EP0815957A1 - Siebmaschine zum Sieben von Pulvermaterial - Google Patents
Siebmaschine zum Sieben von Pulvermaterial Download PDFInfo
- Publication number
- EP0815957A1 EP0815957A1 EP97108472A EP97108472A EP0815957A1 EP 0815957 A1 EP0815957 A1 EP 0815957A1 EP 97108472 A EP97108472 A EP 97108472A EP 97108472 A EP97108472 A EP 97108472A EP 0815957 A1 EP0815957 A1 EP 0815957A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sieve
- screening machine
- section
- machine according
- housing
- 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
Links
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
- B07B1/18—Drum screens
- B07B1/20—Stationary drums with moving interior agitators
Definitions
- the invention relates to a screening machine for screening powder material with a housing, one arranged in the housing Sieve and a conveyor for conveying the material over the sieve.
- a tubular sieve is usually used here, through which the powder material by means of a screw or a promoted rapidly rotating centrifuge while doing so the centrifugal force pressed against the screen surface from the inside becomes.
- the problem is observed that possibly due to the friction of the powder particles on the sieve and the resulting charging of the particles this powder particle occurs on the sieve, making a passage difficult or prevented by the sieve openings, if the sieve openings are sufficiently dimensioned. Thereby exact classification or screening is not possible. With Such devices can therefore be fine powders with grain sizes of maximum 250 ⁇ m can not be classified successfully. Other methods such as air sifting must be used there will.
- the object of the invention is a screening machine of the beginning to create the type described, in which this problem is not occurs.
- the object is characterized by one in claim 1 Screening machine released.
- the screening machine shown in FIG. 1 has a housing 1. This has a cylindrical first section 2 with an entrance at the top in the working position 3. A second section follows the first section 4 of the housing on its in working position below lying side a trough-shaped section 5 which is the deepest at its working position Position has an outlet opening 6.
- a cylindrical sieve 7 is arranged in the first section 2.
- This strainer is open at both ends Sieve cartridge designed.
- the second section 4 of the housing has a corresponding cylindrical on its end face 9 Opening for inserting or removing the sieve cartridge on.
- the sieve cartridge itself has holding elements at both ends 10, 11 with which a suitable screw firm connection to the second section 4 of the housing is formed.
- the sieve 7 is preferably made of a stainless steel sheet with sieve openings suitable size, in particular 100-200 ⁇ m and preferably 150 ⁇ m formed. Has the strainer because of the low Sheet thickness is not sufficient, then are on the two ends of the cylindrical sieve holders are provided for holding tension rods.
- the brush 12 contains a soul in the form of two twisted Wires, between which there are substantially radially extending Bristles are held so that the helical Windings around the soul with formed between the windings form free helical spaces.
- the length of the Bristles is chosen so that the outer diameter of the Soul and bristle formed brush is slightly larger than the inside diameter of the sieve.
- the bristles each consist of approximately 50% nylon or horsehair. Other suitable bristle materials can also be used will. The use of at least one is advantageous Part of horsehair, because this material is the static charge of the powder material.
- the slope of the winding of the bristles can be selected by the The number, size and shape of the twisted wires are selected appropriately will.
- the brush 12 is so in via the drive motor 14 Rotation displaces the brush from the input side to the Promotes exit side.
- One supplied via input 3 Powder material is then transferred from the input side to the output 8 promoted through the sieve.
- the bristles take on the additional Task, with their abutting the inner surface of the sieve and there, because of their increased length, snug ends to push the material through the sieve openings. So that is Sieving does not require centrifugal force, so the brush can rotate at a relatively slow speed.
- the shares larger grain size are at the free end 8 of the cylindrical Ejected.
- Figures 2 to 7 show a second embodiment and details the same. All of those features that match the first Embodiment match, are with the same reference numerals Mistake.
- the core 15 of the brush is best seen in FIG. 6 is made of two helically wound metal strips 16, 17 formed, between which are in the radial direction extending bristles 18 are held.
- the soul On the clutch side In the end, the soul has one that is best seen in FIG. 5 flat coupling piece 19 for engagement with the coupling 13 on.
- the filter cartridge is only on its side facing away from the entrance output end with holding elements 10 for non-rotatable Connect to the housing.
- the cartridge is, as best seen in Fig. 2 can be seen, only at the end on the output side attached to the holding member 10 and otherwise projects freely into the Housing inside. A bracket and alignment is done by the brush attached to the opposite end of the clutch 12th
- a screw conveyor 21 is provided, which is hollow and of the coupling-side end of the brush attached to this is, as can best be seen from Fig. 2.
- the Screw conveyor 21 has on its facing the clutch End on a closed bottom 22 shown in Fig. 4, the has in its center an opening 23 in shape and dimensions corresponds to the outer dimensions of the soul. To this way, the screw conveyor is attached to the soul and on this end carried by the soul and driven together with it.
- the powder fed through the inlet is first through the screw conveyor 21 to the sieve section promoted and then in the same way as the first Embodiment sieved.
- the embodiment shown in Fig. 8 differs from the embodiment shown in Fig. 2 in that the sieve 3 consecutive sections seen in the axial direction 24, 25, 26, each different from Have increasing hole sizes seen from the entrance to the exit. Each of the sections is a separate trough-shaped section 5, 27, 28 with associated outlet openings 6, 29, 30 assigned. Otherwise, the embodiment has the same Features on as the embodiment explained with reference to FIG. 2.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Eye Examination Apparatus (AREA)
- Holo Graphy (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Abstract
Description
- Fig. 1
- eine Schnittdarstellung einer ersten Ausführungsform;
- Fig. 2
- eine Schnittdarstellung einer zweiten Ausführungsform;
- Fig. 3
- eine Seitenansicht einer verwendeten Schnecke;
- Fig. 4
- eine Stirnansicht der in Fig. 3 gezeigten Schnecke;
- Fig. 5
- eine Seitenansicht der verwendeten Bürste;
- Fig. 6
- einen Schnitt durch die Bürste;
- Fig. 7
- eine Seitenansicht einer Siebpatrone; und
- Fig. 8
- eine schematische Seitenansicht einer dritten Ausführungsform der Siebmaschine.
Claims (9)
- Siebmaschine zum Sieben von Pulvermaterial, mit einem Gehäuse (1), einem im Gehäuse angeordneten Sieb (7), und einer Fördervorrichtung zum Fördern des Materials über das Sieb (7), dadurch gekennzeichnet, daß die Fördervorrichtung eine im wesentlichen parallel zur Siebfläche angeordnete schraubenförmig gewickelte Bürste (12) und einen mit der Bürste gekoppelten Antrieb (13, 14) zum Drehen der Bürste (12) aufweist.
- Siebmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das Sieb (7) als sich im wesentlichen horizontal erstreckender Siebzylinder ausgebildet ist.
- Siebmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Sieb (7) als in dem Gehäuse (1) auswechselbar befestigte Siebpatrone ausgebildet ist.
- Siebmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gehäuse (1) einen einen Eingang (3) aufweisenden ersten Abschnitt (2) und einen einen Ausgang (6) aufweisenden zweiten Abschnitt (4) aufweist.
- Siebmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in dem ersten Abschnitt (2) eine Förderschnecke vorgesehen ist.
- Siebmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Länge der Borsten (18) so gewählt ist, daß der Durchmesser der Bürste (12) größer ist als der Innendurchmesser des Siebes (7).
- Siebmaschine nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Borsten (18) zumindest teilweise aus Roßhaar bestehen.
- Siebmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Sieböffnungen einen Durchmesser von 100-200µm, vorzugsweise 150µm aufweisen.
- Siebmaschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Sieb (7) einen ersten Abschnitt (24) einer ersten Maschenweite und daran anschließend einen zweiten Abschnitt (25) einer zweiten Maschenweite und das Gehäuse (1) einen dem ersten Abschnitt (24) zugeordneten ersten Ausgang (6) und einen dem zweiten Abschnitt (25) zugeordneten zweiten Ausgang (29) aufweisen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29611141U | 1996-06-25 | ||
DE29611141U DE29611141U1 (de) | 1996-06-25 | 1996-06-25 | Siebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0815957A1 true EP0815957A1 (de) | 1998-01-07 |
EP0815957B1 EP0815957B1 (de) | 1999-04-07 |
Family
ID=8025678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97108472A Expired - Lifetime EP0815957B1 (de) | 1996-06-25 | 1997-05-26 | Siebmaschine zum Sieben von Pulvermaterial |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0815957B1 (de) |
DE (2) | DE29611141U1 (de) |
ES (1) | ES2132987T3 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2101722A (en) * | 1935-09-24 | 1937-12-07 | Schultz Edward | Bolting machine |
EP0353126A1 (de) * | 1988-07-25 | 1990-01-31 | Forplex S.A. | Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten |
FR2653042A1 (fr) * | 1989-10-18 | 1991-04-19 | Corberon Rene | Trieur mobile surbaisse avec table de secouage et brosse vis pour le calibrage des pois fourragers et des cereales. |
JPH0461971A (ja) * | 1990-06-26 | 1992-02-27 | Taabo Kogyo Kk | 多重選別円筒スクリーン分級機 |
DE9211176U1 (de) * | 1992-08-20 | 1992-10-29 | Häberle, Wilhelm, 72516 Scheer | Reinigungseinrichtung |
-
1996
- 1996-06-25 DE DE29611141U patent/DE29611141U1/de not_active Expired - Lifetime
-
1997
- 1997-05-26 DE DE59700124T patent/DE59700124D1/de not_active Expired - Fee Related
- 1997-05-26 ES ES97108472T patent/ES2132987T3/es not_active Expired - Lifetime
- 1997-05-26 EP EP97108472A patent/EP0815957B1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2101722A (en) * | 1935-09-24 | 1937-12-07 | Schultz Edward | Bolting machine |
EP0353126A1 (de) * | 1988-07-25 | 1990-01-31 | Forplex S.A. | Maschine zum Sieben von staubigen, mehligen oder körnigen Produkten |
FR2653042A1 (fr) * | 1989-10-18 | 1991-04-19 | Corberon Rene | Trieur mobile surbaisse avec table de secouage et brosse vis pour le calibrage des pois fourragers et des cereales. |
JPH0461971A (ja) * | 1990-06-26 | 1992-02-27 | Taabo Kogyo Kk | 多重選別円筒スクリーン分級機 |
DE9211176U1 (de) * | 1992-08-20 | 1992-10-29 | Häberle, Wilhelm, 72516 Scheer | Reinigungseinrichtung |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 016, no. 261 (C - 0950) 12 June 1992 (1992-06-12) * |
Also Published As
Publication number | Publication date |
---|---|
EP0815957B1 (de) | 1999-04-07 |
ES2132987T3 (es) | 1999-08-16 |
DE59700124D1 (de) | 1999-05-12 |
DE29611141U1 (de) | 1996-08-29 |
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