MXPA06008837A - Device for softening grain - Google Patents

Abstract

The invention relates to a device for softening barley. Said device comprises a container (2) for softening barley with a base (4), equipped with passages (6) for conducting water between the underside of the base (4) and the barley to be softened that is in the container (2). A water conduit system that is located below the base (4) is directly connected to the passages in order to conduct water.

Description

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BACKGROUND OF THE INVENTION As is known to the experts, brewing requires that the barley be cleaned and soaked before the malting process, where the barley grains move to more or less an extension in order to germinate. Here it is known to use a so-called soaking cistern provided with a double flat floor. The upper floor of the double floor is perforated there, where the perforated passages are small enough to prevent the barley grains carried from above on the upper floor of the double floor to pass through these perforated passages. The distance between the two floors of the double request is commonly at least approximately 80 cm. While the barley is cleaned and soaked in the known soaking cistern, the barley is introduced into the cistern on the upper floor of the double floor. In the soaking tank, the barley is subjected to a treatment that mainly involves two alternate and repetitive phases. During the first phase the barley is supplied with water via the double floor, where not only the double floor is submerged under water. Also known as the wet soaking phase, this phase typically lasts about 2 to 5 hours. In the second phase that follows the wet soaking phase, which is also known as a dry soaking phase, and which usually lasts for approximately 10 hours, the water is drained from the soaking tank, where the water was above the first floor of the double floor during the wet soaking phase flows through the perforations in the upper floor of the double floor. During the soaking process, the moisture content of the (living) grains increases, thereby accelerating the conversions in the grains necessary to sustain life. In these conversions, the starch compounds are converted enzymatically into water and carbon dioxide, for which purpose oxygen from the environment is additionally needed. During the wet soaking phase, the water is aerated to supply oxygen and expel carbon dioxide. In the wet soaking phase, the air between the grains is revitalized through aeration, which expels the carbon dioxide and supplies the oxygen. An important objection associated with the use of a flat soaking cistern with a double floor is the significant level of water consumption, since the double bottom is necessarily filled with water during the wet soaking phase. The typical quantities that play a role there fill the double floor with approximately 300 m3 of water (finger rule: approximately 0.7 m3 per m2 of surface of the soaking tank), where approximately 450 m3 of water are present above the floor upper of the double floor during the wet soaking phase (finger rule: about 1 m3 per ton of barley). There is only a limited number of options to reduce the height of the double floor, since a minimum height is required to evacuate a sufficient amount of carbon dioxide from the mass of barley grains during the soaking phase. Another important objection associated with the use of known flat soaking cisterns is that cleaning them, when the barley grains are not present in the flat soaking cistern, it is very time consuming and labor-intensive, and there is nevertheless a risk that the contaminants will be left behind, an undesirable prospect given the type of the final product, specifically beer. BRIEF DESCRIPTION OF THE INVENTION The invention now seeks to offer a solution, or at least an improvement, in the group of problems described above. For this purpose, the device according to the invention is characterized in that a network of water lines under the floor is directly adjacent to the passages, in order to pass water through these passages. Using such a network of water lines eliminates the need to use a double floor, which must be filled with water during the wet soaking phase. As a result, significant savings in water consumption can be realized. In order to expand the functionality of the water network, it is preferred that the network of water lines be arranged to divert the water via the passages that start in the barley to be soaked. As an alternative or in combination, it is preferred that the network of water lines be arranged to supply the water via the passages to the barley to be soaked, through the passages that start at the bottom of the floor. To maintain the network of water lines with a relatively simple design, it is desirable to limit the number of passages through which the water is passed from or to the barley to be soaked, making it necessary to provide the passages with a transverse surface that is significantly greater than the transversable surface of the perforation of the passages in the upper floor of the double floor of the flat soaking cistern according to the prior art. In this case, the passages with a transverse surface of at least 50 cm2, and even more than at least 100 cm2 are preferred. In order to now prevent the grains from passing through these passages, the passages will preferably be provided with screening units. The container preferably has a round head shape in the top view, wherein the passages are arranged in radially oriented rows. The advantages associated with this are mainly structural in nature. In order to subject the barley grains in the container to the action of water supplied through the passages, as homogeneously as possible, it is preferred that the passages are distributed on the floor surface in a mainly uniform manner. This general rule could be less applicable or not at all near the edge of the circumference given the deviation behavior near the edges of the circumference of the floor. Furthermore, the advantage of a uniform distribution of the passages on the surface of the floor is that, as will be explained below, if these passages are also used to aerate the barley grains, the barley grains can be activated with a minimum number of barley grains. passages, thereby generating an effect of growth, removal of dirt and compensation of pressure. The barley grains will pass directly through the passages, perpendicularly upwards, while a stream of barley grains flowing downwards is obtained at some radial distance between the passages, for example, at a radial distance of between 30 and 50 centimeters, giving for it a pattern of more or less toroidal movement, where the barley grains are continually put into circulation. This pattern of movement is also known as a recirculation effect. As already mentioned, the number of passages must be limited there, where a compromise must be found between the transversable surface of the passages, the density of the passages in the floor, and the effect of recirculation. The density of the passages in the floor is preferably less than 10, or more preferably less than 5 passages per m2. In order to achieve homogeneous distribution while using the radially oriented rows as effectively as possible, even near the midpoint of the round head shape, it is preferred that the radially oriented, adjacent rows vary in length. It is highly preferred that the network of water lines under the floor be provided with a series of elements of shared water lines, and with elements of branch water lines, between a shared water line element and a passage. This limits the length of the tube required for the water line network. When using rows of radially oriented passages, it is preferred that the shared water line elements are oriented radially, such that the orientations of the rows, passages and elements of shared water lines coincide, and the line elements Intermediate water branches may be essentially uniform in design. It is further preferred that the elements of shared water lines be arranged between two rows of radially oriented, adjacent passages, viewed from above, so that the elements of branch water lines can be connected just next to the passages of the two radially oriented rows, adjacent, at one end, and just next to the same shared water line element at its opposite end. Also in order to limit the length of the tube required for the water line network, it is further preferred that a number of shared water line elements are connected to a main water line element. An important advantage in terms of the simplicity with which the device can be cleaned in the meantime, is achieved by providing a container for cleaning agents, which is connected by a valve of cleaning agents to the network of water lines, so that cleaning agents can be added to the water line network when desired. It should be kept in mind here that the amount of water in the water line system can often contain less than the volume of the double floor of the flat soaking tank according to the prior art. As already mentioned, the last volume usually measures 300 m2, while a typical volume of the interior of the water line system measures 5 m3, in such a way that the application of a container for cleaning agents with which it can be carried out the so-called cleaning process in situ, lies within the sphere of possibilities. It is also true that using a water line system within the water line system allows much higher speeds, which also gives an improved cleaning effect. In addition there are considerable advantages in directly connecting a system of carbon dioxide lines to the passages under the floor, in order to remove the carbon dioxide from the barley to be soaked, by means of these passages. Even though these passages can be related in principle to different passages of the passages used to supply the air from the water line system to the barley to be soaked (where the dimensions and the number of passages for carbon dioxide and the water passages may diverge from each other, if necessary), here it is preferred that the same passages be used to supply (and potentially discharge) the water that was used to evacuate carbon dioxide from the barley mass during the phase of wet soaking. In order to limit the length of the tube needed to make the carbon dioxide line system, this is preferably provided under the floor with a number of shared carbon dioxide line elements and carbon dioxide branch line elements between a shared carbon dioxide line element and a passage. The advantages for a shared carbon dioxide line element and the carbon dioxide branch line element are comparable with the application of the shared water line elements and the water branch line elements. From the same point of view, it is further preferred that a number of shared carbon dioxide line elements be connected to a carbon dioxide main line element. Connecting this carbon dioxide main line element to a vacuum source can generate a reduced pressure within the complete carbon dioxide line system to evacuate the carbon dioxide by means of the corresponding passages. Efficient use of the line elements used is achieved by making the shared water line elements and the shared carbon dioxide line elements are formed at least in part by the same shared line elements. An identical advantage comes into play when the elements of water branch lines and the elements of branch lines of carbon dioxide are formed at least in part by the same branch line elements. The same branch line elements can be used both to supply (and potentially discharge) the water and remove the carbon dioxide, since the supply (or discharge) of the water does not take place simultaneously with the removal of the carbon dioxide. . In order to prevent carbon dioxide from inadvertently entering the main water line elements during the use of the shared line elements, it is preferred that a water valve be provided between the shared line elements and the line element. main water. For a comparable reason, that is, to prevent water from entering the main carbon dioxide line element, it is preferred that the carbon dioxide valves be provided between the shared line elements and the primary dioxide line element. carbon. It is also very preferred that a system of air lines be connected to the passages under the floor, in such a way that the air can be supplied to the barley to be soaked through these passages. As in the case of the carbon dioxide passages, it is also true that the passages for air (or oxygen) can in principle be passages different from the passages for transferring the water, and therefore can also be diverted in terms of the number and dimensions, but that the intended passages for supplying the air to the barley are preferably the same as the passages for transferring the water and / or the passages to remove the carbon dioxide. In order to limit the length of the tube required to make the air line system, the air line system is preferably provided with a number of shared elements of air lines and air line elements between a line element of shared air and a passage. Furthermore, it is preferred within this framework that a number of air line elements are connected to a main air line element. Connecting the main air line element to a compressor or the like makes it possible to perform a high pressure within the air line system in order to supply air to the barley to be soaked. It is preferred that air valves are provided between the shared air line elements and the main air line element, so that air passages can be provided in groups. Here it is advantageous to provide a control system suitable for the individual or group operation of several air valves. In order to remove the contaminants or the like that circulate in the water of the container, it is preferred that the container is provided near its upper side with a rake, in such a way that the elements circulating on the water can be scraped off as much as possible. that the rake slips in a direction of travel along the surface of the water. To facilitate the transfer of undesirable particles, such as contaminants, to the surface of the water in the container, air can be supplied as a stimulus through the air supply passages. Since the rake is only effective directly on its front side, another preferred embodiment of the device according to the invention is characterized in that the control system is suitable for opening one or more air valves located in the direction of travel on the front side of the rake seen from above. BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail based on the description of a preferred embodiment of a soaking device according to the invention with reference to the following figures: Fig. 1 shows a perspective view of a Soaking cistern (partially transparent view); Fig. 2 shows a detailed perspective view of part of the soaking tank according to Fig. 1; Fig. 3 shows a detailed portion of Fig. 2; Fig. 4 shows a top view of a possible distribution pattern of the passages on the floor of the soaking tank according to Fig. 1. DETAILED DESCRIPTION OF THE INVENTION Fig. 1 shows a soaking cistern 1 for soaking barley for the malting process, for example, to brew beer. For example, the soaking cistern 1 can be disposed on the top of a malting tower, which is advantageous from a logistical point of view, since the soaked barley is subjected to the subsequent steps in the malting process after the soaking. The soaking cistern 1 comprises a container in the form of a 2-cylindrical container with a perpendicular wall 3 and a flat floor 4 abutting the underside of this perpendicular wall 3 with a diameter of 24 meters. The container 2 is made to be filled through its open upper side with the barley 5 to be soaked, and also to be filled with water during the wet soaking phase. Located in the center of the container 2 is a cylindrical support 27 with a perpendicular rotational axis 28, central for a bridge 29, which extends between the support 27 and the perpendicular wall 3 of the container 2. Connected to the lower part of the bridge 29, there is a curved rake body 30 provided with a scraping wall 31 located at the level of the surface of the water in the container during the wet soaking phase. Located in the tundish of the body 30 of the rake is a winch 32 for removing the material, moved by the body 30 of the rake from the surface of the water in the container 2 in the direction of the support 27. For this purpose, the support 27 provides with passages (not shown in greater detail) to remove the material through the inside of the support 27. The floor 4 of the container 2 is provided with a number of passages 6 to transmit agents such as water, air / oxygen and carbon dioxide, which play a role in the soaking process. The passages 6 are arranged in radial rows 7 (Fig. 4), which vary in length. In particular, the long rows 7a extend over almost the total radius of the floor 4, and the short rows 7b extend over the outer half of the radius of the floor 4. The passages 6 are located with each other in each radial row 7 separated approximately the same distance. The angle formed by the adjacent rows 7 with each other measures approximately 6 to 7 degrees. The optimum angle depends on the diameter of the floor. This gives a regular pattern of passages 6, where the distribution of the passages 6 on the surface of the floor 4 is uniform. The density of the passages averages about 1 passage per m2 of floor area. The diameter of each passage 6 measures approximately 10 cm. In order to prevent the barley grains from passing through the passages 6, these are provided with sieve material 8. The passages are formed from the upper side of a conical accumulator 9 in the inclined side wall, from which an air branch line 10 is connected, and to which a line 11 is centrally connected branches in the center of the lower side . On the opposite side of the accumulator 9, the air branch line 10 is connected to a shared air line 12, to which the air branch lines 10 belonging to other passages in the same series 7 and an adjacent row 7 are connected. . The combined branch lines belonging to the passages 6 of the same radial rows 7 are connected to a shared combined line on their side opposite the accumulator 9. In the top view, the several shared air lines 12 and the various lines 13 Shared combos are located between two adjacent radial rows. Like the rows 7, the shared air lines 12 and the shared combined lines 13 also extend in a radial direction, wherein the shared air lines 12 are located on the complementary shared combined lines 13. The diameter of the shared combined lines 13 tapers towards the center, so that sufficient pressure can be exerted near the center of the floor when the water is supplied to the passages 6 by means of the shared combined lines 13. On the outside of the container 2, the shared air lines 12 are connected to an annular air main line element 14, which is connected to a compressor 34 to increase the pressure within the air line system, which consists of the element 14 of the main air line, the shared lines 12 and the lines 10 air branches. The air pressure within the air line system can therefore be increased to a pressure that exceeds the static pressure due to the water column (e.g., 0.5 bar or more) in order to supply the air to the barley. through the passages 6. The air valves 23 between the shared air lines 12 and the main air line element 14 must be opened to supply the air.

The exterior of the shared combined lines 13 is connected to a main water line element 15 or a main line element 16 of C02. As with the main air line element 14, the main water line element 15 is annular, and extends all around the periphery of the container 2 on its lower side. In the water line system comprised of the main water line element 15, the shared combined line 13 and the combined branch line 11, water can be supplied via the supply line 17 by opening the water valve 19 and connecting the water valve 20 to the barley by means of the passages 6, while the water can also be discharged by means of the same system of water lines from the container 2 through the passages after closing the water valve 19 and open the water valve 20 via the discharge line 18. The water valves 21 between the shared combined lines 13 and the main water line element 15 must be opened there, while the valves 22 of C02 between the shared combined lines 13 and the main line elements of C02 must be closed. The main water line element 15 is connected to a container 25 by means of the cleaning liquid valves 26. The container 25 contains the cleaning liquid, for example, bleach, which can be supplied to the water in the main water line element 15 with the cleaning liquid valve 26 open. A total of four main line elements 16 of C02 are provided, where each one crosses a quarter of a circumference around the periphery of the container 2. The main line elements of C02 have a growing diameter, wherein a vacuum pump 24 on the side with the largest diameter (see Fig. 1). The action of the fans 24 makes it possible to remove the C02 from the barley via the carbon dioxide line system consisting of four carbon dioxide main line elements 16, the combined combined lines 13 and the combined 11 branch lines. The arrangement of the passages 6 in the floor material 8 of the floor 4 is preferably optimized by means of flow simulation. The 6 'passages are arranged in rows 7 (and 7a, 7b) in the exemplary mode, where these rows are simultaneously designed as a support for the 4th floor, and to unload the floor load. Passage 6 could be arranged between rows 7, however. The main line element 16 of C02 can be arranged as shown in FIG. 1, or closer to floor 4 or to the upper edge of container 2.

In addition to evacuating C02 from barley 5 by means of passages 6 or accumulators 9, compressed air can also be introduced into barley 5 via air line 10. For this purpose, each line connection is provided with a check valve between the air line 10 and the cumulator 9 (not shown explicitly) to prevent the water from penetrating. This improves hygiene. The air strands 10 and the branched lines 11 are preferably of flexible or elastic design. The accumulators 9 form part of the floor 5, and preferably fit like the holes in the screen jacket. The combined lines 13 form an intake and a discharge, while the main line is only used as an intake for the air lines 10. The material 8 of the floor and the sieve in the example, are designed in such a way that the grilles are arranged between rows 7, 7a, 7b and the floor is joined with rows 7, 7a, 7b as a perforated plate with openings of the sieve. The soaking cistern 1 operates as follows: Beginning from an empty state of the container 2, the barley 5 is introduced into the container 2. The water is then supplied to the barley 5 via the water line system, through the passages 5, in such a way that the barley 5 is completely immersed in the water. This state of the wet soaking phase is maintained for several hours, for example, two or three hours. Since the passages are arranged in radial rows 7 and separate air valves 23 are used per row, which can be opened and closed individually by a control system (not shown in great detail at all), it is possible during the phase of wet soaking selectively supplying the rows 7 with air during rotation of the rake body 30 in a rotational direction 33, which proceeds directly from the rake body 30 observing it from above, such that the dirt floats locally in more than one extension, and can be removed via wall 31 of the rake through the winch 32. After the soaking phase, water is again allowed to drain from the container 2 via the passages 6, opening the water valve 20. The barley 5 is then allowed to dry to a certain extent during the so-called dry soaking phase. During this dry soaking phase, which lasts five hours, for example, the barley grains swell and breathe faster, for which purpose the barley grains absorb oxygen, and the barley grains release C02. In order to keep this process going, oxygen is supplied to the barley as part of the air, by means of the oxygen line system, while the barley is evacuated through the fans 24 with the valves 22 C0 open and water valves 21 closed. Combined branch lines 11 and shared, combined lines 13 are both used there to supply and discharge water, and to evacuate C02. The wet soaking phase and the dry soaking phase, described above, can be alternated a few times until the soaking has reached a sufficient level, and the soaked barley is suitable for the malting process. To clean the soaking tank 1, and especially to clean the water line system, this water line system can be rinsed thoroughly with water provided with cleaning liquid from container 25. The type of the line system there it allows the realization of relatively high fluid velocities for the cleaning liquid, so that cleaning can take place effectively, while the necessary amount of cleaning liquid remains limited due to the restricted amount relative to the water line system . The experts will recognize that the passages 6 and mainly their materials 8 and the floor 4 can be exposed to the action of the cleaning liquid in this way, where only a thin layer of cleaning liquid has to be applied to the floor 4 for this purpose . The cleaning efficiency can be further increased by aerating the cleaning liquid, which imparts movement to the cleaning liquid. REFERENCE LIST I Soaking cistern 17 Supply line 2 Container 18 Discharge line 3 Wall 19 Water valve 4 Floor 20 Water valve 5 Barley 21 Water valve 6 Passages 22 C02 valve 7 Row 23 Air valve 7a Long row 24 Pump vacuum 7b Short row 25 Container 8 Strainer material 26 Cleaning liquid valve 9 Accumulator 27 Support 10 Air branch line 28 Rotational shaft II Branch line 29 Jumper 12 Air line 30 Rake body 13 Combined line 31 Scraper wall 14 Line element 32 Main air winch 33 Rotational direction 15 Main line element of water 16 Main line element

Claims (29)

1. CLAIMS 1.
2. A device for soaking or macerating barley, comprising a container for the barley to be soaked, with a floor in which passages are provided to transfer water between the bottom side of the floor and the barley to be soaked in the container, characterized in that, a system (13) of water lines is connected directly to the passages (6) to feed water and / or gases through these passages (6).
3. The device according to claim 1, characterized in that, the water line system is suitable for discharging the water of the barley (5) to be soaked, through the passages (6).
4. The device according to claim 1, characterized in that, the water line system is positioned in such a way that it supplies water to the barley (5) to be soaked, through the passages (6), starting from the lower part of the floor (4).
5. The device according to claim 1, 2, or 3, characterized in that the passages (6) are provided with screens (8).
6. The device according to claim 1 or 4, characterized in that the container (2) has a round shape when viewed from above, wherein the passages (6) are arranged in rows (7, 7a, 7b) oriented radially The device according to claim 5, characterized in that the radially oriented rows (7, 7a, 7b) have a variable length.
7. The device according to any of the preceding claims, characterized in that, the water line system is provided under the floor (4) with a number of shared water line elements and branched or branched water line elements. between a shared water line element and a passage (6).
8. The device according to claim 5 or 6, and according to claim 7, characterized in that the shared water line elements are radially oriented.
9. The device according to claim 8, characterized in that the elements of shared water lines are oriented between two rows (7) oriented radially, adjacent, of passages (6), when viewed from above.
10. The device according to any one of claims 7 to 9, characterized in that a number of shared water line elements are connected to a main water line element.
11. 11. The device according to any of the preceding claims, characterized in that a container for cleaning agents is provided, which is connected by a cleaning agent cutting mechanism connected to the water line system to supply the cleaning agent to the cleaning agent. water line system.
12. The device according to any of the preceding claims, characterized in that, the line system of C02 is connected under the floor (4) directly to the passages (6) to remove the C02 from the barley (5) to be soaked , through these passages (6).
13. The device according to claim 12, characterized in that, the line system of C02 is provided under the floor (4) with a number of elements (16) of shared C02 lines and branch line elements of C02, a element (16) of line of shared C02 and a passage (6).
14. The device according to claim 13, characterized in that a number of shared C0 line elements are connected to a main line element of C02.
15. The device according to claim 6 or a dependent claim and according to claim 13 or claim, characterized in that the shared water line elements and the shared C02 line elements are formed at least in part by the same elements of shared lines.
16. The device according to claim 6 or a dependent claim and according to claim 13 or claim, characterized in that the branch line elements of water and the branch line elements of C02 are formed at least in part by the elements. same elements of branch lines.
17. 17. The device according to claim 9 or a dependent claim and according to claim 15 or dependent claim, characterized in that water cutting valves (19, 20, 21) are provided between the shared line elements and the main water line element.
18. The device according to claim 14 or a dependent claim and according to claim 15, characterized in that, the closing mechanisms (22) of C02 are provided between the shared line elements and the main line element. of C02.
19. 19. The device according to any of the preceding claims, characterized in that, an air line system is connected under the floor (4) to the passages (6), in order to transfer air to the barley (5) to be soaked, through these passages (6).
20. The device according to claim 19, characterized in that the air line system is provided with a number of shared air line elements and branch line elements between a shared air line element and a passage ( 6), preferably under the floor (4).
21. 21. The device according to claim 20, characterized in that a number of shared air line elements is connected to a main air line element (14).
22. 22. The device according to claim 21, characterized in that air valves (23) are provided between the shared air line elements and the main air line element (14).
23. 23. The device according to claim 22, characterized in that, a control system is provided which is suitable for the individual or group operation of several air cutting valves (23).
24. 24. The device according to any of the preceding claims, characterized in that the container (2) is provided near its upper part with a rake in order to scrape or collect the elements that circulate on the water when the body (30). ) of the rake moves in a direction of travel along the surface of the water.
25. 25. The device according to claim 23 and claim 24, characterized in that, the control system is suitable for opening one or a plurality of air cutting valves (23) that are located on the front of the body ( 30) of the rake, seen from above in the direction of travel.
26. 26. The device according to at least any of claims 1 to 25, characterized in that the floor (4) has a partially open gas permeable surface, which constitutes less than 5% of the total surface.
27. 27. The device according to at least one of claims 1 to 26, characterized in that the percentage of the open surface measures less than 3%.
28. 28. The device according to at least one of claims 1 to 27, characterized in that the line systems are staggered.
29. 29. The device according to at least one of claims 1 to 28, characterized in that the line systems are routed outside at or below the level of the floor (4).