LU81885A1 - HOT MUST COLLECTION APPARATUS AND SEPARATOR OF TRUB AND EQUIPPED HOPS - Google Patents

Abstract

1. Process for clarifying a warm brewery wort by removing from it the sludge and spent hops which it contains, in which process the warm wort is introduced in the upper part of a first tank serving as a decanter with an inclined bottom, having a capacity at least equal to the volume of a mashtub, and, whilst the sludge and spent hops are allowed to descend as a result of gravity towards the inclined bottom of the said first tank, clarified wort is drawn off from this first tank via a first pipe having a free end floating permanently on the surface of the wort contained in the first tank, characterized in that, during the time when clarified wort is being drawn off from the first tank, acting as a decanter, via the first aforesaid pipe, the sludge and spent hops are allowed to settle in a second tank serving as a collector, having a capacity equal to 2 to 5 % of that of the first thank, by keeping open a valve located in a second pipe connecting the first tank to the second tank, the valve mounted in the second aforesaid pipe is then closed, and the rest of the clarified wort is drawn off from the first tank via the bottom of the latter.

Description

ΙΓ 1678

----GRAND DUCHY OF LUXEMBOURG

* - * 818 8 H ^ du ..14. ~ Aoveïübre - 1979 - · - '* Monsieur the Minister of National Economy and the Middle Classes

Title issued: ........................................

Industrial Property Service

ψΈΰΖ ^ LUXEMBOURG

; Jy ßf / ü request for Patent of invention I. Request --Ls - eoeiéÊê-4i £ eî "- GC" !! PAfiSÎE- "ÏKT-EEHâTïGîîAiil" "î®" "PÂR, i: i € Î £ ATiON • ET-D ^ ïNWiSTïS “'·· (1) -SE ^ IÏT - ÏÏC®Al ^ î - S ^^ - 4 ^^ 4 * - 4Uv“ ead ”ee - Ir — LÎÏ2EK & OBB. G ...................-............................. .................

-rep "es-eatée ™ pat-Moasi-eur - A, ..... Z-eweR> - irigï '~ eoFiSeîl - en - prop-ri & téiî'éusfcriellej ® --agie & an-t --- ea ~~ quali-6é ~ 4e- "maadat-ai-re ................................... .....................----------------------------- ---------------------------------------------------------- ------- "deposit this - ^ uatorze --a © venibre ·· 490Ö ·" sixty "nineteen · .................... ........................— ® at ...... 1,500 ........... hours, at the Ministry of National Economy and the Middle Classes, in Luxembourg:; 1. the present request for obtaining a patent for an invention concerning: 1 y 'iAppareil-eelleeÈeur-d "·· aerSt ~ eiiaud-et" S € parateiir "' Tto''tiiifa '' '' and" ideB ~! iöubions ..........

! · .. „sold out®" ------------------------------------------- ---------------------------------------------------------- ---------------------------------------------------------- ---------------------------------------------------------- ------------ declares, assuming responsibility for this declaration, that the inventor (s) is (are): •• 1 & Η®1βΗΓ ^^ Γό · -Εΐ ^ 8ΰ4 ·· 08 ^ Α ^ ···· ΒΕΛ ^ υΧν ···· 'Κα6 ···· Βηί · 5ΚβΓεΐ ·· 6ϋ · ν''Β “7θ0 ^ ··· Μ0Νδ ^ -------- ------- (5). Belgium -------------------------------------- ---------------------------------------------------------- ---------------------------------------------------------- ---------------------------------------------------------- ------------ ί 2. the delegation of power, dated - .. Luxesbouïr-g · ..................... ....... le - B · ••• aeïrfâBÈrre 497? ----------- S. description in language ..... fFStCS-ise · ------- ------------------------------- of the invention in two copies; 4. ......... ..... 1 ............. drawing boards, in two copies; 5. the receipt of the taxes paid to the Bureau de l'Enre registration in Luxembourg, on ...... l4-aug-vember - lS-79 ............................. ........................................-......... .................................................. .................................................. ................................

claims for the above patent application the priority of one (s) request (s) of (6) ........................... .................................... / ............. .................. filed® in (7) ............. j ............ ............................-..................... .................................................. ......

the ................................................. .................................................. ................. / ................................ .................................................. .................................................. ..................... (8) on behalf of ....................... .................................................. .................. / ............................... .................................................. ........ — .............-.......................-... ............ (9) elect domicile for him / her and, if appointed, for their proxy, in Luxembourg ................. .......................

... 4.s ..... piace .... 1Kias-tos ^ Ch.u's; c'h: ill-i - Lmemb © urg .............. .................................................. .................................................. ............. (10) requests the grant of a patent for the invention for the subject described and represented in the abovementioned appendices, - with postponement of this grant to ..... ................. g ..................... months.

jf The ....... ~ .s £ E | sfe-siïr - & -............................. ...........

* Ι jf1 IL Procès-verbal de Dépôt • The above-mentioned patent application has been filed with the Ministry of National Economy and Medium Clashes, Industrial Property Service in Luxembourg, on: —Li, —gc .RL.3-- ~ -. j. g vn ........ ^ Pr, the Minister at _____........ hours ·· 'National Economy / and of the Middle Classes.

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dd DESCRIPTIVE MEMORY

filed in support of an application for

j PATENT OF INVENTION

j in the name of PI the so-called company: â i COMPAGNIE INTERNATIONALE DE PARTICI- rj Λ j PATION ET D'INVESTISSEMENT "CIPARI" S.A.

I for: | ί "Collector of hot wort and separator of trub and hops' i | exhausted." Έ | i laughed

The present invention relates to a process and to an apparatus used to collect hot wort in a brewery and to separate the trub and the spent hops from this wort.

The invention relates to a process and an apparatus of an extremely simple design making it possible to eliminate, between the boiling and cooling phases of the must, during the manufacture of Mère, the trub and the spent hops, this process and this device being arranged to allow the recovery of the must 1 soaking the exhausted hops and avoiding pollution j of waste water.

S Several processes and apparatuses are known I making it possible to eliminate the trub and the exhausted hop from hot musts.

A first known method involves decantation î in a hot wort tank followed by sieving in a second tank fitted with a sieve. The exhausted hops contained in i 1 the hot wort introduced into this tank is retained by the sieve.

g I while the trub settles on the bottom of the hot wort tank I? Although this known method and apparatus is relatively inexpensive, it requires considerable labor to drain the spent hops and the trub. In addition, the rejection of exhausted hops i and trub poses a significant pollution problem.

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In addition, it is necessary, for economic reasons, to recover the wort which soaks the hops by washing it, while a significant loss of wort takes place in the trub, from which this wort is inseparable by decantation.

A second known method involves filtration of the spent hops in a tank fitted with a sieve and separation of the trub by centrifugation.

This process therefore requires the use of a "filtration tank and a centrifuge, the wort, freed from the spent hops in the filtration tank, being brought into a centrifuge where the trub is separated. The apparatus to be used in this second known method requires a very high investment and significant maintenance costs for the centrifuge, while it does not prevent significant pollution when the spent hops and the trub are rejected.

Finally, there is a third process known as "Whirlpool" in which the hot wort is introduced tangentially in a cylindrical tank in which this wort is subjected to a rotary movement, the spent hops and the trub being collected in the center of the bottom of the cylindrical tank. This third process also requires significant manpower for monitoring the process and emptying the tank. The exhausted hops and the trub cause a significant loss of wort which can only be recovered by adding it to the tank. of an additional settling tank i. In any case, the Whirlpool process causes very high pollution of the waste water. In addition, the operation of the apparatus is random and the process is slow, i because it takes almost two and a half hours to separate the exhausted hops and the trub from a single brew.

The subject of the present invention is a method and an apparatus offering, compared to known methods and * apparatuses, the following advantages: - acceptable cost of the apparatus; - no manpower to ensure the operation of the device; - zero pollution of wastewater; ! - substantially complete recovery of the must and | a little isohumulone; '- fast and safe operation of the device allowing the processing of fourteen brews | per day.

The process according to the invention for collecting | h hot brewery wort and to separate the trub and the exhausted hops is essentially characterized in that hot wort is introduced at the top of a first tank with a large capacity inclined bottom which is in communication with the atmosphere and is connected to a second tank at the bottom also inclined of small capacity by a first conduit provided with a normally open valve, until the two tanks are appreciably filled, the must is withdrawn from the first tank by a second leads i; i! whose free end floats permanently to the; surface of the liquid contained in the first tank, while the trub and the exhausted hops are allowed to sink, by gravity, to the bottom of the first

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tank and go through the aforementioned first conduit

In the second tank, the withdrawal of the wort from the first tank is interrupted by the aforementioned second conduit when the trub and the hops are exhausted f | have been collected in the second tank, 4 the remainder of the must contained in the first tank is drawn off by the bottom of the latter closing the valve provided • 7 | in the aforementioned first conduit and the trub i is evacuated | and the hop exhausted from the second tank while the valve provided in the first pipe is closed.

i | In a particular embodiment I of the process according to the invention, the remainder 1 of the wort is drawn off from the first reservoir by a third conduit] provided with a valve and connected to the first aforementioned conduit 1 upstream of the valve with which this first conduit.

î Preferably, the withdrawal of wort from the first tank is interrupted by the second conduit at the end I If floating and the withdrawal of the wort remaining \ in this first tank is initiated by the bottom thereof, when the level of the liquid contained in this first f I reservoir reaches a predetermined level.

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The apparatus according to the invention for implementing the method described above comprises, in essential order, a first tank with an inclined bottom - of large capacity which has, at its upper part, an inlet for hot must and communication with the atmosphere, a second tank also with a small capacity inclined bottom, a J first conduit provided with a normally open valve I; connecting the bottom of the first tank to the part (upper of the second tank, a first wort withdrawal device arranged to draw wort from the first tank from the upper level of the wort contained in this first tank until: 4 d neighborhood from the bottom of the latter and a second device Ί 1 for withdrawing the remainder of the wort from the bottom of the first] reservoir, when the exhausted hop and trub have been '4 i brought by gravity through the aforementioned first conduit 1 - ·] in the second tank.

The first device for withdrawing the wort preferably comprises a first pipe, one of which i * 'l | . free end is permanently maintained by a float at the level of the must contained in the first tank, the opposite end of which is articulated to a second pipe fitted with a valve and a pump; . while the second drawing-off device comprises a third pipe provided with a valve connecting the aforementioned second pipe to the pipe connecting the bottom of the tank.-1 of large capacity at the top of the small capacity tank, upstream of the valve with which this conduit is provided.

The two tanks provided in the device according to the invention have different capacities.

Thus, the first tank has a capacity slightly greater than the volume of a brew, while the second | * tank has a capacity between approximately 2% i I „and 5% of the capacity of the first tank.

| * The first tank, which is preferably • 1 placed above the second tank, although the ί two tanks can be placed side by side, i to Ί is advantageously provided with means interrupting the | f operation of the first racking device, • Λ \ when the free surface of the must contained in this | first tank has gone down to a level i | predetermined in this tank.

ïl | Other particularities and details of the invention will emerge from the following description of an embodiment of the method and of the apparatus 1 * | according to the invention, chosen by way of example only.

! | In this description, reference is made f l to the single figure (FIG. 1) of the attached drawing g g | _ which is a schematic elevational view of a 5 s device according to the invention.

? j I The apparatus shown in the drawing includes | j a first large capacity tank designated by? j i f f rr 1; j reference notation 2. In the embodiment I shown, this first tank consists of a cylindrical part 3 and a conical bottom 4. Instead of being cylindro-conical, the tank 2 can be conical or pyramidal or may have any inclined bottom. This first tank is closed at its upper part by a cap 5 in the center of which opens a tube 6 ensuring communication between the inside of the tank 2 and the outside atmosphere.

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In the vicinity of its upper part, the tank 2 is provided with a wort inlet pipe 7 which may be in the form of a T.

i Tank 2 is a large tank! capacity suitable for collecting hot wort from an entire brew. The capacity of the tank 2 can be equal to the volume of a mash of wort increased by about 10 ^, this additional volume being intended to contain the foams.

Below the first tank 2 and coaxial with it is mounted a second small capacity tank 8, which is intended to collect by gravity the trub and the spent hops suspended in the hot must introduced into the upper tank 2. Instead of being below the first tank 2, the second tank 8 can be located next to it, it being understood that the level of the second tank 8 must be lower than that of the first tank 2, in order to allow \ gravity precipitation of trub and hops | exhausted in the bottom of the first tank 2 and * \ collect this trub and this hop with a minimum of j J wort in the second tank 8. The latter has a capacity i ij lower than that of the first tank 2,] j | t this capacity can be between approximately 2% f | and 5% of that of this first tank 2.

I - I The first tank 2 is connected to the second i * tank 8 by a pipe 9 provided with a normally open valve 10.

In the first large capacity tank 2 is mounted a first withdrawal device of | hot wort 11 consisting of a pipe 12 shown in broken lines in the drawing, this pipe being provided at its free open end 13 with a float | shown schematically at 14. The opposite end 15 of the pipe 12; is articulated in 1 to a fixed pipe 17 provided with a normally open valve 18 and a pump 19 for the evacuation of the must. By pivoting around the articulation 16, the free end 13 of the pipe 12 follows a circular trajectory shown diagrammatically by the line in broken lines 20, this free end 13 v descending in the direction of arrow X, following the trajectory 20, as the wort freed from the trub and the exhausted hops is withdrawn from the tank 2 by said free end 13 of the floating pipe 12!

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S on the free surface 21 of the liquid mass contained in this tank 2.

* The tank 2 is provided with a probe 22,

Ide so that when the free end 13 of the pipe 12 reaches a predetermined level, this probe | 22 ensures the closure of the valve 18, which interrupts the withdrawal of the must by the first dispo-j sitive withdrawal 11; the electrical control of the I 1.1 valve 18 by the probe 22 is shown diagrammatically by the line! · In phantom 23.

It should be noted that when filling the | tank 2 by a new wort mash, the probe 22 controls the opening of the valve 18 and thus ensures the immediate start-up of the first wort withdrawal device 11, as soon as the tank 2 is filled with hot wort.

I During the drawing off of wort by the first drawing device 11, the trub and the hops

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I exhausted therein descend by gravity to the bottom of the first tank 2 and pass into the second tank 8 through the pipe 9, the valve 10 of which is open.

*! When the probe 22 interrupts the sou mS i, 1 * draft of the wort by the first withdrawal device: ¾

Il1, the trub and the hops were almost completely brought into the second tank 8. At this time,? probe 22 ensures the commissioning of a second

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Λ - must withdrawal device 24 which comprises a pipe 25 provided with a valve 26, this pipe 25 being; connected, on the one hand, to the evacuation pipe of μ must 17 and, on the other hand, to the pipe 9, upstream I 'of the valve 10 with which this pipe 9 is provided. The probe 22 j; i also ensures, at this time, the closing of the valve 10, so that the remainder of the clarified wort being in the large capacity tank 2 can be: '· evacuated by the pipe 25 and the pipe 17.

; * The opening and closing of the valves 10, 18 and 26 are electrically controlled (as shown · 'by the broken lines 23) by the probe 22.

The second small capacity tank 8! '! j · serving as a trub collector and exhausted hops j; presents, like the first tank 2, a bottom

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(conical 27 into which opens a pipe 28 used for the evacuation of the trub and the spent hops. This pipe 28 e provided with a normally closed valve 29 and is connected to a pipe 30 in which is mounted a pump 31, this pipe 30 by feeding a filter press or a filter of another type i (not shown) where the residual wort will be recovered.

if the second reservoir 8 has a domed cover i] 32 into which opens a pipe 33 provided with a valve 34, this assembly serving as an air vent, i An adjustable probe 35 can be provided in the second '• il ® I tank 8, this probe being able to control electrically! only, as shown by the dashed line 36 'y- - Ü - | 1 the closing of the valve 34 of the trap when the mass of trub and the exhausted hops reaches a predetermined level in the collecting tank 8.

1 Furthermore, a second probe 37 can be provided in the second tank 8. This second probe 37 controls the entry of a compressed gas, such as compressed air, into the second tank. So, ! * I when the mass of trub and exhausted hops reaches! : a second predetermined level in the tank 8, this second level being greater than the first level detected by the probe 35, the probe 37 electrically controls (as shown by the dashed line] 38) a valve 39 mounted in a pipe 40 connected , &? j on the one hand, to a source of compressed gas (not shown) j and opening, on the other hand, into the tank 8. The compressed gas under pressure of me equal, for example, to 1.5 bar, is used when it is allowed in the reservoir 8, to maintain there the free surface of the mass of trub and spent hops at a constant level.

In the case where the second tank 8 is equipped with probes 35 and 37, the pipe 9 is extended! by me part 41 which extends in this tank 8 to a level lower than that of the probe 35.

s The device described above may include: ’in addition, in tanks 2 and 8, devices 42, such as sprinklers or spray bars, for cleaning said tanks. These - 12 -! .1: i

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. 'Jj devices 42 are connected to a source of cleaning liquid P not shown and the cleaning liquid; i is evacuated by a pipe 43 connected, on the one hand, ji I to the pipe 28 downstream of the valve 29 of this pipe and, on the other hand, to the must drain pipe 17, | by lover of the pump 19 with which this pipe 17 is provided.

| v To drain the cleaning liquid, | a valve 44 provided in the pipe 30 upstream of the i ·.

ij pump 31 is closed, while the valve 29 of the pipe 28 1 * \ and a valve 45 of the pipe 43 are open.

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i The device described above operates as i following.

h j The boiling wort leaving the boiling boiler (not shown) is pumped to the upper part of the apparatus, the valve 10 connecting the two tanks 2 and 8 being open, while | all other valves are closed. The must therefore fills the two tanks 2 and 8.

ÿ i Immediately after pumping the wort, we! * begins to draw off the must with the first | racking 11. The trub and the exhausted hops descend j j into the bottom of the tank 2, pass the valve 10 and I descend into the lower tank 8. After l *! at least half an hour of withdrawal, and this, either il - * automatically thanks to the level probe 22, or i manually, the valve 18 for drawing off the floating tube 12 and the valve 10 for separation between the tanks 2 are closed and 8 and we open the drain valve

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I lower 26 connected to the "pipe 9 containing the Λ valve 10 for separation between the two tanks 2 and 8. The withdrawal therefore continues through the" bottom of the upper tank 2..

s From this moment until filling | from the upper tank 2 by the following brew, the trub and the exhausted hops are available for i be pumped to a filtration tank or the filter press (not shown).

If, for any reason, the reservoirs 2 and 8 are not placed one on top of the other but side by side, the separation takes place in two j episodes. After decantation in tank j: main 2, the precipitate is pushed or pumped into secondary tank 8.

It is obvious that the invention is not limited to the particular embodiment described.

Here above, nor to the details of this embodiment, many modifications can be made to it | without departing from the scope of the invention.

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Claims (20)

1. Apparatus according to either of the claims 8 to 12, characterized in that the first tank is provided with means interrupting the operation of the first wort withdrawal device, when _ ir _ iji the free surface of the must contained in this first tank is lowered to a predetermined level in this tank, 1. Method for collecting hot wort j j g from a brewery and for separating the spent trub and hop S therefrom, characterized in that wort is introduced! hot at the top of a first tank | large capacity inclined bottom which is in communication with the atmosphere and is connected to a second tank also a small capacity inclined bottom by a first conduit fitted with a normally open valve, until the two tanks are substantially filled, the wort is drawn from the first tank through a second conduit, the free end of which r floats permanently on the surface of the liquid contained in the first tank, while! that the trub and the exhausted hops are allowed to descend, by gravity, to the bottom of the first reservoir and to pass through the first aforementioned conduit into the second reservoir, the withdrawal of the wort from the first reservoir is interrupted by the second conduit above when the trub and the exhausted hops have been collected in the second tank, the rest of the moûb contained in the first tank is withdrawn from the bottom of the latter by closing the valve provided in the above-mentioned first duct and the trub is removed and the = * hop exhausted from the second tank while the valve provided in the first pipe is closed. - 15 - | η .1 3 1 claims i j 2. Method according to claim 1, N | characterized in that au1on draws off the rest of the must! of the first reservoir by a third conduit provided with a valve k and connected to the aforementioned first conduit '1 \ upstream of the valve with which this first conduit is provided, v 3 · Method according to one or the other of claims J dications 1 and 2, characterized in that J interrupts the drawing off of wort from the first tank by the! second conduit with a floating end and the withdrawal of the wort remaining in this first reservoir ij is initiated by the bottom thereof, when the level of the liquid f contained in this first reservoir reaches a predetermined level 1. ï 4. Process according to either of the res? j previous dications, characterized in that i evacuates the trub and the exhausted hops from the second tank per i ‘opening of a valve provided in a fourth conduit connected to the bottom of this second tank. 5. Method according to one or other of the resales? above, characterized in that the above-mentioned second tank is placed in communication with the atmosphere. 6. Method according to either of the preceding claims, characterized in that compressed air is admitted into the aforementioned second tank, 5 in order to maintain a constant level there, after interruption of the communication between the interior | I from the second tank and atmospheric air. .î 7. Method according to either of the preceding claims, characterized in that> a first tank is used having a capacity slightly greater than the volume of a brew and a second tank having a capacity between j 3 approximately 2% and 5% of that of the first tank, 8. Apparatus for collecting hot wort from the brewery and for separating the trub and the hops from it | exhausted, characterized in that it comprises a first large-capacity inclined bottom tank which has, at its upper part, an inlet for hot must? and communication with the atmosphere, a second | tank also inclined bottom of small capacity, j | tin first conduit fitted with a valve normally | open connecting the bottom of the first tank to the upper part of the second tank, a first | wort racking device designed for racking! of the wort of the first tank from the upper level of the wort contained in this first tank! 'to the vicinity of the bottom thereof and a second device for withdrawing the remainder of the must from the bottom of the first tank, when the trub and the spent hops have been brought by gravity through the first aforementioned conduit into the second tank. ! = 9. Apparatus according to claim 8, f j characterized in that the first withdrawal device! . i? j-i »r. ä of the wort comprises a first pipe, one free end of which is permanently maintained by a float at the level of the wort contained in the first tank |; and the opposite end of which is hinged to one; 5 second pipe provided with a valve and a pump, while J the second withdrawal device comprises a -¾ 1 ^ third pipe provided with a valve connecting the aforementioned second pipe to the pipe connecting the bottom of the large capacity tank at the upper part of the small capacity tank I, upstream of the valve with which i - „.. | ij this pipe is fitted. ùj 10. Apparatus according to either of | 3 vi claims 8 and 9, characterized in that the first! .T j It tank has a capacity slightly greater than J volume of a brew, while the second tank Ί '-N || has a capacity between approximately 2¾ and 5% of J. the capacity of the first tank. , 1 11. Apparatus according to either of claims 8 to 10, characterized in that the first 1. reservoir has a conical or pyramidal bottom, 10. Apparatus according to either of claims 8 and 9? characterized in that the first tank {has a capacity slightly greater than the volume of a brew, while the second tank | has a capacity between approximately 2p and 5% of | the capacity of the first tank. 6 th 11. Apparatus according to one or other of claims 8 to 10, characterized in that the first "tank has a conical or pyramidal bottom. 12. Apparatus according to either of claims 8 to 11, characterized in that the second tank has a conical or pyramidal bottom. 12. Apparatus according to one or other of I claims 8 to 11, characterized in that the second I tank has a conical or pyramidal bottom. b / he 13- Device according to one or other of t; S "y, || = "Claims 8 to 12, characterized in that the first [.;" *** | tank is provided with means interrupting the operation of the first must draw-off device, when z ü _ Ί P. _ i ί A ί i of the wort comprises a first pipe, one free end of which is permanently maintained by a float at the level of the wort contained in the first tank and the opposite end of which is articulated to a second pipe fitted with a valve and a pump, while the second drawing-off device comprises a ^ third pipe provided with a valve connecting the aforementioned second pipe to the pipe connecting the bottom of the large capacity tank I to the upper part of the small capacity tank [g "| upstream of the valve with which this conduit is fitted. 14. Apparatus according to claim 13, Î; characterized in that the aforementioned means cause the closure of the valve provided in the conduit connecting iI the bottom of the first tank to the upper part II of the second tank and the opening of the second device [1 * ° <] for withdrawing the must. .L ·, 1 15. Device according to either of the i! * Claims 8 to 14, characterized in that a conduit y · H provided with a valve is connected to the bottom of the second tank N, [; | to evacuate the trub and the exhausted hops from this second tank. 16. Apparatus according to one or other of J claims 8 to 15, characterized in that the second J .I tank is provided in its upper part with a device I to put it in communication with the atmosphere. 17. Apparatus according to either of Claims 8 to 16, characterized in that the second tank is provided in its upper part with a device enabling it to be put in communication with a source of a compressed gas serving to maintain · - * 3 I * a predetermined level in this second tank. Îj 5 18. Apparatus according to either of claims I and 16, 17, characterized in that the second tank J comprises means for interrupting the communication between this tank and atmospheric air. as to 1 iii Il - 19 - f 'ύ i IJ 1¾ (. ·· (V i' \ i U ij when the exhausted trub and hops reach the first predetermined level in this second reservoir - 1 &. see, as well as means for admitting compressed air to a second predetermined level of the spent trub or hops in the second tank, if 19 · Device according to one of the other 11 · | claims 8 to 18, characterized in that the! small capacity tank is located below | of the large capacity tank. he 20. Apparatus according to any of claims 8 to 19, characterized in that it is | fitted with tank lifting devices. h i * i «i - i f * a |