EP0167999A2 - Screen bottom - Google Patents

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Publication number
EP0167999A2
EP0167999A2 EP85108325A EP85108325A EP0167999A2 EP 0167999 A2 EP0167999 A2 EP 0167999A2 EP 85108325 A EP85108325 A EP 85108325A EP 85108325 A EP85108325 A EP 85108325A EP 0167999 A2 EP0167999 A2 EP 0167999A2
Authority
EP
European Patent Office
Prior art keywords
profile
covering according
sieve
screen
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85108325A
Other languages
German (de)
French (fr)
Other versions
EP0167999A3 (en
EP0167999B2 (en
EP0167999B1 (en
Inventor
Wolfgang Lehmann
Siegfried Schroeter
Christian Neukam
Horst Krüger
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 TRENN- UND FOERDERTECHNIK GMBH
Original Assignee
Isenmann Siebe GmbH
Hein Lehmann AG
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Publication date
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Application filed by Isenmann Siebe GmbH, Hein Lehmann AG filed Critical Isenmann Siebe GmbH
Priority to AT85108325T priority Critical patent/ATE37149T1/en
Publication of EP0167999A2 publication Critical patent/EP0167999A2/en
Publication of EP0167999A3 publication Critical patent/EP0167999A3/en
Application granted granted Critical
Publication of EP0167999B1 publication Critical patent/EP0167999B1/en
Publication of EP0167999B2 publication Critical patent/EP0167999B2/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4645Screening surfaces built up of modular elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B2201/00Details applicable to machines for screening using sieves or gratings
    • B07B2201/02Fastening means for fastening screens to their frames which do not stretch or sag the screening surfaces

Definitions

  • the invention relates to a screen covering with screen elements arranged side by side, which are interchangeably fastened to a supporting substructure by additional plastic profiles or bolts, which hold two lateral edges of adjacent screen elements and which have projections on their underside which are fastened in a latching manner to the substructure.
  • Such a screen covering is known from German publication 27 36 662.
  • the plastic profiles holding the sieve elements are arranged with their upper side at the level of the upper side of the sieve elements, so that the profiles are exposed to the material to be sieved and thus the plastic of the profiles not only has to ensure that the sieve elements are held in place, but also for a small amount Wear must be selected.
  • these profiles require protruding reinforcement parts of the sieve elements in order to be able to attach the sieve elements to the substructure through the profiles.
  • the object of the invention is to improve a screen covering of the type mentioned in such a way that the intermediate element (profile, bolt) is not exposed to wear and the screen elements are simple to manufacture.
  • intermediate element There is always only a single intermediate element between two screen elements, so that the number of intermediate elements (profiles, bolts) can be small. In the area of the profiles or bolts, these form several projections and recesses with the end faces of the screen elements, so that a multiple labyrinth of high density is created.
  • the intermediate elements, in particular profiles, are particularly easy to manufacture so that they can be created by continuous casting or segmental injection molding.
  • fastening elements do not form any projections over the upper sieve surface, since in the area of the profiles or bolts the top of the sieve elements continuously passes through without recesses and / or elevations.
  • the screen elements can be fastened in a form-locking manner with a lower, recessed area of the end faces on the profiles or bolts.
  • the profile or the bolt have at least one projection on the side, in particular at least one tooth, which lies in a correspondingly shaped recess on the end face of the screen elements.
  • the projections and recesses can be shaped such that a greater force can be transmitted to the profile or the bolt in the pulling direction of the sieve element than in the downward pressure direction. This creates a particularly secure hold, with assembly and disassembly being even easier.
  • the projections and recesses can be sawtooth-shaped, the steeper flanks of the projections of the profile or of the bolt facing the top of the screen elements. It is also proposed that the projections and recesses run over the entire length of the profile and two side edges of the screen element.
  • a bar projects approximately horizontally from the top of the substructure on the profile or bolt on both sides, covering the top of the substructure.
  • the free end of the bar can be angled downward in an approximately L-shaped manner and, with this area, protectively overlap the upper part of the side wall of the profile of the substructure to which the plastic profile is held.
  • the top of the bar on the outer edge can also form an upwardly protruding lip which, when the bar is under tension, lies sealingly on the underside of the screen element.
  • the profiles or bolts have two recesses on the top, in particular two grooves running along the profile, and that a recess or groove has a correspondingly shaped projection on the underside of a screen element and into the other recess or groove, a correspondingly shaped projection engages on the underside of the adjacent screen element.
  • the outer vertical side wall of the groove can be aligned with the free, downwardly angled end of the strip.
  • the profile has two longitudinal parallel grooves on the underside, into which two free legs of the substructure engage.
  • the profile or the bolt is formed by a laterally protruding area of the adjacent screen element, in particular a screen element located at the edge of the screen covering.
  • the profile or the bolt can be formed from a laterally projecting molded-on area of a lateral edge part of the sieve plate, so that a secure and tight edge closure of the sieve plate is achieved.
  • a sieve tray 1 is composed of individual rectangular sieve elements 2, the length of which is at least twice the width.
  • the sieve elements extend between the two vertical side walls 3 of a sieving machine and consist of plastic.
  • the end faces 4 of two adjacent screen elements lie close together in the upper region. In the area underneath, the end faces 4 jump back to form recesses 5.
  • the recessed areas 5 of two adjacent screen elements 2 form a space below the abutting end faces 4 in which the upper area of a plastic profile 6 lies.
  • the profile 6 extends over the entire length of the longer sides of the sieve elements 2 and forms projections or teeth 7 in the upper region, which engage in a form-fitting manner in correspondingly shaped recesses 8 in the recessed regions 5.
  • the upper area of the profile 6 corresponds in size to the space formed by the area 5 between two adjacent screen elements 2. Below this, the profile 6 forms two ledges 10 projecting on both sides, which are arranged horizontally and with their top on the underside 11 of the screen elements 2 concerns.
  • the longitudinal strips 10 lie with their underside on a U-shaped steel profile 12, the upward-facing legs are bent inwards and thus form a gap-shaped opening 13 above, into which a strip-shaped projection 14 of the profile 6 extends into a detent. In order to enable a latching hold of the projection 14, it is in the inserted one Position at the height of the opening 13 approximately from the width of the opening and below that of a larger cross section.
  • the profile 6 has no influence on the shape of the top 16 of the screen elements 2, so that the top 16 can be flat.
  • the openings in the sieve elements 2 for the material to be sieved are not shown.
  • the horizontal strips 10 can be bent downwards at right angles at their free ends and thus partially encompass the outer sides of the U-profiles 12.
  • the strips 10 are thus L-shaped in cross section.
  • the free ends of the strips 10 have upwardly directed lips 17 which extend along the profile 6 and press against the underside of the sieve elements 2.
  • the embodiment shown in FIG. 3 differs in that the upper area of the profile 6 does not have a plurality of longitudinally extending horizontal teeth as in FIG. 1, but only a single tooth-shaped projection 7a on each side, each in a corresponding recess 8a the face of the screen element.
  • the profiles have two longitudinal grooves 18 on the upper side, into which strip-shaped projections 19 protrude, which are formed on the undersides 11 of the sieve elements 2.
  • lip-shaped profiles can also protrude further on the undersides 11, which encompass the profile 6 on the outside.
  • the area of the profile 6 which remains between the two grooves 18 and which projects upwards lies, like the upper area of the profile 6 in the exemplary embodiment according to FIG. 1, in recessed areas 5 of the end faces of the screen elements.
  • the profile 6 according to FIG. 4 thus has on the underside 2 longitudinal parallel grooves 20 into which the two free legs of the U-profile 12 protrude.
  • the profile 6 can also be formed on the longitudinal side of a screen element, so that sawtooth-shaped projections are only required on one side of the profile.
  • This embodiment is also particularly suitable for fastening sieve elements in the edge region of a sieve bottom. This is shown on the left in FIG. 1.
  • the free edge of the screen element 2a is clamped between a lower L-shaped profile 21 made of steel and an upper plastic strip 22.
  • a conventional sieve element 2 can also be attached to the edge of the sieve bottom, as is shown on the right-hand side of FIG. 1.
  • a half profile 6 is pushed into a half profile 12 in a latching manner.
  • FIG. 6 A further alternative method of fastening the sieve elements in the edge region is shown in FIG. 6.
  • a side plastic profile 23 of greater height than width has in the lower region a half-molded profile 6 on which a conventional sieve element 2 is held in the same manner as in FIG. 1 is shown on the right. This reduces the number of parts to be assembled and reliably protects the side wall of the screening machine.
  • the intermediate element can be formed by a bolt or a bolt-shaped part instead of a profile 6.

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  • Combined Means For Separation Of Solids (AREA)
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  • Stringed Musical Instruments (AREA)
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  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
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  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

1. Screen bottom with screen elements (2) positioned side-by-side which are secured replaceably to a supporting sub-frame (2) by additional profiled members (6) made of synthetic material, in which the profiled members (6) grip two side edges of adjacent screen elements and have on their under surface projections (14) which are positively secured to the sub-frame, the screen elements (2) completely convering the upper surfaces of the profiled members (6), characterized in that the screen elements (2) with lower, offset regions (5) in their faces are secured to the profiled members (6) so that they engage positively.

Description

Die Erfindung betrifft einen Siebbelag mit nebeneinander angeordneten Siebelementen, die an einer tragenden Unterkonstruktion durch zusätzliche Kunststoffprofile oder -bolzen auswechselbar befestigt sind, die zwei seitliche Ränder benachbarter Siebelemente halten und die an ihrer Unterseite Vorsprünge aufweisen, die an der Unterkonstruktion rastend befestigt sind.The invention relates to a screen covering with screen elements arranged side by side, which are interchangeably fastened to a supporting substructure by additional plastic profiles or bolts, which hold two lateral edges of adjacent screen elements and which have projections on their underside which are fastened in a latching manner to the substructure.

Ein solcher Siebbelag ist aus der deutschen Auslegeschrift 27 36 662 bekannt. Bei diesem bekannten Siebbelag sind die die Siebelemente haltenden Kunststoffprofile mit ihrer Oberseite in Höhe der Oberseite der Siebelemente angeordnet, so daß die Profile dem Siebgut ausgesetzt sind und damit der Kunststoff der Profile nicht nur für den Halt der Siebelemente sorgen muß, sondern auch für einen geringen Verschleiß gewählt sein muß. Darüber hinaus erfordern diese Profile vorspringende Bewehrungsteile der Siebelemente um die Siebelemente durch die Profile an der Unterkonstruktion befestigen zu können.Such a screen covering is known from German publication 27 36 662. In this known sieve covering, the plastic profiles holding the sieve elements are arranged with their upper side at the level of the upper side of the sieve elements, so that the profiles are exposed to the material to be sieved and thus the plastic of the profiles not only has to ensure that the sieve elements are held in place, but also for a small amount Wear must be selected. In addition, these profiles require protruding reinforcement parts of the sieve elements in order to be able to attach the sieve elements to the substructure through the profiles.

Ferner ist es aus der deutschen Offenlegungsschrift 24 37 809 bekannt, an der Unterseite von Siebelementen Vorsprünge anzuformen, die in Öffnungen der Unterkonstruktion einrasten. Das Anformen solcher Vorsprünge ist aufwendig, da sie über die Unterseite der Siebelemente hinausragend müssen und damit die Bauhöhe der Siebelemente vergrößern.Furthermore, it is known from German Offenlegungsschrift 24 37 809 to form projections on the underside of sieve elements, which snap into openings in the substructure. The molding of such protrusions is complex, since they have to protrude beyond the underside of the screen elements and thus increase the overall height of the screen elements.

Aufgabe der Erfindung ist es, einen Siebbelag der eingangs genannten Art derart zu verbessern, daß das Zwischenelement (Profil, Bolzen) einem Verschleiß nicht ausgesetzt ist und die Siebelemente in der Herstellung einfach sind.The object of the invention is to improve a screen covering of the type mentioned in such a way that the intermediate element (profile, bolt) is not exposed to wear and the screen elements are simple to manufacture.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Siebelemente die Profile oder Bolzen an der Oberseite vollständig überdecken.This object is achieved in that the screen elements completely cover the profiles or bolts on the top.

Damit sind allein die Hebelemente dem Siebgut ausgesetzt - und die Siebelemente liegen schützend über den Profilen oder Bolzen, die der Befestigung der Siebelemente an der Unterkonstruktion dienen. Das Material der Profile oder Bolzen kann damit allein auf die Haltefunktion ausgerichtet sein, so daß ein Kompromiß zwischen einem Material für eine optimale Haltefunktion und einem optimal geringen Verschleiß nicht gesucht werden muß.This means that only the lifting elements are exposed to the material to be screened - and the screen elements protectively lie over the profiles or bolts that serve to fasten the screen elements to the substructure. The material of the profiles or bolts can thus be aligned solely with the holding function, so that a compromise between a material for an optimal holding function and optimally low wear need not be sought.

Zwischen zwei Siebelementen liegt stets nur ein einziges Zwischenelement ein, so daß die Anzahl der Zwischenelemente (Profile, Bolzen) gering sein kann. Im Bereich der Profile oder Bolzen bilden diese mit den Stirnseiten der Siebelemente mehrere Vor- und Rücksprünge, so daß ein Vielfach-Labyrinth von hoher Dichtheit entsteht. Die Zwischenelemente, insbesondere Profile, sind besonders einfach herstellbar, daß sie durch Strangguß oder segmentweisen Spritzguß geschaffen werden können.There is always only a single intermediate element between two screen elements, so that the number of intermediate elements (profiles, bolts) can be small. In the area of the profiles or bolts, these form several projections and recesses with the end faces of the screen elements, so that a multiple labyrinth of high density is created. The intermediate elements, in particular profiles, are particularly easy to manufacture so that they can be created by continuous casting or segmental injection molding.

Zwischenelemente und Siebelemente sind besonders leicht zu montieren, insbesondere da auf einen paßgenauen Sitz in einzelne Öffnungen der Unterkonstruktion nicht geachtet werden muß. Auch die Demontage ist besonders einfach zu bewerkstelligen. Durch die großen Anlageflächen von den Profilen an der Unterkonstruktion als auch an den Siebelementen wird ein Längsverschub der Siebelemente als auch der Profile sicher verhindert.Intermediate elements and sieve elements are particularly easy to assemble, especially since a precise fit in individual openings in the substructure is not taken into account must become. Disassembly is also particularly easy to do. The large contact surfaces of the profiles on the substructure and on the sieve elements reliably prevent longitudinal displacement of the sieve elements and the profiles.

Besonders vorteilhaft ist es, daß die Befestigungselemente keine Vorsprünge über der oberen Siebfläche bilden, da im Bereich der Profile oder Bolzen die Oberseite der Siebelemente ohne Ausnehmungen und/oder Erhebungen stetig durchläuft.It is particularly advantageous that the fastening elements do not form any projections over the upper sieve surface, since in the area of the profiles or bolts the top of the sieve elements continuously passes through without recesses and / or elevations.

Ferner können die Siebelemente mit einem unteren, rückspringenden Bereich der Stirnseiten an den Profilen oder Bolzen formschlüssig rastend befestigt sein.Furthermore, the screen elements can be fastened in a form-locking manner with a lower, recessed area of the end faces on the profiles or bolts.

Dies führt nicht nur zu einem besonders sicheren Halt und einfacher Montage und Demontage, sondern auch zu einer geringen Bauhöhe des Siebbodens. Hierzu wird auch vorgeschlagen, daß das Profil oder der Bolzen seitlich mindestens einen Vorsprung insbesondere mindestens einen Zahn aufweist, der in einer entsprechend geformten Ausnehmung der Stirnseite der Siebelemente einliegt.This not only leads to a particularly secure hold and simple assembly and disassembly, but also to a low overall height of the sieve plate. For this purpose, it is also proposed that the profile or the bolt have at least one projection on the side, in particular at least one tooth, which lies in a correspondingly shaped recess on the end face of the screen elements.

Ferner können die Vorsprünge und Ausnehmungen derart geformt sein, daß in Zugrichtung des Siebelementes nach oben eine größere Kraft auf das Profil oder den Bolzen übertragbar ist als in Druckrichtung nach unten. Hierdurch wird ein besonders sicherer Halt geschaffen, wobei sich Montage und Demontage als noch einfacher darstellen. Dabei können die Vorsprünge und Ausnehmungen sägezahnförmig sein, wobei die zur Waagerechten steileren Flanken der Vorsprünge des Profils oder des Bolzens der Siebelementenoberseite zugewandt sind. Auch wird vorgeschlagen, daß die Vorsprünge und Ausnehmungen über die gesamte Länge des Profils und zweier Seitenränder des Siebelementes laufen.Furthermore, the projections and recesses can be shaped such that a greater force can be transmitted to the profile or the bolt in the pulling direction of the sieve element than in the downward pressure direction. This creates a particularly secure hold, with assembly and disassembly being even easier. The projections and recesses can be sawtooth-shaped, the steeper flanks of the projections of the profile or of the bolt facing the top of the screen elements. It is also proposed that the projections and recesses run over the entire length of the profile and two side edges of the screen element.

Besonders vorteilhaft ist es, wenn oberhalb des Profils oder Bolzens die stirnseitigen Ränder zweier benachbarter Siebelemente dicht aneinanderliegen.It is particularly advantageous if the front edges of two adjacent sieve elements lie close together above the profile or bolt.

Um die Unterkonstruktion vor einem Verschleiß durch das Siebgut zu schützen, als auch um ein Eindringen von Siebgut zwischen dem Profil oder Bolzen und dem Siebelement als auch zwischen Profil und Bolzen und Unterkonstruktion zu verhindern wird vorgeschlagen, daß in einem Zwischenraum zwischen der Unterseite der Siebelemente und der Oberseite der Unterkonstruktion am Profil oder Bolzen zu beiden Seiten eine Leiste (Lippe) etwa waagerecht vorspringt, die die Oberseite der Unterkonstruktion überdeckt. Ferner kann hierzu das freie Ende der Leiste etwa L-förmig nach unten abgewinkelt sein und mit diesem Bereich den oberen Teil der Seitenwand des Profils der Unterkonstruktion schützend übergreifen, an dem das Kunststoffprofil Halt findet. Auch kann die Oberseite der Leiste am äußeren Rand eine nach oben vorstehende Lippe bilden, die unter Spannung der Leiste an der Unterseite des Siebelementes dichtend anliegt.In order to protect the substructure from wear by the screenings, as well as to prevent the ingress of screenings between the profile or bolt and the screen element and between the profile and pin and substructure, it is proposed that in an intermediate space between the underside of the screen elements and A bar (lip) projects approximately horizontally from the top of the substructure on the profile or bolt on both sides, covering the top of the substructure. Furthermore, the free end of the bar can be angled downward in an approximately L-shaped manner and, with this area, protectively overlap the upper part of the side wall of the profile of the substructure to which the plastic profile is held. The top of the bar on the outer edge can also form an upwardly protruding lip which, when the bar is under tension, lies sealingly on the underside of the screen element.

Eine alternative Befestigungsweise zwischen Siebelementen und Zwischenelementen wird dann erreicht, wenn die Profile oder Bolzen an der Oberseite zwei Ausnehmungen insbesondere zwei längs des Profils laufende Nuten aufweisen und daß in die eine Ausnehmung bzw. Nut ein entsprechend geformter Vorsprung an der Unterseite eines Siebelementes und in die andere Ausnehmung bzw. Nut ein entsprechend geformter Vorsprung an der Unterseite des benachbarten Siebelementes einrastet. Hierbei kann die äußere senkrechte Seitenwand der Nut mit dem freien, nach unten abgewinkelten Ende der Leiste fluchten. Auch wird vorgeschlagen, daß das Profil an der Unterseite zwei längsgerichtete parallele Nuten aufweist, in die zwei freie Schenkel der Unterkonstruktion einrasten. Eine weitere Vereinfachung der Konstruktion und eine Verringerung der Einzelteile wird dadurch erreicht, daß das Profil oder der Bolzen von einem seitlich vorstehenden angeformten Bereich des benachbarten Siebelementes insbesondere eines am Rand des Siebbelages befindlichen Siebelementes gebildet ist. Hierbei kann das Profil oder der Bolzen von einem seitlich vorstehenden angeformten Bereich eines seitlichen Randteiles des Siebbodens gebildet sein, so daß ein sicherer und dichter Randabschluß des Siebbodens erreicht wird.An alternative method of fastening between screen elements and intermediate elements is achieved if the profiles or bolts have two recesses on the top, in particular two grooves running along the profile, and that a recess or groove has a correspondingly shaped projection on the underside of a screen element and into the other recess or groove, a correspondingly shaped projection engages on the underside of the adjacent screen element. Here, the outer vertical side wall of the groove can be aligned with the free, downwardly angled end of the strip. It is also proposed that the profile has two longitudinal parallel grooves on the underside, into which two free legs of the substructure engage. A further simplification of the construction and a reduction of the individual parts is achieved in that the profile or the bolt is formed by a laterally protruding area of the adjacent screen element, in particular a screen element located at the edge of the screen covering. Here, the profile or the bolt can be formed from a laterally projecting molded-on area of a lateral edge part of the sieve plate, so that a secure and tight edge closure of the sieve plate is achieved.

Ausführungsbeispiele der Erfindung sind in den Zeichnungen in senkrechten Schnitten dargestellt und werden im folgenden näher beschrieben. Es zeigen

  • Fig. 1 einen Schnitt durch einen Siebboden mit sägezahnförmiger Befestigungsweise,
  • Fig. 2 einen Ausschnitt aus Fig. 1 mit angeformten Lippen an seitlich vorstehenden Leisten der Zwischenelemente,
  • Fig. 3 statt einer Befestigung mit mehreren Zähnen ein Zwischenelement bzw. eine Leiste oder ein Bolzen mit nur einem vorspringenden Zahn,
  • Fig. 4 ein Zwischenelement bzw.Leiste oder Bolzen mit jeweils zwei oberen und unteren Nuten,
  • Fig. 5 eine Leiste oder Bolzen, die an ein Zwischenelement angeformt ist, und
  • Fig. 6 eine Leiste oder Bolzen, die an ein senkrechtes Seitenelement angeformt ist.
Embodiments of the invention are shown in the drawings in vertical sections and are described in more detail below. Show it
  • 1 shows a section through a sieve plate with a sawtooth-shaped fastening method,
  • 2 shows a detail from FIG. 1 with molded lips on laterally projecting strips of the intermediate elements,
  • 3 instead of an attachment with several teeth, an intermediate element or a bar or a bolt with only one projecting tooth,
  • 4 an intermediate element or strip or bolt, each with two upper and lower grooves,
  • Fig. 5 is a bar or bolt which is integrally formed on an intermediate element, and
  • Fig. 6 is a bar or bolt which is molded onto a vertical side element.

Ein Siebboden 1 ist aus einzelnen rechteckförmigen Siebelementen 2 zusammengesetzt, deren Länge mindestens doppelt so groß ist wie deren Breite. Die Siebelemente erstrecken sich zwischen den beiden senkrechten Seitenwänden 3 einer Siebmaschine und bestehen aus Kunststoff.A sieve tray 1 is composed of individual rectangular sieve elements 2, the length of which is at least twice the width. The sieve elements extend between the two vertical side walls 3 of a sieving machine and consist of plastic.

An den Längsseiten der Siebelemente 2 liegen im oberen Bereich die Stirnseiten 4 zweier benachbarter Siebelemente dicht aneinander. Im darunter befindlichen Bereich springen die Stirnseiten 4 zurück um Ausnehmungen 5 zu bilden. Die rückspringenden Bereiche 5 zweier benachbarter Siebelemente 2 bilden unterhalb der aneinanderliegenden Stirnseiten 4 einen Raum, in dem der obere Bereich eines Kunststoffprofils 6 einliegt. Das Profil 6 erstreckt sich über die gesamte Länge der längeren Seiten der Siebelemente 2 und bildet im oberen Bereich Vorsprünge bzw. Zähne 7, die formschlüssig in entsprechend geformte Ausnehmungen 8 der rückspringenden Bereiche 5 einliegen.On the long sides of the screen elements 2, the end faces 4 of two adjacent screen elements lie close together in the upper region. In the area underneath, the end faces 4 jump back to form recesses 5. The recessed areas 5 of two adjacent screen elements 2 form a space below the abutting end faces 4 in which the upper area of a plastic profile 6 lies. The profile 6 extends over the entire length of the longer sides of the sieve elements 2 and forms projections or teeth 7 in the upper region, which engage in a form-fitting manner in correspondingly shaped recesses 8 in the recessed regions 5.

Um die Siebelemente 2 leicht befestigen zu können, aber sicherzustellen, daß sie sich nach oben hin nicht leicht lösen können, sind die zur Waagerechten steileren Flanken 9 der Zähne 7 nach oben hin gewandt. Der obere Bereich des Profils 6 entspricht in Abmessungen dem von dem Bereich 5 gebildeten Zwischenraum zwischen zwei benachbarten Siebelementen 2. Darunter bildet das Profil 6 zwei zu beiden Seiten-vorspringende Leisten 10, die waagerecht angeordnet sind und mit ihrer Oberseite an der Unterseite 11 der Siebelemente 2 anliegen. Die längs verlaufenden Leisten 10 liegen mit ihrer Unterseite auf einem U-förmigen Stahlprofil 12, dessen nach oben gewandte Schenkel nach innen abgebogen sind und die damit eine spaltförmige Öffnung 13 oben bilden, in die ein leistenförmiger Vorsprung 14 des Profils 6 rastend hineinreicht. Um einen rastenden Halt des Vorsprungs 14 zu ermöglichen, ist dieser in der eingesetzten Stellung in Höhe der Öffnung 13 etwa von der Breite der Öffnung und darunter von größerem Querschnitt.In order to be able to fasten the sieve elements 2 easily, but to ensure that they cannot be loosened easily upwards, the flanks 9 of the teeth 7, which are steeper horizontally, face upwards. The upper area of the profile 6 corresponds in size to the space formed by the area 5 between two adjacent screen elements 2. Below this, the profile 6 forms two ledges 10 projecting on both sides, which are arranged horizontally and with their top on the underside 11 of the screen elements 2 concerns. The longitudinal strips 10 lie with their underside on a U-shaped steel profile 12, the upward-facing legs are bent inwards and thus form a gap-shaped opening 13 above, into which a strip-shaped projection 14 of the profile 6 extends into a detent. In order to enable a latching hold of the projection 14, it is in the inserted one Position at the height of the opening 13 approximately from the width of the opening and below that of a larger cross section.

Das Profil 6 hat auf die Form der Oberseite 16 der Siebelemente 2 keinen Einfluß, so daß die Oberseite 16 eben sein kann. Die in den Siebelementen 2 befindlichen Öffnungen für das Siebgut sind nicht dargestellt.The profile 6 has no influence on the shape of the top 16 of the screen elements 2, so that the top 16 can be flat. The openings in the sieve elements 2 for the material to be sieved are not shown.

Die waagerechten Leisten 10 können an deren freien Enden nach unten hin rechtwinklig abgebogen sein und damit die Außenseiten der U-Profile 12 teilweise umgreifen. Die Leisten 10 sind damit im Querschnitt L-.förmig. In einer in Fig. 2 dargestellten alternativen Ausführung weisen die freien Enden der Leisten 10 nach oben gerichtete Lippen 17 auf, die sich längs des Profils 6 erstrecken und gegen die Unterseite der Siebelemente 2 drücken.The horizontal strips 10 can be bent downwards at right angles at their free ends and thus partially encompass the outer sides of the U-profiles 12. The strips 10 are thus L-shaped in cross section. In an alternative embodiment shown in FIG. 2, the free ends of the strips 10 have upwardly directed lips 17 which extend along the profile 6 and press against the underside of the sieve elements 2.

Das in Fig. 3 dargestellte Ausführungsbeispiel unterscheidet sich dadurch, daß der obere Bereich des Profils 6 nicht wie in Fig. 1 mehrere längs verlaufende waagerechte Zähne sondern nur einen einzigen zahnförmigen Vorsprung 7a jeweils zu beiden Seiten aufweist, der jeweils in einer entsprechenden Ausnehmung 8a an der Stirnseite des Siebelementes einliegt. Im Ausführungsbeispiel nach Fig. 4 weisen die Profile an der Oberseite zwei längs verlaufende Nuten 18 auf, in die leistenförmige Vorsprünge 19 hineinragen, die an den Unterseiten 11 der Siebelemente 2 angeformt sind. Ferner können an den Unterseiten 11 weiter außen jeweils noch lippenförmige Profile vorstehen, die das Profil 6 außen umgreifen. Der zwischen den beiden Nuten 18 verbliebene und nach oben hin vorstehende Bereich des Profils 6 liegt, wie schon der obere Bereich des Profils 6 im Ausführungsbeispiel nach Fig. 1, in rückspringenden Bereichen 5 der Stirnseiten der Siebelemente ein. Das Profil 6 nach Fig. 4 weist somit an Unterseite 2 längs gerichtete parallele Nuten 20 auf, in die die zwei freien Schenkel des U-Profils 12 hineinragen.The embodiment shown in FIG. 3 differs in that the upper area of the profile 6 does not have a plurality of longitudinally extending horizontal teeth as in FIG. 1, but only a single tooth-shaped projection 7a on each side, each in a corresponding recess 8a the face of the screen element. In the exemplary embodiment according to FIG. 4, the profiles have two longitudinal grooves 18 on the upper side, into which strip-shaped projections 19 protrude, which are formed on the undersides 11 of the sieve elements 2. Furthermore, lip-shaped profiles can also protrude further on the undersides 11, which encompass the profile 6 on the outside. The area of the profile 6 which remains between the two grooves 18 and which projects upwards lies, like the upper area of the profile 6 in the exemplary embodiment according to FIG. 1, in recessed areas 5 of the end faces of the screen elements. The profile 6 according to FIG. 4 thus has on the underside 2 longitudinal parallel grooves 20 into which the two free legs of the U-profile 12 protrude.

Entsprechend der in Fig. 5 dargestellten Ausführung kann das Profil 6 auch an der Längsseite eines Siebelementes angeformt sein, so daß nur an einer Seite des Profils sägezahnförmige Vorsprünge erforderlich sind. Diese Ausführungsform eignet sich auch besonderes zur Befestigung von Siebelementen im Randbereich eines Siebbodens. Dies ist in Fig. 1 auf der linken Seite dargestellt. Der freie Rand des Siebelementes 2a ist hierbei zwischen einem unteren L-förmigen Profil 21 aus Stahl und einer oberen Kunststoffleiste 22 eingespannt. Statt dessen kann aber auch ein übliches Siebelement 2 am Rand des Siebbodens befestigt werden, wie dies auf der rechten Seite der Fig. 1 dargestellt ist. Hierzu wird ein halbes Profil 6 in einem halben Profil 12 rastend eingeschoben.According to the embodiment shown in FIG. 5, the profile 6 can also be formed on the longitudinal side of a screen element, so that sawtooth-shaped projections are only required on one side of the profile. This embodiment is also particularly suitable for fastening sieve elements in the edge region of a sieve bottom. This is shown on the left in FIG. 1. The free edge of the screen element 2a is clamped between a lower L-shaped profile 21 made of steel and an upper plastic strip 22. Instead, however, a conventional sieve element 2 can also be attached to the edge of the sieve bottom, as is shown on the right-hand side of FIG. 1. For this purpose, a half profile 6 is pushed into a half profile 12 in a latching manner.

Eine weitere alternative Befestigungsweise der Siebelemente im Randbereich zeigt Fig. 6. Ein seitliches Kunststoffprofil 23 größerer Höhe als Breite besitzt im unteren Bereich ein halbes angeformtes Profil 6, an dem ein übliches Siebelement 2 in derselben Weise eingerastet gehalten ist, wie dies in Fig. 1 auf der rechten Seite dargestellt ist. Hierdurch wird die Zahl der zu montierenden Teile verringert und die Seitenwand der Siebmaschine sicher geschützt.A further alternative method of fastening the sieve elements in the edge region is shown in FIG. 6. A side plastic profile 23 of greater height than width has in the lower region a half-molded profile 6 on which a conventional sieve element 2 is held in the same manner as in FIG. 1 is shown on the right. This reduces the number of parts to be assembled and reliably protects the side wall of the screening machine.

Bei allen Ausführungsbeispielen kann das Zwischenelement statt von einem Profil 6 von einem Bolzen bzw. einem bolzenförmigen Teil gebildet sein.In all exemplary embodiments, the intermediate element can be formed by a bolt or a bolt-shaped part instead of a profile 6.

Claims (16)

1. Siebbelag mit nebeneinander angeordneten Siebelementen, die an einer tragenden Unterkonstruktion durch zusätzliche Kunststoffprofile oder -bolzen auswechselbar befestigt sind, die zwei seitliche Ränder benachbarter Siebelemente halten und die an ihrer Unterseite Vorsprünge aufweisen, die an der Unterkonstruktion rastend befestigt sind,
dadurch gekennzeichnet,
daß die Siebelemente (2) die Profile (6) oder Bolzen an der Oberseite vollständig überdecken.
1.Screening with sieve elements arranged next to one another, which are interchangeably fastened to a load-bearing substructure by additional plastic profiles or bolts, which hold two lateral edges of adjacent sieve elements and which have projections on their underside which are latched to the substructure,
characterized,
that the sieve elements (2) completely cover the profiles (6) or bolts on the top.
2. Siebbelag nach Anspruch 1,
dadurch gekennzeichnet,
daß im Bereich der Profile (6) oder Bolzen die Oberseite (16) der Siebelemente (2) ohne Ausnehmungen und/oder Erhebungen stetig durchläuft.
2. screen covering according to claim 1,
characterized,
that in the area of the profiles (6) or bolts, the top (16) of the sieve elements (2) runs continuously without recesses and / or elevations.
3. Siebbelag nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß die Siebelemente (2) mit einem unteren, rückspringenden Bereich (5) der Stirnseiten an den Profilen (6) oder Bolzen formschlüssig rastend befestigt sind.
3. screen covering according to claim 1 or 2,
characterized,
that the screen elements (2) with a lower, recessed area (5) of the end faces on the profiles (6) or bolts are positively locked.
4. Siebbelag nach Anspruch 3,
dadurch gekennzeichnet,
daß das Profil (6) oder der Bolzen seitlich mindestens einen Vorsprung (7) insbesondere mindestens einen Zahn aufweist, der in einer entsprechend geformten Ausnehmung (8) der Stirnseite der Siebelemente (2) einliegt.
4. screen covering according to claim 3,
characterized,
that the profile (6) or the bolt laterally has at least one projection (7), in particular at least one tooth, which lies in a correspondingly shaped recess (8) on the end face of the sieve elements (2).
5. Siebbelag nach Anspruch 4,
dadurch gekennzeichnet,
daß die Vorsprünge (7) und Ausnehmungen (8) so geformt sind, daß in Zugrichtung des Siebelementes (2) nach oben eine größere Kraft auf das Profil (6) oder den Bolzen übertragbar ist als in Druckrichtung nach unten.
5. screen covering according to claim 4,
characterized,
that the projections (7) and recesses (8) are shaped such that a greater force can be transmitted to the profile (6) or the bolt in the pulling direction of the sieve element (2) than in the downward pressure direction.
6. Siebbelag nach Anspruch 5,
dadurch gekennzeichnet,
daß die Vorsprünge (7) und Ausnehmungen (8) sägezahnförmig sind, wobei die zur Waagerechten steileren Flanken (9) der Vorsprünge (7) des Profils (6) oder des Bolzens der Siebelementenoberseite (16) zugewandt sind.
6. screen covering according to claim 5,
characterized,
that the projections (7) and recesses (8) are sawtooth-shaped, the steeper flanks (9) of the projections (7) of the profile (6) or the bolt facing the top of the sieve elements (16).
7. Siebbelag nach einem der Ansprüche 4 bis 6,
dadurch gekennzeichnet,
daß die Vorsprünge (7) und Ausnehmungen (8) über die gesamte Länge des Profils (6) und zweier Seitenränder des Siebelementes (2) laufen.
7. Screen covering according to one of claims 4 to 6,
characterized,
that the projections (7) and recesses (8) run over the entire length of the profile (6) and two side edges of the screen element (2).
8. Siebbelag nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
daß oberhalb des Profils (6) oder Bolzens die stirnseitigen Ränder zweier benachbarter Siebelemente (2) dicht aneinanderliegen.
8. screen covering according to one of claims 1 to 7,
characterized,
that above the profile (6) or bolt, the front edges of two adjacent screen elements (2) lie close together.
9. Siebbelag nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
daß in einem Zwischenraum zwischen der Unterseite (11) der Siebelemente (2) und der Oberseite der Unterkonstruktion (12) am Profil (6) oder Bolzen zu beiden Seiten einer Leiste (Lippe) (10) etwa waagerecht vorspringt, die die Oberseite der Unterkonstruktion (12) überdeckt.
9. screen covering according to one of claims 1 to 8,
characterized,
da ß in an intermediate space between the underside (11) of the screen elements (2) and the top of the substructure (12) on the profile (6) or bolts on both sides of a bar (lip) (10) projects approximately horizontally, which the top of the Substructure (12) covered.
10. Siebbelag nach Anspruch 9,
dadurch gekennzeichnet,
daß das freie Ende der Leiste (10) etwa L-förmig nach unten abgewinkelt ist und mit diesem Bereich den oberen Teil der Seitenwand des Profils (12) der Unterkonstruktion schützend übergreift, an dem das Kunststoffprofil (6) Halt findet.
10. screen covering according to claim 9,
characterized,
that the free end of the strip (10) is angled downward in an L-shaped manner and with this area the upper part of the side wall of the profile (12) of the substructure is protected, on which the plastic profile (6) is held.
11. Siebbelag nach Anspruch 9 oder 10,
dadurch gekennzeichnet,
daß die Oberseite der Leiste (10) am äußeren Rand eine nach oben vorstehende Lippe (17) bildet, die unter Spannung der Leiste (10) an der Unterseite (11) des Siebelementes (2) dichtend anliegt.
11. Screen covering according to claim 9 or 10,
characterized,
that the top of the bar (10) forms an upwardly projecting lip (17) on the outer edge, which rests under tension of the bar (10) on the underside (11) of the sieve element (2).
12. Siebbelag nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet,
daß die Profile (6) oder Bolzen an der Oberseite zwei Ausnehmungen (18) insbesondere zwei längs des Profils laufende Nuten aufweisen und daß in die eine Ausnehmung (18) bzw. Nut ein entsprechend geformter Vorsprung (19) an der Unterseite eines Siebelementes (2) und in die andere Ausnehmung (18) bzw. Nut ein entsprechend geformter Vorsprung (19) an der Unterseite des benachbarten Siebelementes (2) einrastet.
12. Screen covering according to one of claims 1 to 11,
characterized,
that the profiles (6) or bolts on the top have two recesses (18), in particular two grooves running along the profile, and in that a recess (18) or groove has a correspondingly shaped projection (19) on the underside of a sieve element (2 ) and a correspondingly shaped projection (19) on the underside of the adjacent sieve element (2) snaps into the other recess (18) or groove.
13. Siebbelag nach Anspruch 12,
dadurch gekennzeichnet,
daß die äußere senkrechte Seitenwand (24) der Nut (18) mit dem freien, nach unten abgewinkelten Ende der Leiste (10) fluchtet.
13. screen covering according to claim 12,
characterized,
that the outer vertical side wall (24) of the groove (18) is aligned with the free, downwardly angled end of the bar (10).
14. Siebbelag nach einem der Ansprüche 10 bis 13,
dadurch gekennzeichnet,
daß das Profil (6) an der Unterseite zwei längsgerichtete parallele Nuten (20) aufweist, in die zwei freie Schenkel der Unterkonstruktion (12) einrasten.
14. Screen covering according to one of claims 10 to 13,
characterized,
that the profile (6) has two longitudinal parallel grooves (20) on the underside, into which two free legs of the substructure (12) engage.
15. Siebbelag nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet,
daß das Profil (6) oder der Bolzen von einem seitlich vorstehenden angeformten Bereich des benachbarten Siebelementes (2a) insbesondere eines am Rand des Siebbelages befindlichen Siebelementes (2a) gebildet ist.
15. Screen covering according to one of claims 1 to 14,
characterized,
that the profile (6) or the bolt is formed by a laterally projecting molded-on area of the adjacent sieve element (2a), in particular a sieve element (2a) located at the edge of the sieve covering.
16. Siebbelag nach einem der Ansprüche 1 bis 14,
dadurch gekennzeichnet,
daß das Profil (6) oder der Bolzen von einem seitlich vorstehenden angeformten Bereich eines seitlichen Randteiles (23) des Siebbodens (1) gebildet ist.
16. Screen covering according to one of claims 1 to 14,
characterized,
that the profile (6) or the bolt is formed by a laterally projecting molded-on area of a lateral edge part (23) of the sieve plate (1).
EP85108325A 1984-07-11 1985-07-05 Screen bottom Expired - Lifetime EP0167999B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85108325T ATE37149T1 (en) 1984-07-11 1985-07-05 SCREEN COVERING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3425485 1984-07-11
DE19843425485 DE3425485A1 (en) 1984-07-11 1984-07-11 SCREENING

Publications (4)

Publication Number Publication Date
EP0167999A2 true EP0167999A2 (en) 1986-01-15
EP0167999A3 EP0167999A3 (en) 1986-06-25
EP0167999B1 EP0167999B1 (en) 1988-09-14
EP0167999B2 EP0167999B2 (en) 1991-12-18

Family

ID=6240336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108325A Expired - Lifetime EP0167999B2 (en) 1984-07-11 1985-07-05 Screen bottom

Country Status (9)

Country Link
EP (1) EP0167999B2 (en)
JP (1) JPH0317976Y2 (en)
AT (1) ATE37149T1 (en)
AU (1) AU586172B2 (en)
DE (2) DE3425485A1 (en)
DK (1) DK314585A (en)
ES (1) ES287996Y (en)
NO (1) NO163517C (en)
ZA (1) ZA855136B (en)

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Also Published As

Publication number Publication date
AU4481085A (en) 1986-01-16
NO852768L (en) 1986-01-13
NO163517C (en) 1990-06-13
ES287996U (en) 1986-01-01
EP0167999A3 (en) 1986-06-25
AU586172B2 (en) 1989-07-06
ZA855136B (en) 1986-07-30
EP0167999B2 (en) 1991-12-18
DK314585D0 (en) 1985-07-10
DE3425485C2 (en) 1991-01-10
EP0167999B1 (en) 1988-09-14
NO163517B (en) 1990-03-05
JPH0317976Y2 (en) 1991-04-16
DE3564912D1 (en) 1988-10-20
DK314585A (en) 1986-01-12
JPS6191376U (en) 1986-06-13
ES287996Y (en) 1986-08-01
DE3425485A1 (en) 1986-01-16
ATE37149T1 (en) 1988-09-15

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