extending laterally to the sub-frame and vibrating screening unit.
  • the mobile aggregate processing plant has at least one post-screening discharge conveyor extending in a non-parallel direction to the vibrating screening unit, and two or more post-screening discharge conveyors extending laterally to the vibrating screening unit.
  • the mobile aggregate processing plant is able to be located within an ISO high cube container.
  • a method of servicing a mobile aggregate processing plant for screening aggregate material comprising a mobile chassis having a main frame and a vibrating screening unit mounted via one or more absorbers on a screen-mounting frame, comprising at least the steps of:
  • the mobile aggregate processing plant further comprises an underscreen conveyor wholly or substantially located beneath the vibrating screening unit to receive the aggregate discharge stream discharged through the vibrating screening unit, and the method further comprises: moving the underscreen conveyor away from the vibrating screening unit between a co-operating operating configuration and an open non-operating configuration.
  • the method further comprises moving the underscreen conveyor away from the vibrating screening unit between a co-operating operating configuration and an open non-operating configuration.
  • the present invention relates to a mobile aggregate processing plant for screening aggregate material.
  • Mobile aggregate processing plants are well known in the art, and generally comprise a mobile chassis, which may be typically formed of a frame or framework, having an undercarriage, and typically a plurality of wheels on each side, optionally with a caterpillar-type track or tracking around the wheels in a manner known in the art.
  • the action and ability of caterpillar tracks is well known in the art, and is not further discussed herein.
  • the plant may be self-mobile, usually within an area or range, such as within a working area or areas at which it is desired to process aggregate material, such as a demolition site or rock-processing site.
  • Such mobility can be provided by a suitable motor on the mobile chassis.
  • the mobile aggregate processing plant of the present invention can be located within an ISO 40 foot container, or an ISO high cube container, in a transport configuration, or in an alternative, the mobile aggregate processing plant may be able to be towed on a public highway by a large vehicle, or towed on a suitable trailer, wherein being able to reduce the overall height of the mobile aggregate processing plant can also allow larger sized mobile aggregate processing plants to be more conveniently transported from place to place.
  • the plant of the present invention includes a mobile chassis typically being an elongate frame able to support most or all of the other components or features of the mobile aggregate processing plant.
  • the mobile chassis includes one or more sub-frames, including a first sub-frame to mount and support the vibrating screening unit.
  • the mobile chassis includes a second sub-frame to support a feed hopper (described hereinafter), and possibly one or more third sub-frames to support one or more discharge conveyor.
  • the mobile chassis has an elongate arrangement, with one end generally being for the provision of aggregate feed material to be screened, sometimes termed an aggregate feed end' or 'inlet end', and an opposing end generally being for the location of one or more discharges of screened material, sometimes also termed a 'discharge end'.
  • the present invention may include an aggregate feed hopper designed or configured to receive a feed or other supply of aggregate material, which may be provided by any suitable supply means.
  • the hopper is typically designed to direct the aggregate feed towards an aggregate feed conveyor located at the bottom of the hopper, and typically having a conveyor belt able to convey the aggregate feed towards a discharge end of the conveyor belt, which discharge end is able to transfer the feed aggregate into and/or onto one end of a vibrating screening unit.
  • the aggregate feed conveyor is inclined, typically in an uphill direction towards its discharge end.
  • Vibrating screening units are well known in the art, and typically comprise a plurality of screens having openings of defined dimensions.
  • the vibrating screening unit has screens having openings of two or more different sizes.
  • the vibrating screening unit has multiple layers or 'decks' of screens, including 'half decks'.
  • a typical configuration comprises an 'upper deck' of screen or screens, and a 'lower deck' screen or screens.
  • One typical arrangement comprises a series of upper screens having openings of one size, and a series of lower screens having openings of a different size, typically of a smaller size than the openings of the upper screen.
  • the screens are typically vibrated by the use of one or more motors, sometimes providing eccentric motion, and able to move at least one part of each screen relative to another part, to create motion of the screens and hence to help 'screen' or separate the mixed aggregate feed material into at least two different particle sizes or 'grades', optionally more than two different particle sizes, some of which can pass through at least one screen, optionally both or all screens, and some of which cannot.
  • the vibrating screening unit is inclined from its upper inlet end receiving the aggregate feed material from the aggregate feed conveyor, downwardly towards its discharge or outlet end, from where there can be one or more discharges of at least one grade of aggregate discharge stream.
  • the downward inclination of the vibrating screening unit uses gravity to provide at least some of the movement of the aggregate material along the vibrating screening unit, and so helps a continuous screening action to occur along the length of the vibrating screening unit.
  • One discharge stream may be that portion of the feed aggregate material that is unable to pass through every screen of the vibrating screening unit, i.e. which typically passes across the top of all screens and is discharged as the coarsest grade or an 'uppermost' stream, typically comprising the largest or coarsest particle size or sizes of the aggregate feed material.
  • the vibrating screening unit may comprise at least two decks of screens having different sized openings
  • Such a discharge stream(s) could be provided to a collecting end of a post-screening discharge conveyor, for conveying to a discharge end thereof and into a separate container or to form a separate pile.
  • one or more of the post-screening discharge conveyors may be arranged to be at the same or a different longitudinal direction as the vibrating screening unit.
  • the vibrating screening unit is mounted via one or more absorbers on a screen-mounting frame, and moveable relative to the screen-mounting frame between a first in-use position, and at least a second position able to provide an access portal below the vibrating screening unit when not in use.
  • the vibrating screening unit is moveable in one or more dimensions and/or directions to increase the gap or space between the vibrating screening unit and the screen-mounting frame, and/or the main frame or another part of the plant.
  • the vibrating screening unit is moveable between a first in-use position and at least a second non-use position, so that better access to at least the underside of the vibrating screening unit is possible.
  • Such access has dramatic benefit during the maintenance and/or repair and/or replacement work required to maintain the vibrating screening unit, or change the screens for another reason.
  • screens used in a vibrating screening unit can 'wear out' and/or break, typically regularly and without warning. It is expected during the normal operation of a mobile aggregate processing plant for screening aggregate material to replace the screens of a vibrating screening unit regularly. Where such screens are accessible from an upper position on or over the vibrating screening unit, such replacement may be a relatively fast and simple exercise.
  • the vibrating screening unit work in co-operation in a manner known in the art to provide one or more aggregate discharge streams.
  • the vibrating screening unit may be moveable in an upward direction by one or more actuators, such as a plurality of hydraulic ram and pistons, between the vibrating screening unit and the screen-mounting frame, optionally located thereinbetween.
  • the vibrating screening unit may be moveable at one end, or at both ends thereof, based on suitable location of the one or more actuators.
  • the vibrating screening unit is mounted onto a conveyor, such as a discharge conveyor, using one or more dedicated mountings on the conveyor to mount and support the vibrating screening unit.
  • the mobile aggregate processing plant of the present invention can include an underscreen conveyor, located wholly or substantially located beneath the vibrating screening unit.
  • the underscreen conveyor is located to receive an aggregate discharge stream which is able to pass down through the vibrating screening unit before reaching the outlet end of the vibrating screening unit from which larger grades of material are discharged.
  • Such an aggregate discharge stream generally comprises that portion of the aggregate feed material that is sized to be less than all screens in the vibrating screening unit, sometimes termed the 'fines', being the finest discharge material, and such material discharges downwardly through the screens of the vibrating screening unit prior to reaching the outlet end of the vibrating screening unit.
  • An underscreen conveyor may include one or more conveyor belts, typically one conveyor belt driven from at least one end, typically in a forward motion to convey a received discharge stream to a discharge end.
  • the discharge end of an underscreen conveyor is able to discharge received material onto a post-screening discharge conveyor, which post-screening discharge conveyor may be in line with, or at an angle to, or lateral to, the longitudinal direction of the mobile chassis and/or the vibrating screening unit.
  • the post-screening discharge conveyor is located at least partly beneath the vibrating screening unit to receive at least some of the aggregate discharge stream from the vibrating screening unit. In this way, the underscreen conveyor does not need to have a catchment area that extends the full extent or length of the discharge below the vibrating screening unit.
  • any underscreen conveyor is also moveable relative to the vibrating screening unit to further improve the space for access below the vibrating screening unit when not in use, in particular accessibility by repair or service personnel to the bottom or the lower parts and/or underneath of the vibrating screening unit.
  • An underscreen conveyor could be supported on the mobile chassis using one or more supports, typically including at least one or more legs or struts, optionally extendable legs or struts, and/or including the use of one or more actuators or other ram and piston arrangements, whose movement or activation is able to move the position of the underscreen conveyor relative to the vibrating screening unit and/or the mobile chassis.
  • Such movement may be in at least a vertical direction relative to the vertical screening unit, or in a lateral direction relative to the vertical screening unit, or both.
  • Such movement may also allow the underscreen conveyor and vibrating screening unit to be moveable apart between a co-operating operating configuration and an open non-operating configuration.
  • the first configuration may be considered as an 'operating configuration', wherein the underscreen conveyor is able to wholly or substantially receive the at least one aggregate discharge stream passing directly through the vibrating screening unit, and to discharge said stream, optionally in an uphill direction, to its discharge end.
  • the second configuration may be considered as a non-operating configuration', wherein the underscreen conveyor is not designed to co-operate with vibrating screening unit in use.
  • the mobile aggregate processing plant of the present invention may include a crusher.
  • a crusher is a jaw crusher. Jaw crushers are particularly suitable for, rough crushing at quarries, or crushing of waste or construction materials.
  • the crusher may be of any size, shape, design or arrangement, generally having one or more jaws or arms, an upper portion adapted to receive material, typically from a feed hopper or the like, and one or more discharge outlets, typically starting at a low or lower portion, optionally at the bottom of the crusher, and able to allow crushed material to pass out away from the crusher, typically on to one or more conveyor belts or the like.
  • a mobile aggregate processing plant 2 for screening a mixed grade aggregate feed material (not shown), and based on also having an underscreen conveyor in combination with the vibrating screening unit.
  • the plant 2 comprises a mobile chassis 4, comprising at least a main frame 5 and a first sub-frame 6.
  • the mobile chassis 4 has caterpillar tracks 7 to provide its mobility, at least within a location or range, and an engine 8.
  • the first sub-frame 6 supports a vibrating screening unit 20 discussed hereinafter, and the main frame 5 is able to support directly or via or more other sub-frames the other components of the mobile aggregate processing plant.
  • the main frame 5 and first sub-frame 6 may be integrally formed, or relatively moveable.
  • the mobile chassis 4 has an elongate arrangement, able in this way to define one end being a 'hopper end' 10 for the provision of aggregate material to be screened, and a discharge end 12, wherein one or more grades of discharge material, generally in the form of discharge streams, can be discharged, typically towards distinct or separate locations or for further conveyance means or mechanisms such as containers or trucks or trailers.
  • the hopper end 10 includes an aggregate feed hopper 14 known in the art, and able to create an enlarged opening above an aggregate feed conveyor 16, and so direct aggregate feed material that is provided into the hopper 14 down towards the conveyor belt of the aggregate feed conveyor 16.
  • the aggregate feed conveyor 16 conveys the feed aggregate material from a generally lower end, upwardly towards a discharge end 18, and into a receiving or inlet end of a vibrating screening unit 20.
  • the vibrating screening unit 20 is inclined downwardly from the inlet end, to a discharge or outlet end 22, which incline allows gravity to assist the movement of the mixed aggregate feed material along the length of the vibrating screening unit 20 in a manner known in the art.
  • the vibrating screening unit 20 comprises an upper deck of upper screens 24 (shown in Figure 2 ) having openings of a first size, and a lower deck of aligned lower screens under the upper screens 24, and having openings of a smaller size than the openings in the upper screens 24.
  • a vibrating screening unit 20 The motion, action and effect of a vibrating screening unit 20 is known in the art, often involving eccentric motion, and possibly based on using eccentric weights, which are able to move, in particular vibrate, optionally vibrate rapidly, the screens, causing the mixed aggregate feed material to separate, and allowing that material which is able to pass through all the openings in the screens, the 'fines', to pass downwardly therethrough.
  • That portion or grade of the aggregate feed material that cannot pass through even the largest screen openings, being those of the upper screens 24 in the example shown in figure 1 provides a 'most coarse' grade of discharge material having the largest average particle size, diameter or other dimension.
  • This material is provided as one discharge stream to the top of the discharge end 22 of the vibrating screening unit 20 and onto a first post-screening discharge conveyor 30.
  • the first such conveyor 30 may be in line with the vibrating screening unit 20, and has a discharge end 32 able to provide its discharge stream to a first location or to a first container or the like.
  • That portion or grade of the aggregate feed material that can pass through the openings in the upper screens 24 but not through the smaller openings of the lower screens can be provided as a second grade of material, and as a discharge stream onto a second post-screening discharge conveyor 40, to be conveyed therealong to a second discharge end 42 to a separate location or separate container, etc.
  • the example of the present invention shown in figures 1 and 2 shows the second conveyor 40 being in a lateral direction to the general direction of the vibrating screening unit 20 and the first discharge conveyor 32.
  • FIGS 1 and 2 also show an underscreen conveyor 50 wholly or substantially located beneath the vibrating screening unit 20.
  • the underscreen conveyor 50 comprises a hopper surround 52, and a conveyor 54, and a discharge end 56.
  • the hopper surround 52 may be formed from a series of separable or moveable wings on three sides to form a hopper arrangement so as to increase the discharge catchment area of the underscreen conveyor 50.
  • the vibrating screening unit 20 may include a depending discharge curtain to wholly or substantial co-ordinate with the underscreen conveyor 50 and/or hopper surround 52 to co-ordinate the passage of material thereinbetween.
  • the underscreen conveyor 50 is able to receive that portion of the feed aggregate material able to pass through all the openings in the upper screens 24 and the lower screens, and thus pass directly down through the vibrating screening unit 20 to fall beneath it. Such portion can be gathered by the hopper arrangement 52, and conveyed by the conveyor 54 in a forward and uphill motion towards its discharge end 56, and onto a third lateral post-screening discharge conveyor 60, only shown in figure 2 for clarity purposes.
  • Figure 1 also shows a hydraulic ram 80 configured between, on one side, and near one end of the vibrating screening unit 20 and the first sub-frame 6.
  • the plant 2 includes a symmetrical second hydraulic ram (not shown) configured between, near one end, and on the other side of the vibrating screening unit 20 and the first sub-frame 6.
  • FIG 2 shows the hydraulic ram 80 in an extended position, so that the vibrating screening unit 20 is in a second or non-operational position.
  • the vibrating screening unit 20 is moveable upwards using the hydraulic rams 80.
  • a representative indication of scale is to move the bottom of the vibrating screening unit 20 from a height above ground level from an exemplary value of 1365mm in Figure 1 , to an exemplary value of 2022mm in Figure 2 . This creates an access portal 82 below the vibrating screening unit, or between the vibrating screening until and the underscreen conveyor 50, for increased ease of access.
  • the underscreen conveyor 50 is supported at one end by a first leg framework 70, and towards its discharge end 56 by a second leg framework 72.
  • the first and second leg frameworks 70, 72 are moveable, generally by the action of one or more actuators or ram and piston arrangements, so as to be able to move the underscreen conveyor 50 from an operational configuration as shown in figure 1 , able to cooperate in use with the vibrating screening unit 20 and receive a discharge stream therefrom, and a second or non-operational position, as shown in figure 3 .
  • Figure 3 show an increased access portal 84 between the underscreen conveyor 50 in its second position or configuration, and the lower portion or parts of the vibrating screening unit 20, to allow a user to more access to work on the lower parts or underneath of the vibrating screening unit 20, in particular to replace lower screens 26 when they are either worn out or otherwise broken.
  • Movement of the vibrating screening unit 20 and/or the underscreen conveyor 50 in reverse direction returns the plant 2 to the in-use position or configuration of Figure 1 .

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  • Combined Means For Separation Of Solids (AREA)
EP19178915.5A 2019-06-07 2019-06-07 Mobile aggregatverarbeitungsanlage Withdrawn EP3747554A1 (de)

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Application Number Priority Date Filing Date Title
EP19178915.5A EP3747554A1 (de) 2019-06-07 2019-06-07 Mobile aggregatverarbeitungsanlage
EP20177645.7A EP3747555B1 (de) 2019-06-07 2020-06-01 Mobile aggregatverarbeitungsanlage und verfahren zur wartung der mobilen aggregatverarbeitungsanlage

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EP19178915.5A EP3747554A1 (de) 2019-06-07 2019-06-07 Mobile aggregatverarbeitungsanlage

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EP3747554A1 true EP3747554A1 (de) 2020-12-09

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EP20177645.7A Active EP3747555B1 (de) 2019-06-07 2020-06-01 Mobile aggregatverarbeitungsanlage und verfahren zur wartung der mobilen aggregatverarbeitungsanlage

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Publication number Priority date Publication date Assignee Title
EP4140922B1 (de) * 2021-08-24 2024-01-03 Portafill International Limited Mobile aggregatverarbeitungsvorrichtung

Citations (7)

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