DE8900649U1 - Rotating feed device for the sparging water in lauter tuns for wort production in beer production - Google Patents

Description

931

Bernhard Lenz, 8710 Kitzingen August Lenz, 8710 Kitzingen

Description

Rotating feed device for the scouring water in wort vats for wort production in beer production

The innovation relates to a rotatable feed device for the sparging water in lauter tuns for wort production in beer production, whereby the lauter tun contains a rotatably mounted, drivable chopping device with at least &1 horizontal support for a row of chopping knives, by means of which the spent grain that settles on the sieve bottom of the lauter tun during a lautering process can be loosened.

In lauter tuns used to extract wort for beer production, the solid components of the mash are separated from the liquid components. The solid components form the so-called mash on the sieve bottom of the lauter tun.

Spent grain cake, which becomes increasingly dense during the wort clarification process, which is accompanied by a steadily decreasing wort yield. To obtain further wort, the spent grain cake is then repeatedly loosened using a rotating chopping device built into the lauter tun. After each wort batch has been clarified, or even during this process, so-called sparging water is sprayed onto the spent grain cake in order to obtain an additional rinsing or leaching effect, which optimizes the wort yield. It is known to supply this sparging water via spray nozzles, which are usually arranged on a pipe ring that is attached to the cover of the lauter tun. The disadvantage of this system is that the spray nozzles are located at a relatively large distance above the spent grain cake, which means that the spraying sparging water carries a relatively large amount of atmospheric oxygen along with it and introduces it into the loosened spent grain cake, which in turn has a negative effect on the quality of the filtered wort. The above disadvantage also applies to a known rotating feed device for sparging water, which is located above

) the chopping device and according to the principle

of the "Segnert water wheel". It could also be added that this rotating feed device is relatively

\ is prone to failure and works with only low water pressure,

which is suitable for the high

&igr; Lautering speeds are insufficient. The low

Water pressure at which the known device works, is also the reason why this device

■ Completion of a refining process practically not

Spraying out the lauter tun to clean it

suitable 1st.

Furthermore, since in the two systems explained above the The water from its exit from the nozzles to the Impact on the spent grain cake a relatively long distance

1n an air-filled room, the

Danger that incorrect spraying of

cold sparging water In the hot lauter tun a

Vacuum formed which led to the destruction of the cover of the Practice shows that

Such damage has occurred several times before.

The innovation is based on the task of remedying the above deficiencies

and a rotating feed device for the

To create a slurry of water through which the introduction

of atmospheric oxygen into the spent grain cake via the

Swelling water is reduced to a minimum and the

also after each lautering process for spraying or

Cleaning the LluterbottIch can be used. The The facility is also designed for high lautering speeds

suitable and the latent state of the art

Danger of vacuum formation above the spent grain cake ₌

exclude the possibility of accidentally introducing cold slack water into the lauter tun which is at high temperature.

6According to the innovation, the above task is solved by .;i

3) the supply device for the pre-stir-fed water I

■with at least one« of the chopping blade support arms f of the chopping device and via a :'

central coupling is connected to a flexible water supply line and

b) the feed device for the pre-sweetening water has downward-directed spray nozzles or outlets for the pre-sweetening water distributed along the chopping knife support arm(s).

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when loosening the spent grain cake, the distance between the spray nozzles or outlets for the slaking water arranged on the support arms and pointing downwards to the top of the spent grain cake is also correspondingly small. This means that the slaking water is sprayed close to the spent grain cake and the amount of atmospheric oxygen carried along by the slaking water is reduced to a minimum. If cold slaking water is accidentally introduced, the risk of 1m of space above the

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Furthermore, since the new feed device for the scouring water works with normal water pressure, it can also be used to spray out or clean the scouring tub after each scouring process. As a result of the only minimal supply of atmospheric oxygen through the scouring water into the spent grain cake, a higher quality of the product is achieved compared to the state of the art. Finally, high scouring speeds can be used.

Advantageous embodiments of the innovation are evident from the protection claims 2-4. In such a design, the chopping blade support arms with the

Pipelines connected to a central coupling are attached through which the flushing water can be fed to the spray nozzles or outlets. It is possible to not only run these pipes along the outside of the supports, but also to accommodate them in their cavities.

According to a further development of the innovation, the chopping device's pipe-based support frames can form part of the scavenging water supply device, through which the scavenging water can be supplied to the spray nozzles or outlets. In this case, the cost-effectiveness of the innovative solution is increased by eliminating additional pipes.

Preferably, the spray nozzles or outlets for the slurry water are arranged on right-angled, T-shaped or T-shaped support elements, e.g. pipe sections, which are attached to the pipelines or chopper support frames, whereby a horizontal part of the pipe sections overlaps the respective chopper support frame or protrudes to the side and the slurry water can be fed to the pipe sections either via the hollow spaces of the chopper support frames or through the separate pipelines. This arrangement of the spray nozzles or outlets for the slurry water makes it possible for the slurry water to be supplied to the pipe sections either via the hollow spaces of the chopper support frames or through the separate pipelines. deep adjustment of the rotation plane of the chopper carriers, in which they can also come into contact with a liquid layer over the spent grain cake, the spray nozzles or outlets for the

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The sparging water is still kept at a sufficient safety distance from the top of this layer and cannot be blocked by spent grain particles when they circulate with the support arms in the lauter tun.

The innovation is then explained using a drawing of an example implementation. Shown are:

Figure 1 is a schematic sectional view of a lauter tun with two versions of the innovative feed device for the sparging water;

Figure 2 shows a cross-section of a chopping knife support arm with a part of a chopping knife and a right-angled pipe section arranged on the support arm, which has a spray nozzle for the sparging water at the free end,

Figure 3 shows a cross-section similar to Fig. 2

however, there are two opposite right-angled pipe sections, each of which has a spray nozzle for the sparging water at its free end and

Fig-jr 4 another cross section of a

Chopping blade support arm (left part of Fig.1) ■with a right-angled pipe section attached directly to the support arm, which has a spray nozzle for the scavenging water at the free end.

The lauter tun 10 has a circular floor plan and

has a base 11 and a cover dome 12. Ia

Distance from lauter tun bottom 11 to the top is

the sieve bottom 13. Such lauter tuns are used for the

The wort is used in beer production.

The mash introduced into the lauter tun 10 for this purpose is evenly distributed by a rotating chopping device 14. Depending on the size of the lauter tun 10, the chopping device 14 can have two or more horizontal support arms 16 for a row of chopping knives 15 extending downwards towards the sieve bottom 13. In Fig. 1, only two chopping knives 15 are shown as an example on each support arm 16. The chopping device 14 is set in rotation by a vertical drive shaft 17 which is rotatably mounted in a central stand 18 and extends through the sieve bottom 13 and lauter tun bottom 11 downwards to a drive (not shown). This drive is used not only to rotate the

Wave 17, but can also raise and lower it. j During a lautering process, the '.'

Chopping knife 15 of the rotating chopping device 14 a loosening of the spent grain layer 19, which forms on the sieve bottom 13 after a certain time during lautering. Between the sieve bottom 13 and the Jj

At the lauter tun bottom 11 there is a collecting chamber 20 ;

for the wort flowing out through the sieve bottom 13, dl* from ' ^: the collecting space 20 can flow out through an opening not shown via a pipe.

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In order to increase the wort yield, so-called sparging water is sprayed onto the spent grain layer or the spent grain cake 19 after filtering out certain wort portions or at the same time. For this purpose, in the embodiment, a row of spray nozzles 21 for the sparging water are arranged on each whetstone support arm 16, directed downwards, i.e. towards the spent grain layer 19.

In Fig. 1, each chopper support arm 16 is assigned five such spray nozzles 21, just as an example. The spray nozzles 21 are attached to the free end of right-angled pipe pieces 22, as shown in the right-hand part of Fig. 1 and Fig. 2, which in turn are attached to a pipe 24. The pipe 24 is firmly attached, e.g. welded, to a chopper support arm 16 by means of vertical webs 23.

In the embodiment according to Fig. 3, two pipe sections

22 with a spray nozzle 21 each opposite the pipe 24, which is the same as the Exemplary embodiment according to Fig. 2 By means of vertical webs

23 attached to a hacksaw tragam 16 1st.

The horizontal parts of the right-angled pipe sections 22 protrude so far from their spray nozzles 21 that the ⁴ jets of flushing water can pass downwards at the side of the hacksaw support arms 16. The spray nozzles 21 are supplied with flushing water via the pipe sections 22 and the pipes 24 connected to them. The pipes 24 on the hacksaw support arms 16 are connected at one end to bent pipes 25.

which are connected at their other ends to a central coupling 26, which is only schematically indicated in Fig. 1. The scavenging water is fed to the central coupling 26 via a flexible supply line 27, which is designed in such a way that the scavenging water can flow to the spray nozzles 21 via the pipes 25 and 24 when the raking device 14 rotates.

However, the innovation is not limited to the embodiment shown in Fig. 1, right part, with regard to the supply of the sparging water to the spray nozzles 21. For example, the sparging tank supports 16 consisting of pipes can also be used directly for the supply of the sparging water (shown in the left part of Fig. 1). In this case, the inner surface of the sparging tank supports 16 is in flow connection with the pipe sections 22 (Fig. 4) carrying the spray nozzles 21, which are attached to the supports 16. Furthermore, in deviation from the embodiment according to Figs. 1-3, the pipes 24 can also be guided directly along the supports 16 and connected to the pipe sections 22 in a flow-related manner. In Fig. 1 two variants of the spray nozzle arrangement are shown together; in practice, however, only one can be used per lauter tun.

The innovative connection of the spray nozzles 21 for the slurry water to the chopper tank carriers 16 achieves several advantages. On the one hand, the path of the water jets emerging from the spray nozzles 21

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b-»s to hit the top of the spent grain layer 19 is relatively short and only a hint of atmospheric oxygen is introduced into the spent grain layer 19 by the water jets. At the same time, the rotating spray nozzles 21 distributed over the support arms 16 of the chopping device 14 achieve an intensive, large-area spraying of the spent grain layer 1, whereby the rinsing or leaching effect is further improved by the scouring water. Finally, after the completion of a lautering process and the removal of the spent grain layer 19 from the lauter tun 10, cleaning water can also be introduced into the lauter tun 10 through the spray nozzles 21, also with the chopping device 14 rotating, whereby the lauter tun 10 is thoroughly cleaned of solid and liquid mash residues.

Regarding the embodiment according to Fig. 4, it should also be noted that the pipe sections 22 can also be arranged in pairs opposite one another on the hacksaw support 16 (similar to the pipe 24 in Fig. 3).

Claims (4)

♦ · lit · · t · • «ti· t . t t ··· • · II« til 11 Protection claims 1. Rotatable feed device for the sparging water in lauter tuns for sparging water in beer production, where the lauter tun has a rotatable two horizontal support arms for a series of chopping blades, by means of which the spent grain that settles on the sieve bottom of the lauter tun during a venting process can be loosened, characterized in that a) the feed device (21 - 25) for the tailing water is connected to at least one of the chopping blade support arms (16) of the chopping device (14) and via a central coupling (26) to a flexible sparging water supply line (27) connected 1st and b) the feed device (21 - 25) for the sparging water has downward-directed spray nozzles (21) or outlets for the sparging water distributed along the chopping knife support arm(s) (16). 2. Feeding device according to claim 1, characterized in that pipes (24 - 25) connected to the central coupling (26) are attached to the chopper support yarns (16), through which the tailing water can be fed to the spray nozzles (21) or outlets. 3. Feeding device according to claim 1 , characterized in that the chopping knife carriers (16) of the chopping device (14), which consist of tubes, form part of the scavenging water feeding device through which the scavenging water can be fed to the spray nozzles (21) or outlets. 4. Feeding device according to one of claims 1-3/ characterized in that the spray nozzles (21) or outlets for the sintering water are arranged on right-angled/ T-shaped or similar support elements, e.g. pipe sections (22) which are attached to the pipelines (24) or chopper support cords (16)/ and that a horizontal part of the pipe sections (22) is Spray nozzles (21) or omit the respective Chopper carrier* (16) Top grip/or side grip cantilevered/ whereby the quenching water flows to the pipe sections (22) either via the hollow space of the Hackeesser-Tragaree (16) or by the separate Pipelines (24) can be fed 1st.