US3920181A - Centrifugal hydroextractor - Google Patents

Centrifugal hydroextractor Download PDF

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Publication number
US3920181A
US3920181A US487254A US48725474A US3920181A US 3920181 A US3920181 A US 3920181A US 487254 A US487254 A US 487254A US 48725474 A US48725474 A US 48725474A US 3920181 A US3920181 A US 3920181A
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US
United States
Prior art keywords
basket
disc
hydroextractor
band
rotating
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
Application number
US487254A
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English (en)
Inventor
Berlando Lega
Giannangiolo Cecchi
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Cima Impianti SpA
Original Assignee
TEXFLUID S A S ENTIRE
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Assigned to CIMA IMPIANTI S.P.A., PISTOIA, VIA GORA E BARBATOLE NO 192, FISCAL AND VAT CODE 00438160475 reassignment CIMA IMPIANTI S.P.A., PISTOIA, VIA GORA E BARBATOLE NO 192, FISCAL AND VAT CODE 00438160475 ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: TEXFLUID
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • D06B15/10—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by use of centrifugal force

Definitions

  • the present invention refers to a continuously operating centrifugal hydroextractor, particularly adapted for treating fibrous materials such as natural and artificial textile staples.
  • substantially such a hydroextractor is made of a rotating frusto-conical perforated basket and contains a member which distributes the material to be centrifuged which rotates at a different speed from that of the basket.
  • the said distributing member substantially comprises blades having surfaces which guide the material from a central feed point towards'the internal peripheral surface of the perforated basket, and which bear at least one disc placed perpendicularly to the axis of rotation of the basket, and which closes this latter on its upper edge.
  • Said disc has along its peripheral edge two or more openings for the exit of the material, each one separated at an angle from the edge of the relative blade to allow the exit of the centrifuged material towards a collecting chamber placed above.
  • a continuously working hydroextractor for fibrous materials of the type comprising a rotating frusto-conical basket having an upper circumference edge, and a distributing means for the material rotating at a speed different to that of the basket, placed coaxially and internally of the basket itself, said distributing member comprising blades defining guide surfaces for the material, from a central feed point towards the internal peripheral surface of the above-mentioned basket, and at least one disc perpendicular to the rotation axis of the basket, which is fixed to the abovementioned distributing member to rotate with it, said disc having on its external peripheral edge apertures for the exit ofthe material to be treated, with each opening. which is angularly distant from the edge of the relative blade, said basket having an upper perforated filtering band, and said disc being below as in backward axial position with respect to the said filtering band.
  • the filtering area of the basket is easily accessible from the outside for cleaning, for example by an opposite window out into the upper part of the gatherer casing for collecting the material which is above the basket itself.
  • the disc since the disc is at a certain distance from the upper edge of the cylindrical basket, it derives that from the exit point of the material (openings on the disc), to the end part or upper edge of the basket, there is such a distance as to permit the fibres to totally rest, a part on the extension of the non-perforated surface of the basket above the disc, and a part on the filtering area or surface, so as not to create tensions and therefore breakages of the flock during the phase in which the flock itself, or the fibrous material, leaves the basket to then be sent towards the discharge exit of the apparatus.
  • the exit point of the material openings on the disc
  • the solution adopted consisting of having the filtering surface on a frustum cone band of steel plate, perforated, net-like or of other filtering material, fixed releasably to the basket itself, further to being necessary for construction reasons, which permit the rapid changeover of the filter band itself, is also dictated by the necessity of directing the liquid extracted towards the filtering surface at a certain impact angle.
  • the filtering surface were in the plane or the extension of the surface of the basket, the liquid extracted which has passed across the gap existing between the disc and the said basket, would encounter the filtering surface in a tangential direction, that is without any variation in direction in the radial sense.
  • FIG. I represents a vertical cross-section of a centrifugal hydroextractor according to the invention.
  • FIG. 2 represents a partially broken plan view from the top
  • FIG. 3 represents a schematic plan view, on a smaller scale of FIG. 2 without the disc valve, to better show the disposition of the blades of the rotating distributor.
  • the hydroextractor substantially comprises a circular vat 10, internally of which there is a frustum cone basket 11, supported and rotated by means ofa hollow shaft 12. lnternally of the rotating backet 11, supported by a shaft 12', there is a rotating distributor, indicated as a whole by [3, and this latter has a base 14 onto which the material to be centrifuged falls, centrally fed by an upper hopper l5.
  • Said rotating distributor l3 comprises two or more blades l6 which extend in opposite radial directions and with their curved 16' serve to send on and guide the fibrous material towards the internal surface of the basket in function of the different rotation speeds at which the distributor l3 and the basket 11 are made to rotate.
  • each blade 16, may have a curved surface 17, such as to form a gap with the internal surface of the basket which increases the direction contrary to that of the relative motion of the distributor with respect to the basket, as well as a posterior deflecting element 18, which facilitates the exit of the material in the discharge stage and impedes the material from inserting itself between the basket and a blade.
  • the rotating distributor l3 bears a disc 19, fixed to the structure of the distributor by means of the tie rods 20.
  • the disc 19, has, in the case illustrated. two diametrically opposed openings 21, for the exit of the material, the said openings are spaced angularly with respect to the edge 13' of the respective blade 16, as can be clearly understood from the plan view in FIG. 2.
  • the functions of the distributors and of the disc will be understood hereinafter with reference to the description of the working of the machine.
  • the disc 19 which is placed perpendicularly to the axis of rotation of the basket and the distributor 13, is disposed below the upper edge of the basket itself and below a filtering perforated band 22 formed or fixed in correspondence with the upper edge of the basket.
  • the basket 11 under the disc 19 preferably has a smooth surface, that is, is not perforated, which continues for a certain tract beyond the disc 19, up to the formation of a small step or surfacedifferently inclined, 23, placed in correspondence with the lower edge of the filtering band 22 previously mentioned.
  • the said small step 23 serves to change the direction of the liquid extracted from the fibrous material which, due to the centrifugal force, runs along the frustum cone internal surface of the basket ll, after having crossed the annular gap, formed between the external circumferential edge of the valve and the disc 19 and the internal surface of the basket ll. goes towards the filtering area or band 22, with an impact angle with respect to the latter, which must preferably be as near as possible to 90.
  • the filtering band 22 which substantially constitutes an extension of the basket ll, both for construction reasons which require its rapid substitution, as well as for the formation of the step 23, previously mentioned. is made of a band of perforated steel plate or of metal netting, which is suitably fixed by means of screws or nuts 24, in correspondence with the step 23 on the r0- tation basket 11, as previously mentioned.
  • a ring 25 is placed above the filtering band 22 to form an annular edge slightly jutting towards the inside. which impedes the residual water from continuing its run towards a gatherer 26 above the basket 11, into which the material centrifuged is pushed and sent towards the side exit 27.
  • the liquid which exits from the basket through the filtering band 22 gathers in the vat l0, from which it is outwardly discharged through a siphon 29, which allow a smooth flow.
  • a window 30, placed on the framework of the gatherer 26, allows easy inspection of the filtering band 22 of the previously mentioned basket.
  • deflectors 28 are placed along the circle of an are behind, or downstream of each opening 2] for the exit of the material (with reference to the relative movement of the disc 19) and which corresponds to the area in which there is the passage of the greatest quantity of liquid extracted from the fibrous material across the annular gap existing between the edge of the disc 19 itself, and the internal surface of the basket 11, the deflectors 28, in rubber for example or any other flexible or rigid material, send the flow of liquid towards the filtering area 22 of the basket ll, avoiding the formation of mist or of small drops due to the effect of the strong ventilation existing inside the machine, which otherwise would be deposited on the material already centrifuged exiting from the opening 21.
  • the deflectors could be made of a single flexible deflector element placed above and along the whole peripheral edge of the disc 19.
  • the basket ll the disc 19 and the rotating distributor 13 with the blades, through their shafts 12 and 12' respectively, joined to a suitable drive (not shown) are made to rotate, for example, in an anti-clockwise direction, at speeds different to one another.
  • the blades and disc rotate at a speed of 9l9.4 rpm. and that the basket rotates at a speed of 920 r.p.m.; for the reasons given above it can be said that the relativemotion of the blades and disc with respect to the basket is a rotation of 0.6 r.p.m.; in a clockwise direction.
  • the material is thus placed between the internal surface of the basket and the lower surface of the disc. in this position the material is very adherent to the inter nal surface of the basket. due to the centrifugal force and is not at all adherent to the lower surface of the disc. For this reason the material still remains in the basket while the disc slides above the material since this latter rotated with a rotating movement of 0.6 r.p.m. with respect to the basket itself.
  • the disc has apertures along its external edge; therefore the exit of the material from the basket occurs when the said apertures of the disc are above the material.
  • the amount of time spent by the material inside the basket is constant, and is determined by the relative motion between the disc 19 and the basket 11, as well as the constant angular distance between the edge 13' of the blade with respect to the opening 21 which follows it.
  • the frustum cone basket has no perforations inside or underneath the disc, since, inevitably they would detain small flocks or fibres of material and thus there would be the possibility of contamination (in the case of a change in the type and/or the colour of the material), of the material to be successively treated.
  • the annular gap between the disc and the internal surface of the basket is of such a dimension as to permit the passage of the liquid extracted but not the passage of the material. The liquid which exits through the said annular gap is sent.
  • a continuously operating centrifugal hydroextractor of the type comprising a frustum cone rotating basket. and a mechanical distributor rotating at a speed different to that of the basket. placed coaxially internally to this latter.
  • the said mechanical distributor comprising blades to guide the material from a central feedpoint towards the peripheral surface of the said basket. and at least one disc placed perpendicularly to the axis of rotation of the basket, rotating fixedly to the said blades.
  • the said disc having openings on its peripheral edge for the exit of the material, with each opening an gularly spaced from the edge of the relative blade.
  • said disc defining with the internal surface of the basket, an annular gap for the passage of the centrifuged liquid. and that the said basket has on the top a perforated filtering band. the said disc being below the perforated band.
  • a hydroextractor according to claim 1 in which said basket has the formation of a step in correspondence with the lower edge of the said filtering band.
  • a hydroextractor according to claim 1 in which the said basket has. underneath the disc. a smooth, imperforate wall.
  • a hydroextractor according to claim 1 in which the said disc has, along the gap of passage of the centrifuged liquid. deflecting elements which direct the liquid towards the said filter band.
  • a hydroextractor according to claim 10 in which the said deflector elements are placed along a tract of the peripheral edge of the disc placed posteriorly to each opening for the exit of the material. with reference to the direction of rotation of said disc with re spect to the rotating basket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Centrifugal Separators (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Extraction Or Liquid Replacement (AREA)
US487254A 1973-07-26 1974-07-10 Centrifugal hydroextractor Expired - Lifetime US3920181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT27124/73A IT992713B (it) 1973-07-26 1973-07-26 Idroestratiore centrifugo a proces so continuo in particolare per materiale fibroso

Publications (1)

Publication Number Publication Date
US3920181A true US3920181A (en) 1975-11-18

Family

ID=11221009

Family Applications (1)

Application Number Title Priority Date Filing Date
US487254A Expired - Lifetime US3920181A (en) 1973-07-26 1974-07-10 Centrifugal hydroextractor

Country Status (5)

Country Link
US (1) US3920181A (it)
JP (1) JPS5224261B2 (it)
DE (1) DE2433465A1 (it)
ES (1) ES204852Y (it)
IT (1) IT992713B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517752A (en) * 1983-06-27 1985-05-21 Machine Technology, Inc. Splash retarder
CN116971129A (zh) * 2023-08-03 2023-10-31 上海锦湾实业有限公司 一种具有光感变色性新型涤纶织带生产设备及其工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1231420A (en) * 1916-02-10 1917-06-26 Adolph P Palmer Separator and amalgamator.
US1415939A (en) * 1921-04-28 1922-05-16 Rexford C Mabry Centrifugal pulp-drying machine
US1887955A (en) * 1931-03-02 1932-11-15 American Laundry Mach Co Paper pulp extractor
US3647135A (en) * 1968-12-09 1972-03-07 Fives Lille Cail Continuously operating centrifugal separator
US3741465A (en) * 1971-01-20 1973-06-26 Star Cutter Co Centrifugal separator with internal scraper blades

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1231420A (en) * 1916-02-10 1917-06-26 Adolph P Palmer Separator and amalgamator.
US1415939A (en) * 1921-04-28 1922-05-16 Rexford C Mabry Centrifugal pulp-drying machine
US1887955A (en) * 1931-03-02 1932-11-15 American Laundry Mach Co Paper pulp extractor
US3647135A (en) * 1968-12-09 1972-03-07 Fives Lille Cail Continuously operating centrifugal separator
US3741465A (en) * 1971-01-20 1973-06-26 Star Cutter Co Centrifugal separator with internal scraper blades

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517752A (en) * 1983-06-27 1985-05-21 Machine Technology, Inc. Splash retarder
CN116971129A (zh) * 2023-08-03 2023-10-31 上海锦湾实业有限公司 一种具有光感变色性新型涤纶织带生产设备及其工艺

Also Published As

Publication number Publication date
JPS5224261B2 (it) 1977-06-30
ES204852Y (es) 1976-05-16
JPS5043565A (it) 1975-04-19
ES204852U (es) 1976-02-01
IT992713B (it) 1975-09-30
DE2433465A1 (de) 1975-02-20

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AS Assignment

Owner name: CIMA IMPIANTI S.P.A., PISTOIA, VIA GORA E BARBATOL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TEXFLUID;REEL/FRAME:004094/0391

Effective date: 19830107

Owner name: CIMA IMPIANTI S.P.A., PISTOIA, VIA GORA E BARBATOL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TEXFLUID;REEL/FRAME:004094/0391

Effective date: 19830107