EP1370373B1 - Siebbelag und siebmaschine mit einem solchen siebbelag - Google Patents

Siebbelag und siebmaschine mit einem solchen siebbelag Download PDF

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Publication number
EP1370373B1
EP1370373B1 EP02722223A EP02722223A EP1370373B1 EP 1370373 B1 EP1370373 B1 EP 1370373B1 EP 02722223 A EP02722223 A EP 02722223A EP 02722223 A EP02722223 A EP 02722223A EP 1370373 B1 EP1370373 B1 EP 1370373B1
Authority
EP
European Patent Office
Prior art keywords
strip
section
profile
screening
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.)
Expired - Lifetime
Application number
EP02722223A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1370373A1 (de
Inventor
Anton Bokor
Timo SCHÄFER
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.)
Ludwig Krieger Draht und Kunststofferzeugnisse GmbH
Original Assignee
Ludwig Krieger Draht und Kunststofferzeugnisse 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
Priority claimed from DE2001113401 external-priority patent/DE10113401A1/de
Priority claimed from DE2001122612 external-priority patent/DE10122612A1/de
Application filed by Ludwig Krieger Draht und Kunststofferzeugnisse GmbH filed Critical Ludwig Krieger Draht und Kunststofferzeugnisse GmbH
Publication of EP1370373A1 publication Critical patent/EP1370373A1/de
Application granted granted Critical
Publication of EP1370373B1 publication Critical patent/EP1370373B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • 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

Definitions

  • the invention relates to a Siebbelag with juxtaposed sieve elements made of plastic, which are releasably secured by a separate, arranged between them plastic profile steel profiles of a support structure, wherein the plastic profile in an upper region and the sieve elements have on their the plastic profile facing end faces corresponding engagement profiles, the are held in positive engagement by means of an insertable from above into the plastic profile fastener, and the plastic profile has an engaging in the steel profile lower portion. It is also directed to a screening machine with such a screen covering.
  • the support structure consists of longitudinally and / or transversely extending steel profiles in the machine frame, which are open at the top, for example in the form of C-profiles, or are formed as angle profiles with spaced-apart holes.
  • the sieve elements made of plastic, usually made of PU casting resin, placed side by side and / or one behind the other. They correspond in their dimensions the distances of the steel profiles of the supporting structure.
  • the screen elements and their attachment must be designed so that they can absorb the loads of the screenings and the dynamic stresses occurring during operation, without being detached from the supporting structure. On the other hand, the attachment must be such that individual, worn screen elements can be easily replaced.
  • a separate, strip-shaped plastic profile having a continuous foot profile in its lower part, which engages resiliently latching in the open steel profile of the support structure, and in its upper region on both sides engagement profiles having with corresponding engagement profiles on the mutually facing end faces of the screen elements cooperates.
  • the sieve elements themselves overlap with their end faces the plastic profile, which is thus covered by the sieve elements. At the top only a small gap between the end faces of the sieve elements is still present.
  • the plastic profile directly above the foot profile on both sides cover strips, which rest on the steel profile of the support structure.
  • Both of the aforementioned embodiments have the advantage that the sieve elements are flat on the top and bottom, whereby the casting of the sieve elements is facilitated and the mold costs can be kept low.
  • Another known screen covering ( DE 27 49 489 B2 ) consists of sieve elements which have at their mutually facing end faces downwardly projecting profiles, with which they engage in both sides of the open steel profile of the support structure. Between the mutually facing end faces of the sieve elements, there is a gap into which a wedge strip is driven in from above, which penetrates into the steel profile of the support structure and thereby spreads the integrally formed on the underside of the screen elements profiles below the opening of the steel profile of the support structure to the outside. To replace a sieve, the wedge bar must be pulled. For this purpose, corresponding depressions are provided on the surface of the sieve elements and transverse breakthroughs are provided on the wedge strip in order to be able to apply a hook-shaped pulling tool.
  • a disadvantage is the projection of the heads of the expanding mandrels on the sieve surface and the lack of protection of the steel profiles of the supporting structure. Since the expanding mandrel both the forces in the terminal area of the screening elements and the forces for the attachment of the Apply plastic profiles to the support structure and must accommodate, apply correspondingly high forces for the replacement of individual sieve elements, and indeed several times due to the large number of expanding mandrels. Also, the plastic profiles can be unintentionally pulled out when lifting the screen elements.
  • the screen elements are loosely on lateral flanges of the plastic profile.
  • the plastic profile has on the upper side a recess into which a wedge strip can be driven in and latched over corresponding toothings.
  • the sieve elements are clamped between a cross-sectionally hat-shaped head of the wedge strip and the side flanges of the profile strip. Also here is the loosening of the latched wedge bar power consuming and the resting on the sieve elements hat-shaped head of the wedge strip is undermined by Siebgut so that the screenings builds up under the head under the action of vibration.
  • the invention has for its object to enable easier assembly and disassembly of the screening elements and also to prevent the access of screenings and / or water to the steel profiles of the support structure.
  • this object is achieved in that the plastic profile as a profile strip, the fastening means as a wedge strip and the engagement profiles are formed continuously, and in that the profile strip has a continuous, upwardly open, the wedge strip receiving, groove-like depression whose Enclosing profiles enclosing side walls are elastically yielding at least in the direction of each other, wherein the profile strip is recessed relative to the top of the screen elements, the wedge strip has a head profile which fills the space above the profile strip and between the end faces of the screen elements and substantially flush with the top of completes adjacent sieve elements.
  • the sieve elements can be mounted with very little effort. They are either pushed laterally with their engagement profile on the engagement profile of the profile strip or pushed from above. In this case, the resilient side walls of the channel-shaped depression soft inward elastically. Only after this pre-assembly of the sieve elements, which requires almost no effort, the final positive engagement between the engagement profiles on the sieve elements and the profile strip is made by the easy and easy to use wedge bar, which produces only forces acting on the side for positive engagement.
  • the continuous wedge strip is first released.
  • the force must be applied only at one end and can then easily remove the wedge strip over the entire length.
  • the sieve elements can be easily lifted out, since the part of the profile strip facing them elastically deflects inwards.
  • the term "wedge bar” does not necessarily imply a wedge shape, but rather includes any shape which ensures that the lateral engagement profiles of the profile bar are positioned or held in position; to ensure a tight fit with the engagement profiles of the screening elements. For this purpose, even a mere elastic deformation is sufficient, which also ensures a good seal at the top of the sieve elements. In addition, since the depression is closed at the bottom, at this point neither screenings, nor water can penetrate to the steel profiles of the supporting structure. This is further supported by the fact that the profiled strip is arranged sunk relative to the top of the sieve elements, wherein the wedge strip in particular has a head profile which fills the space above the profile strip and between the end faces of the sieve elements. In this way, a slightly wider surface on the wedge bar, which facilitates insertion and also, also in this area an elastic deformation in the region of the head profile and / or the sieve elements allows to obtain a gap-free connection.
  • the head profile of the wedge bar terminates substantially flush with the top of the adjacent sieve elements, so that there is a flat surface of the Siebbelags.
  • the profile strip preferably has a foot profile engaging into the steel profile of the supporting structure in its lower region.
  • the profile strip immediately above its foot profile on both sides passing, the steel profile of the support structure resting cover strips, which rest the sieve elements from above, so that even if screenings and / or water should penetrate between the sieve elements, in any case the steel profiles are protected.
  • the engagement profile has on both sides of the profile strip on the upper side an inlet contour for the correspondingly formed engagement profile on the sieve elements.
  • the inlet contour may be z. B. be inclined surfaces, curved surfaces or the like, which only have the function to facilitate the placement of the screen elements from above.
  • the engagement profile can be undercut on both sides of the profile strip on the underside, which is advantageous for a positive fit of the screen elements in the mounted position.
  • the undercut does not interfere with the onset of the sieve elements, nor with their replacement, since only subsequently retrieved the wedge strip or be solved'wird, so that when inserting or replacing the sieve element, the wall of the profile strip can deform into the groove-like depression.
  • the channel-like depression of the profiled strip and / or the wedge strip can have latching means on their mutually facing sides.
  • the groove-like depression and / or the wedge strip can be profiled to increase the friction, wherein the profiling is possibly still elastically deformable to increase the adhesive forces between the wedge strip and the profile strip.
  • the head profile expediently extends over the entire length of the wedge strip, and instead may also be provided that the head profile is interrupted on the length of the wedge strip.
  • the wedge strip and the head profile are integrally formed in an advantageous embodiment.
  • the foot profile of the profile strip is formed as a continuous elastically deformable profile. If, on the other hand, the supporting structure has profiles, for example angle profiles, with spaced-apart holes, the foot profile of the profile strip consists of correspondingly spaced locking pins.
  • the edge element has a screen elements corresponding engagement profile and the wedge strip corresponding edge profile with a profile strip cross section corresponding to the head portion of the wedge strip and engaging in the trough-like depression of the profile strip section corresponding to the wedge strip.
  • the edge element has at its the screen element to be connected facing a corresponding thereto engagement profile, in the open top steel profile of the support structure elastically engaging foot profile and above a the wedge strip receiving, groove-like depression.
  • the invention also relates to a screening machine with a screen covering of the aforementioned type.
  • the housing 1 has a housing 2 and a frame-like support structure made of parallel steel profiles 3, which are formed in the embodiment shown as a tube or box profiles in the manner of lying C-profiles and thus open at its top. Furthermore, the support structure on transverse, not shown in the drawing steel profiles.
  • the Siebbelag 4 which consists of individual sieve elements 5 and edge elements 6 and 7, wherein If appropriate, the edge elements 6, 7 also assume a different function during the sieving process.
  • the sieve elements 5 are detachably fastened to the steel profiles 3 of the supporting structure at their two longitudinal sides, while the edge elements 6 and 7 are fixed to the steel profiles 3 only at their longitudinal sides facing the sieve elements 5 and at their outer longitudinal sides to angle profiles 9 on the screening machine housing 2 are fixed.
  • the steel profile 3 of the support structure has on its upper side a continuous slot 10, which serves for releasably securing the screen elements 5.
  • a profile strip 11 is provided, which engages with an elastically deformable base section 20 in the slot 10 of the steel section 3 latching.
  • the profile strip 11 has in its upper region longitudinally extending engagement profiles 12, 13 which cooperate with corresponding engagement profiles 14, 15 on the profile strip 11 facing end faces 16, 17 of the screen elements 5.
  • the profiled strip 11 further has in its upper region a groove-like recess 18 and in the region between the profile leg 20 and the engagement profiles 12, 13 on both sides projecting cover strips 19, 21, the both sides of the base profile 20 the steel profile 3 of the support structure rest on the upper side and the slot 10th cover.
  • a wedge strip 22 is provided, which is formed from a narrow strip 23 with a head profile 24.
  • the profile strip 11 is first pressed with its base profile 20 in the slot 10 of the steel section 3 of the support structure, wherein the base profile 20 is first compressed elastically inwardly and spreads after passing through the slot 10 of the steel section 3 to the outside.
  • the strips 19, 21 reach the rest on the top of the steel section 3.
  • the sieve element 5 shown in Fig.3 is pushed with its engagement profile 14 on the engagement profile 12 of the profile strip 11 from the side or pushed from above, wherein the profile strip 11 on this side resiliently rebounded in the direction of the recess 18.
  • the adjacent screen element 5 ( Figure 4) is pressed from above, optionally with a slight inclined position, wherein the facing her wall of the profile strip 11 in the channel-like recess 18 elastically evades.
  • the wedge strip 22 is pressed in from above until its head profile 24 fills the free space above the profile strip 11 and is flush with the surface of the sieve elements 5.
  • the bar 23 of the wedge bar 22 urges the engagement profiles 12, 13 to the outside and there is a tight fit with the engagement profiles 14, 15 at the end faces of the sieve elements 5.
  • the pre-assembly of the sieve elements 5 and the indentation of the wedge strip 22 can be done manually.
  • a sieve element 5 For the removal of a sieve element 5 only needs the wedge bar 22 at one end, for example, at the upper or lower edge in Fig.2, under attacked and pulled upwards. It can then be pulled out by hand over the entire length. Subsequently, the sieve element 5 can be easily lifted out, wherein the side facing him the profile strip 13 elastically dodges into the recess 18.
  • the profiled strip 11 has at the opposite opening edges of the recess 18 slightly inwardly projecting lugs 25 which engage in corresponding recesses 26 between the head profile 24 and the bar 23. Furthermore, the strip 23 may be provided on its surface with a weak profiling 27 with excess relative to the recess 18, which supports by increased friction, optionally supported by an elastic deformation, the tension of the wedge strip 22 in the recess 18.
  • FIG. 5 shows the edge element 6 of Siebbelags 4 according to Figure 1, which forms the edge-side termination on the machine housing. It is essentially provided with the same screen openings as the screen elements 5.
  • the edge element 6 rests on the machine housing 1 on an angle section 9.
  • the edge element 6 is provided with a recessed engagement profile 28 which corresponds to the engagement profile 13 of the profile strip 11.
  • the edge element 6 has a groove-like recess 29 corresponding to the recess 18 of the profile strip 11.
  • the edge element 6 has a downwardly projecting profile leg 30, with which the edge element 6 is fixed by elastic spreading in the slot 10 of the steel profile 3.
  • edge element 6 rests with an offset step 31 on the one hand and a strip-like extension 32 on the other hand on the upper side of the steel profile 3.
  • the edge element 6 and the adjacent screen element 5 are in turn fastened with the previously described wedge strip 22.
  • the usual profile strip 11 described above is provided which has the engagement profile 12, 13 and the recess 18 on both sides.
  • the edge element 7 - as the sieve elements 5 (Fig. 2, 3) - formed flat on the top and bottom. It has at its the sieve elements 5 facing end side a strip-shaped profile 33 corresponding to the engagement profile of the screen elements and the profile strip 11 cross section 34 with an integrally formed on the underside of the wedge strip 35 which engages in the recess 18 of the profile strip 11. In this way, can be connected to the edge element 7 of the above-described screen element 5 in the same manner.
  • FIG. 7 and 8 show another variant of a screening machine, in which the sieve elements are arranged transversely to the Siebguttransport 8.
  • the attachment of the sieve elements 5 to the steel profiles 3 of the support structure is carried out in the same manner, as described above, namely by means of the profile strips 11 and the wedge strips 22.
  • Fig.9 is shown enlarged.
  • Such edge element 36 has, like the edge element 6 according to FIG. 5, a profile designated overall by 37 and a foot profile 38 on its front side facing the sieve elements. By means of the latter, the edge element 36 is inserted elastically spreading in the slot 10 of the steel profile 3.
  • the screen element has a groove-like recess 39 for receiving the wedge strip 22, which terminates flush with the top of the edge element 36.
  • the groove-like depression 18 is provided with an enlargement 40 in the lower region.
  • the wedge strip 22 has at the lower end of the bar 23 a latching foot 41 which engages after pressing the wedge strip in the extension 40.
  • the head profile 24 of the wedge bar 22 is provided with a chamfer 42, which cooperates with a complementary to the contour of the chamfer 42 projection on the front side of the adjacent sieve elements (not shown), so that the wedge strip 22 in addition to the Screen elements is fixed and the surface of the head profile 24 of the wedge bar 22 with the top of the sieve elements, for example forms a flat surface or even surmounted the surface of the screen elements in order to divert the screenings on the screen surface.
  • the elevation 42 may in the latter case over the entire length of the head profile 42 of the wedge strip 22 pass through or be formed only partially with a projection with respect to the screen surface to force a migration of the screenings transverse to the wedge strip 22.
  • the chamfer 42 may also be provided on the end faces of the sieve elements and the projection on the sides of the wedging bar 22 facing the latter or of the head profile 42 of the wedging bar 22 (not shown).
  • the channel-like depression 29 of the edge element 6 according to FIG. 5 is equipped with a corresponding extension 40 and / or the molded-in wedge strip 35 of the edge element 7 according to FIG. 6 with a corresponding latching foot 41.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Dental Preparations (AREA)
EP02722223A 2001-03-19 2002-03-15 Siebbelag und siebmaschine mit einem solchen siebbelag Expired - Lifetime EP1370373B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10113401 2001-03-19
DE2001113401 DE10113401A1 (de) 2001-03-19 2001-03-19 Siebbelag
DE10122612 2001-05-10
DE2001122612 DE10122612A1 (de) 2001-05-10 2001-05-10 Siebbelag
PCT/EP2002/002879 WO2002074454A1 (de) 2001-03-19 2002-03-15 Siebbelag und siebmaschine mit einem solchen siebbelag

Publications (2)

Publication Number Publication Date
EP1370373A1 EP1370373A1 (de) 2003-12-17
EP1370373B1 true EP1370373B1 (de) 2007-07-25

Family

ID=26008833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02722223A Expired - Lifetime EP1370373B1 (de) 2001-03-19 2002-03-15 Siebbelag und siebmaschine mit einem solchen siebbelag

Country Status (7)

Country Link
EP (1) EP1370373B1 (cs)
AT (1) ATE367867T1 (cs)
CZ (1) CZ303783B6 (cs)
DE (1) DE50210551D1 (cs)
ES (1) ES2291462T3 (cs)
PL (1) PL201581B1 (cs)
WO (1) WO2002074454A1 (cs)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030892A1 (de) * 2006-07-04 2008-01-10 Voith Patent Gmbh Verfahren zur Herstellung von Sieben sowie dadurch hergestelltes Sieb
US7861866B1 (en) 2008-03-07 2011-01-04 Tema Isenmann, Inc. Screening system with knocking device
AU2012208984B2 (en) * 2011-07-26 2014-02-13 Lettela Pty Limited Screen panel fixing system
BR112017015232B1 (pt) * 2015-01-16 2020-12-29 Sandvik Intellectual Property Ab cobertura alongada para suportar meio de peneiramento tensionado em um deck de peneira e deck de peneira

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980555A (en) * 1973-08-24 1976-09-14 Screenex Wire Weaving Manufacturers Limited Replacable screen with frame
DE3307916A1 (de) * 1983-03-05 1984-09-06 Hein, Lehmann AG, 4000 Düsseldorf Siebbelag mit auswechselbaren siebelementen
CS246481B1 (cs) * 1984-04-24 1986-10-16 Josef Smehlik Třídicí plocha
DE3425485A1 (de) * 1984-07-11 1986-01-16 Hein, Lehmann AG, 4000 Düsseldorf Siebbelag
ZA883971B (cs) * 1987-09-26 1988-12-05
US5112475A (en) * 1990-08-06 1992-05-12 Conn-Weld Industries, Inc. Panel mounting system
US5277319A (en) * 1990-08-06 1994-01-11 Conn-Weld Industries, Inc. Panel mounting system
FR2690489B1 (fr) * 1992-04-24 1994-12-23 Giron Holding Système de fixation de panneaux modulaires de criblage sur une structure de maintien.
DE4303892C2 (de) * 1993-02-10 2001-07-12 Ludwig Krieger Draht Und Kunst Siebbelag
AUPM888594A0 (en) * 1994-10-19 1994-11-10 Lettela Proprietary Limited Screen panel fixing system
US5755334A (en) * 1996-03-19 1998-05-26 Illinois Tool Works Inc. Method and apparatus for mounting a panel on a support member
AUPO213796A0 (en) * 1996-09-05 1996-09-26 Lettela Proprietary Limited Modular screen panel

Also Published As

Publication number Publication date
PL201581B1 (pl) 2009-04-30
CZ303783B6 (cs) 2013-05-02
WO2002074454A1 (de) 2002-09-26
DE50210551D1 (de) 2007-09-06
ATE367867T1 (de) 2007-08-15
ES2291462T3 (es) 2008-03-01
PL363721A1 (en) 2004-11-29
CZ20032482A3 (cs) 2004-02-18
EP1370373A1 (de) 2003-12-17

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