EP0641609B1 - Windsichter - Google Patents
Windsichter Download PDFInfo
- Publication number
- EP0641609B1 EP0641609B1 EP94113724A EP94113724A EP0641609B1 EP 0641609 B1 EP0641609 B1 EP 0641609B1 EP 94113724 A EP94113724 A EP 94113724A EP 94113724 A EP94113724 A EP 94113724A EP 0641609 B1 EP0641609 B1 EP 0641609B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- inlet
- guide vanes
- casing
- vanes
- 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
Links
- 239000000463 material Substances 0.000 claims description 31
- 230000000007 visual effect Effects 0.000 description 10
- 238000000926 separation method Methods 0.000 description 8
- 241000237858 Gastropoda Species 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition 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
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
-
- 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
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
Definitions
- the present invention is based on an air classifier with features such as windsifters according to WO 93/09883 by the same applicant and DE-OS 2426 295.
- this classifier housing has a tangential air inlet and one to the Visual air inlet parallel visual material inlet and a axial fine material outlet.
- the fines outlet is radial upstream flow through the sight wheel, from which the fine air mixed with fine material emerges axially and through the classifier outlet from the classifier housing led out and fed to a filter, for example becomes.
- the coarse material After the tangential entry into the classifier housing rotates the visible material around the axis of the classifying wheel a spiral, the coarse material reaches the radially outside lying area of the spiral flow, is from the mixture separated from visible air and fines and passes through a coarse material outlet from the classifier housing.
- the visual air reaches the tangential one Entry into the classifier housing first into the flow channels a guide vane ring with adjustable blades, before mixing with the visible material.
- the two guide vane rings are by one completely different tasks completely different.
- the blade ring is the actual means of sighting, i.e. the raw gas flow is broken down in the blade ring, of the "visible goods", in the proportion of fine goods on the one hand and in the coarse part on the other hand.
- the sight wheel is so far only an additional component from the Consideration that when sighting alone in the blade ring the fine material may be contaminated by pointed grains, after collision with other grains or Bounce off the coarse material discharge.
- the classifying wheel this should be pointed grains at the entrance to the fines discharge prevent why the classifying wheel at a separation limit is operated above the coarsest, with the Spiral air classifier, i.e. the fixed blade ring adjustable separation limit.
- an additional rotating blade ring The component is a special function in the form of capturing spray grain is in the second
- An additional air classifier is installed in the stationary guide vane ring Component with a special function, which consists in that the sight air on the entire circumference of the sight wheel the same conditions as possible, which is why the Shoveling the stationary vane ring in this way trained, arranged and adjustable that by Adjustment of the blades of the stationary guide vane ring in the annular space between the guide vane ring and classifying wheel a spiral wind sighting can be achieved, the one coarser separating grain than that on the outer edges conditions of the blades of the classifying wheel corresponds.
- Catching the spray grain in one is a change in the malfunction conditions at the entrance of the blade channels of the classifying wheel in the other Case opposite.
- both of the aforementioned air classifiers are distinguished by a different one Training of the coarse material discharge.
- a peeling of a radially outer one with Coarse material enriched visual air content with a cutting edge in the case of the classifier according to DE-OS 2426295, however the coarse material discharge with one downstream of the cutting edge Snail causes, in the case of the classifier according to the WO 93/09883, however, with a purposefully arranged Baffle. Baffle. And especially snail additional components that are not only higher costs and additional weight, but also wear are exposed. Recognizing this fact the task of the present invention is one Air classifier with features according to the one dealt with above State of the art and according to the generic term of Form Claim 1 so that for the discharge of the coarse material neither a guide plate nor a screw is required is.
- the claim 2 contains features with which the invention is more expedient Way can be trained.
- an air classifier according to WO 93/09883 is taken as a basis, in which a classifying wheel is actual
- the sight is a guide vane ring and the sight wheel upstream, which ensures that on the whole Extent of the sight wheel for the sight air equal inflow conditions present;
- the blades of the classifying wheel should be arranged and designed in such a way that by adjusting the vanes of the vane ring in the annulus between the vane ring and as a classifying wheel effective paddlewheel effect a spiral wind sighting leaves, which provides a coarser separation grain than it on the outer edges of the paddle wheel, which acts as a classifying wheel prevailing conditions.
- Such a classifier is for the invention preferably a training course, but it can be Sifter training according to DE-OS 2426295 also used as a basis become a fixed one with the actual visual element Guide vane ring and this is ultimately a classifying wheel is downstream, in order to capture spray grain, the paddle wheel sifter that is operated at a separation limit which is above the coarsest, adjustable with the spiral wind sifter Separation limit is.
- the viewing chamber 9 is enclosed by a stationary one Guide vane ring 11.
- the guide vanes 12 of the guide vane ring 11 are individually about their respective longitudinal axes 13 adjustable.
- the guide vane ring 11 forms one Part of a concentric to the classifier axis 6 Circle.
- the blades 15 In the viewing chamber enclosed by the guide vane ring 11 9, again concentric to the classifier axis 6 arranged rotating sight wheel 14 known per se, the blades 15.
- the annulus between the Outer circle of the classifying wheel 14 and the inner circle of the Guide vane ring 11 is relatively narrow because in it no sighting should take place.
- the width of the annulus between the sight wheel and the vane ring is only chosen as is with respect to an orderly transition of the raw material from visible material and visible air, the latter from the guide vane ring, required in the classifying wheel is.
- the viewing material inlet 3 opens tangentially into the viewing chamber 9 in the area of the annular space between the guide vane ring 11 and the classifying wheel 14.
- the classifying air inlet 5 opens out tangentially into the annular space 17 between the guide vane ring 11 and the spiral in the illustration of FIG. 1 Casing.
- Visual goods inlet 3 and visual air inlet 5 are tubes arranged parallel to each other.
- the coarse material discharge is a tube which in the illustration of FIG.
- the classifying air flows between the flow channels the guide vanes 12 of the guide vane ring 11 from outside inside.
- the guide vanes 12 lie on one given by the housing screw contour and are in Housing 1 rotatably mounted so that both the inflow angle of the sight gas as well as the gap width flowed through can be varied between the blades 12.
- the Visible material is on the inside of the guide vanes 12 of the vane ring 11 abandoned and at the columns through which the sight gas flows intensely. Because of the Blade position and shape caused prevailing Flow conditions arise in the flow channels between the blades of the vane ring 1 Vortex formation, which is the setting of visible material prevented the guide vanes and finally provides a spatial spiral or Screw flow.
- the concentric arranged in the viewing space 9 14 with the blades 15 are the same physical Connections, here are the radial and peripheral speeds but not from the gas flow and Blade position influenced, but by the gas flow and the speed of the sight wheel 14. So that the sight wheel 14 is predominantly determining the fineness, the separation limit coarser in the annular space than on the classifying wheel 14 set.
- the outer guide vane ring 11 serves at most one relatively low caution, but above all the intensive dispersion and deagglomeration of the Visible good. The actual sighting is done with good Efficiency in classifying wheel.
- the fine material finally leaves the classifier via the Fine material outlet 7 of the classifying wheel 14; Grit, which revolves near the guide vane ring 11 is preferred discharged from the viewing area via the coarse discharge 8.
- Grit which revolves near the guide vane ring 11 is preferred discharged from the viewing area via the coarse discharge 8.
- the guide vanes 12 of the outer, static guide vane ring 11 are set so that the flow angle of the guide vanes 12 and the cross sections of the guide vane channels between the vanes in the annular Visible space 9 between the guide vane ring 11 and the Paddle vision wheel 14 result in a spiral wind sighting, which provides a coarser grain of separation than the other Conditions prevailing outside edge of the bucket visible wheel corresponds.
- the operation of the classifier on the visible material acting forces are indicated by arrows in FIG. 1.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Cyclones (AREA)
- Screw Conveyors (AREA)
Description
- Figur 1
- einen vertikalen Mittellängsschnitt durch einen erfindungsgemäß ausgebildeten und arbeitenden Windsichter, der in dieser Darstellung dem Windsichter gemäß WO 93/09883 gleicht und
- Figur 2
- eine Ansicht auf das Sichtergehäuse in Richtung des Pfeiles A in Figur 1 sowie
- Figur 3
- einen Schnitt nach der Linie III - III in Figur 1,
Claims (2)
- Windsichter mit einem feststehenden, in Achsrichtung gesehen eine Spirale bildenden Gehäuse, einem in dem Gehäuse ortsfest angeordneten Leitschaufelkranz mit einstellbaren Schaufeln und einem zum Schaufelkranz achsgleich innerhalb des Leitschaufelkranzes angeordneten um die Gehäuseachse drehenden, beschaufelten Sichtrad sowie einem tangential in den Ringraum zwischen Sichtrad und Leitschaufelkranz mündenden Rohgaseinlaß und einem parallel zu diesem gerichteten, in den Ringraum zwischen Leitschaufelkranz und Spiralgehäuse mündenden Sichtgaseinlaß sowie schließlich einem Grobgutaustrag im Endbereich der Strömung im Ringraum zwischen Leitschaufelkranz und Sichtrad, dadurch gekennzeichnet, daß der Grobgutauslaß (8) in Achsrichtung des Spiralgehäuses gegenüber Sichtgaseinlaß (5) und Sichtguteinlaß (3) versetzt angeordnet ist und das Spiralgehäuse hierdurch die Raumform einer Schnecke mit zumindest einer vollen Schneckenwindung hat.
- Windsichter nach Anspruch 1, dadurch gekennzeichnet, daß das Sichtrad (7) der ebenfalls schneckenförmige feststehende Leitschaufelkranz derart einander zugeordnet sind, daß die Schaufeln des Sichtrades sowohl im Einlaßbereich als auch im Auslaßbereich des Sichtergehäuses die Schaufeln des Leitschaufelkranzes möglichst weitgehend überdecken.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4329706 | 1993-09-02 | ||
DE4329706A DE4329706A1 (de) | 1993-09-02 | 1993-09-02 | Windsichter |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0641609A2 EP0641609A2 (de) | 1995-03-08 |
EP0641609A3 EP0641609A3 (de) | 1995-08-30 |
EP0641609B1 true EP0641609B1 (de) | 1998-12-02 |
Family
ID=6496713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94113724A Expired - Lifetime EP0641609B1 (de) | 1993-09-02 | 1994-09-01 | Windsichter |
Country Status (5)
Country | Link |
---|---|
US (1) | US5489320A (de) |
EP (1) | EP0641609B1 (de) |
JP (1) | JP3628357B2 (de) |
DE (2) | DE4329706A1 (de) |
ES (1) | ES2126030T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007013029A1 (de) | 2007-03-19 | 2008-09-25 | Roland Dr. Nied | Windsichter-Betriebsverfahren und Windsichter |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6140451A (en) * | 1997-10-17 | 2000-10-31 | Shin-Etsu Chemical Co., Ltd. | Surface treating compositions |
DE10044104C2 (de) * | 2000-09-07 | 2003-04-10 | Roland Nied | Windsichter |
US8480876B2 (en) * | 2007-12-26 | 2013-07-09 | Theodore R. Beck | Aluminum production cell |
CN110560356B (zh) * | 2019-09-17 | 2021-08-10 | 安徽隆跃农业发展有限公司 | 一种农业种子多级筛分装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2591408A (en) * | 1949-09-03 | 1952-04-01 | Gen Electric | Self-ventilated dynamoelectric machine having an air cleaner |
US2738855A (en) * | 1953-04-28 | 1956-03-20 | Fallon John | Apparatus for separating dust from gases |
US2989146A (en) * | 1958-06-27 | 1961-06-20 | Claude B Schneible Co | Separating apparatus |
ES306036A1 (es) * | 1963-12-05 | 1965-03-01 | Polysius Gmbh | Mejoras en la construccion de separadores de fuerza centrifuga. |
US3406504A (en) * | 1966-12-13 | 1968-10-22 | American Air Filter Co | Combined gas moving and gas cleaning apparatus |
DE3826463C2 (de) * | 1988-08-04 | 1995-10-26 | Heinz Jaeger | Windsichter |
DE4137633A1 (de) * | 1991-11-15 | 1993-05-19 | Nied Roland | Windsichter und verfahren zum betrieb eines windsichters |
-
1993
- 1993-09-02 DE DE4329706A patent/DE4329706A1/de not_active Withdrawn
-
1994
- 1994-08-25 US US08/296,254 patent/US5489320A/en not_active Expired - Lifetime
- 1994-09-01 DE DE59407372T patent/DE59407372D1/de not_active Expired - Lifetime
- 1994-09-01 EP EP94113724A patent/EP0641609B1/de not_active Expired - Lifetime
- 1994-09-01 ES ES94113724T patent/ES2126030T3/es not_active Expired - Lifetime
- 1994-09-02 JP JP20985694A patent/JP3628357B2/ja not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007013029A1 (de) | 2007-03-19 | 2008-09-25 | Roland Dr. Nied | Windsichter-Betriebsverfahren und Windsichter |
Also Published As
Publication number | Publication date |
---|---|
US5489320A (en) | 1996-02-06 |
JPH07155699A (ja) | 1995-06-20 |
EP0641609A3 (de) | 1995-08-30 |
DE59407372D1 (de) | 1999-01-14 |
DE4329706A1 (de) | 1995-03-09 |
EP0641609A2 (de) | 1995-03-08 |
ES2126030T3 (es) | 1999-03-16 |
JP3628357B2 (ja) | 2005-03-09 |
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