EP1418258A1 - Festkörperausscheider für Fasermaterial - Google Patents
Festkörperausscheider für Fasermaterial Download PDFInfo
- Publication number
- EP1418258A1 EP1418258A1 EP03016366A EP03016366A EP1418258A1 EP 1418258 A1 EP1418258 A1 EP 1418258A1 EP 03016366 A EP03016366 A EP 03016366A EP 03016366 A EP03016366 A EP 03016366A EP 1418258 A1 EP1418258 A1 EP 1418258A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- excretion
- air
- cross
- speed
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
- D01G31/003—Detection and removal of impurities
Definitions
- the invention relates to a solid-state separator for separating solid bodies such as heavy parts made of metal, stone, wood, plastic, rubber etc. as well as ropes and cords and contaminants such as stems, shell remains, leaf parts or the like Cotton fiber flakes, which are transported pneumatically with an air stream.
- Cotton is a natural product, which after the harvest and the subsequent one Removal of the seeds pressed into bales is delivered to spinning mills. Especially During these first process steps, impurities in the form of Foreign bodies (solid bodies) such as heavy parts made of metal, stone, wood, plastic, rubber etc. as well as ropes and cords get into the cotton. Even impurities like Stems, shell remains, leaf parts or the like are solids that act as pollution are to be seen. These solids both pose a risk of damage to the Spinning machines, as well as loss of quality of the end product. The Early removal of these contaminants is an important task in the blow room.
- EP 987354 (Marzoli) describes a device for removing dirt particles, which is built directly into a horizontal part of the pneumatic transport line. This device contains rods that are held in the fiber stream and fibers and direct polluting particles to the lower area of the channel. At the bottom A rust deflection meter is directed against the current after the rust. This Messer separates the fiber flow into two parts. The upper one contains the guts fibers and goes further in the transport channel, while the lower stream is separated into a waste container is directed. The knife causes an S-shaped deflection, and that Soiling is thrown out of the fiber flakes by centrifugal force. The disadvantage of the knife is that this increases the number of nits in the Cotton causes and thus negatively affects the quality of the end product. In addition, this system is not suitable for a very high material flow, what would lead to an increase in the gut fibers in the excreted material.
- a generally known device is a deflection of the fiber stream by 90 °, where in the second half of the deflection curve an opening with a Excretion container is attached. After the deflection, suction takes place. light Particles can be easily redirected by suction because heavy particles cause them due to their mass and volume, they tend to continue flying in the original direction and land in the container. When increasing the speed and loading of the Fluff flow is no longer the excretion principle described above can be used effectively. Especially if the force of the fiber flake flow is greater than the force needed to separate individual parts cannot do this principle work more. The fiber flake stream makes the parts to be eliminated simple get carried away before they leave.
- the object of the invention is to transport solids from a pneumatically transported Eliminate fiber floc flow taking into account the high volume flow.
- the solution according to the invention is an apparatus and a method for a to achieve improved separation of guts fibers and solids, the Air flow rate is reduced so that the solids have time effectively excrete.
- the fiber flakes and the soiling solids, as described above, are pneumatically with the help of an air flow in round channels between the different Processing points transported in the blow room.
- fans are at regular intervals built in, which can either suck or blow.
- the excretion channel is preferably a channel with a rectangular cross section and has a length I, a width b and a height h.
- the height will drop out of the equation. This means that the excretion surface Ib is decisive, together with the volume of the air-fiber flake flow q v , for the smallest particle that can still be excreted.
- a device preferably consists of a feed channel which is enlarged in cross-section so that the volume of the air-fiber flake flow q v decreases and merges into an excretion channel with a rectangular cross-section which runs above an excretion container and an extraction channel which is reduced in cross-section, until the cross section that is normally provided for the transport duct and a fan are arranged downstream.
- the normal transport speed is the speed that is normally in a spinning mill is used. It depends on the construction of the transport channel, on Diameter of the used pipes and the size and quantity of the fans that are installed. The normal transport speed can then also between different spinning mills vary. The normal can continue Transport speed also fluctuate during the process, for example because of irregular loading of the air flow with fiber flakes.
- a solution according to the invention provides that the air-fiber flake flow after the Cross-section change of at most 80%, preferably at most 70% or 50% or with 35% or with 25% or with 15% of the normal transport speed Excretion channel enters.
- the reduction of the transport speed of the air-fiber flake flow depends on the degree of excretion that is desired. If relatively small particles still have to be excreted is a greater reduction necessary, while with coarse particles a smaller reduction in speed will already deliver an effective result. However, this reduction also has an impact on the amount of good fibers - i.e. desired fiber material - in the Excretion. A setting balance should then also be new for each application to be reconsidered.
- the reduction options also depend on the selected length of the channel together
- the maximum reduction in transport speed is from the density and the Shape of the fiber flakes dependent; these still have to remain in limbo for them can be transported safely. With coarse flakes - immediately after the bale opener - the necessary, minimum transport speed is greater than after all Cleaning steps where the fiber flakes are mostly more dissolved and some loose fibers are also carried in the air-fiber flake stream.
- the length of the excretion channel is preferably adjustable so that the Degree of excretion can be adjusted; as a result, this is according to the invention Device can be used at various locations in the blow room. For example, right away after the bale opener, the device can be used to remove solids such as Example heavy parts made of metal, stone, wood, plastic, rubber etc. as well as ropes and Remove cords from the air-fiber flake stream.
- the inventive Device can also be used just before the card, above all Vegetable solids such as seed husks to remove the fiber flakes are then already more dissolved, and such types of vegetable solids are during the various treatment processes. The length of the device can then be adjusted so that more fine particles are still excreted become.
- the length / width ratio of the excretion channel has an additional influence on the Flow conditions in the excretion channel. The flow should pass through evenly flow the canal and eddies should be avoided as much as possible; these would have a negative effect on the excretion of the solid and / or have a possible, increased excretion of gut fibers.
- FIG. 2 shows a schematic representation of a device according to the invention.
- the fiber flock stream is delivered via feed channel 1, which is connected to the pneumatic transport line (not shown further) which connects various blowroom machines to one another.
- the feed channel is preferably enlarged in cross section to achieve a decrease in speed and has a transition from a round to a rectangular cross section.
- the fiber flock flow is deflected into the deflection channel 5.
- the fiber flock flow flows parallel to the grate 2 through the excretion channel 6.
- the fiber flock flow is transported away via the discharge channel 3, where the fiber flock flow is accelerated again to normal speed, in some cases by the suction capacity of the fan, partly because the cross-section of the duct is re-adjusted to the duct that is normally used.
- the speed of the fiber flock flow can preferably be reduced even further by means of an adjustable wedge 14. This allows the exact air flow conditions be optimized.
- Solids are carried in the fiber flake stream. With a decrease in The speed in the feed channel (1) becomes the solids to be separated, depending on their density and volume, their speed will be less rapid adjust that of the fiber flake flow. In the diversion channel comes in addition a centrifugal force that causes the solids to move outwards and inwards horizontal part are thrown down. The solids are heading in the direction thrown out of the grate, where they fall through directly or at the latest at the Opening after the rust.
- the separated material is stored in a closed waste container (8) collected.
- This container can be cleaned by hand at regular intervals become.
- a tub with a closable flap (4) is preferably attached, which separates the container from the upper part to a collapse of the To prevent air conditions in the entire pneumatic channel. Also through the Slider prevents the excreted material from being sucked in again. By the tub can also be cleaned during production.
- a lock roller can also be installed in the container or an intermittent one Extraction system taking into account the air balance of the entire pneumatic System.
- Figure 3 shows the deflection channel in more detail.
- the solids would obtain the highest centrifugal force when the deflection angle ⁇ is 180 ° would.
- the disadvantage would be an increased resistance in the channel, which is a higher would require promotional energy.
- the deflection angle ⁇ is preferably between 70 ° and 120 °, especially 90 °.
- the wall of the diversion channel could be formed from a round bent sheet; is preferably the redirection not shaped as a curve, but gradually charted. This makes the Deflection channel not as a smooth slide.
- the solids become handled and especially lose strength parallel to that of the Is flake flow and the vertical force (equal to the direction of gravity) gets more meaning. Due to the gradual folding, the Balls of flakes also slightly dissolved.
- FIG. 4 shows the excretion channel in greater detail.
- One of the tasks of the Rust is the retention of the fiber flakes. Because the speed is considerable is reduced, a parallel current forms in the excretion channel; This creates a kind of air cushion on the surface of the grate bars, which has a positive effect on the Retain the fiber flakes in the passing airflow. This air flow and the The upholstery is so small that the vertically accelerated solid body through the Rust can be excreted.
- the width of the grate bars (2) and the Recesses between the grate bars are chosen so that a sufficient Elimination of the solid takes place without a lot of fiber flakes are also eliminated.
- the grate could preferably be arranged at a slight angle (see FIG. 6a), in particular at an angle of approximately + 5 ° to approximately -5 °, depending on the degree of pollution and the type of pollution.
- the shape of the grate bars could also be chosen so that the recesses between the bars in the direction of flow, such as in Figure 5a shown.
- the grate bars can be made from bent sheet metal or from one massive piece of metal can be produced. The distance between the bars should be but be so small that no fiber flock flow can occur under the grate bars.
- Figure 5b shows a preview of examples of the profile of the rod. Is an advantage a shape that maintains the above air cushion, but at the same time the released particles and thereby a possible blockage of the Prevents rust.
- a sheet metal preferably has a U-shape or a U-shape Edges, both of which are slightly curved inwards, creating an open triangle.
- the impact plate (10) can consist of several components: the guide side 11, the conducts the fiber flock flow into the extraction duct, the discharge side 12, - solid bounce on this side and are directed into the excretion container, - and the Teeing edge (13).
- the guide side 11 the conducts the fiber flock flow into the extraction duct
- the discharge side 12 - solid bounce on this side and are directed into the excretion container
- the Teeing edge (13) the Teeing edge (13).
- Figure 6 a to c various examples are shown, such as Impact plate can look like.
- the angle between the leading side and the tee side can be varied, preferably at an angle of at most 90 °, in particular between 90 ° and 70 ° (see schematic example in Figure 6c). This will make the bouncing Solid body is directed downwards, and this is prevented by the suction of the drainage canal.
- a one-piece profile can also be used become.
- An alternative solution according to the invention would be a tee-off page an elastic material so that the impact is dampened and the solids can't get a boost.
- a too sharp tee can work as a knife and the number increase unwanted nits in the cotton flakes.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
Description
Eine Ausscheidung findet gerade noch statt, wenn tv = tb, oder wenn h/v = (l.b.h)/ qv. Die Höhe wird aus der Gleichung herausfallen. Das wird heissen, dass die Ausscheidungsoberfläche I.b massgebend ist, zusammen mit dem Volumen des Luft-Faserflockenstroms qv, für das kleinste Teilchen, das noch ausgeschieden werden kann.
- Figur 2:
- Schematische Darstellung einer erfindungsgemässen Lösung
- Figur 3:
- Detailzeichnung des Umlenkungskanals
- Figur 4:
- Schematische Darstellung des Querschnitts in Figur 1, angegeben mit A-B in Pfeilrichtung
- Figur 5a und b:
- Beispiele von alternativen Roststabformen, 2a in Längsrichtung und 2b im Querschnitt
- Figur 6 a bis c:
- Beispiele von möglichen Varianten des Aufprallblechs
Der Faserflockenstrom wird via Zuführkanal 1 angeliefert, welcher an die pneumatische Transportlinie angeschlossen ist (nicht weiter gezeigt), die verschiedene Putzereimaschinen miteinander verbindet. Der Zuführkanal wird vorzugsweise im Querschnitt vergrössert, um eine Abnahme der Geschwindigkeit zu erreichen, und hat einen Übergang von einem runden zu einem rechteckigen Querschnitt. Am Ende des Zuführkanals wird der Faserflockenstrom in den Umlenkungskanal 5 umgelenkt. Dadurch fliesst der Faserflockenstrom parallel zum Rost 2 durch den Ausscheidungskanal 6. Angesaugt von einem Ventilator, der in der pneumatischen Linie nach dem Festkörperausscheider angeordnet ist, wird der Faserflockenstrom über den Abzugkanal 3 abtransportiert, wo der Faserflockenstrom wieder auf die normale Geschwindigkeit beschleunigt wird, teils durch die Ansaugkapazität des Ventilators, teils, weil der Querschnitt des Kanals wieder an den Kanal angepasst wird, der normalerweise benutzt wird.
Claims (20)
- Vorrichtung für die Ausscheidung von Festkörpern aus einem Luft-Faserflockenstrom mit mindestens einem Zuführkanal, einem nachfolgenden, horizontal verlaufenden Ausscheidungskanal, einem Ausscheidungsbehälter, der unterhalb des Ausscheidungskanals angeordnet ist und einen offenen, gemeinsamen Bereich mit diesem aufweist und einem Abzugkanal, dem ein Ventilator nachgeordnet ist, dadurch gekennzeichnet, dass der Querschnitt des Zuführkanals vor dem Ausscheidungskanal zunimmt, so dass die Geschwindigkeit des Luft-Faserflockenstroms abnimmt.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Querschnitt des Abzugkanals abnimmt, bis dessen Querschnitt einem nachfolgenden Transportkanal entspricht, so dass die Transportgeschwindigkeit direkt nach dem Ausscheidungskanal wieder beschleunigt wird.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Zuführkanal vertikal angeordnet ist und ein Umlenkungskanal zwischen dem Zuführkanal und dem Ausscheidungskanal angeordnet ist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Umlenkungskanal eine Umlenkung des Luft-Faserflockenstroms in einem Winkel von 70° bis 120°, vorzugsweise 90°, verursacht.
- Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Ausscheidungskanal und der Ausscheidungsbehälter durch einen Rost getrennt sind, der auf Höhe des Bodens des Zuführkanals oder des Umlenkungskanals angeordnet ist.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Rost aus Roststäben gebildet ist, die parallel zum Faserflockenstrom liegen.
- Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Roststäbe in Richtung des Abzugkanals schmäler werden.
- Vorrichtung nach Anspruch 5, 6 oder 7, dadurch gekennzeichnet, dass zwischen den Enden der Roststäbe und dem Eingang des Abzugkanals eine Öffnung vorgesehen ist.
- Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass am Eingang des Abzugkanals ein Aufprallblech angeordnet ist.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass der Winkel zwischen Abschlagseite und Leitseite des Aufprallblechs höchstens 90° beträgt, vorzugsweise zwischen 90° und 70°.
- Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass das Aufprallblech aus einem Stück gebildet ist.
- Vorrichtung nach Anspruch 9, 10 oder 11, dadurch gekennzeichnet, dass das Aufprallblech ganz oder teilweise aus einem elastischen Material hergestellt wird.
- Vorrichtung nach Anspruch 9 bis 12, dadurch gekennzeichnet, dass die Distanz zwischen den Enden der Roststäbe und dem Aufprallblech einstellbar ist.
- Vorrichtung nach Anspruch 9 bis 13, dadurch gekennzeichnet, dass die Abschlagkante des Aufprallblechs auf gleicher Höhe mit der oberen Kante der Roststäbe angeordnet ist.
- Vorrichtung nach Anspruch 9 bis 14, dadurch gekennzeichnet, dass die Abschlagkante etwas oberhalb der Höhe der oberen Kante der Roststäbe angeordnet ist.
- Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Ausscheidungsbehälter und der Ausscheidungskanal mittels einer verschliessbaren Klappe voneinander trennbar sind.
- Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Querschnitt des Ausscheidungskanals rechteckig ist.
- Vorrichtung nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Zunahme des Querschnitts des Zuführkanals genügend ist, damit die Geschwindigkeit des Luft-Faserflockenstroms nach der Querschnittänderung und spätestens bei Eintritt in den Ausscheidungskanal noch höchstens 80 % oder vorzugsweise 70% oder vorzugsweise 50% oder vorzugsweise 25% oder vorzugsweise 15% der normalen Transportgeschwindigkeit beträgt.
- Verfahren für die Ausscheidung von Festkörpern aus einem Luft-Faserflockenstrom, dadurch gekennzeichnet, dass die Geschwindigkeit des Luft-Faserflockenstroms so weit verringert wird, dass die Festkörper mit Hilfe der Schwerkraft ausgeschieden werden können.
- Verfahren nach Anspruch 19, dadurch gekennzeichnet, dass die Geschwindigkeit des Luft-Faserflockenstroms nach der Querschnittänderung und spätestens bei Eintritt in den Ausscheidungskanal noch höchstens 80 % oder vorzugsweise 70% oder vorzugsweise 50% oder vorzugsweise 25% oder vorzugsweise 15% der normalen Transportgeschwindigkeit beträgt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH18772002 | 2002-11-08 | ||
CH18772002 | 2002-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1418258A1 true EP1418258A1 (de) | 2004-05-12 |
Family
ID=32097408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03016366A Withdrawn EP1418258A1 (de) | 2002-11-08 | 2003-07-19 | Festkörperausscheider für Fasermaterial |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1418258A1 (de) |
CN (1) | CN1313218C (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008144944A1 (de) * | 2007-05-25 | 2008-12-04 | Maschinenfabrik Rieter Ag | Vorrichtung zur ausscheidung von feststoffen aus einem luft-faserflocken-strom |
CN101879506A (zh) * | 2010-06-09 | 2010-11-10 | 清华大学 | 一种惯性弯头粉体浓淡分离装置 |
EP3323916A1 (de) * | 2016-11-16 | 2018-05-23 | Maschinenfabrik Rieter AG | Schwerteilabscheider |
Families Citing this family (5)
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CN104353610A (zh) * | 2014-10-25 | 2015-02-18 | 全椒县新宇棉制品有限公司 | 一种重杂物分离装置 |
CN107006219A (zh) * | 2017-05-15 | 2017-08-04 | 农业部南京农业机械化研究所 | 一种切线导流式气棉分离装置 |
CN108325846A (zh) * | 2018-05-18 | 2018-07-27 | 上海正丝农业科技有限公司 | 碎木片木粉去除金属颗粒以及杂质装置 |
CN108906617A (zh) * | 2018-09-25 | 2018-11-30 | 南通联源机电科技股份有限公司 | 一种冲击式复合分选机 |
CN110592740A (zh) * | 2019-10-09 | 2019-12-20 | 安徽华茂纺织股份有限公司 | 清花输棉管道排杂装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US669182A (en) * | 1900-07-05 | 1901-03-05 | Richard J Reynolds | Apparatus for elevating and cleaning seed-cotton. |
US2668330A (en) * | 1952-02-25 | 1954-02-09 | Hugh L Gieszl | Cleaner for mechanical cotton pickers |
US3956106A (en) * | 1973-03-19 | 1976-05-11 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Apparatus and process for the production of grit free finely dispersed pigments |
US4502195A (en) * | 1980-11-13 | 1985-03-05 | Phillips Petroleum Company | Method for separating particulate materials from fibrous materials during start-up of texturizing process |
US4853112A (en) * | 1988-07-25 | 1989-08-01 | Victor Brown | Low velocity air classifier |
EP0400262A2 (de) * | 1989-06-01 | 1990-12-05 | FRATELLI MARZOLI & C. S.p.A. | Schmutzabscheider für Baumwollfaserreinigung |
US5366093A (en) * | 1993-09-10 | 1994-11-22 | Reynolds Metals Company | Apparatus for separating particulate materials |
-
2003
- 2003-07-19 EP EP03016366A patent/EP1418258A1/de not_active Withdrawn
- 2003-11-07 CN CNB2003101148243A patent/CN1313218C/zh not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US669182A (en) * | 1900-07-05 | 1901-03-05 | Richard J Reynolds | Apparatus for elevating and cleaning seed-cotton. |
US2668330A (en) * | 1952-02-25 | 1954-02-09 | Hugh L Gieszl | Cleaner for mechanical cotton pickers |
US3956106A (en) * | 1973-03-19 | 1976-05-11 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler | Apparatus and process for the production of grit free finely dispersed pigments |
US4502195A (en) * | 1980-11-13 | 1985-03-05 | Phillips Petroleum Company | Method for separating particulate materials from fibrous materials during start-up of texturizing process |
US4853112A (en) * | 1988-07-25 | 1989-08-01 | Victor Brown | Low velocity air classifier |
EP0400262A2 (de) * | 1989-06-01 | 1990-12-05 | FRATELLI MARZOLI & C. S.p.A. | Schmutzabscheider für Baumwollfaserreinigung |
US5366093A (en) * | 1993-09-10 | 1994-11-22 | Reynolds Metals Company | Apparatus for separating particulate materials |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008144944A1 (de) * | 2007-05-25 | 2008-12-04 | Maschinenfabrik Rieter Ag | Vorrichtung zur ausscheidung von feststoffen aus einem luft-faserflocken-strom |
CN101879506A (zh) * | 2010-06-09 | 2010-11-10 | 清华大学 | 一种惯性弯头粉体浓淡分离装置 |
CN101879506B (zh) * | 2010-06-09 | 2012-10-10 | 清华大学 | 一种惯性弯头粉体浓淡分离装置 |
EP3323916A1 (de) * | 2016-11-16 | 2018-05-23 | Maschinenfabrik Rieter AG | Schwerteilabscheider |
Also Published As
Publication number | Publication date |
---|---|
CN1498697A (zh) | 2004-05-26 |
CN1313218C (zh) | 2007-05-02 |
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