US3865439A - Apparatus for depositing fiber flock in a chute - Google Patents

Apparatus for depositing fiber flock in a chute Download PDF

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Publication number
US3865439A
US3865439A US31986972A US3865439A US 3865439 A US3865439 A US 3865439A US 31986972 A US31986972 A US 31986972A US 3865439 A US3865439 A US 3865439A
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US
United States
Prior art keywords
chute
air stream
set forth
flock
deflecting means
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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
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English (en)
Inventor
Robert Moser
Paul Staheli
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
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Publication of US3865439A publication Critical patent/US3865439A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/08—Air draught or like pneumatic arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/60—Devices for separating the materials from propellant gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
    • Y10T137/218—Means to regulate or vary operation of device
    • Y10T137/2202—By movable element
    • Y10T137/2218—Means [e.g., valve] in control input

Definitions

  • ABSTRACT An air stream deflecting means is positioned near the entrance to the depositing chute so as to regulate the depositing of the flock across the width of the chute to obtain a uniform deposit. Sensors are positioned in the chute at various horizontally spaced points in a common plane to sense the height of the accumulated flock in the chute and to activate the deflecting means in accordance with the height variations of the deposited flock so as to obtain a smooth even surface.
  • This invention relates to an apparatus for depositing fiber flock in a chute. More particularly, this invention relates to an apparatus for depositing fiber flock in a chute from a flock-laden transporting air stream.
  • spinning mills have been known to employ pneumatic systems to transport opened fiber flocks from one point to another.
  • spinning mills use such devices, particularly for feeding cards and cleaning machines, in order to separate the fiber flocks, which have been opened by mechanical bale openers or pluckers or by blending bale breakers and pneumatically transported to one or a plurality of machines via transporting air stream ducts, from the transporting air stream before the flocks enter a machine.
  • a'constant sliver weight e.g., of the weight of a sliver delivered by a card
  • uniformity of the card feed, and thus uniformity of the flock layer fed, as known are of utmost importance.
  • the invention provides an apparatus for separating opened fiber flocks from a fiber-flock-laden transporting air stream into a depositing chute connected to a pneumatic transporting duct so as to achieve an even distribution of fiber across the width of the chute.
  • the apparatus includes an adjustable de fleeting means between the portion of the chute connected to the transporting duct and a flock deposit position in the chute.
  • This deflecting means is actuated pneumatically and/or mechanically to deflect the transporting air stream in the direction across the width of the chute.
  • the chute can be provided with means, such as perforations, for draining the air and retaining the deposited fiber flocks.
  • the deflecting means is positioned in the head so as to deflect the incoming air stream more or less into one or the other of the entry openings.
  • suitable sensing means are positioned in the chute body to sense the characteristics of the deposited fiber column at various points. For example,
  • the sensing means are located in a common horizontal plane across the width of the chute body. Should the sensing means indicate a variation in the level of the fiber layer across the width of the chute body, suitable signals are emitted to cause the deflecting means to deflect the incoming air stream. This, in turn, causes more fiber flock to be deposited in one portion of the chute body than another so as to fill up that portion at a faster rate and thus compensate for the variations in height of the flock layer in the chute body.
  • the deflecting means can utilize secondary air streams to impinge on the primary air stream at an angle, for example, perpendicularly, and cause a deflection of the primary air stream.
  • These secondary air streams can be produced under the influence of a pressure differential between the interior of the transporting duct and a source of secondary air outside the duct.
  • the secondary air streams can be produced by compressed air systems.
  • a mechanical deflecting means can be used.
  • one or more pivotal guide blades can be used in the chute so as to partially deflect the air stream away from the portions of the chute below the blades.
  • the deflecting means can be in the form of adjustable suction means which serve to generate a pneumatic force sufficient to create the transporting air stream. By adjusting each suction means relative to each other, the distribution of the transporting air stream into the chute can be effected.
  • the deflecting means can be actuated automatically or manually in response to the signals emitted by the sensing means over suitable actuating means.
  • FIG. 1 illustrates a view of a chute, with a front wall removed, utilizing an apparatus according to the invention
  • FIG. 2 illustrates a view taken on line 2-2 of FIG. 1;
  • FIG. 3 illustrates a top view of the structure of FIG.
  • FIG. 4 illustrates a top view of an alternative embodiment of the invention.
  • FIG. 5 illustrates a schematic block diagram of the operation of an apparatus according to the invention.
  • the apparatus of the invention is shown to be mounted on a flock depositing chute l at the intake side of, e.g., a card (not shown).
  • the flock depositing chute l substantially consists of a chute body la the construction of which is known as such, e.g., with a slotted wall, forming an air discharge and of an upper chute part or head 1b defining an entrar e fljhis lgad 1 b is connected via a connecting piece 2 to a pneumatic transporting duct (not shown).
  • the upper chute part lb can be detached from the chute body la and is provided with two entry openings 3, 3'.
  • Each opening 3, 3' is equipped with a centrifugal rotor 4, 4' such as a suction fan, for generating a fiber-flock-laden transporting air stream.
  • the two entry openings 3, 3 in the upper chute part 1b are connected to a pneumatic transporting duct via a substantially fork-shaped two-pronged connecting piece 2.
  • an adjustable deflecting means is positioned at suitable locations between the connecting piece 2 and the position of flock deposit in the chute body 14 in order to deflect the transporting air stream more towards one or the other of the entry openings 3, 3' as needed for uniformly distributing the fiber flocks deposited across the full width B of the chute.
  • These adjustable deflecting means act pneumatically on the flock-laden transporting air stream within a deflecting plane e in the direction of the chute width B, and are disposed, for example, in the connecting piece 2 itself.
  • Each deflecting means includes a passage opening 5 in one, or preferably on both sides of the connecting piece 2 as well as an adjustable sealing element 6 for each opening.
  • suitable activating mechanisms are provided, e.g., automatic adjusting elements 7 or a combination of alternatively automatically or manually activated adjusting elements 7 and 8.
  • the pneumatic deflection action on the transporting air stream is effected by a secondary air stream entering via a passage opening 5 under the influence of the higher pressure of the surrounding room if one of the two sealing elements 6 is opened.
  • the secondary air stream comprises a transversal component t, i.e., a component acting at an angle on the transporting air stream and serves to deflect the direction of flow of the air stream.
  • the chute need have no centrifugal rotors, or at least no rotors acting as suction fans, in the upper chute part lb.
  • Chutes of this type in most cases, are connected in groups to a common pneumatic transporting duct in which the pressure is above atmospheric pressure.
  • the intake of the secondary air is insured in a different manner from above, e.g., from a system of compressed air.
  • the compressed air system includes a compressed air line 9 on each side of the connecting piece 10 to deliver compressed air from a suitable source and which connects into the passage thereat.
  • Each sealing means 6 serves to selectively close off a passage 5 to the flow of compressed air as shown on the right and to open a pas sage 5 to the flow of compressed air as shown on the left as viewed. Also, if no centrifugal rotors are provided in the upper chute part 1b one single entry opening 3 instead of two as shown in FIG. 1, can be used. In this case, the entry opening 3 extends over the entire chute width so that instead of using a fork-shaped connecting piece, a connecting piece 10 of funnel shape (as shown in FIG. 4) is provided.
  • a manual adjustment of the defleeting means e.g., adjusting screws with handwheels and/or with adjusting spindles with motors activated manually by switches
  • Manually activated adjusting means for the deflecting means are especially useful for sporadically adjusting flock deposition.
  • each centrifugal rotors 4, 4 such as suction fans are used, each can be provided with an individually controlled drive motor 17, 17.
  • the deflecting means can alternatively be incorporated in the drive motors l7, 17.
  • the rotational speed of either of the two controlled drive motors 17, 17' is varied so that the transporting air stream is directed more towards the right or left side of the chute owing to the differing suction or blowing forces.
  • a speed variator (not shown) is provided.
  • the transporting air stream can also be controlled or guided as above.
  • each detector 13, 14 is in the form of an optical barrier, particularly a light beam barrier with an optical emitter 13a, 14a and receiver element 13b, 14b, respectively.
  • Other elements of suitable type e.g., ultrasonic detectors, can also be used.
  • these deflecting means are suitably connected with the detectors 13, 14 according to their type, as shown, e.g., in FIG. 5 wherein the arrangement of the individual components approximately correspond to the one shown in FIG. 1.
  • the optical detectors 13, 14, electrically or electronically controlled are connected via pneumatically or hydraulically activating adjusting elements 7 to the deflecting means. That is, the emitter 13a and receiver element 13b of the left-hand detector, as viewed, are connected over an electrical line to one drive motor 17 as well as to the adjusting element 7 for the guide blade 12.
  • the emitter 14a and receiver element 14b of the right-hand detector are connected to the right-hand drive motor 17, the right-hand adjusting element 7 for the pneumatic adjusting means and to the adjusting element 7 for the guide blade 12.
  • both suction fans 4, 4' can alternatively be driven off the same drive motor 17 transmission which includes a speed variator 18 to control the rotational speed of the fans 4, 4' relative to each other.
  • a speed variator 18 can be connected to a sensing means, as above, so as to be controlled thereby to effect a speed-up or slow-down of one fan relative to the other.
  • an adjusting element 7 of the deflecting means is activated.
  • the adjusting element 7 activated can be the one for the pneumatic deflecting means as shown at the right-hand upper portion of the connecting piece 2 in FIG. 3 or, as shown, at the right-hand side of the connecting piece in FIG. 4.
  • This adjusting element 7 then activates opening of the sealing element 6 and thus permits entry of the secondary air stream for deflecting the transporting air stream towards the left-hand region of the chute.
  • the detectors 13, 14 are connected only with the adjusting element 7 of the guide blade 12 instead of with the adjusting elements arranged on the connecting pieces 2, 10
  • the guide blade 12 is pivoted in a direction so that the transporting air stream is deflected towards the lefthand side.
  • flock deposition in the right hand region of the chute becomes practically stopped until the depositing height h in the left-hand region of the chute also has reached the height h,.
  • both detectors 13, 14 become activated. This causes a stop of the fiber flock supply from the machine supplying flocks in a manner known as such.
  • Manually operated adjusting means for the deflecting means can be provided in combination with the automatically activated adjusting means for the deflecting means for occasional calibration or, especially in smaller or simpler plants, also solely for regularly evening out the flock deposition in the chute.
  • the main advantage of the present invention is that influences, presently still unpredictable or still not known exactly, which cause uneven deposition of fiber flocks in the chute, can be eliminated or, respectively, automatically evened out so that a uniform density of the flock layer and, if a card is fed, of the card sliver is insured.
  • Apparatus as set forth in claim 2 which is further characterized in that said portion of said chute is a connecting piece and in that at least one passage opening is provided in said connecting piece on at least one side thereof for passage of a secondary air stream therethrough into said chute at an angle to the transporting air stream to deflect the transporting air stream in a direction across the width of said chute and in that a sealing element is provided in said opening to selectively seal said opening to said duct.
  • said deflecting means includes two centrifugal fan rotors in said chute for drawing the transporting air stream into said chute and a pair of controllable drive motors, each motor being connected to a respective rotor to vary the rotational speed of said respective l'OtOl'.
  • Apparatus as set forth in claim 2 further characterized in that said deflecting means includes two centrifugal fan rotors in said chute for drawing the transporting air stream into said chute and at least one speed variator connected to at least one of said rotors.
  • Apparatus as set forth in claim 2 further characterized in having at least one guide blade movably mounted in an upper part of said chute for movement across the width of said chute to deflect the transporting air stream across the width of said chute and an adjusting element connected to said blade to move said blade across said chute.
  • each said sensing means is an optical barrier.
  • each sensing means is an ultrasonic barrier.
  • a vertical stationary rectangular chute for receiving fiber flocks to be deposited in a column at an entrance end
  • a stationary duct for delivering a fiber-flock-laden transporting air stream to said chute
  • each said sensing means being connected to said deflecting means to individually activate said deflecting means in response to the detection of a portion of the flock column at said height.
  • said means includes at least one passage opening in at le as t one side of said chute for passage of a seconda?y air stream therethrough onto said transporting air stream at an angle and means for selectively sealing said passage to said secondary air stream.
  • said deflecting means includes at least one compressed air line on at least one side of said chute for passing a secondary air stream into said transporting air stream at an angle thereto.
  • said deflecting means includes at least one movably mounted guide blade in said chute.
  • said deflecting means includes a pair of suction fans in said chute for drawing in said transporting air stream, and means for rotating said fans at variable rates relative to each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US31986972 1972-01-04 1972-12-29 Apparatus for depositing fiber flock in a chute Expired - Lifetime US3865439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6172 1972-01-04

Publications (1)

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US3865439A true US3865439A (en) 1975-02-11

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US (1) US3865439A (es)
AR (1) AR202454A1 (es)
BR (1) BR7300052D0 (es)
CH (1) CH546833A (es)
DE (1) DE2264299C3 (es)
ES (1) ES410430A1 (es)
FR (1) FR2167579B1 (es)
GB (1) GB1422861A (es)
IT (1) IT974133B (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169632A (en) * 1976-08-24 1979-10-02 Rieter Machine Works, Limited Pneumatic system for feeding a plurality of cards with open fiber flocks
US4411562A (en) * 1975-07-16 1983-10-25 Riter Machine Works, Ltd. Apparatus and method for separating opened end flocks from a transporting air stream
US4462140A (en) * 1982-09-07 1984-07-31 Rando Machine Corporation Pneumatic leveling device for fiber feeding apparatus
US4614477A (en) * 1983-06-27 1986-09-30 Hagenbuch Roy George Le Apparatus and method for monitoring and controlling the volumetric loading of a truck body
AU663847B3 (en) * 1995-06-21 1995-10-19 Beverley J McPhee Word game
WO2006053454A1 (de) * 2004-11-19 2006-05-26 Maschinenfabrik Rieter Ag Speisevorrichtung
EP2119817A2 (de) 2008-05-15 2009-11-18 Hubert A. Hergeth Chutespeisung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH599990A5 (es) * 1975-07-16 1978-06-15 Rieter Ag Maschf
DE3617527A1 (de) * 1986-05-24 1987-11-26 Truetzschler & Co Vorrichtung zum speisen von fasermaterialverarbeitenden maschinen, z.b. karden, krempeln, schlagmaschinen o. dgl.
DE3617526A1 (de) * 1986-05-24 1987-11-26 Truetzschler & Co Verfahren und vorrichtung zum speisen einer anzahl von karden, krempeln o. dgl.
AT395727B (de) * 1989-02-23 1993-02-25 Fehrer Textilmasch Vorrichtung zum beschicken eines vorvliesbildners mit fasern
DE10233011B4 (de) 2002-07-20 2020-03-19 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereimaschine zur Erfassung und Beurteilung von Textilfasermaterial
EP2284299B1 (de) * 2009-08-14 2012-05-30 Oskar Dilo Maschinenfabrik KG Vorrichtung zum Aufteilen eines Feststoffpartikel mitführenden Gasstroms

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586265A (en) * 1897-07-13 Beebe
US1391744A (en) * 1920-06-19 1921-09-27 Locomotive Stoker Co Fuel-distributer
US1770707A (en) * 1927-05-25 1930-07-15 Caterpillar Tractor Co Straw spreader
US2493652A (en) * 1944-09-14 1950-01-03 Sealy Apparatus and method for making cushions
US2772124A (en) * 1955-12-28 1956-11-27 Radar Pneumaties & Engineering Distributing apparatus for material in particle form
US2845661A (en) * 1953-03-31 1958-08-05 Hoganas Billesholms Ab Apparatus for a uniform distribution of a fibrous material on a conveyor belt
US3014603A (en) * 1957-06-21 1961-12-26 Fellner & Ziegler Gmbh Charging top construction for blast furnaces
US3206044A (en) * 1963-12-09 1965-09-14 Martin C Schwichtenberg Orbital silage distributor
US3415262A (en) * 1965-10-22 1968-12-10 Foster Wheeler Corp Aspiration elimination for diverting valves
US3430788A (en) * 1967-03-08 1969-03-04 John Walter Edming Silage distributor
US3552800A (en) * 1967-09-28 1971-01-05 Truetzschler & Co Apparatus for the pneumatic feeding of fiber tufts to spinning mill machinery
US3708210A (en) * 1971-07-26 1973-01-02 Rieter Ag Maschf Method and apparatus for separating opened fiber flocks from an air stream

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1508998A (es) * 1968-03-25
DE1206767B (de) * 1961-05-25 1965-12-09 Schubert & Salzer Maschinen Anlage zum Speisen einer Gruppe von Spinnereivorbereitungsmaschinen, insbesondere Karden

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586265A (en) * 1897-07-13 Beebe
US1391744A (en) * 1920-06-19 1921-09-27 Locomotive Stoker Co Fuel-distributer
US1770707A (en) * 1927-05-25 1930-07-15 Caterpillar Tractor Co Straw spreader
US2493652A (en) * 1944-09-14 1950-01-03 Sealy Apparatus and method for making cushions
US2845661A (en) * 1953-03-31 1958-08-05 Hoganas Billesholms Ab Apparatus for a uniform distribution of a fibrous material on a conveyor belt
US2772124A (en) * 1955-12-28 1956-11-27 Radar Pneumaties & Engineering Distributing apparatus for material in particle form
US3014603A (en) * 1957-06-21 1961-12-26 Fellner & Ziegler Gmbh Charging top construction for blast furnaces
US3206044A (en) * 1963-12-09 1965-09-14 Martin C Schwichtenberg Orbital silage distributor
US3415262A (en) * 1965-10-22 1968-12-10 Foster Wheeler Corp Aspiration elimination for diverting valves
US3430788A (en) * 1967-03-08 1969-03-04 John Walter Edming Silage distributor
US3552800A (en) * 1967-09-28 1971-01-05 Truetzschler & Co Apparatus for the pneumatic feeding of fiber tufts to spinning mill machinery
US3708210A (en) * 1971-07-26 1973-01-02 Rieter Ag Maschf Method and apparatus for separating opened fiber flocks from an air stream

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411562A (en) * 1975-07-16 1983-10-25 Riter Machine Works, Ltd. Apparatus and method for separating opened end flocks from a transporting air stream
US4169632A (en) * 1976-08-24 1979-10-02 Rieter Machine Works, Limited Pneumatic system for feeding a plurality of cards with open fiber flocks
US4462140A (en) * 1982-09-07 1984-07-31 Rando Machine Corporation Pneumatic leveling device for fiber feeding apparatus
US4614477A (en) * 1983-06-27 1986-09-30 Hagenbuch Roy George Le Apparatus and method for monitoring and controlling the volumetric loading of a truck body
AU663847B3 (en) * 1995-06-21 1995-10-19 Beverley J McPhee Word game
WO2006053454A1 (de) * 2004-11-19 2006-05-26 Maschinenfabrik Rieter Ag Speisevorrichtung
EP2119817A2 (de) 2008-05-15 2009-11-18 Hubert A. Hergeth Chutespeisung
EP2119817A3 (de) * 2008-05-15 2011-05-18 Hubert A. Hergeth Chutespeisung

Also Published As

Publication number Publication date
BR7300052D0 (pt) 1973-08-30
DE2264299C3 (de) 1979-05-03
ES410430A1 (es) 1976-05-01
AR202454A1 (es) 1975-06-13
CH546833A (de) 1974-03-15
FR2167579B1 (es) 1976-10-29
IT974133B (it) 1974-06-20
DE2264299A1 (de) 1973-07-12
FR2167579A1 (es) 1973-08-24
DE2264299B2 (de) 1978-09-07
GB1422861A (en) 1976-01-28

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