EP1981653B1 - Sieve - Google Patents
Sieve Download PDFInfo
- Publication number
- EP1981653B1 EP1981653B1 EP07700128A EP07700128A EP1981653B1 EP 1981653 B1 EP1981653 B1 EP 1981653B1 EP 07700128 A EP07700128 A EP 07700128A EP 07700128 A EP07700128 A EP 07700128A EP 1981653 B1 EP1981653 B1 EP 1981653B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screen
- drop
- box
- sieve
- channels
- 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
Links
- 238000012216 screening Methods 0.000 claims abstract description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 238000007873 sieving Methods 0.000 abstract 1
- 206010012735 Diarrhoea Diseases 0.000 description 5
- 239000006260 foam Substances 0.000 description 3
- 238000005187 foaming Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/38—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens oscillating in a circular arc in their own plane; Plansifters
-
- 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
Definitions
- the invention relates to a sieve, in particular a sieve for use in Plansichtern or the like screening and viewing devices for the screening of floury, granular or granular products.
- Such screens have a sieve box with bottom plate and fines discharge as well as a sieve frame covered with sieve cloth.
- the screen frame is, like the screen box with webs divided into fields, is fastener-free and form-fitting inserted into the sieve box.
- Such insert screen frame has a sufficiently high inherent rigidity, so that it is not deformed and does not need to be fixed with fasteners on the screen box.
- the screen frame is preferably made of metallic materials and covered with screen mesh.
- the product-carrying surfaces of the sieve box are preferably coated with plastic, the bottom plate is made of metal or plastic.
- the invention has for its object to develop a screen that allows a better performance adjustment to the product flow in the classifier, in particular Plansichter and is particularly suitable for very high performance.
- the solution of the task The sieve box has at least one diarrhea channel whose width is much higher than usual (usually about 6 cm), preferably at least 1.5 flat as wide. For example, a width of about 13 cm.
- two large outlet channels are preferably provided, which are arranged parallel to each other on the outer sides of the screen box.
- Sieves with such large diarrhea channels for the overflow are particularly for Kontrollsichtungen at high powers, eg. B. of up to 40 t / h per Siebabteil applicable. At the same time they allow better air circulation in the plan sifter.
- the outer dimensions (base area) of the screen are preferably identical in all embodiments.
- the sieve boxes are preferably filled with foam and provided with insertion sieves whose frames are made of metal, preferably made of stainless steel, in accordance with the disclosure according to EP-B-584302 ,
- the outlet box preferably has a modular construction, which, with a small number of molded parts, enables a high variety of outlet variants, also with regard to the number of product runs.
- a foamed from PUR sieve box 1 a sieve has a bottom plate 2 and partitions 4 for receiving a Einlegesiebrahmens 5 with webs and continue discharge channels and is bounded by side walls 3.
- the frame height of the screen box 1 is about 8 cm.
- the screen box 1 also has specifically designed corner pieces 7, on the one hand enable a good centering within outer side walls 3 and on the other hand large outlet channels and diarrhea channels 6.
- the width of these diarrhea channels 6 is about 13 cm, which allows a visual performance of about 35 t / h.
- the foamed screen box 1 has no sharp corners and edges, which simplifies cleaning. The wear is low.
- the insert screen frame 5 made of stainless steel is provided with a contour-matched seal, which ensures optimum tightness between insert screen frame 5 and screen box 1.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Die-Erfindung betrifft ein Sieb, insbesondere ein Sieb zur Anwendung in Plansichtern oder dergleichen Sieb- und Sichteinrichtungen zur Sichtung von mehligen, granularen oder körnigen Produkten.The invention relates to a sieve, in particular a sieve for use in Plansichtern or the like screening and viewing devices for the screening of floury, granular or granular products.
In der
Es ist auch bekannt, Siebrahmen aus Kunststoffen herstellen und zur Versteifung ein Metallskelett vorzusehen. Das Siebgewebe kann durch Umschäumen mit dem Siebrahmen verbunden werden.It is also known to produce sieve frames made of plastics and to provide a metal skeleton for stiffening. The screen mesh can be connected by foaming with the screen frame.
Ferner ist es nach der
Der Erfindung liegt die Aufgabe zugrunde, ein Sieb zu entwickeln, das eine bessere Leistungsanpassung an den Produktfluss im Sichter, insbesondere Plansichter ermöglicht und insbesondere für sehr hohe Leistungen geeignet ist. Die Lösung der Aufgabe erfolgt mit den Merkmalen des Patentanspruchs 1. Der Siebkasten weist mindestens einen Durchfallkanal auf, dessen Breite wesentlich höher als üblich (üblich sind ca. 6 cm) ist, bevorzugt mindestens 1,5flach so breit. Zum Beispiel eine Breite von ca. 13 cm.The invention has for its object to develop a screen that allows a better performance adjustment to the product flow in the classifier, in particular Plansichter and is particularly suitable for very high performance. The solution of the task The sieve box has at least one diarrhea channel whose width is much higher than usual (usually about 6 cm), preferably at least 1.5 flat as wide. For example, a width of about 13 cm.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen offenbart. So sind bevorzugt zwei grosse Auslaufkanäle vorgesehen, die parallel zueinander an den Aussenseiten des Siebkastens angeordnet sind. Siebe mit derart grossen Durchfallkanälen für den Überlauf sind besonders für Kontrollsichtungen bei hohen Leistungen, z. B. von bis zu 40 t/h je Siebabteil anwendbar. Sie ermöglichen zugleich eine bessere Luftzirkulation im Plansichter.Advantageous embodiments are disclosed in the subclaims. Thus, two large outlet channels are preferably provided, which are arranged parallel to each other on the outer sides of the screen box. Sieves with such large diarrhea channels for the overflow are particularly for Kontrollsichtungen at high powers, eg. B. of up to 40 t / h per Siebabteil applicable. At the same time they allow better air circulation in the plan sifter.
Die Aussenabmessungen (Grundfläche) des Siebes sind bei allen Ausführungsformen vorzugsweise gleich.The outer dimensions (base area) of the screen are preferably identical in all embodiments.
In weiterer Ausgestaltung sind die Siebkästen vorzugsweise ausgeschäumt und mit Einlegesieben versehen, deren Rahmen aus Metall bestehen, vorzugsweise aus rostfreiem Stahl, in Anlehnung an die Offenbarung gemäss
Der Auslaufkasten weist bevorzugt einen modularen Aufbau auf, was bei geringer Anzahl von Formteilen eine hohe Vielfalt an Auslaufvarianten ermöglicht, auch bzgl. der Anzahl der Produktläufe.The outlet box preferably has a modular construction, which, with a small number of molded parts, enables a high variety of outlet variants, also with regard to the number of product runs.
Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand einer Zeichnung näher beschrieben. In der Zeichnung zeigen die
- Fig. 1:
- einen Siebkasten in Draufsicht,
- Fig. 2:
- die Unteransicht eines geschäumten Siebkastens.
- Fig. 1:
- a sieve box in plan view,
- Fig. 2:
- the bottom view of a foamed screen box.
Ein aus PUR geschäumter Siebkasten 1 eines Siebes weist eine Bodenplatte 2 sowie Zwischenwände 4 zur Aufnahme eines Einlegesiebrahmens 5 mit Stegen und weiterhin Auslaufkanäle auf und ist von Seitenwänden 3 begrenzt. Die Rahmenhöhe des Siebkastens 1 beträgt ca. 8 cm.A foamed from PUR sieve box 1 a sieve has a bottom plate 2 and partitions 4 for receiving a
Der Siebkasten 1 weist zudem spezifisch ausgebildete Eckstücke 7 auf, die einerseits ein gutes zentrieren innerhalb äusserer Seitenwände 3 und andererseits grosse Auslaufkanäle und Durchfallkanäle 6 ermöglichen.The
Vorgesehen sind zwei breite Durchfallkanäle 6, die zwischen Siebrahmen 5 und Aussenwand des Siebkastens 1 angeordnet sind. Die Breite dieser Durchfallkanäle 6 beträgt ca. 13 cm, was eine Sichtleistung von ca. 35 t/h ermöglicht.Provided are two broad diarrhea channels 6, which are arranged between the
Der geschäumte Siebkasten 1 weist keine scharfen Ecken und Kanten auf, was die Reinigung vereinfacht. Der Verschleiss ist gering.The
Der Einlegesiebrahmen 5 aus rostfreiem Stahl ist mit einer konturangepassten Dichtung versehen, was eine optimale Dichtheit zwischen Einlegesiebrahmen 5 und Siebkasten 1 gewährleistet.The
Claims (5)
- Screen, in particular for use in plansifters or similar screening and sifting devices for sifting floury, grainy or granular products, consisting of a screen box (1) having a bottom panel (2) and at least one drop-through channel (6) for a product and also a screen insert frame (5) which is covered with a screen cloth, wherein the drop-through channel (6) is formed between the screen box (1) and outer side walls (3), characterized in that the screen box (1) has corner pieces (7), which project laterally over the bottom panel (2) in order to be able to centre the screen box (1) properly within the outer side walls (3) and in order to form large drop-through channels (6) having a width of at least 9 cm.
- Screen according to Claim 1, characterized in that the drop-through channel (6) is approximately 13 cm wide.
- Screen according to Claim 1 or 2, characterized in that two drop-through channels (6) are provided.
- Screen according to at least one of Claims 1 to 3, characterized in that the screen box (1) consists of a plastics material, in particular of a foamable plastics material.
- Screen according to at least one of Claims 1 to 4, characterized in that the screen insert frame (5) consists of metal, in particular of a stainless steel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006005967A DE102006005967A1 (en) | 2006-02-08 | 2006-02-08 | scree |
PCT/CH2007/000035 WO2007090304A1 (en) | 2006-02-08 | 2007-01-26 | Sieve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1981653A1 EP1981653A1 (en) | 2008-10-22 |
EP1981653B1 true EP1981653B1 (en) | 2011-10-19 |
Family
ID=38282277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07700128A Active EP1981653B1 (en) | 2006-02-08 | 2007-01-26 | Sieve |
Country Status (12)
Country | Link |
---|---|
US (1) | US20090084712A1 (en) |
EP (1) | EP1981653B1 (en) |
JP (1) | JP2009525852A (en) |
KR (1) | KR20080098483A (en) |
CN (1) | CN101378848B (en) |
AT (1) | ATE529197T1 (en) |
AU (1) | AU2007214235B2 (en) |
BR (1) | BRPI0707707A2 (en) |
DE (1) | DE102006005967A1 (en) |
ES (1) | ES2373332T3 (en) |
WO (1) | WO2007090304A1 (en) |
ZA (1) | ZA200806151B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITPD20110094A1 (en) * | 2011-03-28 | 2012-09-29 | Omas Srl | SIZE HOLDER FRAME |
CH720205A1 (en) * | 2022-11-07 | 2024-05-15 | Swisca Ag | Sieving device for plan sifters for fractionating grain mill products |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2455383A (en) * | 1947-09-16 | 1948-12-07 | Richmond Mfg Company | Screen for gyratory sifters, screens, or bolting equipment |
US3422955A (en) * | 1966-04-11 | 1969-01-21 | Smico Inc | Superimposed gyratory sifters |
CH625430A5 (en) * | 1977-11-22 | 1981-09-30 | Budapesti Elelmiszeripari Gepg | Basic frame for screening boxes |
DE4101710A1 (en) * | 1991-01-22 | 1992-07-23 | Hein Lehmann Trenn Foerder | SCREEN AREA FOR A SCREENING MACHINE |
CH685604A5 (en) * | 1992-02-29 | 1995-08-31 | Buehler Ag | Plansifter. |
JP3316032B2 (en) * | 1993-05-11 | 2002-08-19 | 日清製粉株式会社 | Sieve frame for granular material sieving machine |
US5598931A (en) * | 1994-10-11 | 1997-02-04 | Nisshin Flour Milling Co., Ltd. | Sifter frame for powder particle sifter |
JP3479565B2 (en) * | 1994-10-28 | 2003-12-15 | 日清製粉株式会社 | Sieve frame for multi-stage lamination type used for granular material sieve device |
DE19706601C1 (en) * | 1997-02-20 | 1998-11-12 | Buehler Ag | Screen frame for plansifter and process for its production |
DE19825617A1 (en) * | 1998-06-08 | 1999-12-09 | Filip Gmbh Muellereibuersten | Device for cleaning the sieve frame and bottom of a sieve box |
JP4176226B2 (en) * | 1999-02-25 | 2008-11-05 | 日清製粉株式会社 | Method for screening powder particles |
DE102007004150A1 (en) * | 2007-01-22 | 2008-07-24 | Bühler AG | Plansichter |
-
2006
- 2006-02-08 DE DE102006005967A patent/DE102006005967A1/en not_active Withdrawn
-
2007
- 2007-01-26 CN CN200780004855XA patent/CN101378848B/en active Active
- 2007-01-26 EP EP07700128A patent/EP1981653B1/en active Active
- 2007-01-26 WO PCT/CH2007/000035 patent/WO2007090304A1/en active Application Filing
- 2007-01-26 JP JP2008553593A patent/JP2009525852A/en active Pending
- 2007-01-26 AU AU2007214235A patent/AU2007214235B2/en not_active Ceased
- 2007-01-26 AT AT07700128T patent/ATE529197T1/en active
- 2007-01-26 BR BRPI0707707-6A patent/BRPI0707707A2/en not_active IP Right Cessation
- 2007-01-26 KR KR1020087016347A patent/KR20080098483A/en not_active Application Discontinuation
- 2007-01-26 ES ES07700128T patent/ES2373332T3/en active Active
- 2007-01-26 US US12/278,539 patent/US20090084712A1/en not_active Abandoned
-
2008
- 2008-07-15 ZA ZA200806151A patent/ZA200806151B/en unknown
Also Published As
Publication number | Publication date |
---|---|
AU2007214235B2 (en) | 2011-04-21 |
WO2007090304A1 (en) | 2007-08-16 |
KR20080098483A (en) | 2008-11-10 |
CN101378848B (en) | 2013-02-13 |
AU2007214235A1 (en) | 2007-08-16 |
JP2009525852A (en) | 2009-07-16 |
ES2373332T3 (en) | 2012-02-02 |
CN101378848A (en) | 2009-03-04 |
DE102006005967A1 (en) | 2007-08-09 |
ATE529197T1 (en) | 2011-11-15 |
EP1981653A1 (en) | 2008-10-22 |
ZA200806151B (en) | 2009-04-29 |
BRPI0707707A2 (en) | 2011-05-10 |
US20090084712A1 (en) | 2009-04-02 |
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