EP1591171A1 - Schüttgut-Sichter - Google Patents
Schüttgut-Sichter Download PDFInfo
- Publication number
- EP1591171A1 EP1591171A1 EP05006195A EP05006195A EP1591171A1 EP 1591171 A1 EP1591171 A1 EP 1591171A1 EP 05006195 A EP05006195 A EP 05006195A EP 05006195 A EP05006195 A EP 05006195A EP 1591171 A1 EP1591171 A1 EP 1591171A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- bulk material
- jacket
- cylindrical
- sifter
- 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
- 239000013590 bulk material Substances 0.000 title claims description 60
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000011800 void material Substances 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 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
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
-
- 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/02—Selective separation of solid materials carried by, or dispersed in, gas currents by reversal of direction of flow
-
- 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
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
Definitions
- the invention relates to a bulk material classifier according to the preamble of Claim 1.
- the funnel is from passes through a displacement body having a conical tip, which protrudes into the muzzle section and together with this one limited downwardly expanding bulk material feed channel.
- Discharge funnel is from a further downwardly extending container-like Housing area surrounded, in the upper area of an inlet nozzle opens for reformulation, above the lower end of the Guiding funnel. At this container-like housing area closes Outlet cone with a lower outlet spigot on. The sighting of the Bulk material fed through the bulk material feed tube takes place immediately below the mouth section. In the bulk material feed channel is the bulk material accelerates to a widening bulk stream, the as a cone-shaped bulk material jet enters the funnel.
- From DE 44 16 757 C2 is also a deflection countercurrent separator trained bulk material classifier known, whose classifier coat of two formed down to successive mantle sections is. There is provided a displacer, which is part of the lower Sheath section and the upper sheath section interspersed. From the Upper mantle section emits an outlet spigot for air and fines of the bulk material. The lower coat section is in its lower Surrounded by an air-feeding area, into which an inlet-neck for visible air enters. Down to this is followed by an outlet cone. The classifying air exits the air supply space around the lower edge of the lower one Coat section in this one and rises under sifting of the bulk material up.
- the invention is based on the object, a bulk material classifier of the generic To develop the kind so that the sighting quality at the same time Reduction of sound development is improved.
- the bulk material classifier according to the invention remains not only the already existing in the generic bulk material classifier Visible zone preserved, but it will be an additional second lower Visual zone created so that a total of more intense sighting takes place.
- the bulk material veil opposite Classified air flow is the bulk material before reaching the outlet cone brakes and bounces consequently with reduced fall speed the viewing space boundary wall, causing grain breakage and sound development be reduced. Since the sight space boundary wall is still from the Surrounding the air supply room, the sound radiation to the outside is still reduced.
- Claim 2 specifies measures by which the air inflow from below in the limited by the reformraum-boundary wall second viewing zone is optimized.
- the development according to claim 3 indicates that the hopper already represents the outer wall of the bulk material classifier. This will be the Bulk classifier smaller and the material required for its production is reduced. As a result, at the same time the production costs reduced.
- a deflecting countercurrent sifter trained Bulk material sifter has a substantially vertically arranged, rotationally symmetrical sifter sheath 1 on. This consists in his upper portion of a first cylindrical shell portion 2, from a side outlet nozzle 3 for air and light bulk material shares opens. At the cylindrical shell section 2 closes after below a frusto-conically tapering jacket section 4, on in turn, a downwardly truncated cone-shaped Leittrichter 5 follows.
- the classifier jacket 1 in the upper cylindrical shell section 2, opens centrally from above a bulk material supply pipe 6 that to a bulk material delivery pipe 7 via a deflection flange 8 with a Baffle plate 9 is connected.
- the baffle plate 9 is used for equalization the deflection of a bulk material flow.
- the bulk material supply pipe 6 is designed as an acceleration tube and has this one on the deflection flange 8 subsequent first tube section 10, whose Cross-section smaller than that of the bulk material delivery pipe 7 is.
- the Bulk feed tube 6 has a second tube section, the Cross section in turn is smaller than the cross section of the first tube section.
- the second tube section 11 goes down into a conically widening mouth section 12 of the bulk material supply pipe 6 above.
- the mouth opening 13 of this mouth portion 12 is approximately at half height of the frusto-conically tapering coat section 4 of the sifter jacket 1.
- the displacement body 14 is in a holder 16 in the lower region the sifter coat 1 held.
- the second cylindrical shell portion 17 is a conical to bottom tapered viewing space boundary wall 20 provided on the Transition from the funnel 5 to the second cylindrical shell section 17 is connected to the classifier jacket 1. At the bottom of it goes they over into a cylindrical wall portion 21. This extends to into the outlet cone 18 and limited between its lower submitzonen opening 22 and the outlet cone 18 an annular Throttle gap 23.
- the cross section of this annular throttle gap 23 is several times smaller than the largest cross section of the annular Air supply space 24, between the second cylindrical wall portion 17 and the viewing space boundary wall 20 and the cylindrical Wall section 21 is limited.
- the cross section of the throttle gap 23 is 30 to 50 percent of the cross section of the annulus 24 in the range between the second cylindrical shell portion 17 and the cylindrical Wall section 21. In this annulus 24 opens in the lower area of the second cylindrical shell portion 17 an inlet nozzle 25 for classifying air.
- a first viewing zone 26 is in the region of the frusto-conical shell section 4 formed. Within the cylindrical wall portion 21 and the viewing space boundary wall 20 is a second viewing zone 27 is formed.
- the only indicated bulk material 28 passes through the bulk material delivery pipe. 7 and the deflection flange 8 with the baffle plate 9 in the bulk material feed tube 6 and is in this by the narrowing of the first Tube section 10 to the second pipe section 11 accelerates. Between the mouth portion 12 and the tip 15 of the displacer 14th an expanding annular bulk material introduction channel 29 is formed.
- the cross section of the bulk material introduction channel 29 is over its full Length equal to the cross section of the second pipe section 11.
- the bulk material 28 becomes a conical bulk material jet widened, which widens along the dashed line 30, the the extension of the conical mouth portion 15 forms.
- the rate of rise of the classifying air in the second classifying zone 27 is in Depending on the falling speed of the bulk material 28 is set, d. H. it is of the grain size, the density of the bulk material 28 and its entrance speed in the first viewing zone 26 dependent.
- the climbing speed the classifying air in the second classifying zone 27 is adjusted that they are 30 to 150 percent, preferably 40 to 80 percent, of the free Fall speed of the individual grains of the bulk material 28 is. hereby Among other things, a desired braking of the bulk material 28 occurs. If, however, the rate of climb would be too high, the individual could Grains of the bulk material 28 are blown back, which is undesirable would.
- the classifying air passes through the inlet connection 25 into the air supply space 24 one. Due to the flow resistance occurring in the throttle gap 23 occurs a uniform distribution of the classifying air over the entire circumference this air feed space 24, so that one over the entire cross section the preparezonen opening 22 uniform view air flow in the second viewing zone 27 occurs.
- the bulk veil before hitting the conically tapered Viewing space boundary wall 20 is braked in the stream of visual air, is due to the impact of the bulk material on the viewing space boundary wall 20 generated sound and also reduces the grain breakage. Further, since the viewing space boundary wall 20 within the second cylindrical shell portion 17 of the sifter jacket 1 is arranged is the sound generated in the viewing space boundary wall 20 not delivered directly to the outside.
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Claims (4)
- Schüttgut-Sichter miteinem im Wesentlichen rotationssymmetrischen, vertikal angeordneten Sichter-Mantel (1), dereinen oberen zylindrischen Mantel-Abschnitt (2) aufweist,einen sich an den Mantel-Abschnitt (2) anschließenden, sich kegelstumpfförmig verjüngenden Mantel-Abschnitt (4),einen sich hieran anschließenden, sich kegelstumpfförmig erweiternden Leittrichter (5) undeinen aus dem zylindrischen Mantel-Abschnitt (2) ausmündenden Austritt-Stutzen (3) für Luft und leichte Schüttgutanteile aufweist,einem Schüttgut-Zuführrohr (6), dasvon oben in den zylindrischen Mantel-Abschnitt (2) einmündet,nach unten gerichtet ist,im Bereich seines unteren Endes einen sich kegelstumpfförmig erweiternden Mündungs-Abschnitt (12) aufweist undim Bereich des sich kegelstumpfförmig verjüngenden Mantel-Abschnitts (4) endet,einem Verdrängerkörper (14) mit einer Spitze (15), diein den sich kegelstumpfförmig erweiternden Mündungs-Abschnitt(12) des Schüttgut-Zuführrohres (6) hineinragt undmit dem Mündungs-Abschnitt (12) einen sich nach unten erweiternden, ringförmigen Schüttgut-Einführkanal (28) begrenzt,einem dem Leittrichter (5) nachgeordneten zweiten zylindrischen Mantel-Abschnitt (17) undeinem sich nach unten an den zweiten zylindrischen Mantel-Abschnitt (17) anschließenden Auslaufkonus (18),eine im zweiten zylindrischen Mantel-Abschnitt (17) angeordnete, sich nach unten verjüngende Sichtraum-Begrenzungswand (20), die einen unteren zylindrischen Wandabschnitt (21) aufweist,zwischen der und dem zweiten zylindrischen Mantel-Abschnitt (17) ein ringförmiger Luft-Zuführraum ausgebildet ist,einen Drosselspalt (23) zwischen dem Auslaufkonus (18) und der Sichtraum-Begrenzungswand (21) undeinen in den Luft-Zuführraum (24) einmündenden Eintritts-Stutzen (25) für Sichtluft.
- Schüttgut-Sichter nach Anspruch 1, dadurch gekennzeichnet, dass der Leittrichter (5) und der mit diesem verbundene zweite zylindrische Mantel-Abschnitt (17) äußere begrenzende Teile des Sichter-Mantels (1) sind.
- Schüttgut-Sichter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Querschnitt des Drosselspaltes (23) etwa 30 bis 50 Prozent des Querschnitts des Luft-Zuführraums (24) beträgt.
- Schüttgut-Sichter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass unterhalb des Mündungs-Abschnitts (12) des Schüttgut-Zuführrohres (6) und innerhalb des sich kegelstumpfförmig verjüngenden Mantel-Abschnitts (4) des Sichter-Mantels (5) eine erste Sichtzone (26) ausgebildet ist und
dass oberhalb des Drosselspalts (23) und innerhalb der Sichtraum-Begrenzungswand (20) eine zweite Sichtzone (27) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004020379 | 2004-04-23 | ||
DE200410020379 DE102004020379A1 (de) | 2004-04-23 | 2004-04-23 | Schüttgut-Sichter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1591171A1 true EP1591171A1 (de) | 2005-11-02 |
EP1591171B1 EP1591171B1 (de) | 2007-05-09 |
Family
ID=34934419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050006195 Active EP1591171B1 (de) | 2004-04-23 | 2005-03-22 | Schüttgut-Sichter |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1591171B1 (de) |
DE (2) | DE102004020379A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7068374B2 (en) | 2003-06-09 | 2006-06-27 | Agilent Technologies, Inc. | Phase-diverse coherent optical spectrum analyzer |
CN105214950A (zh) * | 2015-10-14 | 2016-01-06 | 重庆百恒农业发展有限公司 | 种子重力精选机 |
CN115228546A (zh) * | 2022-07-29 | 2022-10-25 | 浙江省磐安外贸药业股份有限公司 | 一种孢子粉的破壁设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468426A2 (de) * | 1990-07-23 | 1992-01-29 | Kubota Corporation | Sichter für pulverförmige Materialien |
DE4416757A1 (de) * | 1994-05-13 | 1995-11-16 | Zeppelin Schuettguttech Gmbh | Umlenk-Gegenstrom-Sichter |
DE19740013C1 (de) * | 1997-09-11 | 1999-06-24 | Waeschle Gmbh | Schüttgutsichter |
US6206202B1 (en) * | 1996-03-04 | 2001-03-27 | Hosokawa Mikropul Gesellschaft Fur Mahl-Und Staubtechnik Mbh | Cyclone separator |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29723793U1 (de) * | 1997-09-11 | 1999-02-25 | Waeschle Gmbh | Schüttgutsichter |
-
2004
- 2004-04-23 DE DE200410020379 patent/DE102004020379A1/de not_active Withdrawn
-
2005
- 2005-03-22 EP EP20050006195 patent/EP1591171B1/de active Active
- 2005-03-22 DE DE200550000680 patent/DE502005000680D1/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0468426A2 (de) * | 1990-07-23 | 1992-01-29 | Kubota Corporation | Sichter für pulverförmige Materialien |
DE4416757A1 (de) * | 1994-05-13 | 1995-11-16 | Zeppelin Schuettguttech Gmbh | Umlenk-Gegenstrom-Sichter |
US6206202B1 (en) * | 1996-03-04 | 2001-03-27 | Hosokawa Mikropul Gesellschaft Fur Mahl-Und Staubtechnik Mbh | Cyclone separator |
DE19740013C1 (de) * | 1997-09-11 | 1999-06-24 | Waeschle Gmbh | Schüttgutsichter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7068374B2 (en) | 2003-06-09 | 2006-06-27 | Agilent Technologies, Inc. | Phase-diverse coherent optical spectrum analyzer |
CN105214950A (zh) * | 2015-10-14 | 2016-01-06 | 重庆百恒农业发展有限公司 | 种子重力精选机 |
CN115228546A (zh) * | 2022-07-29 | 2022-10-25 | 浙江省磐安外贸药业股份有限公司 | 一种孢子粉的破壁设备 |
Also Published As
Publication number | Publication date |
---|---|
DE102004020379A1 (de) | 2005-11-10 |
EP1591171B1 (de) | 2007-05-09 |
DE502005000680D1 (de) | 2007-06-21 |
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