US2573585A - Continuous extractor - Google Patents

Description

Oct. 30, 1951 v D, M MGBEAN 2,573,585

CONTINUOUS yEXTRACTOR Filed April 26, 194e V00 loc /r te-n/ f' vlan k I /L/; 7 .//7g ,l/ 38 l 1 @if L/f/ i f1 57 ,59 J .50n I n 56 59 .18 sz 37 34 I N VEN TOR.

Patented Oct. 30, li951 UNITED STATES PATENT OFFICE CONTINUOUS EXTRACTOR Douglas M. McBean, Rochester, N. Y.

Application April 26, 1946, Serial No. 665,239

Claims. l

This invention relates to continuous extractors, and more particularly to an extractor for continuously extracting juice from grapesrand the like. Y

The principal object of the present invention is to provide an extractor into which material from which the contained liquid is to be extracted,

such as grapes or grape mash, can be introduced in a constant ow and which separates the grape juice from the pulp as a continuous operation.

Another object is to provide such an extractor which separates juice from the pulp by. first 'impacting the mash andthereafter gently but with progressively increased force pressing'the pulp so as to express the .remaining juice contained therein.

Another object is to provide such an extractor with means for controlling or varying the extent or degree of extraction of the juice from the pulp.

Another object is to provide such an extractor with means for continuously and separately removing the extracted juice and pulp from the extractor.

Other objects are to provide such an extractor which is compact, sturdy and simple in construction, not liable to get out of order, easy to keep clean and maintain, and inexpensive to manufacture.

The accompanying drawing is a vertical, central section through the continuous extractor forming the subject of the present invention.

The numeral I represents a generally cylindrical frame or housing which is open at its upper end and closed at its lower end, except as more fully described hereinafter, the base of this housing being provided with feet which rest upon any suitable supporting surface. A hollow shaft 2 is journaled at its lower end in the bottom of the housing I, and its upper end issupported by a bearing 3 mounted on an arm of a bracket 4 which may be secured to the housing I in any suitable manner. The means shown for journaling the lower end of the shaft 2 in the bottom of the housing I include a bearing 5 arranged on a slightly reduced end extension of the shaft 2, a nut 6 screwed on the extreme threaded end portion of the reduced shaft end and thus holding the bearing in position on the shaft, a cup-shaped journal member I supporting the bearing 5, and a bearing 8 in turn supporting the member 1 and being mounted in a central recess provided in the bottom of the housing I. The shaft` 2 is shown as being rotated by apulley Sffast to the shaft and-belts"k IllV driven by a power source gnot 2 7 shown) although any other suitable driving means may be employed.

Fast to the lower end of the shaft 2 is an inner basket or cylinder II having a series of radial holes I2 arranged in the upper part thereof, the lower part I3, however, of the cylinder II being unprovided with such holes. The grapesA or grape-mash are introducedinto the upper end of the 'shaft 2 from a supply pipe I4 and flow into the inner cylinder II through holes I5 provided in the shaft 2. A plug I6 is arranged in the shaft 2 immediately below the holes I5 to prevent. th'e lower portion of the hollow shaft from becoming plugged with mash. I

An outer basket or cylinder I1, the upper por-- tion of which is imperforate, encloses the inner cylinderv II in spaced relation thereto and is arranged inside the housing I. This outer cylinder is journaled on the lower end of shaft 2 by being threadedly secured to the journal member 1, as indicated at I8. A seal I9 is interposed' be'- tween the central bore provided in the bottom o the outer cylinder Il and the shaft 2. i

The upper, open end of the outer cylinder-III is covered by a cover plate 20 having an internally threaded depending rim which screws on the external threads provided on the upper end of the outer cylinder I'I. The cover 20 has an upwardly extending neck 2| which surrounds a portion of the shaft 2 in slightly spaced relation'thereto; a seal 22 being interposed between the `cover 20 and the shaft 2. The cover 20 is journaled on'an arm of the bracket 4 by means of the bearingf23 carried thereby. The cover 20 and outer cylin-i der II are rotated by means of a pulley 24, keyed, as shown, to the neck 2| of the cover and belts 25 which are operatively connected to any suitable power source (not shown), although any other suitable driving means may be employed. The inner and outer cylinders, II and Il, rei spectively, are caused to rotate in the same direction in a maner hereinafter described and as shown by the arrows on the drawing. y

The exterior of the inner cylinder I I is formed to provide a thread 26 which is shown as being rectangular in cross-section and of uniform pitch throughout its entire axial length. Opposingthie thread 26 and formed on the vinner periphery ,of the outer cylinder II is a thread 2'I. Thisthead 2'I is shown as having ridges separated by grooves of concave form .in cross-section and has a which progressively decreasesV from theftop'of the outer cylinder`v I'Iitoward the bottom theref-v of, j' this thread also progressively decreasingl depth toward the ibottomof the outercylinde'r-i awa-,sas

ent invention provides a continuous; juice v extractor which separates the juice from grapes and like material by first impacting the mash vand thereafter gently but with progressively increased force pressing the remainingpulp so as to express the residual juice contained in the pulp. Further, the degree of dryness of the pulp after treatment can be regulated as desired and the treated pulpcan be continuously removed from the extractor as Well as the juice separated therefrom. Also, the extractor has the advantages of compactness, strength, simplicity, dependability, ease of cleaning and maintenance, and inexpensive manufacture.

I claim Y 1. A continuous extractor comprising a frame, a hollow shaft journaled on said frame and having openings, a cylinder mounted on said shaft and having openings in the side thereof opposite from said shaft openings butin spaced relation thereto, an outer cylinder surrounding said first cylinder and being journaled on said shaft, means for rotating said shaft, means for rotating said outer cylinder relative to said rst cylinder, means for introducing material to be treated into said holloW shaft, said material being conducted through said shaft openings and through said openings in said first mentioned cylinder, thread means arranged on the opposing peripheral surfaces of the cylinders for compressing said material, and means for removing the liquid separated from said material. Y

2. A continuous extractor comprising a frame, a hollow shaft journaled on said frame and having openings, a cylinder mounted on said shaft and having openings in the side thereof opposite from said shaft openings but in spaced relation thereto, an outer cylinder surrounding said first cylinder and being journaled on said shaft, means for rotating said shaft, means for rotating said outer cylinder relative to said first cylinder, means for introducing material to be treated into said hollow shaft, said material being conducted through said shaft openings and through said openings in said rst mentioned cylinder, thread means arranged on the opposing peripheral surfaces of the cylinders for compressing said material, means for continuously removing the liquid` separated from said material, and means for separately and continuously removing the residue of said treated material.

3. A continuous extractor comprising inner and outer cylinders rotatable about a common axis, means for rotating one cylinder relative to the other, means for introducing material to be treated into the space between said cylinders, means arranged on the opposing peripheral surfaces of said cylinders for movingsaid material toward one end of said cylinders and progressively compressing said material thereby to express the liquid from said material, said outer cylinder being provided with an outlet for the residue of said treated material and means arranged adjacent the end of said outer cylinder toward which said material is moved for changing the-size of said outlet, means for collecting and removing the said residue discharged through said outlet, and means for removing the liquid separated from said material.

4. A continuous extractor comprising an inner cylinder rotatable about a vertical axis and having-openings in its upper part and having an imperforate portion in its lower part, `an outer cylinder surrounding said inner cylinder and rotatable about said vertical axis and having an imperforate portion surrounding said upperand lower parts of said inner cylinder, means for rotating said cylinders in the same direction but at different speeds, means for impacting material to be treated against said upper part of said inner cylinder thereby to express some of the liquid contained in the material, the extracted liquid remaining in said` inner cylinder and collecting in the said imperforate portion of the lower part thereof and the balance of the partially treated material passing through said openings due to the action of centrifugal force thereon into the annular space between said inner and outer cylinders, means arranged in said space for compressing said partially treated material, the liquid expressed from said partially treated material by such compression flowing into said inner cylinder through said openings therein, means for continuously discharging theV liquid from said inner cylinder, and means for continuously discharging the residue of said treated material from said space.

' 5. A continuous extractor comprising an inner cylinder rotatable about a vertical axis and having openings in its upper part and having an imperforate portion in its lower part, an outer cylinder surrounding said inner cylinder and rotatable about said vertical axis and having an imperforate portion surrounding said upper and lower parts of said inner cylinder, means for rotating said cylinders in the same direction but at different speeds, means for impacting material to be treated against said upper part of said inner cylinder thereby to express some of the liquid contained in the material, the extracted liquid remaining in said inner cylinder and collecting in the said imperforate portion of the lower part thereof and the balance of the partially treated material passing through said openings due to the action of centrifugal force thereon into the annular space between said inner and outer cylinders, an external thread arranged on said inner cylinder, an internal thread arranged on said outer cylinder, said threads having their respective pitches and depths so arranged as to move said partially treated material downwardly through said space and progressively compress said partially treated material, the liquid expressed from said partially treated material by such compression owing into said inner cylinder through said openings therein, and means for continuously discharging the liquid from said inner cylinder, the lower part of said outer cylinder having an outlet leading from said space and throughwhich the residue of the treated material is continuously discharged.

6. A continuous extractor comprising an inner cylinder rotatable about a vertical axis and having openings in its upper part and having an imperforate portion in its lower part, an outer cylinder surrounding said inner cylinder and rotatable about said vertical axis and having an imperforate portion surrounding said upper and lower parts of said inner cylinder, means for rotating said cylinders in the same direction but at different speeds, means for impacting material to be treated against said upper part of said inner cylinder thereby to express some of the liquid contained in the material, the extracted liquid remaining in said inner cylinder and collecting in the said imperforate portion of the lower part the action of centrifugal force thereon into the annular space between said inner and outer cylescasos:

. 7 irders,l aia-external threadl arranged ori said inner' cylinder', anv internal' thread arranged on'said outer' cylinder, said threads having `their respec-f tive pitches and depths so' arranged as to move' saidY partially treated material. downwardly through said space and progressively' compress Ysaidv partially treated material, the liquid ex-7 pressed from said `partially treated material by such compression flowing into said inner cylinder through said openings, therein,- meansV for continuously discharging the liquid fromsaid inner cylinder, and adjustable outlet Ameans arranged adjacent the lower end of said outer cylinder' for' continuously discharging the residue of the treated material from said space;

' 7. A- continuoug extractor compris-ing a housing having a trough in the base thereof and an out-'- let leading from said trough, an inner cylinder journaled in said housing so as to rotate about a vertical axis and having openings in the bottom thereof, an outer cylinder surrounding said inner cylinder on the side and bottom thereof and journaled in said housing so as to rotate about said vertical axis and having a trough in the bf-Jttomy thereof and openings in the bottom oi this trough, means for rotating one of said cylinders relative' to the other, means for introducing material to be treated into the annular space between said Y cylinders, means for compressing said material in saidspace, and meansV for permitting the liquid expressed from said material to enter said inner cylinder, the liquid in said inner cylinder being continuously discharged therefrom through said first mentioned openings into said second' mentioned/trough, and through said second mentioned openings into said rst mentioned trough from which it is discharged through said outlet.

8. A continuous extractor comprising a housing including a base having inner and outer troughs and an koutlet for each trough, an inner cylinder journaled in said housing s0 as to rotate about a vertical axis and having openings in the bottom thereof, an outer cylinder surrounding said inner cylinder on the side and bottom thereof and journaled in said housing so as t0 rotate about said vertical axis and having a trough in the bottom thereof arranged below said inner cylinder openings, said outer cylinder trough having openings in the bottom thereof, said inner`trough in said i housing being arranged below said last mentioned openings, means for rotating one of said cylinders relative to the other, means for introducing material to be treated into the annular space benecting said space with said outer trough whereby the residue of the treated material is continuously discharged fromY said space through. said outer cylinder openings into said outer trough and j thence through said outer trough outlet.

9. A continuous extractor comprising a housing including a base having inner and outer troughs and an outlet for eachV trough, an inner cylinder journaled Vin said housing so as to rotate about a vertical axis and having openings in theY bottom thereof, an outer cylinder surrounding said cylinder on the side and bottom thereof and journaled in said housing so as to rotate about said vertical axis and having a trough in the bottom thereof arranged. below said inner cylinder openings, said outer cylinder trough having openings in the bottom thereof, said inner trough in said housing being arranged below said last mentioned openings', means for rotating one of said cylinders relativeto thev other, means for introducing material to be treated into the annularspace between said cylindersfmeans for compressing said material in said space, means for permitting the liquid expressed from said material to enter said inner cylinder, the liquid in said inner cylinder being continuously discharged therefrom through said inner' cylinder openings into said outer cylinder trough, through said outer cylinder trough' openings into said innter trough from which it is discharged through said inner trough outlet, said outer cylinder having openings connecting said space with said outer trough whereby the residue of the treated material is continuously' discharged from said space through said outer cylinder openings into said outer trough and thence through said outer trough outlet, and means for regulating the size of Ysaid outerrcylinder openings so as to control the dryness of the residue of the treated material'.4

10. A'continuous extractor, comprising an inner cylinder rotatable about a vertical axis, an outer cylinder surrounding said inner cylinder in'spaced relation thereto and rotatable about said vertical axis, means for rotating said cylinders in the same' directionk but at different speeds, means arranged to'admit the material to be treated into said inner cylinder to be acted upon by centrifugal force and to be impacted against the inner cylinder thereby to*v expressA some of the liquid contained in said material, conducting means arranged for movement of the balance of the partially treated Inaterial from the interior of said inner cylinder into the annular space between said inner and outer cylinders, means arranged in said space for com-V pressing said partially treated material, said conducting means permitting the liquid expressed from said partially treated material by such compression to now from said annular spacey countercurrent rto the movement of said partly treated material into said inner cylinder, means for continuously discharging the liquid from said inner cylinder, and means for continuously discharging the residue of said treatedV material from said annular space. Y

DOUGLAS M. MCBEAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 433,691 Morrell Aug. 5, 1890 750,668 Liedbeck Jan. 26, 1904 780,415 Eavens'on Jan. 17, 1905V 1,467,737 Schueler Sept. 11, 1923 Y 2,415,600 Meakin Feb. 11, 1947 21,419,545 Gray Apr. 29, 1947 FOREIGN PATENTS Number Y Y Y, Country I Date 26,177 f Germany Feb. 27, 1884 234,029 Germany f 'Apr.28.f1911

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