DE3200712C2 - Lying container for the treatment of red wine mash - Google Patents

Abstract

The invention relates to a tank-like container (1) for treating wine mash, in particular to a fermentation tank for red wine mash, with an axis that can be rotated about an axis parallel to a longitudinal axis, several agitator blades distributed over the length of the agitator shaft (16) and spaced apart from one another (25, 54) having slow-running agitator. It consists in that at least one, preferably an outer, section (48) of the cross-sectional area of the agitator blades (25, 54) running parallel to the agitator axis (16) is larger than the cross-sectional area at right angles to the agitator axis. The pomace cake floating on the juice is cut up and dipped into the juice through the flat, wide wing sections.

Description

32 OO 712

neither the grape skins nor the grape flesh are broken, and the trub is not released as a result The circular-cylindrical tank shape is also covered / stroked by the agitator.

This also distinguishes the container according to the invention from such tanks, for example the size of a cleaning bucket, like them as laboratory equipment, for example for the production of proteins, use. Such laboratory containers are known from DE-OS 24 54 443 and DE-OS 17 57 319 Although these laboratory containers have so-called "paddle wheel agitators" on, whose agitator arms are also plate-like, these agitators run but at a much higher speed of, for example, 75 revolutions per minute, so that a aerosol-like turbulence of the reaction mixture occurs

With the aerosol-like turbulence or spraying, the largest possible surface area of the reaction mixture is intended to react with air in these laboratory containers. The nutrient solution will consequently converted into a practically foggy state in which as many particles of the nutrient solution as possible can react with air. In addition, such known laboratory containers are used for continuous processes, where nutrient solution and air are constantly supplied and the reaction mixture removed.

After all, the well-known laboratory containers are about three orders of magnitude smaller than the large containers, how they are used in cellar technology.

In embodiments of the invention, the agitator shaft can be arranged centrally in the container, d. H. that the axis of the agitator shaft coincides with the longitudinal axis of the cylindrical container In other embodiments of the invention it can be arranged eccentrically, for example set a little lower be. In this case the distance between the ends of the agitator arms and the inner wall is along the circumference of the agitator different. Since the distance between the ends of the inner wall of the container in the lowest part of the Container and is smallest in the area of the discharge screw, the advantage of this arrangement is the agitator shaft below the longitudinal axis of the container it is particularly pronounced that the agitator moves the pomace into the area of the discharge screw when the container is emptied incorporated.

In this embodiment with the agitator shaft mounted below the longitudinal axis, in Purchase must be made that the distance between the ends of the agitator arms from the container wall in the uppermost Area of the tank is relatively large. On the one hand, when fermenting red wine mash, the container does not become completely full, usually only up to 70%, because the pomace swells up during fermentation and the remaining space to complete. On the other hand, the tresler cake that collects on top of the juice is also broken up into individual pieces Pieces that are pushed down into the juice by the agitator arms when the arms not all the way to the top.

It has already been mentioned that the plate-like agitator arms still have the advantage that they when Empty the tank and feed the contents of the tank to the discharge screw. In addition, the wide agitator arms open up the possibility of widening these arms in the edge area so much that this function of feeding of the tank content to the discharge screw takes place along the entire tank without any gaps. To this end you can in one embodiment of the invention, the free ends of the agitator shaft against each other staggered arranged agitator pan so greatly widened that the ends strung together over extend the full length of the tank.

The wide agitator arms can reach close to the ion wall, with wipers on the ends Made of elastic material, for example made of plastic or rubber, attached to the inner wall issue. In this way, the scrapers scrape the circular cylindrical inner surface of the container, the elasticity of the scraper compensates for the dimensional changes which the container wall suffers from different loads or from temperature fluctuations

Instead of widening the ends of the agitator arms In other embodiments of the invention, the ends of two may be in the direction of the agitator shaft aligned agitator arms be connected by a web, which also has a scraper elastic material that touches the inner wall of the container and carries the pomace located there into the area transported by the discharge screw

In embodiments of the invention, the agitator arms are offset from one another by 180 ° Embodiment, therefore, two of these arms are always exactly diametrically opposite. Are these arms then Connected to one another by the aforementioned webs, the tracks of the scrapers overlap. These Embodiment has the particular advantage that the agitator shaft is placed in such a way for cleaning the container can be that the arms stand vertically upwards or downwards. The arms protruding downwards are located So there is a channel in the area of the drain and a free space follows at its ends. Except the top one The point of the container wall is the entire container wall in this position without obstruction by the Arms freely accessible. In addition, when the grape juice is drained, no solid pomace can build up sit down on the arms and the vertical rest position has the further advantage that after The juice of the pomace cake that has collected above the discharge screw drains off can be broken open or loosened by a slight pendulum movement of the agitator.

The agitator arms can also be offset from one another by a different angle. For example can the arms are offset helically along the agitator axis by a total of 360 °, so in a similar way Arranged in a manner like the steps of a spiral staircase. The advantage of this embodiment of the invention consists in not having several impellers at the same time

so come into contact with the pomace cake, but exert the greatest torque at different times, so that hard knocks on the storage of the agitator shaft are avoided and a drive unit relatively small power can be used for the agitator.

The agitator arms can protrude in the radial direction from the agitator shaft and are arranged straight be or at an angle to the radius standing or kinked or bent to be suitable for The direction of rotation of the mash is also radially inwards, and in some cases also radially outwards to give directional movement.

Embodiments of the invention are shown in the drawing. It shows

Fig. 1 is a front view of a first embodiment of a container;

2 shows a section of the container according to FIG. 1 accordingly the line H-II;

32 OO 712

F i g. 3a and 3b embodiments of agitator blades;

F i g. 4 shows a further embodiment of a container;

F i g. 5 shows an embodiment of an impeller in plan view;

F i g. 6 one of the F i g. 2 corresponding section of another embodiment.

In FIG. 1, which essentially only shows the cross section of the respective container. 1 and 4 are also nor the agitator axes and schematically the agitator circles, i.e. the outermost limitation of the indicated by the agitator

In Fig. 1 and 2 is a container 1 of a substantially circular cylindrical cross-section with a horizontal The longitudinal axis, that is to say lying, is arranged, the support structure supporting the container 1 on the floor contains carrier 2 and supports 3. At the bottom of the circular cylindrical shell 4 of the container 1 is a Over the entire length of the container 1 extending drainage channel 5 is provided in which a discharge or Conveyor screw 6 is arranged, through which the poorly flowable parts of the container contents by an in Extension of the screw conveyor 6 lying outlet nozzle 8 can be conveyed out if only one indicated slide 9 is open. The screw conveyor 6 is at its outlet connection 8 remote end that protrudes beyond the rear wall 10 of the container 11 by a drive device, driven by an electric motor 11 in the exemplary embodiment. The screw conveyor 6 is outside the Circular cylinder which is formed by the jacket 4 over most of its circumference. At the top of the container 1, a filler neck 12 is provided.

In the rear wall 10 and the front wall 15 of the container 1, as a rule in a manner not shown run arched, the shaft 16 of an agitator 17 is mounted, the axis of rotation of the shaft 16 and thus the axis of the agitator 17 extends horizontally and from the axis 20 of the cylindrical shell 4 one Distance, namely the shaft 16 runs exactly below the axis 20. This distance between shaft 16 and axis 20 is chosen so that taking into account the radial dimensions of the agitator 17 in a Zone 22 of the cylindrical shell 4, which is close to the drainage channel 5, a predetermined minimum distance This exists between the part of the agitator 17 which protrudes outwardly most radially and the jacket 4 The minimum distance can depend on the intended use of the container 1 and also that to be expected during manufacture Tolerances and possibly deformations of the shaft 16 to be expected during operation are different be selected, this distance can in particular be in a range of about 5 mm and 150 mm. From this zone 22 upwards, the distance between the radially outermost end of the widens Agitator 17 and the inside of the shell 4 until this distance is in the region of the upper apex of the container 5 has reached its maximum In the example of F ■ g. 1 this distance is in the area of the upper one The apex of the container 1 is approximately 15 to 20% of the diameter of the cylindrical part of the container 1.

The agitator 17 driven by the drive device 27 has several axially on the shaft 16 Spaced agitator arms 25, which all have the same radial length and which are in the circumferential direction the shaft 16 are arranged offset along a helical line.

In the example shown, the helical offset is a total of almost an angle 360 "present, so that in the case of the eight agitator arms 25 provided in the exemplary embodiment a 45 ° rotation of one of the agitator arms 25 points straight up. The more agitator arms on a single such, 360 ° descriptive Helical line are arranged, the more uniform is that of the drive device 27 of the agitator his consistently fast spinning required force when in the upper area of the interior of the container 1 has deposited a relatively solid pomace cake, which the penetration of the agitator arms 25 opposes considerable resistance.

The agitator arms 25 are plate-like, these plates in the exemplary embodiment in FIG. 1 and 2 are flat and the plane of the plates runs parallel to the axial direction of the shaft 16 and radially to this. This shape of the agitator arms 25 is shown in FIG. 1 at a point where the front wall 15 is shown broken off is, indicated in the drawing. It would also be possible and could be advantageous in individual cases to continue to design the agitator arms 25 in the form of plates, they however, to bend or kink at least in their outer end area in the direction of their rotational movement, as shown in FIG. 3a for the agitator arms 28 shown there and in FIG. 3b for the agitator arms shown there 29 is the case. In both figs. 3a and 3b is the direction of rotation of the agitator 17 by an arrow 30 To simplify the drawing, only two agitator arms 28, 29 are shown in these figures shown

Due to the curvature or kink in the end area, these agitator arms 28, 29 a conveyance of the parts of the which come into contact with the outer parts of the agitator arms 28, 29 Container contents in one direction approximately radially inward, so that this in particular the mixing of the Red wine pomace floating on top of the juice can be favored with the juice.

In Fig. 1, the circumferential circle 32 is also drawn in which the outer ends 33 of all agitator arms 25, in the direction of view of FIG. 1 seen, describe. In the case of the in FIG. 4 are no longer the arrangement individual agitator arms shown, but only the circumferential circle 36 of the agitator.

Almost in the lower region of the cylindrical jacket 4 is shown in FIG. 1 to the left of the drainage channel 5 a juice chamber 40 extending over a considerable part of the length of the container 1 in the area

so arranged a recess of the shell 4 The juice chamber 40 has in its interior at a distance from the The cylindrical surface formed by the jacket 4 has a slotted plate 41 which allows the juice to pass through but holds back the pomace. The juice can flow out of the velvet chamber 40 through a drain 42 and be diverted through suitable lines.

In the embodiment shown in Figure 4 the lying container has a circular cross-section at right angles to its axis 20. The agitator shaft is arranged centrally, that is, in the axis 20, the circumferential circle of the agitator is denoted by 36 The discharge screw 6 is provided at the bottom of the container, the agitator blades 25, 28, 29 are at least shorter by the diameter of the discharge screw 6 than the radius of the cylinder jacket-shaped wall 35 of the container.

In embodiments of the invention, the agitator arms are do not screw on the agitator shaft !! -

32 OO

Staggered in a navel shape, but by 180 ° against each other offset. In these embodiments, in particular, two can be in the same angular position arranged on the agitator shaft agitator arms at their outer end by a web be connected.

The agitator arms can also be other than those shown in FIG. 2 have the shape shown. In particular is it is possible to do the things shown in FIG. 2 visible width of the agitator arms 25 essentially only in the end area of the agitator arms 25, but they are narrower in their radially central region 47 (FIG. 5), e.g. B. with round cross-section to be provided. The in FIG. 2 agitator arms 25 shown at their ends Wear parallel to the shaft 16 extending arms or otherwise widened, for example so that their Ends 48 arranged next to one another over the entire length of the cylindrical part of the container 1 extend.

It has already been pointed out that in the embodiment according to FIG. 1 the distance between the ends 33 is lowest from the container wall in zone 22. In the area of this closest approach of the agitator arms 25 on the container wall, these can also strip the inner wall, so that in this zone 22, in which the container wall runs relatively flat, no pomace can settle, but this from the agitator arms 25 are detected and conveyed into the area of the discharge screw 6. The wiping effect the agitator arms 25 can be reinforced by the fact that at the ends 33 at corners between with At the same angle on the shaft 16 attached agitator arms 25 or according to the embodiment according to FIG. 5 wipers 49 made of an elastic Material, for example rubber or plastic, are attached, which slide along the inner wall of the container 1. In these embodiments of the invention, the discharge screw 6, as in FIG. 1 shown in a Drainage channel 5 arranged outside the circumference of the agitator 17 In the embodiment, at which carry the ends 33 wipers, the agitator shaft 16 can be centered in the axis 20 of the container 1 be arranged, in which case the scraper on the entire cylindrical inner surface of the container wall slide along. In other embodiments, the agitator shaft 16 is arranged below the axis 20 as in Fig. 1, the wiping effect is limited in this case to that shown in FIG. 1 drawn Zone 22.

If the agitator 17 only divides the pomace floating on top of the juice and immerses it in the juice should, the agitator 17 at a very slow speed of perhaps one half to twenty Revolutions per minute with an agitator diameter between 1.00 m and 5.00 m. Should that Agitator 17 after or during the removal of the juice, the settling of pomace on flat wall parts prevent or convey such pomace into the area of the discharge screw 6, the agitator 17 driven at a speed of at least ten revolutions per minute.

The container 1 and the parts built into them can be made of steel, in particular of corrosion-resistant steel Stainless steel or a suitable plastic. The front and back walls of the container 1 are made from For reasons of stability, it is designed to be slightly protruding. For the sake of simplicity, this curvature is shown in FIG. 2 not shown

In Fig.6 part of an embodiment is a lying container with curved end faces 52 shown. The drainage channel 50 extends over the junction between the cylindrically shaped part 51 and the curved end face 52 and has a conclusion at its end, e.g. B. a slide o. The like. On. So that in an area 53 at When emptying no pomace settles, the agitator shaft 16 has two possibly two in the area of the curved end face 52. additional agitator arms 54, the front end of which is adapted to the course of the inner wall of the end face 52 and which in turn carries wipers 55 made of elastic material. The end of the scraper on the wall side 55 or the agitator arm 54 runs obliquely to the level of the agitator shaft 16, so that the pomace at corresponding direction of rotation in the direction of the agitator shaft 16 promoted inward into an area up to which the opening 56 leading from the cylindrical part 51 to the drainage channel 50 extends.

In the embodiment according to FIG. 1 is the transition between the side walls of the gutter 5 and the adjacent container wall provided arched. However, in embodiments of the invention the side walls of the drainage channel connected to one another at the bottom by a circular segment-shaped wall piece 5 run approximately vertically and connect to the circular cylindrical jacket 4 with the formation of a corner. These Embodiment is relatively easy to manufacture and very stable because of the corner. Of course all intermediate steps between a sharp corner and a curved transition can also be provided be.

For this purpose 2 sheets of drawings

Claims (13)

32 OO 712 claims: 1. Lying container (1) for treating red wine mash, in particular fermentation tank, with a Agitator (17) in which several agitator shafts (16) parallel to the longitudinal axis of the container (1) are distributed over the length of the agitator shaft (16) and agitator arms (25; 28; 29; 54) arranged at a distance are arranged, characterized in that the container (1) essentially is circular cylindrical and that the agitator arms (25; 28; 29; 54) are plate-like, one to five meters long and with a very slow drive in the range between half a and twenty revolutions per minute are provided. 2. Container according to claim 1, characterized in that a in the lower region of the container Discharge screw (6) is arranged 3. Container according to claim 1 or 2, characterized in that the container (1) has an outside the circular cylinder surface lying drainage channel (5) 4. Container according to claim 3, characterized in that a discharge screw (6) is arranged in the drainage channel (5) 5. Container according to one of claims 1 to 4, characterized in that the cross-sectional areas extending parallel to the agitator axis Agitator arms are widened at the ends (48). 6. Container according to one of the preceding claims, characterized in that the agitator arms (25; 28; 29; 54) extend into the vicinity of the inner wall of the container (1) and at their ends Wear wipers (49,55) made of elastic material that extend up to the inner wall. 7. Container according to one of claims 1 to 3, characterized in that two in the direction of Agitator shaft (16) fleeing agitator arms are connected at their ends by a web, the carries a wiper made of elastic material reaching up to the inner wall 8. Container according to one of the preceding claims, characterized in that the agitator shaft (16) below the axis of symmetry (20) of the container (1) is arranged 9. Container according to one of the preceding claims, characterized in that the agitator arms (54) are arranged offset from one another by 180 °. 10. Container according to one of the preceding claims, characterized in that the agitator arms (28; 29) in the region of their free ends are bent or folded out of the plane of the plate. 11. Container according to one of the preceding claims, characterized in that on the agitator shaft (16) at least one ring-shaped Agitator arm (54) sweeping over section (53) of a curved end face (52) of the container (1) is attached. 12. A container according to claim 11, characterized in that the agitator arm (54) at his front wall end carries a scraper (55). 13. A container according to claim 11 or 12, characterized in that the end wall-side end of the Agitator arm (54) is employed obliquely to a radial plane containing the agitator axis. The invention relates to a horizontal container for the treatment of red wine mash, in particular a fermentation tank, with an agitator, in which several agitator shafts parallel to the longitudinal axis of the container are distributed and distributed over the length of the agitator shaft spaced agitator arms are arranged. Such a container is known from AT-PS 3,26,074 When fermenting red wine mash, a firm pomace cake is formed floating on top of the liquid. It has been found that the wine quality of red wine is improved if the juice has a certain value One is in intimate contact with the marc for a long time Such intermixing has hitherto only been achieved in horizontal, open-topped tanks that a worker pierced the marc cake with a rod or a rake and tried it to press down, but only when the top is open Tanks are possible and, moreover, quite difficult because the marc becomes very firm during fermentation Make floating cakes with the juice. The AT-PS 3 26 074 mentioned at the beginning describes a mash juicing container which is open at the top trapezoidal cross-sectional shape. The known container is therefore not a fermentation tank, but a pure mash juicing container, whose agitator is not referred to as a "beater shaft" to stir, but rather to smash the remaining after draining the grape juice Mash cake is used. As a result, the arms of the racket shaft are rods that are suitable for breaking up a solidified mass and not for making high quality red wine can be used. You would using such a known beater shaft for the treatment of fermenting red wine mash in a fermentation tank, the beater arms would smash both the grape skins and the grape meat and so that sediment can be released to a large extent. Without the addition of chemical agents, there would then not be any more plausible wine, so that the well-known arrangement for the treatment of red wine mash in the so-called "mash fermentation" is ruled out The invention is therefore based on the object of providing a container of the type mentioned at the outset to develop that for the production of high quality red wines an intimate and careful connection between juice and pomace is produced, namely so that both the duration of this mixing and the intensity of the mixing can be precisely metered. This object is achieved according to the invention in that the container is essentially circular-cylindrical is formed and that the agitator arms are plate-like trained, one to five meters long and provided with a very slow drive in the range between half and twenty revolutions per minute are. The invention thus completely solves the underlying problem, because the very firm mash cake, which has formed on the surface of the grape juice after about two hours of standing during the must fermentation, carefully from below with the paddle b5 term agitator arm is lifted and broken into large fragments, which are taken by the agitator arm and just as gently back into the dipped in the grape juice. So be