US3583875A - Straining tub - Google Patents

Straining tub Download PDF

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Publication number
US3583875A
US3583875A US764382A US3583875DA US3583875A US 3583875 A US3583875 A US 3583875A US 764382 A US764382 A US 764382A US 3583875D A US3583875D A US 3583875DA US 3583875 A US3583875 A US 3583875A
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US
United States
Prior art keywords
grain
tub
straining
discharge opening
disposed
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
US764382A
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English (en)
Inventor
Robert Wiesenauer
Arthur Fauth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A Ziemann GmbH
Original Assignee
A Ziemann GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19671642766 external-priority patent/DE1642766C3/de
Application filed by A Ziemann GmbH filed Critical A Ziemann GmbH
Application granted granted Critical
Publication of US3583875A publication Critical patent/US3583875A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12C—BEER; PREPARATION OF BEER BY FERMENTATION; PREPARATION OF MALT FOR MAKING BEER; PREPARATION OF HOPS FOR MAKING BEER
    • C12C7/00—Preparation of wort
    • C12C7/14—Lautering, i.e. clarifying wort
    • C12C7/16—Lautering, i.e. clarifying wort by straining
    • C12C7/17—Lautering, i.e. clarifying wort by straining in lautertuns, e.g. in a tub with perforated false bottom
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12C—BEER; PREPARATION OF BEER BY FERMENTATION; PREPARATION OF MALT FOR MAKING BEER; PREPARATION OF HOPS FOR MAKING BEER
    • C12C7/00—Preparation of wort
    • C12C7/24—Clarifying beerwort between hop boiling and cooling

Definitions

  • a round straining tub which comprises a tub member including a tub bottom defining a discharge opening.
  • a grain removing device is rotatable about a vertical axis, movable over a bottom and thereby feeding from the grain removing device toward the discharge opening.
  • the discharge opening is disposed at about the center of the tub bottom.
  • the present invention relates to a straining tub, in general, and to a round straining tub with a grain discharge opening in the tub bottom and a grain releasing apparatus rotatable about a vertical axis, moving over a lower bottom and thereby feeding the grain to the discharge opening, in particular.
  • the discharge opening is provided in the outer edge zone of the bottom adjacent the rim.
  • This position of the discharge opening is suitable insofar as the distance of the grain in the prior known straining tubs is brought about either by means of adjustable knives of a loosening device moving in circular paths about the center of the straining tub, or by a radical grain slat provided on the loosening device, through which the grain is pushed eventually to the outer edge of the lower bottom, where they fall out downwardly from the discharge opening which is closed during the straining process.
  • the arrangement of the discharge opening in the outer edge zone of the bottom has, however, the great disad vantage that the removal of the grain from the straining tub takes a comparatively long time, because substantially, grain is pushed into the discharge opening only when the grain slat or the knives reach the opening. This is only once the case during each revolution of the loosening device.
  • grain can be pushed out without interruption.
  • the grain fed inwardly from the grain removal device is pushed without retardation into the discharge opening, when it has reached the center of the bottom of the tub.
  • the effect of a central discharge opening is, thus, to be compared with that of a discharge opening having the shape of an annular slot extending along the total outer edge zone of the tub bottom. From this comparison, it can be recognized without any difiiculty that the grain removal time is appreciably shorter in the straining tub designed in accordance with the present invention, than that in the prior known devices.
  • the grain removal device In order not to disturb the emergence of the grain from the discharge opening, it is suitable to provide the grain removal device on a shaft inserted from above into the tub and mounted in an overhung manner.
  • the grain removal device can be designed in a different manner.
  • it has at least one carrying arm secured to the drive shaft and extending in radial direction outwardly with a feeding device suspendable in the grain.
  • This feeding device can be formed as a curved grain slat suspended from the carrying arm, in which grain slat each face element of the front side is disposed at an acute angle to its path curve.
  • the curvature of the front side of the grain slat is chosen such, that a substantially equal feeding speed of all face elements radially inwardly is brought about.
  • the feeding device can, however, also, by example, be formed by a multi-part grain slat, the parts of which are disposed at a distance from each other and at an acute angle to its direction of movement.
  • the effect of such feeding can be compared with the effect of the obliquely positioned knives, partly used in the known straining tubs for removing of the grain. It is, for this reason, also possible in the straining tub in accordance with the present invention, to feed the grain by means of obliquely positioned knives of the loosening device towards the central discharge opening.
  • the advantage is brought about relative to the known straining tubs, that the knives for the removal of the grain must all swing in the same direction, which simplifies the drive and the control.
  • the outer knives had to swing in the opposite direction to that of the further inside provided knives, in order to feed the grain to the tub edge inwardly up to the discharge opening.
  • the feeding device can be formed, also, by an endless conveyor belt, which runs over rollers within the range of the inner and othe outer end of the carrying arm, and of which rollers at least one is driven.
  • a heat resistant drive motor can be used for the drive of the rollers.
  • a toothed gear meshing a toothed gear rim of the outer frame of the tub can be provided for the drive of the conveyor band.
  • the carrying arm is arranged between two radial arms of a loosening device, which has a shaft concentrically disposed to the drive shaft.
  • the feeding device Since the feeding device is permitted to be suspended in the grain only during the grain removal process, it can be swingably secured, for instance, to the carrying arm.
  • the drive shaft of the grain removal device is designed, however, as a hollow shaft axially displaceably mounted on the shaft of the loosening device. The grain removal device can be displaced here upwardly to a point, that the feeding device is not suspended in the grain.
  • FIG. 1 is an axial section of a first embodiment of the straining tub, designed in accordance with the present invention
  • FIG. 2 is a section along the lines IIII of FIG. 1;
  • FIG. 3 is a section along the lines III-III of FIG. 1;
  • FIG. 4 is a fragmentary section similar to that shown in FIG. 2 of another embodiment of the present invention.
  • FIG. 5 is a fragmentary longitudinal section of a third embodiment of the straining tub.
  • FIG. 6 is a section along the lines VI-VI of FIG. 5;
  • FIG. 7 is a fragmentary axial section of a variation of the embodiment disclosed in FIG. 5.
  • the loosening device comprises two carriers 4 securtd to the shaft 3 for joint rotation therewith, disposed horizontally and extending diametrically in outward direction, as well as loosening knives 4, which are secured on the carriers 4 spaced apart from each other, and point to the bottom 2.
  • the bottom 2 is equipped with a central opening which coincides with the corresponding opening in the bottom of the straining tub. Both openings form jointly the discharge opening 5.
  • a closing device (not shown), the discharge opening 5 can be closed up.
  • a hub 7 of a grain removing device identified as a unit by the numeral 6, is mounted axially displaceably, but non-rotatably, on the shaft 3.
  • two carrying arms 8 and 9 are secured to the hub 7, which carrying arms 8 and 9 extend at equal height and in diametrical directions radially outwardly up to the neighbourhood of the periphery of the straining tub I and are disposed perpendicularly to the carriers 4.
  • two curved grain slats 10 and 11, respectively which are disposed in a plane parallel to the plane of the bottom 2 and connected by means of obliquely disposed rods 12 and 13, respectively, with the corresponding carrying arms.
  • the inclined position of the rods 12 and 13, respectively, is chosen such, as shown in FIG. 3, that the upper end runs ahead of the lower end, in the direction of rotation indicated by the arrow A.
  • the equally formed grain slats 10 and 11 extend from the periphery of the straining tub I up to the edge of the discharge opening 5 and are curved such, that upon recognition of the different speeds of the individual sections, all sections produce a substantially equal feed speed radially inwardly.
  • the grain removal device 6 While the separation of the wort from the grain and the washing out of the extract remaining in the grain by means of oversprinkling water, the grain removal device 6 is lifted out of the grain and runs idle with the loosening device 4, 4. When thereafter the grain must be removed from the straining tub 1, the grain removing device 6 is lowered, so that the grain slats 10 and 11 are suspended in the grain. Due to their curvature, they feed continuously the grain to the discharge opening 5. Since the grain can enter the discharge opening 5 independently from the momentary position of the grain slats 10 and 11, when they have reached the inner end of the grain slats, the grain is pushed out continuously from the discharge opening, so that the straining tub I is emptied in a comparatively short time period.
  • FIGS. 5-7 these embodiments are distinguished from the embodiments disclosed in FIGS. 1-3 merely by a different design of the grain removal device, for which reason the other parts are no more repeated.
  • the grain removing device has at each carrying arm 108 and 109 a feeding device. Since both feeding devices are equally designed, one only is shown in the drawing and described.
  • the feeding device has two rollers 117 and 118 which are rotatably mounted with a vertical axis at the outer and inner end, respectively, of the carrying arm 108.
  • On the rollers 117 and 118 is arranged, in this embodiment, an endless conveyor band 119 with scrapers 120.
  • the feeding device is driven by a heat resistant driving motor 121, which is arranged on the arm 108 and which drives the roller 117. The direction of rotation of the motor is chosen such, that the conveyor belt 119 runs at its front side from the outside towards the inside.
  • the drive can also take place by means of a toothed gear 122, which meshes a toothed wheel rim 123, when the carrying arm 108' rotates, which toothed wheel rim 123 is provided at the inner wall of the frame 124.
  • the toothed gear 122 drives a bevelled gear 126 by means of a shaft 125, which bevelled gear 126 meshes another bevelled gear 127 mounted on the shaft of the roller 117'.
  • a round straining tub comprising a tub member including a tub bottom defining a discharge opening
  • a grain removing device rotatable about a vertical axis
  • said discharge opening being disposed at about the center of said tub bottom
  • said grain removing device comprising at least one carrying arm secured to a drive shaft and extending outwardly in radial direction and said carrying arm extending outwardly in radial direction and having a conveying device immersable in said grain,
  • said conveying device comprises a curved grain slat suspended from said carrying arm
  • each face element of the front side of said grain slat defining an acute angle to the curve of its path.
  • a round straining tub comprising a tub member including a tub bottom defining a discharge opening
  • a grain removing device rotatable about a vertical axis
  • said discharge opening being disposed at about the center of said tub bottom
  • said grain removing device comprises at least one carrying arm secured to a drive shaft and extending outwardly in radial direction and said carrying arm extending outwardly in radial direction and having a conveying device immersable in said grain.
  • said conveying device comprises an endless conveyor band
  • said carrying arm having rollers within the range of its inner and outer end
  • said endless conveyor band surrounding said rollers and adapted to run about said rollers
  • said driving means comprises an electric motor secured to said carrying arm.
  • a round straining tub comprising a tub member including a tub bottom defining a discharge opening
  • a grain removing device rotatable about a vertical axis
  • said discharge opening being disposed at about the center of said tub bottom
  • said grain removing device comprises at least one carrying arm secured to a drive shaft and extending outwardly in radial direction and said carrying arm extending outwardly in radial direction and having a conveying device immersable in said grain.
  • a loosening device having two radial arms, and wherein said carrying arm is disposed between said radial arms,
  • said loosening device has a shaft disposed concentrically to said drive shaft.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Food Science & Technology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Adjustment And Processing Of Grains (AREA)
US764382A 1967-10-03 1968-10-02 Straining tub Expired - Lifetime US3583875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671642766 DE1642766C3 (de) 1967-10-03 1967-10-03 Läuterbottich

Publications (1)

Publication Number Publication Date
US3583875A true US3583875A (en) 1971-06-08

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ID=5684208

Family Applications (1)

Application Number Title Priority Date Filing Date
US764382A Expired - Lifetime US3583875A (en) 1967-10-03 1968-10-02 Straining tub

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US (1) US3583875A (cs)
BE (1) BE721762A (cs)
FR (1) FR1584859A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3796143A (en) * 1971-12-15 1974-03-12 Miag Muehlenbau & Ind Gmbh Device for the germination and drying of malt
US3811372A (en) * 1971-07-15 1974-05-21 C Lenz Straining vat and process
US4773312A (en) * 1986-11-07 1988-09-27 Anton Steinecker Maschinenfabrik Gmbh Clarifying vat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811372A (en) * 1971-07-15 1974-05-21 C Lenz Straining vat and process
US3796143A (en) * 1971-12-15 1974-03-12 Miag Muehlenbau & Ind Gmbh Device for the germination and drying of malt
US4773312A (en) * 1986-11-07 1988-09-27 Anton Steinecker Maschinenfabrik Gmbh Clarifying vat

Also Published As

Publication number Publication date
BE721762A (cs) 1969-03-14
FR1584859A (cs) 1970-01-02

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