EP3406357B1 - Magnetic filter lining fixing system - Google Patents

Magnetic filter lining fixing system Download PDF

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Publication number
EP3406357B1
EP3406357B1 EP17000871.8A EP17000871A EP3406357B1 EP 3406357 B1 EP3406357 B1 EP 3406357B1 EP 17000871 A EP17000871 A EP 17000871A EP 3406357 B1 EP3406357 B1 EP 3406357B1
Authority
EP
European Patent Office
Prior art keywords
screen
adapter
screen lining
wear protection
segments
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.)
Active
Application number
EP17000871.8A
Other languages
German (de)
French (fr)
Other versions
EP3406357A1 (en
Inventor
Matthias Coppers
Jürg Pollmanns
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.)
HEIN LEHMANN GmbH
Original Assignee
Hein Lehmann GmbH
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 Hein Lehmann GmbH filed Critical Hein Lehmann GmbH
Priority to EP17000871.8A priority Critical patent/EP3406357B1/en
Priority to US16/615,875 priority patent/US20200078827A1/en
Priority to PCT/EP2018/000237 priority patent/WO2018215086A1/en
Publication of EP3406357A1 publication Critical patent/EP3406357A1/en
Application granted granted Critical
Publication of EP3406357B1 publication Critical patent/EP3406357B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4645—Screening surfaces built up of modular elements
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/12—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs using pulses generated mechanically in fluid
    • B03B5/18—Moving-sieve jigs
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/24—Constructional details of jigs, e.g. pulse control devices
    • 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
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material
    • 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
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/02—Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces

Definitions

  • the invention relates to a fastening system for screening machines and/or jigs for fastening exchangeable screen lining segments and/or exchangeable wear protection elements in or on a screening machine with at least one frame accommodating the screen lining segments and/or carrying the wear protection elements.
  • a sieve bottom with a frame is known, on which carriers are arranged, to which plate-shaped sieve elements are fastened, the sieve elements and/or the carrier having locking pins which engage positively in counter-holes of the carrier and/or the sieve elements.
  • a screening machine is known with at least one frame to which a screening element is attached, with electromagnets being arranged on the frame, which interact with metal corner plates in order to achieve magnetic attachment.
  • a screen with at least one screen element is known, which is attached to a frame, with permanent magnets being arranged on the screen elements and serving for attachment to the frame.
  • a screening machine is known with at least one frame to which a screening element is attached, with electromagnets being arranged on the frame, which interact with metal corner plates in order to achieve magnetic attachment.
  • a disadvantage of the known fastening systems is therefore that complex disassembly and assembly is necessary in order to dismantle worn screen lining segments and wear protection elements and replace them with new screen lining segments and wear protection elements, which often have to be assembled with great effort and in extremely cramped conditions.
  • the object of the invention is to overcome these disadvantages and to specify a screen cloth fastening system which is easy to dismantle and assembly of screen lining segments and wear protection elements on a screening machine.
  • screening machine and jig are used synonymously.
  • the screen mesh segments and wear protection elements that are subject to wear are attached to adapters by a magnetic coupling, with each adapter having at least one magnet that forms a magnetic connection with a ferromagnetic coupling element assigned to the screen mesh segment and/or wear protection element.
  • the adapter which has the magnet, remains on the frame of the screening machine whenever a worn screen lining segment or wear protection element is replaced. To replace a wearing part, you only have to loosen the magnetic connection and insert a new screen lining segment and/or Wear protection element are placed. The screen lining segments and/or wear protection elements are thus attached magnetically to the screening machine.
  • One or more ferromagnetic coupling elements are cast into each screen lining segment and/or each wear protection element.
  • the screen lining segments and/or the wear protection elements can be formed from polyurethane, in which ferromagnetic coupling elements are cast.
  • the ferromagnetic coupling elements can simultaneously form mechanical reinforcements in the screen lining segments and/or wear protection elements. This means that the ferromagnetic coupling elements cast into the screen mesh segments and/or wear protection elements simultaneously form reinforcements of the screen mesh segments and/or wear protection elements.
  • the metal reinforcements already provided in the screen lining segments and/or wear protection elements to increase the load-bearing capacity can simultaneously serve as ferromagnetic coupling elements for producing the magnetic connection with the magnets of the adapters or adapter strips.
  • the adapter itself can be magnetically fixed to the frame of the screening machine.
  • the exchangeable screen lining segments and/or the exchangeable wear protection elements can be attached directly or indirectly to the adapter magnetically and/or with a positive fit and/or with a force fit. Fastening the adapter magnetically to the frame of the screening machine enables the adapter to be fastened easily and dismantled.
  • the magnetic and/or positive and/or non-positive attachment of the screen lining segments and/or wear protection elements to the adapter can take place directly or indirectly.
  • the screen base can also be formed by a single, one-piece screen lining segment.
  • the invention is therefore not limited to an application with a screen bottom formed from a plurality of screen lining segments, although this represents a preferred embodiment.
  • the adapter is preferably attached to a component of the screening machine made of non-ferromagnetic material.
  • the adapter can be fastened with a force fit and/or with a material fit and/or with a form fit.
  • stainless steel is a non-ferromagnetic material.
  • the adapter can thus serve as a fastening and connecting element by itself being fastened to non-magnetic surfaces and components made of stainless steel, for example.
  • Such an arrangement of the adapter with at least one magnet also makes it possible to magnetically attach screen lining segments and/or wear protection elements to components made of a non-ferromagnetic material.
  • the adapter can be fastened to a ferromagnetic component of the screening machine.
  • the adapter can be attached magnetically and/or force-fittingly and/or materially and/or positively.
  • the Adapters have magnets that act on both sides, by means of which the adapter itself is magnetically attached to a ferromagnetic component of the screening machine and which at the same time serve to interact with at least one ferromagnetic coupling element arranged in a vibration-proof manner in or on the screen lining segment and/or wear protection element and thereby create a magnetic connection between the Produce adapter and the screen lining segment and/or wear protection element.
  • the magnets serve both to magnetically attach the adapter to the screening machine and to magnetically attach the screen lining or the wear protection element to the adapter.
  • such adapters can also be attached to the side parts of screening machines and can be used to attach lateral wear protection elements.
  • These side parts can be, for example, vertical boundary walls above the sieve bottom.
  • it can be an adapter for shaft protection tubes that wrap around the tube, adhere there magnetically and in turn magnetically hold a wear protection element that wraps around the tube.
  • the adapter can be designed in particular as an elongate adapter bar.
  • the frame of the screening machine which accommodates the adapter or adapter strips, can be formed by X-profiles and/or C-profiles and/or U-profiles and/or T-profiles and/or KR-profiles and/or angle profiles.
  • the adapter can be formed by a plastic component, in particular as an injection molded part with one or more cast-in magnets.
  • the adapter can have bores, in particular for accommodating fastening dowels for fastening the adapter to so-called KR profiles and/or angle profiles.
  • the attachment of the adapter to the frame of the screening machine can in particular take place in a non-positive manner and/or with a material connection and/or with a form fit.
  • the concept of the frame of the screening machine includes every component of the screening machine on which an exchangeable Screen lining segment and / or a replaceable wear protection element is particularly attached indirectly.
  • a particular advantage of the invention is therefore that the fastening system for screening machines for fastening exchangeable screen lining segments and/or exchangeable wear protection elements can be retrofitted by arranging adapters in existing screening machines, since the adapters can be attached to the ones originally provided for the screen lining segments and/or wear protection elements Recordings and mounting locations can be attached.
  • the magnets are arranged in or on the adapters that remain on the screening machine.
  • Each adapter preferably has a plurality of magnets, which are arranged in particular equidistantly.
  • the magnetic holding force can be increased and exerted evenly, for example, along the edges of the screen mesh segments and/or wear protection elements to be fastened.
  • One or more ferromagnetic coupling elements are preferably formed by mounting rails and/or mounting frames that are magnetically fixed to the adapter, with screen lining segments and/or wear protection elements being non-positively and/or positively fixed to the mounting rails and/or mounting frame in a vibration-proof manner.
  • One or more mounting rails and/or mounting frames made of ferromagnetic material can thus be arranged to produce the magnetic connection with the adapters, with the screen lining segments and/or wear protection elements being non-positively and/or positively secured to the mounting rails and/or mounting frame in a vibration-resistant and, in particular, exchangeable manner .
  • the screen lining segment can be formed in particular by a perforated plate made of ferromagnetic material.
  • the screen lining segments can be formed, in particular, by a ferromagnetic perforated metal sheet with a polyurethane layer sprayed onto it.
  • the coating applied to the perforated metal sheet can have a different, in particular smaller, mesh size than the perforated metal sheet serving as a carrier.
  • the ferromagnetic coupling element can be formed by iron or an iron alloy. This creates a favorable solution with a particularly good magnetic holding force.
  • the ferromagnetic coupling element can be formed in particular by a cast iron core in the screen mesh segment and/or wear protection element; in particular, the ferromagnetic coupling element can be cast in the form of a strut or in the form of a frame in the material of the screen mesh segment and/or the wear protection element and Form reinforcement element for stiffening the screen lining segment and/or the wear protection element.
  • the screen lining segment and/or the wear protection element can be reinforced by means of the ferromagnetic coupling element.
  • the wearing parts are therefore only associated with the ferromagnetic coupling elements, which are cheaper than magnets, for example in the form of iron cores, which can easily be reused.
  • the screen lining segments and/or wear protection elements themselves can be made of non-ferromagnetic material, in particular polyurethane.
  • the ferromagnetic coupling element of a screen mat segment is formed by a perforated plate made of ferromagnetic material, which forms a carrier for screen media, in particular fabric.
  • a perforated sheet of ferromagnetic material is attached to the adapters by the magnetic coupling attached and serves as a carrier for attached to the perforated plate screen media such as fabric and the like.
  • the ferromagnetic perforated plate continues to be used as a carrier and only the screen medium attached to it is replaced like a fabric.
  • the ferromagnetic coupling element is preferably configured continuously or in sections parallel to the course of an elongate adapter.
  • the ferromagnetic coupling element can follow the course of the edges of a screen mesh segment and/or a wear protection element in order to ensure good and secure attachment of the respective screen mesh segment and/or wear protection element, especially in the edge area.
  • the course of the elongate adapter preferably also follows the course of the edge of a screen mesh segment and/or a wear protection element in order to ensure the magnetic attachment of the respective screen mesh segment and/or wear protection element precisely in the edge area.
  • the ferromagnetic coupling element can be designed in one piece or in several pieces, in particular as a cast-in core which is embedded in the matrix of a screen lining segment and/or wear protection element.
  • the advantage here is that the magnets do not have to be positioned exactly to ensure good attachment. There is therefore no need for an exact and coordinated pairing of one magnet of the adapter with a corresponding ferromagnetic coupling element if, on the one hand, several magnets are arranged on an adapter, for example in the form of a strip, and at the same time several ferromagnetic coupling elements are embedded in sections in the matrix of a screen lining segment and/or wear protection element and/or a continuous iron core is arranged, for example in the form of a frame or a reinforcement.
  • the same advantages are achieved by reinforcing the screen lining segment and/or wear protection element with ferromagnetic material. In these cases, a good and stable attachment to the magnets is guaranteed.
  • the Matrix of a Screen lining segment and/or wear protection element itself can be formed by a flexible material such as polyurethane.
  • screen lining segments form a screen floor.
  • adjacent screen lining segments can each form a form fit, in particular have a tongue and groove connection.
  • Such form-fitting connections of the screen lining segments to one another mean that a screen lining segment is also secured and fixed by the adjacent screen lining segments in addition to being magnetically fixed when it is subjected to screening material.
  • a plurality of screen lining segments preferably form a screen floor, with the last screen lining segments in the transport direction of the material to be screened being supported at the ends in the transport direction against transverse stop elements, in particular against a continuous transverse stop bar.
  • the screen lining segments can form a form fit, in particular a tongue and groove connection, with the transverse stop bar running perpendicularly to the transport direction.
  • Sieve trays are usually set up at an angle to the horizontal, with the screenings to be processed being placed on the sieve tray at the geodetically higher end of the sieve tray and discharged via the geodetically lower end of the sieve tray.
  • the last screen lining segments in the direction of transport of the screening material are supported at their ends against transverse stop elements. The arrangement of these transverse stop elements is thus transverse to the transport direction of the screenings.
  • transverse stop elements in particular a transverse stop bar that absorbs the shearing forces, can be fastened to the frame or formed by the frame itself, which accommodates the screen segments.
  • the transverse stop elements can also be formed by adapters arranged at a corresponding point on the frame.
  • a plurality of screen lining segments preferably form a screen floor, with the screen lining segments being supported laterally in the direction perpendicular to the transport direction of the screenings against longitudinal stop elements running parallel to the transport direction, in particular longitudinal stop bars, in particular that the screen lining segments form a positive fit with the longitudinal stop bars running parallel to the transport direction, in particular a tongue and groove -Make connection.
  • Longitudinal stop bars of this type which are arranged laterally next to the screening material segments in the transport direction of the screening material, serve to absorb the transverse forces and secure the screening material segments laterally in the direction perpendicular to the transport direction.
  • the longitudinal stop bars extend on the sides of the sieve base parallel to the transport direction of the material to be sieved.
  • the longitudinal stop bars can be attached to the frame or formed by the frame itself, which accommodates the screen segments.
  • the longitudinal stop strips can also be formed by adapters arranged at a corresponding point on the frame.
  • the magnet(s) and/or the ferromagnetic coupling element(s) have at least one undercut.
  • Such undercuts form in particular a sprue edge for the production of the adapter or the screen lining segments and/or the wear protection elements from plastic, in particular polyurethane, and facilitate the production process. Furthermore, this results in a better hold on the adapter or on the screen lining segment and/or on the wear protection element.
  • the screen lining segments and/or the wear protection elements and the respective adapters for fastening the screen lining segments and/or wear protection elements preferably form a form fit, in particular a tongue and groove connection.
  • Such form-fitting connections between the screen cloth segments and the respective adapter can be provided on the long side of the screen cloth segments, i.e. on the sides of the screen cloth segments that run in the installation situation in the transport direction of the screening material.
  • Such form-fitting connections between the screen cloth segments and the respective adapter can be provided on the transverse sides of the screen cloth segments, i.e. on the sides of the screen cloth segments that run perpendicular to the transport direction of the screenings when installed.
  • Such form-fitting connections between the screen mesh segments and the respective adapter are used for additional fixation of the screen mesh segments for magnetic attachment of the screen mesh segments to the adapters and prevent the screen mesh segments from slipping on the adapters in the transport direction and/or perpendicular to the transport direction of the screenings.
  • the adapters are preferably formed by adapter strips with a symmetrical arrangement of a plurality of magnets and/or the screen lining segments have a rotationally symmetrical arrangement of a plurality of ferromagnetic coupling elements and a square basic shape.
  • the adapters themselves preferably have a symmetrical structure. When using symmetrically designed adapters, they can be installed in different orientations, which makes assembly easier for the fitter.
  • the screen lining segments and/or wear protection elements preferably have a symmetrical, in particular rotationally symmetrical, structure.
  • symmetrically constructed screen lining segments and/or wear protection elements these can be installed in different orientations, which makes assembly easier for the fitter.
  • Adapter strips with a symmetrical arrangement of several magnets and screen lining segments with a square basic shape and a rotationally symmetrical arrangement of several ferromagnetic coupling elements are particularly preferably combined with one another.
  • the screen mesh segments can be attached to the adapter bars in any arrangement without it being necessary to assemble a specific orientation requirement. This means that it can be used and attached in different directions. This makes it easier to replace and assemble the screen lining segments.
  • the adapter preferably has magnets that act on both sides and/or the adapter is equipped with magnets on both sides, so that the adapter can be magnetically attached to the frame and a screen lining segment and/or a wear protection element can be magnetically attached to the adapter.
  • the further development of the adapter in such a way that the adapter itself is also attached magnetically to the frame of the screening machine and the screen lining segments and/or the wear protection elements are also attached magnetically to the adapter means that existing screening machines can be retrofitted in a particularly advantageous and simple manner. The adapter itself can thus also be attached magnetically.
  • a screening machine with a support frame for receiving a plurality of screen cloth segments to form a screen base is particularly advantageous, in which the support frame has a screen cloth fastening system according to the invention.
  • FIG 1 shows a schematic perspective view of a screen bottom formed from a plurality of screen lining segments 10, 20 of a screening machine.
  • the screen lining segments 10, 20 are subject to wear and are attached to the frame 40 of the screening machine so that they can be replaced.
  • the transport direction of the material to be screened is indicated by the arrow 5. This means that the screenings to be processed are as shown in the illustration figure 1 located at the top of the picture, the rear end of the sieve bottom applied and over that shown in the illustration figure 1 the front end of the sieve bottom located at the lower edge of the picture is transported away.
  • the screen mesh segments 10 , 20 are supported laterally against the longitudinal stop strips 41 , 42 running parallel to the transport direction 5 in order to divert any transverse forces acting on the screen mesh segments 10 , 20 to the frame 40 .
  • the last screen lining segments 10, 20 in the direction of transport of the material to be screened are supported at their ends against the continuous transverse stop strip 45 of the frame 40.
  • the shear forces acting on the screen lining segments 10, 20 are reduced taken in the transport direction of the screenings by the frame 40 of the screening machine.
  • FIG 2 shows detail view A 1 . Below the screen lining segments 10, 20, the frame 40 of the screening machine can be seen.
  • the adapter 30 is attached to the frame 40 .
  • the adapter 30 is attached to the frame 40 in a form-fitting manner.
  • the adapter 30 is made of plastic as an injection molded part. Permanent magnets 31, 32 are introduced into the matrix of the adapter 30.
  • the left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter.
  • the right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter.
  • the reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the support of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened.
  • the screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen mat segments 10, 20 are flexible, which makes it easier to remove the screen mat segments 10, 20 from the magnets 31, 32.
  • figure 3 shows a second exemplary embodiment with a frame 40 formed by a C-profile for receiving the adapter strip 30.
  • the adapter strip 30 is formed from a plastic.
  • the adapter bar 30 has undercuts which engage behind the inwardly pointing edges of the C-profile 40 and thereby fix the adapter bar 30 to the C-profile 40 in a form-fitting manner. Permanent magnets 31, 32 are introduced into the matrix of the adapter 30.
  • the attachment of the screen lining segments 10, 20 to the adapter 30 is carried out in exactly the same way as before in relation to the first exemplary embodiment according to FIG figure 2 explained.
  • On the adapter 30 are on the top of the two abutting screen mat segments 10, 20.
  • the left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter.
  • This in figure 3 The right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter.
  • the reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the C-profile of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened.
  • the screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen cloth segments 10, 20 are flexible, which makes it easier to remove the screen cloth segments 10, 20 from the magnets 31, 32.
  • figure 4 shows a third embodiment with a frame 40 formed by an angle profile for receiving the adapter bar 30.
  • the adapter bar 30 is formed by a plastic.
  • the adapter strip 30 has undercuts, which engage behind the inwardly pointing edges of bores in the angle profile 40 and thereby fix the adapter strip 30 to the C-profile 40 in a form-fitting manner.
  • Fastening pins 45 are used to secure the adapter 30 to the angle profile, which spread open those areas of the adapter 30 that reach through the holes in the angle profile 40 after the adapter 30 has been placed on the angle profile 40 .
  • the attachment of the adapter 30 is thus similar to a dowel by spreading the connecting elements and forming a form fit.
  • permanent magnets 31, 32 are introduced into the matrix of the adapter 30.
  • the left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter.
  • the right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter.
  • the reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the C-profile of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened.
  • the screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen cloth segments 10, 20 are flexible, which makes it easier to remove the screen cloth segments 10, 20 from the magnets 31, 32.

Description

Die Erfindung betrifft ein Befestigungssystem für Siebmaschinen und/oder Setzmaschinen zur Befestigung von auswechselbaren Siebbelagsegmenten und/oder auswechselbaren Verschleißschutzelementen in oder an einer Siebmaschine mit zumindest einem die Siebbelagsegmente aufnehmenden und/oder die Verschleißschutzelemente tragenden Rahmen.The invention relates to a fastening system for screening machines and/or jigs for fastening exchangeable screen lining segments and/or exchangeable wear protection elements in or on a screening machine with at least one frame accommodating the screen lining segments and/or carrying the wear protection elements.

Derartige Befestigungssysteme sowie Siebmaschinen mit daran befestigbaren und auswechselbaren Siebbelagsegmenten und auswechselbaren Verschleißschutzelementen sind bekannt. Dabei werden die Siebbelagsegmente und Verschleißschutzelemente mittels Schraubverbindungen oder Steckverbindungen an entsprechenden Aufnahmen der Siebmaschine oder Setzmaschinen befestigt.Fastening systems of this type and screening machines with screen lining segments that can be attached and exchanged thereon and exchangeable wear-protection elements are known. The screen lining segments and wear protection elements are fastened to corresponding receptacles of the screening machine or jigs by means of screw connections or plug-in connections.

Aus dem Dokument DE 88 11 079 U1 ist ein Siebboden mit einem Rahmen bekannt, an dem Träger angeordnet sind, an denen plattenförmige Siebelemente befestigt sind, wobei die Siebelemente und/oder die Träger Arretierstifte aufweisen, die formschlüssig in Gegenlöcher des Trägers und/oder der Siebelemente eingreifen.From the document DE 88 11 079 U1 a sieve bottom with a frame is known, on which carriers are arranged, to which plate-shaped sieve elements are fastened, the sieve elements and/or the carrier having locking pins which engage positively in counter-holes of the carrier and/or the sieve elements.

Aus dem Dokument SE 428 763 B ist ein Siebboden mit daran befestigten Siebelementen bekannt, welche an parallelen Balken mittels Leisten befestigt sind.From the document SE 428 763 B discloses a sieve tray with sieve elements attached thereto, which are attached to parallel beams by means of ledges.

Aus dem Dokument US 5 816 413 A ist eine Siebmaschine bekannt mit zumindest einem Rahmen, an dem ein Siebelement befestigt ist, wobei an dem Rahmen Elektromagneten angeordnet sind, welche mit Metalleckplatten zusammenwirken, um eine magnetische Befestigung zu erreichen.From the document U.S. 5,816,413A a screening machine is known with at least one frame to which a screening element is attached, with electromagnets being arranged on the frame, which interact with metal corner plates in order to achieve magnetic attachment.

Aus dem Dokument DE 67 53 672 U ist ein Siebboden mit darin eingefugten Siebelementen bekannt, wobei die Siebelemente an den Außenseiten Anker aufweisen, die mit einer Bewehrung des Siebbodens in einer Fuge zusammenwirken, welche mit aushärtendem Kunststoff ausgefüllt wird.From the document DE 67 53 672 U a sieve bottom with sieve elements inserted therein is known, the sieve elements having anchors on the outer sides which interact with a reinforcement of the sieve bottom in a joint which is filled with hardening plastic.

Aus dem Dokument DE 36 28 418 A1 ist ein Sieb mit zumindest einem Siebelement bekannt, welcher an einem Rahmen befestigt ist, wobei Dauermagnete an den Siebelementen angeordnet sind und zur Befestigung an dem Rahmen dienen.From the document DE 36 28 418 A1 a screen with at least one screen element is known, which is attached to a frame, with permanent magnets being arranged on the screen elements and serving for attachment to the frame.

Aus dem Dokument US 2011/151178 A1 ist eine Siebmaschine mit zumindest einem Rahmen bekannt, an dem ein Siebelement befestigt ist, wobei an dem Rahmen Elektromagneten angeordnet sind, welche mit Metalleckplatten zusammenwirken, um eine magnetische Befestigung zu erreichen.From the document U.S. 2011/151178 A1 a screening machine is known with at least one frame to which a screening element is attached, with electromagnets being arranged on the frame, which interact with metal corner plates in order to achieve magnetic attachment.

Nachteilig bei den bekannten Befestigungssystemen ist es daher, dass eine aufwendige Demontage und Montage notwendig ist, um verschlissene Siebbelagsegmente und Verschleißschutzelemente zu demontieren und durch neue Siebbelagsegmente und Verschleißschutzelemente zu ersetzen, die häufig mit hohem Kraftaufwand und in äußerst beengten Verhältnissen montiert werden müssen.A disadvantage of the known fastening systems is therefore that complex disassembly and assembly is necessary in order to dismantle worn screen lining segments and wear protection elements and replace them with new screen lining segments and wear protection elements, which often have to be assembled with great effort and in extremely cramped conditions.

Die Aufgabe der Erfindung ist es, diese Nachteile zu überwinden und ein Siebbelagbefestigungssystem anzugeben, welches eine einfache Demontage und Montage von Siebbelagsegmenten und Verschleißschutzelementen an einer Siebmaschine gestattet.The object of the invention is to overcome these disadvantages and to specify a screen cloth fastening system which is easy to dismantle and assembly of screen lining segments and wear protection elements on a screening machine.

Diese Aufgabe wird erfindungsgemäß durch ein Befestigungssystem gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.According to the invention, this object is achieved by a fastening system according to claim 1 . Advantageous developments of the invention are specified in the dependent claims.

Besonders vorteilhaft bei dem Befestigungssystem für Siebmaschinen zur Befestigung von auswechselbaren Siebbelagsegmenten und/oder auswechselbaren Verschleißschutzelementen in oder an einer Siebmaschine mit zumindest einem die Siebbelagsegmente aufnehmenden und/oder die Verschleißschutzelemente tragenden Rahmen, ist es, dass zur Befestigung eines Siebbelagsegmentes und/oder eines Verschleißschutzelementes zumindest ein Adapter an dem Rahmen befestigt ist, wobei der Adapter zumindest einen Magneten aufweist, wobei der Magnet mit dem Rahmen und/oder mit zumindest einem in oder an dem Siebbelagsegment und/oder Verschleißschutzelement schwingungsfest angeordneten ferromagnetischen Kopplungselement zusammenwirkt und hierdurch eine magnetische Verbindung zwischen dem Adapter und dem Rahmen und/oder zwischen dem Adapter und dem Siebbelagsegment und/oder Verschleißschutzelement herstellt.It is particularly advantageous in the fastening system for screening machines for fastening exchangeable screen lining segments and/or exchangeable wear protection elements in or on a screening machine with at least one frame accommodating the screen lining segments and/or carrying the wear protection elements, that for fastening a screen lining segment and/or a wear protection element at least an adapter is attached to the frame, wherein the adapter has at least one magnet, wherein the magnet interacts with the frame and/or with at least one ferromagnetic coupling element arranged in a vibration-proof manner in or on the screen lining segment and/or wear protection element and thereby creates a magnetic connection between the adapter and the frame and/or between the adapter and the screen lining segment and/or wear protection element.

Im erfindungsgemäßen Sinn werden die Begriffe Siebmaschine und Setzmaschine synonym verwendet.In the sense of the invention, the terms screening machine and jig are used synonymously.

Erfindungsgemäß ist somit vorgesehen, die einem Verschleiß unterliegenden Siebbelagsegmente und Verschleißschutzelemente durch eine magnetische Kopplung an Adaptern zu befestigen, wobei jeder Adapter jeweils zumindest einen Magneten aufweist, der eine magnetische Verbindung mit einem dem Siebbelagsegment und/oder Verschleißschutzelement zugeordneten ferromagnetischen Kopplungselement bildet. Der den Magneten aufweisende Adapter verbleibt bei jedem Austausch eines verschlissenen Siebbelagsegmentes oder Verschleißschutzelementes an dem Rahmen der Siebmaschine. Zum Austausch eines Verschleißteiles muss lediglich die magnetische Verbindung gelöst und ein neues Siebbelagsegment und/oder Verschleißschutzelement aufgelegt werden. Die Siebbelagsegmente und/oder Verschleißschutzelemente werden somit magnetisch an der Siebmaschine befestigt.According to the invention, it is therefore provided that the screen mesh segments and wear protection elements that are subject to wear are attached to adapters by a magnetic coupling, with each adapter having at least one magnet that forms a magnetic connection with a ferromagnetic coupling element assigned to the screen mesh segment and/or wear protection element. The adapter, which has the magnet, remains on the frame of the screening machine whenever a worn screen lining segment or wear protection element is replaced. To replace a wearing part, you only have to loosen the magnetic connection and insert a new screen lining segment and/or Wear protection element are placed. The screen lining segments and/or wear protection elements are thus attached magnetically to the screening machine.

Dabei sind ein oder mehrere ferromagnetische Kopplungselemente in jedem Siebbelagsegment und/oder jedem Verschleißschutzelement eingegossen. Insbesondere können die Siebbelagsegmente und/oder die Verschleißschutzelemente durch Polyurethan gebildet sein, in denen ferromagnetische Kopplungselemente eingegossen sind. Die ferromagnetischen Kopplungselemente können gleichzeitig mechanische Verstärkungen in den Siebbelagsegmenten und/oder Verschleißschutzelementen bilden. Das bedeutet, dass die in den Siebbelagsegmenten und/oder Verschleißschutzelementen eingegossenen ferromagnetischen Kopplungselemente gleichzeitig Armierungen der Siebbelagsegmente und/oder Verschleißschutzelemente bilden. Umgekehrt können die zur Erhöhung der Tragfestigkeit ohnehin in den Siebbelagsegmenten und/oder Verschleißschutzelementen vorgesehenen Metallarmierungen gleichzeitig als ferromagnetische Kopplungselemente zur Herstellung der magnetischen Verbindung mit den Magneten der Adapter oder Adapterleisten dienen.One or more ferromagnetic coupling elements are cast into each screen lining segment and/or each wear protection element. In particular, the screen lining segments and/or the wear protection elements can be formed from polyurethane, in which ferromagnetic coupling elements are cast. The ferromagnetic coupling elements can simultaneously form mechanical reinforcements in the screen lining segments and/or wear protection elements. This means that the ferromagnetic coupling elements cast into the screen mesh segments and/or wear protection elements simultaneously form reinforcements of the screen mesh segments and/or wear protection elements. Conversely, the metal reinforcements already provided in the screen lining segments and/or wear protection elements to increase the load-bearing capacity can simultaneously serve as ferromagnetic coupling elements for producing the magnetic connection with the magnets of the adapters or adapter strips.

Kumulativ kann der Adapter selbst magnetisch an dem Rahmen der Siebmaschine festgelegt sein. Die auswechselbaren Siebbelagsegmente und/oder die auswechselbaren Verschleißschutzelemente können magnetisch und/oder formschlüssig und/oder kraftschlüssig mittelbar oder unmittelbar an dem Adapter befestigt sein. Durch eine magnetische Befestigung des Adapters an dem Rahmen der Siebmaschine wird eine leicht montierbare und demontierbare Befestigung des Adapters realisiert.Cumulatively, the adapter itself can be magnetically fixed to the frame of the screening machine. The exchangeable screen lining segments and/or the exchangeable wear protection elements can be attached directly or indirectly to the adapter magnetically and/or with a positive fit and/or with a force fit. Fastening the adapter magnetically to the frame of the screening machine enables the adapter to be fastened easily and dismantled.

Die magnetische und/oder formschlüssige und/oder kraftschlüssige Befestigung der Siebbelagsegmente und/oder Verschleißschutzelemente an dem Adapter kann mittelbar oder unmittelbar erfolgen.The magnetic and/or positive and/or non-positive attachment of the screen lining segments and/or wear protection elements to the adapter can take place directly or indirectly.

Der Siebboden kann auch durch ein einzelnes, einstückiges Siebbelagsegment gebildet sein. Die Erfindung ist somit nicht auf eine Anwendung mit einem aus mehreren Siebbelagsegmenten gebildeten Siebboden beschränkt, wenngleich dies eine bevorzugte Ausführung darstellt.The screen base can also be formed by a single, one-piece screen lining segment. The invention is therefore not limited to an application with a screen bottom formed from a plurality of screen lining segments, although this represents a preferred embodiment.

Dadurch ist es gewährleistet, dass die als Verschleißteile geltenden Siebbelagsegmente und/oder Verschleißschutzelemente mittels der magnetischen Zusammenwirkung zwischen dem zumindest einen Magneten des an dem Rahmen der Siebmaschine befestigten Adapters und dem zumindest einen in oder an dem Siebbelagsegment und/oder Verschleißschutzelement angeordneten ferromagnetischen Kopplungselement befestigt werden können. Somit können die Siebbelagsegmente und/oder Verschleißschutzelemente auf eine einfache Art und Weise demontiert und montiert werden. Ferner kann eine derartige Adapterleiste ohne großen Aufwand an bereits bestehenden Siebmaschinen nachgerüstet werden, sodass an der Siebmaschine selbst keine Änderungen vorgenommen werden müssen.This ensures that the screen mesh segments and/or wear protection elements that are considered wearing parts are attached by means of the magnetic interaction between the at least one magnet of the adapter attached to the frame of the screening machine and the at least one ferromagnetic coupling element arranged in or on the screen mesh segment and/or wear protection element can. The screen lining segments and/or wear protection elements can thus be dismantled and assembled in a simple manner. Furthermore, such an adapter strip can be retrofitted to existing screening machines without great effort, so that no changes have to be made to the screening machine itself.

Bevorzugt ist der Adapter an einem Bauteil der Siebmaschine aus nicht ferromagnetischem Material befestigt. Insbesondere kann der Adapter kraftschlüssig und/oder stoffschlüssig und/oder formschlüssig befestigt sein. Beispielsweise handelt es sich bei Edelstahl um ein nicht ferromagnetisches Material. Ferner kann der Adapter somit als Befestigungs- und Verbindungselement dienen, indem er selbst an nichtmagnetischen Flächen und Bauteilen beispielsweise aus Edelstahl befestigt wird. Durch eine solche Anordnung des Adapters mit zumindest einem Magneten ist auch eine magnetische Befestigung von Siebbelagsegmenten und/oder Verschleißschutzelementen an Bauteilen aus einem nicht ferromagnetischen Material möglich.The adapter is preferably attached to a component of the screening machine made of non-ferromagnetic material. In particular, the adapter can be fastened with a force fit and/or with a material fit and/or with a form fit. For example, stainless steel is a non-ferromagnetic material. Furthermore, the adapter can thus serve as a fastening and connecting element by itself being fastened to non-magnetic surfaces and components made of stainless steel, for example. Such an arrangement of the adapter with at least one magnet also makes it possible to magnetically attach screen lining segments and/or wear protection elements to components made of a non-ferromagnetic material.

Alternativ zu einer Befestigung des Adapters an einem Bauteil der Siebmaschine aus nicht ferromagnetischem Material kann der Adapter an einem ferromagnetischen Bauteil der Siebmaschine befestigt sein. Insbesondere kann der Adapter magnetisch und/oder kraftschlüssig und/oder stoffschlüssig und/oder formschlüssig befestigt sein. Insbesondere kann der Adapter beidseitig wirkende Magnete aufweisen, mittels derer der Adapter selbst magnetisch an einem ferromagnetischen Bauteil der Siebmaschine befestigt wird und die gleichzeitig dazu dienen, mit zumindest einem in oder an dem Siebbelagsegment und/oder Verschleißschutzelement schwingungsfest angeordneten ferromagnetischen Kopplungselement zusammenzuwirken und hierdurch eine magnetische Verbindung zwischen dem Adapter und dem Siebbelagsegment und/oder Verschleißschutzelement herzustellen. In diesem Fall der Anordnung von beidseitig wirkenden Magneten dienen die Magnete somit sowohl der magnetischen Befestigung des Adapters an der Siebmaschine als auch der magnetischen Befestigung des Siebbelages oder des Verschleißschutzelementes an dem Adapter.As an alternative to fastening the adapter to a component of the screening machine made of non-ferromagnetic material, the adapter can be fastened to a ferromagnetic component of the screening machine. In particular, the adapter can be attached magnetically and/or force-fittingly and/or materially and/or positively. In particular, the Adapters have magnets that act on both sides, by means of which the adapter itself is magnetically attached to a ferromagnetic component of the screening machine and which at the same time serve to interact with at least one ferromagnetic coupling element arranged in a vibration-proof manner in or on the screen lining segment and/or wear protection element and thereby create a magnetic connection between the Produce adapter and the screen lining segment and/or wear protection element. In this case of the arrangement of magnets acting on both sides, the magnets serve both to magnetically attach the adapter to the screening machine and to magnetically attach the screen lining or the wear protection element to the adapter.

Insbesondere können derartige Adapter auch an Seitenteilen von Siebmaschinen angebracht sein und der Befestigung seitlicher Verschleißschutzelemente dienen. Bei diesen Seitenteilen kann es sich beispielsweise um senkrechte Begrenzungswände oberhalb des Siebbodens handeln. Ferner kann es sich um Adapter für Wellenschutzrohre handeln, die sich um das Rohr legen, dort magnetisch haften und ihrerseits ein sich um das Rohr legende Verschleißschutzelement magnetisch halten.In particular, such adapters can also be attached to the side parts of screening machines and can be used to attach lateral wear protection elements. These side parts can be, for example, vertical boundary walls above the sieve bottom. Furthermore, it can be an adapter for shaft protection tubes that wrap around the tube, adhere there magnetically and in turn magnetically hold a wear protection element that wraps around the tube.

Der Adapter kann insbesondere als längliche Adapterleiste ausgebildet sein. Der Rahmen der Siebmaschine, welcher die Adapter oder Adapterleisten aufnimmt, kann durch X-Profile und/oder C- Profile und/oder U- Profile und/oder T-Profile und/oder KR-Profile und/oder Winkelprofile gebildet sein. Der Adapter kann durch ein Kunststoffbauteil gebildet sein, insbesondere als Spritzgussteil mit einem oder mehreren eingegossenen Magneten. Der Adapter kann Bohrungen insbesondere zur Aufnahme von Befestigungsdübeln zur Befestigung des Adapters an sogenannten KR-Profilen und/oder Winkelprofilen aufweisen.The adapter can be designed in particular as an elongate adapter bar. The frame of the screening machine, which accommodates the adapter or adapter strips, can be formed by X-profiles and/or C-profiles and/or U-profiles and/or T-profiles and/or KR-profiles and/or angle profiles. The adapter can be formed by a plastic component, in particular as an injection molded part with one or more cast-in magnets. The adapter can have bores, in particular for accommodating fastening dowels for fastening the adapter to so-called KR profiles and/or angle profiles.

Die Befestigung des Adapters an dem Rahmen der Siebmaschine kann insbesondere kraftschlüssig und/oder stoffschlüssig und/oder formschlüssig erfolgen. Mit dem Begriff des Rahmens der Siebmaschine ist dabei jedes Bauteil der Siebmaschine umfasst, an welchem ein auswechselbares Siebbelagsegment und/oder ein auswechselbares Verschleißschutzelement insbesondere mittelbar befestigt wird.The attachment of the adapter to the frame of the screening machine can in particular take place in a non-positive manner and/or with a material connection and/or with a form fit. The concept of the frame of the screening machine includes every component of the screening machine on which an exchangeable Screen lining segment and / or a replaceable wear protection element is particularly attached indirectly.

Ein besonderer Vorteil der Erfindung ist es somit, dass das Befestigungssystem für Siebmaschinen zur Befestigung von auswechselbaren Siebbelagsegmenten und/oder auswechselbaren Verschleißschutzelementen durch die Anordnung von Adaptern bei vorhandenen Siebmaschinen nachgerüstet werden kann, da die Adapter an den ursprünglich für die Siebbelagsegmente und/oder Verschleißschutzelemente vorgesehenen Aufnahmen und Befestigungsorten befestigt werden können. Die Magnete werden dabei in oder an den an der Siebmaschine verbleibenden Adaptern angeordnet.A particular advantage of the invention is therefore that the fastening system for screening machines for fastening exchangeable screen lining segments and/or exchangeable wear protection elements can be retrofitted by arranging adapters in existing screening machines, since the adapters can be attached to the ones originally provided for the screen lining segments and/or wear protection elements Recordings and mounting locations can be attached. The magnets are arranged in or on the adapters that remain on the screening machine.

Vorzugsweise weist jeder Adapter eine Mehrzahl von insbesondere äquidistant angeordneten Magneten auf. Durch die Anordnung mehrerer Magneten bei jedem Adapter, insbesondere bei Adaptern in Form von länglichen Adapterleisten, kann die magnetische Haltekraft gesteigert und gleichmäßig beispielsweise entlang der Kanten der zu befestigenden Siebbelagsegmente und/oder Verschleißschutzelemente ausgeübt werden.Each adapter preferably has a plurality of magnets, which are arranged in particular equidistantly. By arranging several magnets for each adapter, especially for adapters in the form of elongated adapter strips, the magnetic holding force can be increased and exerted evenly, for example, along the edges of the screen mesh segments and/or wear protection elements to be fastened.

Vorzugsweise sind ein oder mehrere ferromagnetische Kopplungselemente durch Montageleisten und/oder Montagerahmen gebildet, die magnetisch an dem Adapter festgelegt sind, wobei Siebbelagsegmente und/oder Verschleißschutzelemente kraftschlüssig und/oder formschlüssig schwingungsfest an den Montageleisten und/oder Montagerahmen festgelegt sind.One or more ferromagnetic coupling elements are preferably formed by mounting rails and/or mounting frames that are magnetically fixed to the adapter, with screen lining segments and/or wear protection elements being non-positively and/or positively fixed to the mounting rails and/or mounting frame in a vibration-proof manner.

Es können somit eine oder mehrere Montageleisten und/oder Montagerahmen aus ferromagnetischem Material zur Herstellung der magnetischen Verbindung mit den Adaptern angeordnet sein, wobei die Siebbelagsegmente und/oder Verschleißschutzelemente kraftschlüssig und/oder formschlüssig schwingungsfest und insbesondere auswechselbar an den Montageleisten und/oder Montagerahmen befestigt sind.One or more mounting rails and/or mounting frames made of ferromagnetic material can thus be arranged to produce the magnetic connection with the adapters, with the screen lining segments and/or wear protection elements being non-positively and/or positively secured to the mounting rails and/or mounting frame in a vibration-resistant and, in particular, exchangeable manner .

Ferner kann das Siebbelagsegment insbesondere durch ein Lochblech aus ferromagnetischem Material gebildet sein. Die Siebbelagsegmente können insbesondere durch ein ferromagnetisches Lochblech mit einer darauf aufgespritzten Polyurethanschicht gebildet sein. Bei einem beschichteten Lochblech kann die auf das Lochblech aufgebrachte Beschichtung eine andere, insbesondere kleinere Maschenweite aufweisen, als das als Träger dienende Lochblech.Furthermore, the screen lining segment can be formed in particular by a perforated plate made of ferromagnetic material. The screen lining segments can be formed, in particular, by a ferromagnetic perforated metal sheet with a polyurethane layer sprayed onto it. In the case of a coated perforated metal sheet, the coating applied to the perforated metal sheet can have a different, in particular smaller, mesh size than the perforated metal sheet serving as a carrier.

Das ferromagnetische Kopplungselement kann durch Eisen oder eine Eisenlegierung gebildet sein. Hierdurch wird eine günstige Lösung mit einer besonders guten magnetischen Haltekraft geschaffen. Wie zuvor erläutert kann das ferromagnetische Kopplungselement insbesondere durch einen eingegossenen Eisenkern in dem Siebbelagsegment und/oder Verschleißschutzelement gebildet sein, insbesondere kann das ferromagnetische Kopplungselement in Form einer Strebe oder in Form eines Rahmens in dem Material des Siebbelagsegmentes und/oder des Verschleißschutzelementes eingegossen sein und ein Verstärkungselement zur Aussteifung des Siebbelagsegmentes und/oder des Verschleißschutzelementes bilden. Insbesondere kann das Siebbelagsegment und/oder das Verschleißschutzelement mittels des ferromagnetischen Kopplungselementes armiert sein.The ferromagnetic coupling element can be formed by iron or an iron alloy. This creates a favorable solution with a particularly good magnetic holding force. As explained above, the ferromagnetic coupling element can be formed in particular by a cast iron core in the screen mesh segment and/or wear protection element; in particular, the ferromagnetic coupling element can be cast in the form of a strut or in the form of a frame in the material of the screen mesh segment and/or the wear protection element and Form reinforcement element for stiffening the screen lining segment and/or the wear protection element. In particular, the screen lining segment and/or the wear protection element can be reinforced by means of the ferromagnetic coupling element.

Den Verschleißteilen sind somit lediglich die gegenüber Magneten preiswerteren ferromagnetische Kopplungselemente beispielsweise in Form von Eisenkernen zugeordnet, die auf leichte Weise wiederverwendet werden können. Die Siebbelagsegmente und/oder Verschleißschutzelemente selbst können aus nicht ferromagnetischem Material, insbesondere Polyurethan gebildet sein.The wearing parts are therefore only associated with the ferromagnetic coupling elements, which are cheaper than magnets, for example in the form of iron cores, which can easily be reused. The screen lining segments and/or wear protection elements themselves can be made of non-ferromagnetic material, in particular polyurethane.

In einer bevorzugten Ausführungsform ist das ferromagnetische Kopplungselement eines Siebbelagsegmentes durch ein Lochblech aus ferromagnetischem Material gebildet, welches einen Träger für Siebmedien, insbesondere Gewebe, bildet. In diesem Fall wird ein Lochblech aus ferromagnetischem Material durch die magnetische Kopplung an den Adaptern befestigt und dient als Träger für an dem Lochblech befestigte Siebmedien, wie beispielsweise Gewebe und dergleichen. Beim Austausch verschlissener Siebmedien wird das ferromagnetische Lochblech als Träger weiter verwendet und nur das darauf befestigte Siebmedium wie ein Gewebe ersetzt.In a preferred embodiment, the ferromagnetic coupling element of a screen mat segment is formed by a perforated plate made of ferromagnetic material, which forms a carrier for screen media, in particular fabric. In this case, a perforated sheet of ferromagnetic material is attached to the adapters by the magnetic coupling attached and serves as a carrier for attached to the perforated plate screen media such as fabric and the like. When replacing worn screen media, the ferromagnetic perforated plate continues to be used as a carrier and only the screen medium attached to it is replaced like a fabric.

Bevorzugt ist das ferromagnetische Kopplungselement parallel zum Verlauf eines länglichen Adapters durchgehend oder abschnittweise ausgebildet. Insbesondere kann das ferromagnetische Kopplungselement dem Kantenverlauf eines Siebbelagsegmentes und/oder eines Verschleißschutzelementes folgen, um eine gute und sichere Befestigung des jeweiligen Siebbelagsegmentes und/oder Verschleißschutzelementes gerade im Kantenbereich zu gewährleisten. Der Verlauf des länglichen Adapters folgt dabei vorzugsweise ebenfalls dem Kantenverlauf eines Siebbelagsegmentes und/oder eines Verschleißschutzelementes, um die magnetische Befestigung des jeweiligen Siebbelagsegmentes und/oder Verschleißschutzelementes gerade im Kantenbereich zu gewährleisten.The ferromagnetic coupling element is preferably configured continuously or in sections parallel to the course of an elongate adapter. In particular, the ferromagnetic coupling element can follow the course of the edges of a screen mesh segment and/or a wear protection element in order to ensure good and secure attachment of the respective screen mesh segment and/or wear protection element, especially in the edge area. The course of the elongate adapter preferably also follows the course of the edge of a screen mesh segment and/or a wear protection element in order to ensure the magnetic attachment of the respective screen mesh segment and/or wear protection element precisely in the edge area.

Das ferromagnetische Kopplungselement kann einstückig oder mehrstückig ausgebildet sein, insbesondere als eingegossener Kern, welcher in die Matrix eines Siebbelagsegmentes und/oder Verschleißschutzelementes eingebettet ist. Vorteilhaft ist dabei, dass die Magnete nicht exakt positioniert werden müssen, um eine gute Befestigung zu gewährleisten. Es bedarf somit keiner exakten und abgestimmten Paarung jeweils eines Magneten des Adapters mit einem korrespondierenden ferromagnetischen Kopplungselement, wenn einerseits mehrere Magnete an einem beispielsweise leistenförmigen Adapter angeordnet sind und gleichzeitig mehrere ferromagnetische Kopplungselemente abschnittsweise in der Matrix eines Siebbelagsegmentes und/oder Verschleißschutzelementes eingebettet sind und/oder ein durchgehender Eisenkern beispielsweise in Form eines Rahmens oder einer Verstärkung angeordnet ist. Dieselben Vorteile werden durch eine Armierung aus ferromagnetischem Material des Siebbelagsegmentes und/oder Verschleißschutzelementes erzielt. In diesen Fällen ist eine gute und standfeste Befestigung an den Magneten gewährleistet. Die Matrix eines Siebbelagsegmentes und/oder Verschleißschutzelementes selbst kann dabei durch ein flexibles Material wie beispielsweise Polyurethan gebildet sein.The ferromagnetic coupling element can be designed in one piece or in several pieces, in particular as a cast-in core which is embedded in the matrix of a screen lining segment and/or wear protection element. The advantage here is that the magnets do not have to be positioned exactly to ensure good attachment. There is therefore no need for an exact and coordinated pairing of one magnet of the adapter with a corresponding ferromagnetic coupling element if, on the one hand, several magnets are arranged on an adapter, for example in the form of a strip, and at the same time several ferromagnetic coupling elements are embedded in sections in the matrix of a screen lining segment and/or wear protection element and/or a continuous iron core is arranged, for example in the form of a frame or a reinforcement. The same advantages are achieved by reinforcing the screen lining segment and/or wear protection element with ferromagnetic material. In these cases, a good and stable attachment to the magnets is guaranteed. The Matrix of a Screen lining segment and/or wear protection element itself can be formed by a flexible material such as polyurethane.

In einer bevorzugten Ausführungsform bilden mehrere Siebbelagsegmente einen Siebboden. Insbesondere können dabei benachbarte Siebbelagsegmente jeweils einen Formschluss bilden, insbesondere eine Nut-Feder-Verbindung aufweisen. Durch derartige formschlüssige Verbindungen der Siebbelagsegmente untereinander wird ein Siebbelagsegment bei einer Beaufschlagung mit Siebgut zusätzlich zur magnetischen Fixierung auch durch die benachbarten Siebbelagsegmente gesichert und fixiert.In a preferred embodiment, several screen lining segments form a screen floor. In particular, adjacent screen lining segments can each form a form fit, in particular have a tongue and groove connection. Such form-fitting connections of the screen lining segments to one another mean that a screen lining segment is also secured and fixed by the adjacent screen lining segments in addition to being magnetically fixed when it is subjected to screening material.

Vorzugsweise bilden mehrere Siebbelagsegmente einen Siebboden, wobei die in Transportrichtung des Siebgutes letzten Siebbelagsegmente sich in Transportrichtung endseitig gegen Queranschlagelemente abstützen, insbesondere gegen eine durchgehende Queranschlagleiste abstützen. Insbesondere können die Siebbelagsegmente mit der senkrecht zur Transportrichtung verlaufenden Queranschlagleiste einen Formschluss, insbesondere eine Nut-Feder-Verbindung bilden.A plurality of screen lining segments preferably form a screen floor, with the last screen lining segments in the transport direction of the material to be screened being supported at the ends in the transport direction against transverse stop elements, in particular against a continuous transverse stop bar. In particular, the screen lining segments can form a form fit, in particular a tongue and groove connection, with the transverse stop bar running perpendicularly to the transport direction.

Siebböden werden üblicherweise unter einem Winkel gegen die Horizontale aufgestellt wobei das aufzubereitende Siebgut an dem geodätisch höher gelegenen Ende des Siebbodens auf den Siebboden aufgebracht und über das geodätisch tiefer gelegene Ende des Siebbodens abgeführt wird. Zur Aufnahme der Schubkräfte in Transportrichtung ist es daher vorteilhaft, wenn sich die in Transportrichtung des Siebgutes letzten Siebbelagsegmente endseitig gegen Queranschlagelemente abstützen. Die Anordnung dieser Queranschlagelemente ist somit quer zur Transportrichtung des Siebgutes.Sieve trays are usually set up at an angle to the horizontal, with the screenings to be processed being placed on the sieve tray at the geodetically higher end of the sieve tray and discharged via the geodetically lower end of the sieve tray. In order to absorb the shearing forces in the direction of transport, it is therefore advantageous if the last screen lining segments in the direction of transport of the screening material are supported at their ends against transverse stop elements. The arrangement of these transverse stop elements is thus transverse to the transport direction of the screenings.

Diese Queranschlagelemente, insbesondere eine die Schubkräfte aufnehmende Queranschlagleiste, können am Rahmen befestigt oder durch den Rahmen, welcher die Siebsegmente aufnimmt, selbst gebildet sein. Insbesondere können die Queranschlagelemente ferner durch an entsprechender Stelle des Rahmens angeordnete Adapter gebildet sein.These transverse stop elements, in particular a transverse stop bar that absorbs the shearing forces, can be fastened to the frame or formed by the frame itself, which accommodates the screen segments. In particular, the transverse stop elements can also be formed by adapters arranged at a corresponding point on the frame.

Vorzugsweise bilden mehrere Siebbelagsegmente einen Siebboden, wobei die Siebbelagsegmente sich seitlich in Richtung senkrecht zur Transportrichtung des Siebgutes gegen parallel zur Transportrichtung verlaufende Längsanschlagelemente, insbesondere Längsanschlagleisten, abstützen, insbesondere dass die Siebbelagsegmente mit den parallel zur Transportrichtung verlaufenden Längsanschlagleisten einen Formschluss, insbesondere eine Nut-Feder-Verbindung bilden.A plurality of screen lining segments preferably form a screen floor, with the screen lining segments being supported laterally in the direction perpendicular to the transport direction of the screenings against longitudinal stop elements running parallel to the transport direction, in particular longitudinal stop bars, in particular that the screen lining segments form a positive fit with the longitudinal stop bars running parallel to the transport direction, in particular a tongue and groove -Make connection.

Derartige in Transportrichtung des Siebgutes seitlich neben den Siebbelagsegmenten angeordnete Längsanschlagleisten dienen der Aufnahme der Querkräfte und sichern die Siebbelagsegmente in seitlich in Richtung senkrecht zur Transportrichtung. Die Längsanschlagleisten erstrecken sich an den Seiten des Siebbodens parallel zur Transportrichtung des Siebgutes. Die Längsanschlagleisten können am Rahmen befestigt oder durch den Rahmen, welcher die Siebsegmente aufnimmt, selbst gebildet sein. Insbesondere können die Längsanschlagleisten ferner durch an entsprechender Stelle des Rahmens angeordnete Adapter gebildet sein.Longitudinal stop bars of this type, which are arranged laterally next to the screening material segments in the transport direction of the screening material, serve to absorb the transverse forces and secure the screening material segments laterally in the direction perpendicular to the transport direction. The longitudinal stop bars extend on the sides of the sieve base parallel to the transport direction of the material to be sieved. The longitudinal stop bars can be attached to the frame or formed by the frame itself, which accommodates the screen segments. In particular, the longitudinal stop strips can also be formed by adapters arranged at a corresponding point on the frame.

In einer bevorzugten Ausführungsform weisen der/die Magnete und/oder der/die ferromagnetischen Kopplungselemente zumindest eine Hinterschneidung auf. Derartige Hinterschneidungen bilden insbesondere eine Angusskante für die Fertigung der Adapter bzw. der Siebbelagsegmente und/oder der Verschleißschutzelemente aus Kunststoff, insbesondere Polyurethan, und erleichtern den Fertigungsprozess. Ferner ergibt sich hierdurch ein besserer Halt am Adapter bzw. am Siebbelagsegment und/oder am Verschleißschutzelement.In a preferred embodiment, the magnet(s) and/or the ferromagnetic coupling element(s) have at least one undercut. Such undercuts form in particular a sprue edge for the production of the adapter or the screen lining segments and/or the wear protection elements from plastic, in particular polyurethane, and facilitate the production process. Furthermore, this results in a better hold on the adapter or on the screen lining segment and/or on the wear protection element.

Bevorzugt bilden die Siebbelagsegmente und/oder die Verschleißschutzelemente und die jeweiligen Adapter zur Befestigung der Siebbelagsegmente und/oder Verschleißschutzelemente einen Formschluss, insbesondere eine Nut-Feder-Verbindung. Durch einen derartigen Formschluss zusätzlich zur magnetischen Befestigung der Siebbelagsegmente und/oder der Verschleißschutzelemente an dem jeweiligen Adapter wird die Tragfähigkeit der Verbindung der Siebbelagsegmente und/oder der Verschleißschutzelemente an den Adaptern weiter erhöht.The screen lining segments and/or the wear protection elements and the respective adapters for fastening the screen lining segments and/or wear protection elements preferably form a form fit, in particular a tongue and groove connection. By such a form fit in addition to the magnetic attachment of the screen lining segments and / or the wear protection elements on the respective adapter, the carrying capacity of the Connection of the screen lining segments and/or the wear protection elements on the adapters is further increased.

Derartige formschlüssige Verbindungen zwischen den Siebbelagsegmenten und dem jeweiligen Adapter können an der Längsseite der Siebbelagsegmente vorgesehen sein, d.h. an den Seiten der Siebbelagsegmente, die in der Einbausituation in Transportrichtung des Siebgutes verlaufen. Alternativ oder kumulativ können derartige formschlüssige Verbindungen zwischen den Siebbelagsegmenten und dem jeweiligen Adapter an den Querseiten der Siebbelagsegmente vorgesehen sein, d.h. an den Seiten der Siebbelagsegmente, die in der Einbausituation senkrecht zur Transportrichtung des Siebgutes verlaufen. Derartige formschlüssige Verbindungen zwischen den Siebbelagsegmenten und dem jeweiligen Adapter dienen der zusätzlichen Fixierung der Siebbelagsegmente kumulativ zur magnetischen Befestigung der Siebbelagsegmente an den Adaptern und verhindern ein Verrutschen der Siebbelagsegmente auf den Adaptern in Transportrichtung und/oder senkrecht zur Transportrichtung des Siebgutes.Such form-fitting connections between the screen cloth segments and the respective adapter can be provided on the long side of the screen cloth segments, i.e. on the sides of the screen cloth segments that run in the installation situation in the transport direction of the screening material. Alternatively or cumulatively, such form-fitting connections between the screen cloth segments and the respective adapter can be provided on the transverse sides of the screen cloth segments, i.e. on the sides of the screen cloth segments that run perpendicular to the transport direction of the screenings when installed. Such form-fitting connections between the screen mesh segments and the respective adapter are used for additional fixation of the screen mesh segments for magnetic attachment of the screen mesh segments to the adapters and prevent the screen mesh segments from slipping on the adapters in the transport direction and/or perpendicular to the transport direction of the screenings.

Vorzugsweise sind die Adapter durch Adapterleisten mit einer symmetrischen Anordnung mehrerer Magnete gebildet und/oder die Siebbelagsegmente weisen eine rotationssymmetrische Anordnung mehrerer ferromagnetischer Kopplungselemente und eine quadratische Grundform auf.The adapters are preferably formed by adapter strips with a symmetrical arrangement of a plurality of magnets and/or the screen lining segments have a rotationally symmetrical arrangement of a plurality of ferromagnetic coupling elements and a square basic shape.

Vorzugsweise weisen die Adapter selbst einen symmetrischen Aufbau auf. Bei Verwendung symmetrisch aufgebauter Adapter können diese in verschiedenen Orientierungen eingebaut werden, wodurch die Montage für den Monteur erleichtert wird.The adapters themselves preferably have a symmetrical structure. When using symmetrically designed adapters, they can be installed in different orientations, which makes assembly easier for the fitter.

Vorzugsweise weisen die Siebbelagsegmente und/oder Verschleißschutzelemente einen symmetrischen, insbesondere rotationssymmetrischen Aufbau auf. Bei Verwendung symmetrisch aufgebauter Siebbelagsegmente und/oder Verschleißschutzelemente können diese in verschiedenen Orientierungen eingebaut werden, wodurch die Montage für den Monteur erleichtert wird.The screen lining segments and/or wear protection elements preferably have a symmetrical, in particular rotationally symmetrical, structure. When using symmetrically constructed screen lining segments and/or wear protection elements, these can be installed in different orientations, which makes assembly easier for the fitter.

Besonders bevorzugt werden Adapterleisten mit einer symmetrischen Anordnung mehrerer Magnete und Siebbelagsegmente mit einer quadratischen Grundform und einer rotationssymmetrischen Anordnung mehrerer ferromagnetischer Kopplungselemente miteinander kombiniert. Durch eine derartige Gestaltung der Adapter als Adapterleisten zur Anbringung am Rahmen der Siebmaschine einerseits und einer quadratischen Ausführung der Siebbelagsegmente und einer entsprechenden symmetrischen Anordnung der ferromagnetischen Kopplungselemente andererseits können die Siebbelagsegmente in beliebiger Anordnung an den Adapterleisten befestigt werden, ohne dass es zur Montage einer bestimmten Ausrichtung bedarf. Dies bedeutet, dass eine Verwendung und Anbringung in verschiedenen Richtungen möglich ist. Hierdurch wird das Auswechseln und Montieren der Siebbelagsegmente erleichtert.Adapter strips with a symmetrical arrangement of several magnets and screen lining segments with a square basic shape and a rotationally symmetrical arrangement of several ferromagnetic coupling elements are particularly preferably combined with one another. By designing the adapters in this way as adapter bars for attachment to the frame of the screening machine on the one hand and a square design of the screen mesh segments and a corresponding symmetrical arrangement of the ferromagnetic coupling elements on the other hand, the screen mesh segments can be attached to the adapter bars in any arrangement without it being necessary to assemble a specific orientation requirement. This means that it can be used and attached in different directions. This makes it easier to replace and assemble the screen lining segments.

Vorzugsweise weist der Adapter beidseitig wirkende Magnete auf und/oder der Adapter ist beidseitig mit Magneten ausgestattet, sodass eine magnetische Befestigung des Adapters an dem Rahmen und eine magnetische Befestigung eines Siebbelagsegmentes und/oder eines Verschleißschutzelementes an dem Adapter erfolgen kann. Durch die Weiterbildung des Adapters dahingehend, dass der Adapter selbst ebenfalls magnetisch an dem Rahmen der Siebmaschine befestigt wird und ferner die Siebbelagsegmente und/oder die Verschleißschutzelemente magnetisch an dem Adapter befestigt werden, ist eine Nachrüstung vorhandener Siebmaschinen auf eine besonders vorteilhafte und einfache Weise möglich. Es kann somit auch der Adapter selbst magnetisch befestigt sein.The adapter preferably has magnets that act on both sides and/or the adapter is equipped with magnets on both sides, so that the adapter can be magnetically attached to the frame and a screen lining segment and/or a wear protection element can be magnetically attached to the adapter. The further development of the adapter in such a way that the adapter itself is also attached magnetically to the frame of the screening machine and the screen lining segments and/or the wear protection elements are also attached magnetically to the adapter means that existing screening machines can be retrofitted in a particularly advantageous and simple manner. The adapter itself can thus also be attached magnetically.

Besonders vorteilhaft ist eine Siebmaschine mit einem Tragrahmen zur Aufnahme einer Mehrzahl von Siebbelagsegmenten zur Bildung eines Siebbodens, bei der der Tragrahmen ein erfindungsgemäßes Siebbelagbefestigungssystem aufweist.A screening machine with a support frame for receiving a plurality of screen cloth segments to form a screen base is particularly advantageous, in which the support frame has a screen cloth fastening system according to the invention.

Drei Ausführungsbeispiele der Erfindung sind in den Figuren dargestellt und werden nachfolgend näher erläutert. Es zeigen:

Fig. 1
Eine schematische perspektivische Ansicht eines aus mehreren Siebbelagsegmenten gebildeten Siebbodens;
Fig. 2
die Detailansicht A nach Fig. 1;
Fig. 3
ein zweites Ausführungsbeispiel mit einem durch ein C-Profil gebildeten Rahmen zur Aufnahme der Adapterleiste;
Fig. 4
ein drittes Ausführungsbeispiel mit einem durch ein Winkelprofil gebildeten Rahmen zur Aufnahme der Adapterleiste.
Three exemplary embodiments of the invention are shown in the figures and are explained in more detail below. Show it:
1
A schematic perspective view of a screen bottom formed from several screen lining segments;
2
the detail view A after 1 ;
3
a second embodiment with a frame formed by a C-profile for receiving the adapter strip;
4
a third embodiment with a frame formed by an angle profile for receiving the adapter strip.

In den Figuren sind identische Bauteile mit identischen Bezugszeichen versehen.Identical components are provided with identical reference symbols in the figures.

Figur 1 zeigt eine schematische perspektivische Ansicht eines aus mehreren Siebbelagsegmenten 10, 20 gebildeten Siebbodens einer Siebmaschine. Die Siebbelagsegmente 10, 20 unterliegen einem Verschleiß und sind auswechselbar an dem Rahmen 40 der Siebmaschine befestigt. Die Transportrichtung des Siebgutes ist durch den Pfeil 5 gekennzeichnet. Das bedeutet, dass das aufzubereitende Siebgut in dem in der Darstellung nach Figur 1 am oberen Bildrand gelegene hintere Ende des Siebbodens aufgebracht und über das in der Darstellung nach Figur 1 am unteren Bildrand gelegene vordere Ende des Siebbodens abtransportiert wird. figure 1 shows a schematic perspective view of a screen bottom formed from a plurality of screen lining segments 10, 20 of a screening machine. The screen lining segments 10, 20 are subject to wear and are attached to the frame 40 of the screening machine so that they can be replaced. The transport direction of the material to be screened is indicated by the arrow 5. This means that the screenings to be processed are as shown in the illustration figure 1 located at the top of the picture, the rear end of the sieve bottom applied and over that shown in the illustration figure 1 the front end of the sieve bottom located at the lower edge of the picture is transported away.

Seitlich stützen sich die Siebbelagsegmente 10, 20 gegen die parallel zur Transportrichtung 5 verlaufenden Längsanschlagleisten 41, 42 ab, um etwaige auf die Siebbelagsegmenten 10, 20 wirkende Querkräfte auf den Rahmen 40 abzuleiten.The screen mesh segments 10 , 20 are supported laterally against the longitudinal stop strips 41 , 42 running parallel to the transport direction 5 in order to divert any transverse forces acting on the screen mesh segments 10 , 20 to the frame 40 .

Zur Aufnahme der Schubkräfte in Transportrichtung des Siebgutes stützen sich die in Transportrichtung des Siebgutes letzten Siebbelagsegmente 10, 20 endseitig gegen die durchgehende Queranschlagleiste 45 des Rahmens 40 ab. Hierdurch werden die auf die Siebbelagsegmente 10, 20 wirkenden Schubkräfte in Transportrichtung des Siebgutes durch den Rahmen 40 der Siebmaschine aufgenommen.To absorb the shearing forces in the direction of transport of the material to be screened, the last screen lining segments 10, 20 in the direction of transport of the material to be screened are supported at their ends against the continuous transverse stop strip 45 of the frame 40. As a result, the shear forces acting on the screen lining segments 10, 20 are reduced taken in the transport direction of the screenings by the frame 40 of the screening machine.

Figur 2. zeigt die Detailansicht A nach Fig. 1. Unterhalb der Siebbelagsegmente 10, 20 ist erkennbar der Rahmen 40 der Siebmaschine. An dem Rahmen 40 ist der Adapter 30 befestigt. Der Adapter 30 ist an dem Rahmen 40 formschlüssig befestigt. Der Adapter 30 ist aus Kunststoff als Spritzgussteil ausgeführt. In die Matrix des Adapters 30 sind Dauermagnete 31, 32 eingebracht. figure 2 . shows detail view A 1 . Below the screen lining segments 10, 20, the frame 40 of the screening machine can be seen. The adapter 30 is attached to the frame 40 . The adapter 30 is attached to the frame 40 in a form-fitting manner. The adapter 30 is made of plastic as an injection molded part. Permanent magnets 31, 32 are introduced into the matrix of the adapter 30.

Auf dem Adapter 30 liegen auf der Oberseite die beiden aneinander stoßenden Siebbelagsegmente 10, 20 auf. Das in Figur 2 linke Siebbelagsegment 10 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 11 bildet, welches eine magnetische Verbindung mit dem Magneten 31 des Adapters bildet. Das in Figur 2 rechte Siebbelagsegment 20 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 21 bildet, welches eine magnetische Verbindung mit dem Magneten 32 des Adapters bildet. Die Armierungen bilden Verstärkungen in den Siebbelagsegmenten 10, 20 und verlaufen parallel zum Träger des Rahmens 40, an welchem der ebenfalls als Leiste ausgebildete Adapter 30 befestigt ist. Die Siebbelagsegmente 10, 20 bestehen aus Polyurethan, wobei die Armierungen eingegossen sind. Durch den Verlauf der Armierungen parallel zum Verlauf des Rahmens 40 sind die Siebbelagsegmente 10, 20 biegsam, wodurch ein Abnehmen der Siebbelagsegmente 10, 20 von den Magneten 31, 32 erleichtert wird.On the adapter 30 are on the top of the two abutting screen mat segments 10, 20. This in figure 2 The left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter. This in figure 2 The right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter. The reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the support of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen mat segments 10, 20 are flexible, which makes it easier to remove the screen mat segments 10, 20 from the magnets 31, 32.

Figur 3 zeigt ein zweites Ausführungsbeispiel mit einem durch ein C-Profil gebildeten Rahmen 40 zur Aufnahme der Adapterleiste 30. Die Adapterleiste 30 ist durch einen Kunststoff gebildet. Die Adapterleiste 30 weist Hinterschneidungen auf, welche die nach innen weisenden Kanten des C-Profils 40 hintergreifen und hierdurch die Adapterleiste 30 formschlüssig an dem C-Profil 40 festlegen. In die Matrix des Adapters 30 sind Dauermagnete 31, 32 eingebracht. figure 3 shows a second exemplary embodiment with a frame 40 formed by a C-profile for receiving the adapter strip 30. The adapter strip 30 is formed from a plastic. The adapter bar 30 has undercuts which engage behind the inwardly pointing edges of the C-profile 40 and thereby fix the adapter bar 30 to the C-profile 40 in a form-fitting manner. Permanent magnets 31, 32 are introduced into the matrix of the adapter 30.

Die Befestigung der Siebbelagsegmente 10, 20 an dem Adapter 30 erfolgt genauso wie zuvor in Bezug auf das erste Ausführungsbeispiel gemäß Figur 2 erläutert. Auf dem Adapter 30 liegen auf der Oberseite die beiden aneinander stoßenden Siebbelagsegmente 10, 20 auf. Das in Figur 3 linke Siebbelagsegment 10 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 11 bildet, welches eine magnetische Verbindung mit dem Magneten 31 des Adapters bildet. Das in Figur 3 rechte Siebbelagsegment 20 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 21 bildet, welches eine magnetische Verbindung mit dem Magneten 32 des Adapters bildet. Die Armierungen bilden Verstärkungen in den Siebbelagsegmenten 10, 20 und verlaufen parallel zum C-Profil des Rahmens 40, an welchem der ebenfalls als Leiste ausgebildete Adapter 30 befestigt ist. Die Siebbelagsegmente 10, 20 bestehen aus Polyurethan, wobei die Armierungen eingegossen sind. Durch den Verlauf der Armierungen parallel zum Verlauf des Rahmens 40 sind die Siebbelagsegmente 10, 20 biegsam, wodurch das Abnehmen der Siebbelagsegmente 10, 20 von den Magneten 31, 32 erleichtert wird.The attachment of the screen lining segments 10, 20 to the adapter 30 is carried out in exactly the same way as before in relation to the first exemplary embodiment according to FIG figure 2 explained. On the adapter 30 are on the top of the two abutting screen mat segments 10, 20. This in figure 3 The left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter. This in figure 3 The right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter. The reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the C-profile of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen cloth segments 10, 20 are flexible, which makes it easier to remove the screen cloth segments 10, 20 from the magnets 31, 32.

Figur 4 zeigt ein drittes Ausführungsbeispiel mit einem durch ein Winkelprofil gebildeten Rahmen 40 zur Aufnahme der Adapterleiste 30. Die Adapterleiste 30 ist durch einen Kunststoff gebildet. Die Adapterleiste 30 weist Hinterschneidungen auf, welche die nach innen weisenden Kanten von Bohrungen in dem Winkelprofil 40 hintergreifen und hierdurch die Adapterleiste 30 formschlüssig an dem C-Profil 40 festlegen. Zur Sicherung des Adapters 30 an dem Winkelprofil sind Befestigungsstifte 45 eingesetzt, welche jene Bereiche des Adapters 30 aufspreizen, die die Bohrungen in dem Winkelprofil 40 durchgreifen, nachdem der Adapter 30 auf das Winkelprofil 40 aufgesetzt wurde. Die Befestigung des Adapters 30 erfolgt somit ähnlich wie bei einem Dübel durch Aufspreizen der Verbindungselemente und Bildung eines Formschlusses. In die Matrix des Adapters 30 sind wiederum Dauermagnete 31, 32 eingebracht. figure 4 shows a third embodiment with a frame 40 formed by an angle profile for receiving the adapter bar 30. The adapter bar 30 is formed by a plastic. The adapter strip 30 has undercuts, which engage behind the inwardly pointing edges of bores in the angle profile 40 and thereby fix the adapter strip 30 to the C-profile 40 in a form-fitting manner. Fastening pins 45 are used to secure the adapter 30 to the angle profile, which spread open those areas of the adapter 30 that reach through the holes in the angle profile 40 after the adapter 30 has been placed on the angle profile 40 . The attachment of the adapter 30 is thus similar to a dowel by spreading the connecting elements and forming a form fit. In turn, permanent magnets 31, 32 are introduced into the matrix of the adapter 30.

Die Befestigung der Siebbelagsegmente 10, 20 an dem Adapter 30 erfolgt ebenfalls wie zuvor in Bezug auf das erste Ausführungsbeispiel gemäß Figur 2 und das zweite Ausführungsbeispiel gemäß Figur 3 erläutert.The attachment of the screen lining segments 10, 20 to the adapter 30 is also carried out as before in relation to the first embodiment according to FIG figure 2 and the second embodiment according to FIG figure 3 explained.

Auf dem Adapter 30 liegen auf der Oberseite die beiden aneinander stoßenden Siebbelagsegmente 10, 20 auf. Das in Figur 4 linke Siebbelagsegment 10 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 11 bildet, welches eine magnetische Verbindung mit dem Magneten 31 des Adapters bildet. Das in Figur 4 rechte Siebbelagsegment 20 weist eine Eisenarmierung auf, die ein ferromagnetisches Kopplungselement 21 bildet, welches eine magnetische Verbindung mit dem Magneten 32 des Adapters bildet. Die Armierungen bilden Verstärkungen in den Siebbelagsegmenten 10, 20 und verlaufen parallel zum C-Profil des Rahmens 40, an welchem der ebenfalls als Leiste ausgebildete Adapter 30 befestigt ist. Die Siebbelagsegmente 10, 20 bestehen aus Polyurethan, wobei die Armierungen eingegossen sind. Durch den Verlauf der Armierungen parallel zum Verlauf des Rahmens 40 sind die Siebbelagsegmente 10, 20 biegsam, wodurch das Abnehmen der Siebbelagsegmente 10, 20 von den Magneten 31, 32 erleichtert wird.On the adapter 30 are on the top of the two abutting screen mat segments 10, 20. This in figure 4 The left screen cloth segment 10 has an iron reinforcement that forms a ferromagnetic coupling element 11 that forms a magnetic connection with the magnet 31 of the adapter. This in figure 4 The right screen cloth segment 20 has an iron reinforcement which forms a ferromagnetic coupling element 21 which forms a magnetic connection with the magnet 32 of the adapter. The reinforcements form reinforcements in the screen mat segments 10, 20 and run parallel to the C-profile of the frame 40, to which the adapter 30, which is also designed as a strip, is fastened. The screen lining segments 10, 20 are made of polyurethane, with the reinforcements being cast. Due to the course of the reinforcements parallel to the course of the frame 40, the screen cloth segments 10, 20 are flexible, which makes it easier to remove the screen cloth segments 10, 20 from the magnets 31, 32.

Claims (16)

  1. Fixing system for screening machines and/or setting machines for fastening exchangeable screen lining segments (10, 20) and/or exchangeable wear protection elements in or on a screening machine or setting machine having exchangeable screen lining segments and/or exchangeable wear protection elements and having at least one frame (40) receiving the screen lining segments (10, 20) and/or supporting the wear protection elements, characterised in that for fixing a screen lining segment (10, 20) and/or a wear protection element at least one adapter (30) is fixed to the frame (40), wherein the adapter (30) has at least one magnet (31, 32), wherein the magnet interacts with at least one ferromagnetic coupling element (11, 21) arranged in a vibration-proof manner in the screen lining segment (10, 20) and/or wear protection element and thus creates a magnetic connection between the adapter (30) and the screen lining segment (10, 20) and/or wear protection element and wherein the one or several ferromagnetic coupling elements (11, 21) is/are cast in each screen lining segment (10, 20) and/or each wear protection element.
  2. Fixing system according to claim 1, characterised in that the magnet interacts with the frame (40) and thereby creates a magnetic connection between the adapter (30) and the frame (40).
  3. Fixing system according to claim 1 or 2, characterised in that the adapter (30) is fixed to a component of the screening machine made of nonferromagnetic material, in particular that the adapter (30) is non-positively and/or integrally and/or positively fixed.
  4. Fixing system according to claim 1 or 2, characterised in that the adapter (30) is fixed to a component of the screening machine made of ferromagnetic material, in particular that the adapter (30) is magnetically and/or non-positively and/or integrally and/or positively fixed.
  5. Fixing system according to any of the preceding claims, characterised in that each adapter (30) has a plurality of in particular equidistantly arranged magnets (31, 32).
  6. Fixing system according to any of the preceding claims, characterised in that the ferromagnetic coupling element (11, 21) of a screen lining element (10, 20) is formed by a perforated plate made of ferromagnetic material which forms a support for screen media, particularly fabrics.
  7. Fixing system according to any of the preceding claims, characterised in that the ferromagnetic coupling element (11, 21) is continuously or sectionally formed parallel to the course of an elongated adapter (30).
  8. Fixing system according to any of the preceding claims, characterised in that the magnet(s) (31, 32) and/or the ferromagnetic coupling element(s) (11, 21) have at least one undercut.
  9. Fixing system according to any of the preceding claims, characterised in that the screen lining segments and the respective adapters (30) form a positive fit for fixing the screen lining segments (10, 20), in particular form a tongue-and-groove connection.
  10. Fixing system according to any of the preceding claims, characterised in that the adapters (30) are formed by adapter strips with a symmetrical arrangement of several magnets (31, 32) and/or that the screen lining segments (10, 20) have a rotationally symmetrical arrangement of several ferromagnetic coupling elements (11, 21) and a square basic shape.
  11. Fixing system according to any of the preceding claims, characterised in that the adapter (30) has double-sided magnets (31, 32) and/or is equipped on both sides with magnets (31, 32), such that a magnetic fixing of the adapter (30) to the frame and/or a magnetic fixing of a screen lining segments (10, 20) and/or a wear protection element to the adapter (30) can take place.
  12. Screening machine having a supporting frame for receiving a plurality of screen lining segments (10, 20) for forming a screen base, characterised in that the supporting frame (40) has a fixing system according to any of the preceding claims.
  13. Screening machine according to claim 12, characterised in that several screen lining segments (10, 20) form a screen base, in particular wherein adjacent screen lining segments (10, 20) form in each case a positive fit, in particular have a tongue-and-groove connection.
  14. Screening machine according to claim 12 or 13, characterised in that several screen lining segments (10, 20) form a screen phase wherein the screen lining segments (10, 20) which are the last in the transport direction of the material to be screened rest at the end in transport direction against transverse stop elements, in particular rest against a continuous transverse stop bar (45), in particular that the screen lining segments (10, 20) form a positive fit, in particular form a tongue-and-groove connection, with the transverse stop bar (45) extending perpendicularly to the transport direction.
  15. Screening machine according to any of claims 12 to 14, characterised in that several screen lining segments (10, 20) form a screen-base, wherein the screen lining segments (10, 20) rest laterally in the direction perpendicular to the transport direction of the material to be screened against longitudinal stop elements (41, 42), in particular longitudinal stop bars, extending parallel to the transport direction, in particular that the screen lining segments (10, 20) form a positive fit, in particular form a tongue-and-groove connection, with the longitudinal stop bars extending parallel to the transport direction.
  16. Screen lining segment or wear protection element for use in a screening machine according to any of claims 12 to 15, characterised in that one or several ferromagnetic coupling elements (11, 21) is/are cast in the screen lining segment (10, 20) or the wear protection element.
EP17000871.8A 2017-05-22 2017-05-22 Magnetic filter lining fixing system Active EP3406357B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17000871.8A EP3406357B1 (en) 2017-05-22 2017-05-22 Magnetic filter lining fixing system
US16/615,875 US20200078827A1 (en) 2017-05-22 2018-05-03 Magnetic screen lining fastening system
PCT/EP2018/000237 WO2018215086A1 (en) 2017-05-22 2018-05-03 Magnetic screen lining fastening system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17000871.8A EP3406357B1 (en) 2017-05-22 2017-05-22 Magnetic filter lining fixing system

Publications (2)

Publication Number Publication Date
EP3406357A1 EP3406357A1 (en) 2018-11-28
EP3406357B1 true EP3406357B1 (en) 2023-07-19

Family

ID=58772302

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17000871.8A Active EP3406357B1 (en) 2017-05-22 2017-05-22 Magnetic filter lining fixing system

Country Status (3)

Country Link
US (1) US20200078827A1 (en)
EP (1) EP3406357B1 (en)
WO (1) WO2018215086A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4176981A1 (en) 2021-11-09 2023-05-10 Steinhaus GmbH Magnetic screen bottom attachment system with automatic positioning

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6753672U (en) * 1968-09-25 1969-06-19 Steinhaus Gmbh SCREEN SHEET MADE OF PREFABRICATED ELASTIC PLATES IN COMPOSITE LAYING
SE428763B (en) * 1981-12-07 1983-07-25 Trelleborg Ab Arrangement for a screen
DE3628418A1 (en) * 1986-08-21 1988-02-25 Krupp Gmbh Screen with exchangeable screen lining
DE8811079U1 (en) * 1987-10-31 1988-10-20 Steinhaus Gmbh, 4330 Muelheim, De
US5816413A (en) * 1995-09-08 1998-10-06 W.S. Tyler, Canada Wire screen deck having replaceable modular screen panels
US9283700B2 (en) * 2009-12-23 2016-03-15 Tema Isenmann, Inc. Removable magnetic liner and screening media, and processes of production, installation, and use thereof

Also Published As

Publication number Publication date
EP3406357A1 (en) 2018-11-28
WO2018215086A1 (en) 2018-11-29
US20200078827A1 (en) 2020-03-12

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