WO2015117739A1

WO2015117739A1 - Method and device for mixing and metering solid materials to be metered into a carrier liquid

Info

Publication number: WO2015117739A1
Application number: PCT/EP2015/000175
Authority: WO
Inventors: Wolfgang SCHLÖSSER; Ludger LÜTKE SUNDERHAUS; Jürgen GEHLING; Erwin Süthold; Uwe Schwenzow
Original assignee: Gea Tds Gmbh
Priority date: 2014-02-05
Filing date: 2015-01-29
Publication date: 2015-08-13
Also published as: PH12016501565A1; DE102014001574B4; EP3102318A1; CN106457172A; CN106457172B; PH12020500251A1; DE102014001574A1; EP3102318B1

Abstract

The invention relates to a method for mixing and metering solid materials (Z, B) to be metered, such as at least one cereal (Z), in particular a solid, particulate, swellable cereal (Z), and/or at least one other small-size addition (B), into a carrier liquid (TF), wherein a mixture (G) of the carrier liquid (TF) and the at least one solid material (Z, B) to be metered is produced using said method. The invention also relates to a device for carrying out the method. According to the proposed method, this is achieved in that each of the at least one solid material (Z, B) to be metered is formed as a constant volumetric flow rate of the at least one solid material (Q*) to be metered, and the volumetric flow rate of air (Q_L), when seen in the flow direction of the provided volume (V), encounters the constant volumetric flow rate of the at least one solid material (Q*) to be metered such that the volumetric flow rate of air (Q_L) functions as a mixing, drying, discharging, and carrier medium for the at least one solid material (Z, B) to be metered.

Description

Method and device for mixing and dosing solid doses into a carrier liquid

TECHNICAL AREA

The invention relates to a method for mixing and dosing solid doses, such as at least one cereal, in particular a solid-like, particulate, swellable cereal, and / or at least one other small admixture, in a carrier liquid with which a mixture of the carrier liquid and the at least one solid dosage material is produced, in which a volume of carrier liquid and the at least one solid Dosiergut respectively fed forcibly in stationary operation and all mixing components are mixed together in a stationary volume of the mixture, in which the mixture with a constant volume flow mixture steadily and forcibly from the volume presented is removed, in which the presented volume, which has a free level, regulated by this free level and thus kept constant, in which the volume flow carrier liquid and optionally a volume flow of air kept constant and steady and continuously provided and in each case quantitatively presettable and can be changed within limits, in which the volume flow carrier liquid is introduced below the free level in the mixture, that in this flow-mechanically a rotational flow is generated, in which the supply of at least one solid metered respectively quantitatively presettable and can be changed within limits and in which the at least one solid dosage material is first combined with the volume flow of air and then introduced in the respective mixture over the free level in the submitted volume. The invention further relates to a device for carrying out the method. The mixture is at the end of its further treatment in a metering downstream process plant to a drinkable mixture, preferably consisting of drinking milk as a carrier liquid and the at least one solid Dosiergut, such as rice or / and oats as Zerealie / n, prepared by application of the method and the device according to the invention. Drinkable mixture means in the present case that these are not in spoonable or spoon-solid consistency must be consumed, but can be easily absorbed with a straw or drinking straw. In addition to rice and oats, the term cereals should also include, for example, wheat grains that are only watered with cold water, as well as other solids-like, small-sized admixtures such as fruits, nuts or seeds. Solid-like should be considered a cereal or admixture, if it is not destroyed by heat or mechanical action in the treatment process and thus, for example, largely retains its grain structure. The term "small piece" is intended to quantify a cereal or admixture which is still perceptible with a minimum amount when drinking (for example seeds or the like with a largest particle diameter of 1 to 2 mm) or which can still be drinkable with a maximum particle size of not more than 5 mm is, especially with a straw or drinking straw.

STATE OF THE ART

An apparatus for carrying out the method of the generic type is known from DE 38 03 217 A1. It discloses a device for mixing and dosing solid and liquid doses, such as powders, granules or the like. In water and liquid dosing, such as dispersions, emulsions, with difficult-to-mix properties with water. The device has a mixing reactor chamber, wherein the metered goods are introduced by means of air in the closed, pressurized mixing reactor chamber and a distance air cushion between the water and the Dosiergut is maintained. The forced metering of the metered goods via a metering device in which a driven ball is arranged, in which three blind holes are incorporated, whose positions are arranged to overlap a solids inlet and a solids outlet. The metering device has a connection for a ventilation line and the mixing reactor chamber has a connection for a supply line, is supplied via the air and thus the solids dosage is conveyed into the mixing reactor chamber. It is a quasi-portioned entry of the solid in a space in the metering device, which also air is supplied. In which way, after the solid has been introduced into the metering device, is mixed with the air supplied via the vent line and then further treated on the way to exit from the metering device is not disclosed. The portionwise delimitation of, for example, moist rice grains in blind holes and their subsequent emptying by gravity alone does not seem suitable for metering a dosing material of this kind safely and with the necessary quantity-proportional accuracy into a carrier liquid.

DE 602 18 450 T2 relates to the dissolution of powder in water, wherein a water stream is used in conjunction with a jet apparatus to suck the powder and convey it into a stirred tank. The latter is divided by a plurality of transverse to the longitudinal axis of the container baffles arranged in superimposed chambers, which are each connected by a central opening. Through the central openings extends a stirrer shaft, which drives an impeller in each chamber. Powder should also be understood to mean swellable particulate material in water.

DE 602 23 586 T2 relates to a product made from cereals, the nature of a cereal being specified in terms of color, shape and outer and inner coating.

In addition, methods and devices are known which, with a higher proportion of cereals, serve to produce a highly viscous end product, for example a rice or a rice / oat dessert, which can only be consumed as a spoon or spoon.

Preferably, in Asian countries, drinkable mixtures of drinking milk as carrier liquid and rice and / or oats as cereal (s) are desired. It is further desirable in this regard that the cereals added to the carrier liquid, for example rice and / or oats, do not completely dissolve, but rather that their lumpiness, as uniformly distributed and isolated as possible, remains palpable when they are being consumed. This requirement also relates to other small-sized admixtures that can be accommodated in the carrier liquid. In the preparation of a drinkable mixture, for example consisting of drinking milk and oats and / or rice, is aimed at on the one hand the oats in a native state, namely cold and dry, can be dosed into the carrier liquid drinking milk, and on the other hand, the use of so-called. "Allerweltsreis" In the context of the above problem, rice of general-purpose variety is defined as a rice which has different cooking and sterilizing behavior, depending on variety, origin and natural crop-related fluctuations The rice grains thus pretreated are of sticky consistency and tend to conglomerate with other rice grains, resulting in their quantitatively even dosage into the carrier liquid and its uniform distribution in this problematic. Known methods and devices are so far limited to produce a spoonable or spoon-solid, highly viscous mixture of a low-viscosity milk as a carrier liquid and rice cereal only under the condition when the rice content, based on the drinking milk content, well above 6 percent by weight , As the proportion of rice increases, a higher viscosity of the mixture is formed, which at the same time makes it possible to continuously convey this mixture, and ultimately the desired product, through and out of the process plant. This requires a different technology than that described in the present invention. However, if the rice content is to be less than 6% and possibly less, because a drinkable, relatively low viscosity mixture thereof is desired, then the present dosing methods and devices will fail.

It is an object of the present invention to provide a method and an apparatus for mixing and dosing solid doses, such as at least one cereal, in particular a solid-like, particulate, swellable cereal, and / or at least one other small amount of admixture, into a carrier liquid through which the proportion of at least one solid Dosierguts in If necessary, the carrier liquid can be increased beyond the level previously achieved in the prior art and, at the same time, trouble-free supply of the at least one solid dosing material into the carrier liquid and its homogenous uniform distribution therein can be ensured. With the method and the device for mixing and dosing a mixture are to be produced, the final result to a drinkable mixture of drinking milk as a carrier liquid and a relatively high proportion of, for example, rice and / or oats and / or wheat grains as cereals / n and / or other small-sized admixtures, such as fruits, nuts, seeds or the like., Leads.

SUMMARY OF THE INVENTION

This object is achieved by a method having the features of claim 1. Advantageous embodiments of the method are the subject of the subclaims. An apparatus for performing the method according to the invention is the subject of the independent claim 10. Advantageous embodiments of the device are the subject of the associated subclaims. Furthermore, mixtures are given, which can be produced by using the method according to the invention and by means of the device according to the invention.

method

The inventive idea is, and the inventive solution manifests itself most obvious in the most difficult task, namely the dosage of the pre-cooked rice grains in the carrier liquid, which is exemplified below, starting from a method of the generic type that the at least one solid Dosing, for example cereal rice, in each case in the form of a continuous volume flow of at least one solid dosage material is pronounced, and that the volume flow of air, seen in the flow direction to the volume presented, to the continuous volume flow of at least one solid metered material strikes such that the volume flow of air acts as a mixing, drying, discharge and carrier medium for the respective at least one solid dosage material. The mixture thus prepared is then introduced over the free level in the initial volume. In this case, the air velocity given by the volume flow of air is dimensioned in relation to a feed rate of the at least one solid metering material so that the air promotes and intensifies the mixing and moreover functions as a carrier and discharge medium for the respective at least one solid metered product. If the at least one solid dosage material is a cereal in the form of a moist, pre-cooked rice, the air, which is significantly colder than the rice, causes the rice grains to dry in addition to their carrier function and thus counteract adhesion and conglomerate of the rice grains ,

The abovementioned solubility characteristics in connection with the cereal rice dosage are analogously also applicable to other cereals or other solid-like, small-particle admixtures, if comparable behavior, such as adhesion and conglomeration, occurs here. In the following, to simplify the description under the term cereal also admixtures of the type described above are subsumed.

In addition to the above-mentioned inventive steps, the volume flow of carrier liquid and a volume flow of air are kept constant in a manner known per se and provided continuously and continuously. The volumetric flow mixture is also forcibly discharged from the initially introduced volume at a constant volumetric flow rate and is continuously pronounced over the entire duration of the production time of the mixture and thus of the final result of the production process, a drinkable mixture which can be filled or stored. This ensures a clearly defined discharge of the mixture from the volume presented and at the same time an approximately constant and steady flow, seen in the direction of flow, in the volume presented subordinate areas of further treatment of the mixture reaches as free as possible from stagnant and / or uncontrolled oscillating flow areas. Furthermore, it is provided in a manner known per se that the presented volume of the mixture, which has a free level, is regulated above this level and thus kept constant. Via this free level, the at least one solid dosing material, the cereal to be dosed, preferably enters the carrier liquid, whereby a trouble-free dosing is conveyed.

It is also known and provided that the volume flow carrier liquid and optionally a volume flow of air and the supply of at least one solid dosage material are each quantitatively presettable and can be changed within limits. The presettableness of these sizes makes it possible to set the proportion of the at least one solid metered material to a desired quantitative value. The variability makes it possible under changing operating conditions, e.g. in the event of fluctuations in the volume flows, to adjust the desired and / or required residence time. Safety and reliability of the mixing and dosing process are improved if the at least one solid dosage material is forcibly supplied.

In order to intensify the mixing of the at least one solid dosage material into and the mixing process in the carrier liquid, the carrier liquid is introduced in a manner known per se into the mixture in such a way that a rotational flow is generated in it by flow mechanics. By the rotational flow centrifugal forces are generated, which lead to secondary flows and thus to additional secondary stirring and mixing movements in the submitted volume of the mixture.

The above procedural steps ensure that the respectively metered at least one solid dosage remains a clearly defined mean residence time in the volume presented and mixed there according to this average residence time together with the supplied carrier liquid and the vorge set volume mixture and evenly distributed in this mixture becomes. Since the residence time is defined as the quotient of the volume presented and the volume of air passing through it, the planned volume and the volume flows entering the volume presented are planned kept constant and provided continuously and continuously and continue the forcibly evacuated from the volume presented volume flow mixture is also kept constant and steadily pronounced, the residence time is clearly defined and constant in trouble-free dosing. The dosing conditions are therefore clearly defined, reproducible at any time and constant in scheduled and trouble-free operation.

In addition, the invention provides that the presented volume of the mixture can be preset within limits.

An essential feature of the invention is that the supplied air serves as a mixing, carrier and discharge medium and optionally additionally as a drying medium for the metered and optionally moist at least one solid Dosiergut. The introduced from top to bottom in the direction of volume presented air flow additionally prevents that rising from the carrier liquid vapors (hot steam) reaches the point of merging the volume flow of at least one solid dosing with the flow of air and there in its initial state in the Usually relatively dry dosing material glued. It has been found to be advantageous if, in the area of merging the volume flows of air and of the at least one solid metered material, an air speed given by the volume flow of air is larger by a factor of 50 to 100 than a supply speed given by the volume flow of the at least one solid metered metering material. In concrete terms, this means that, for example, the air is supplied at an air speed of 5 to 6 m / s and the at least one solid dosing with a feed rate of 0.05 to 0.1 m / s, so that the combined volume flow of air and Dosiergut is characterized by an entry speed which corresponds approximately to the airspeed. In the case of a dry and non-sticky at least one solid dosage material, a cereal such as, for example, cold and dry oats, it may be possible to dispense with the supply of air. In this regard, the invention Permitted method that the at least one solid Dosiergut is introduced without admixing air in the submitted volume.

It has also proven to be advantageous if the dosing at least one dosing divided into more than one volume flow and is introduced separately from each other in the submitted volume. On the one hand, a simultaneous metering of several and different solid metered goods into the carrier liquid can be realized, on the other hand this process variant increases the reliability and safety of the metering process when metering only a single solid metering material, because the registration surface of the presented volume inevitably increased accordingly.

In order to enhance the mixing effect in the presented volume, it is further proposed to provide mechanically generated relevant movements in addition to the flow-mechanically generated stirring and mixing movements. Another reinforcing effect in this respect arises when the flow-mechanically generated rotational flow is oriented in the opposite direction to the mechanically generated rotating stirring and mixing movement.

use

The proposed method is particularly suitable for the preparation of a mixture consisting of a drinking milk as a carrier liquid and at least cereal oats or rice or wheat grains, prepared by the method according to one of claims 1 to 9. The necessary properties of oats and Rice has already been partially defined above, it being advantageous to use the oats as a grain and not pre-cooked and dosed so natively, cold and dry. The rice is used pre-cooked and dosed warm at 70 ° C and preferably under laminar aeration. The wheat grains are dosed only pretreated by washing in cold water. device

The device for carrying out the method according to the invention is designed as a metering device and consistently implements the procedural solution features into representational features. The metering device is usually arranged in a UHT (UHT: ultra-high temperature) system and is usually located between a preheating zone and a preheater zone with a subsequent high-temperature zone, a holding zone and a cooling zone, in the latter the end product, a drinkable mixture prepared from the mixture by UHT treatment, cooled to the filling or storage temperature.

The metering device is formed in a conventional manner with a container for a presented volume of a mixture having a free level. The container has an inlet connection for a carrier liquid below the free level for generating a rotational flow in the container, an inlet opening for at least one solid dosing material and an outlet connection for the mixture consisting of the carrier liquid and the at least one solid dosage. The container has a level control device for the free level and it has a pre-chamber, which opens via an inlet opening in a headspace located above the free level of the container. The prechamber has a connection for supplying the at least one solid dosing material and a connection for air for supplying a volumetric flow of air in each case into the prechamber. In addition to the generic features, the metering device according to the invention has at least one prechamber with the connection for supplying the at least one solid metered material, which is set up such that the at least one solid metered material enters the prechamber in the form of a steady volume flow of the at least one solid metered material. At the at least one pre-chamber, the above-mentioned connection and the connection for air are arranged such that the volume flow of air, after leaving the connection for air and on the way to the inlet opening of the container, to the continuous volume flow of the at least one fixed Dosing material meets and thereby as Durchmi- schungs, drying, discharge and carrier medium for the respective at least one solid Dosiergut acts. In addition, a mechanical stirring device is provided in the container. In order to prevent the container on the one hand crowded and on the other hand is drained too far, so on the one hand, the necessary residence time is too long or too short and on the other hand, the container either overflows or empty, it has a third connection for an upper level limit detection device and a fourth terminal for a lower level limit detecting device.

To increase the safety and reliability of the dosing process, it is expedient for the container to have more than one pre-chamber, preferably four pre-chambers opening into its head space via an associated inlet opening in each case. In this context, it is provided that the at least one inlet opening or, if appropriate, more than one of these inlet openings is or are arranged in a container lid delimiting the head of the container. As a result, the respective at least one dosing material, a cereal and / or other small-sized admixture conveyed via the air flow into the head space can be introduced into the latter over as large a surface as possible of the free level of the mixture.

Foaming during the feeding of the carrier liquid into the mixture is avoided and the stirring and mixing movement in the mixture is additionally intensified if, as a further proposal, the inlet connection for the supply of the carrier liquid at the circumference and in the tangential direction to Scope of the container is arranged.

A trouble-free and clog-free removal of the mixture from the container is facilitated by an embodiment in which the container in its foot region of a conical bottom with a first cone angle and then extending to the outlet port for the discharge of the mixture towards conical taper neck with a second cone angle is limited, wherein the first cone angle is made significantly larger than the second cone angle.

In order to ensure a clearly defined removal of the mixture from the container and at the same time also to achieve an approximately constant and steady flow, as seen in the direction of flow, into the areas of the UHT system downstream of the container, which is as free as possible of stagnant and / or uncontrolled oscillating flow ranges, provides another proposal that directly at the outlet port of the container, a positive displacement pump, preferably a rotary positive displacement pump in the form of a screw-spindle pump is arranged.

In order that the supplied carrier air and possibly other gases and vapors released from the at least one solid dosing material or the heated mixture escape from the head space of the container or the latter at a decreasing level, e.g. can be vented during emptying or level fluctuations, a ventilation device is connected to the headspace of the container.

Perfect and automatic CIP (cleaning in place) cleaning of the dosing device (CIP) is possible if the container has a container cleaning device that engages in its headspace. In order to be able to intensively and safely subject the antechamber to automatic CIP cleaning, a further proposal provides that the prechamber has a chamber cleaning device engaging in it.

use

The proposed device is particularly suitable for the preparation of a mixture of drinking milk as a carrier liquid and rice and / or oats or wheat grains cereal / s and / or at least one other solid-like, small-sized admixture such as nuts, fruits, seeds or the like, prepared by means of the device according to any one of claims 10 to 19. BRIEF DESCRIPTION OF THE DRAWINGS

A more detailed description of the invention will become apparent from the following description and the accompanying drawings of the drawings and from the claims. While the invention is implemented in various embodiments, in the drawing, a preferred embodiment of the apparatus with which the inventive method is feasible, presented and described below for structure and function. It shows a perspective view of an external view of the metering device according to the invention with four arranged on the container lid prechambers and

in a schematic, simplified representation of a meridian section through the metering device according to FIG. 1

DETAILED DESCRIPTION

device

A metering device 100 (FIGS. 1 and 2) is, for example, arranged downstream of the last heat exchanger of a preheating zone of a UHT installation, viewed in the flow direction of a carrier liquid TF. The carrier liquid TF flows with a volume flow of carrier liquid Q _T F with an inlet velocity CTF via an inlet connection 16 into a container 2 of the dosing device 100, wherein the inlet connection 16 preferably at the periphery and in the tangential direction to the periphery of the container 2 and below a liquid level of a mixture G stored in the container 2, characterized by the carrier liquid TF and at least one solid dosage material Z, B, for example at least one solid-like, particulate, swellable cereal Z, is arranged. Instead of the at least one cereal Z, it can also be at least one other small-size additive B (not shown in the figures of the drawing). The container 2 forms an interior for receiving the mixture G, wherein a submitted volume V of the mixture G is to be limited by the free level N with respect to a head space 5 of the container 2. The container 2 is above its Headspace 5 by a container lid 4 and limited in its foot by a conical bottom 6 with a first cone angle W1 and a subsequent conical taper neck 8 with a second cone angle W2. The first cone angle W1 is made larger than the second cone angle W2, and it is advantageous if the cone angle W1 is slightly less than three times as large as the cone angle W2. The taper neck 8 opens into an outlet port 18 for the mixture G, to which a positive displacement pump 48, preferably in the form of a screw-spindle pump, is arranged directly. The mixture G is discharged from the container 2 with a volume flow mixture Q _G and a discharge rate CG. The container 2 further comprises at least one inlet opening 34 for the at least one solid dosage Z, B, in the embodiment, the cereal Z, and / or the at least one other small-sized admixture B (not labeled), wherein the inlet opening 34 the is preferably arranged in the container lid 4.

At least one pre-chamber 50 is provided on the container 2, which opens via the at least one inlet opening 34 in the headspace 5 located above the free level N. The pre-chamber 50 has a connection 54 for supplying a volume flow of the at least one solid metered product Q ^* , the volume flow cereal Qz and / or a volume flow admixture Q _B (not designated), and a connection for air 56 for supplying a volume flow air Q _L. About the port 54, the prechamber 50 with at least one solid metered Z, B and the connection for air 56, the pre-chamber 50 can be acted upon with air L. The connection for air 56 is arranged such that the volume flow of air QL on the way to the inlet opening 34 meets the volume flow of the at least one solid metered product Q ^* , the volume flow cereal Qz or the volume flow admixture Q _B. From the volume flow air Q _L results with a passage cross section of the prechamber 50 there for a preferably dry, relatively cold air L an air speed c _L , and the cereal Z or admixture B is under the given cross-sectional ratios with a feed rate Cz and CB fed. Is, - by an inventively selected relationship between flow rate air QL and flow cereal Q _Z or admixture QB or between air velocity CL and feed rate Cz or CB, which is preferably from 50 to 100 (100 c _L / cz = CL / CB = 50) the air L acts as a mixing, carrier and discharge medium for the cereal Z or admixture B, so that a mixture of cereal and air Z + L or admixture and air B + L with a volume flow cereal and air Q _Z + L resp Volume flow admixture and air Q _B + L and an entry speed CZ + L or CB + L from the antechamber 50 via the inlet opening 34 into the headspace 5 occurs.

In the container 2, a level control device 38 is provided, which engages over a preferably arranged in the container lid 4 second port 26 in the free level N and serves to control its. Furthermore, the container 2 engages, preferably in each case again via the container lid 4, via a first connection 24 an agitating device 36, via a third connection 28 an upper level limit detection device 40 and via a fifth connection 32 a container cleaning device 44, wherein the agitator 36 extends far into the presented volume V. Preferably also on the container lid 4 there is a ventilation device 20 via which a generally warm, moist first air L * and possibly other gas or vapor components are removed. A condensate k, which optionally separates from the first air L *, is discharged via a connected to the ventilation device 20 overflow pipe 22 in the vicinity of the container 2 as well as a then correspondingly dehumidified second air L ^** . In the bottom 6, a lower level limit detection device 42 engages in the foot region of the container 2 via a fourth connection 30.

With the container cleaning device 44, in a cleaning step, a first cleaning liquid C1 is discharged into the entire interior of the container 2 when it is completely emptied of the mixture G. A secure and targeted cleaning of the pre-chamber 50 is ensured by a chamber cleaning device 46, which via a connection for chamber cleaning 58 at a chamber lid 52 of the prechamber 50 is inserted into the latter, and over which a second cleaning liquid C2 is applied in the cleaning step.

The container 2 preferably rests on a support frame 14 which is preferably supported by three legs on a substrate, it has a manhole 10 for inspection and maintenance work in its interior, and it is equipped with a plurality, preferably three, sight glasses 12, which are preferably distributed in a vertical arrangement over a lateral surface of the container 2. In the exemplary embodiment, the container 2 has four prechambers 50 opening into its head space 5 via an associated inlet opening 34 in each case. Either different cereals Z and / or admixtures B can be simultaneously introduced into the initially introduced volume V or partial streams of identical or different cereals Z and / or admixtures B either simultaneously via these prechambers 50.

The cereal Z may preferably be rice R and here preferably a "world rice" or oats H or wheat grains W (not designated) Rice R and oats H are the carrier liquid TF, preferably a drinking milk M, exclusively (G = TF + R; G = TF + H) or, in each case separately, but in total (G = TF + H + R) in the desired ratio metered in. The oat H is preferably in the form of grain, not pre-cooked and native , dosed cold and dry, while the rice R is pre-cooked and dosed at 70 ° C. and under the ventilation according to the invention The wheat grains W, only pretreated by dehydration in cold water, dosed in the mixture G and thus at the end a heat treatment reaches a drinkable product with a proportion Zerealie (n) Z, based on the carrier fluid TF, of 4% and more.

The dry and generally relatively cold air L in relation to the cereal Z functions on the one hand as a mixing, carrier and delivery medium for the cereal Z and on the other hand causes drying, in particular with warm, moist preformed rice R, drying as the drying medium Gluing and conglomerating rice grains prevented. With the air flow, the cereals Z are blown to the free level N, penetrate over the entire surface of the free level N in the submitted volume V of the mixture G and are uniformly distributed there with continuous supply of an associated volume flow carrier liquid QTF. The mixture G, consisting of carrier liquid TF and cereal Z equally divided therein (G = TF + Z), remains in the stationary operation of the metering device 100 with a clearly defined mean residence time t in the volume V presented, wherein the average residence time t from the size of the introduced volume V and the preferably forcibly discharged volume flow mixture QG with t = V / Q _G results.

use

The proposed metering device 100 is particularly suitable for the preparation of a mixture G of drinking milk M as carrier liquid TF and rice R and / or oat H as cereal / Z, produced by means of the device according to one of claims 10 to 19.

REFERENCE LIST OF ABBREVIATIONS USED

100 metering device

2 containers

4 container lid

5 head room

6 bottom (cone-shaped)

8 tapers

10 manhole

12 sight glass

14 support frame

16 entry port

18 outlet connection

20 Ventilation device

22 overflow pipe

24 first connection (for stirring device)

26 second connection (for level control device)

28 third connection (for upper level limit detection device)

30 fourth connection (for lower level limit detection device)

32 fifth connection (for container cleaning device)

34 entry opening (for cereal (s) and / or admixture (s))

36 mechanical stirring device

38 level control device

40 upper level limit detection device

42 lower level limit detection device

44 Container cleaning device

46 Chamber cleaning device

48 Positive Displacement Pump (e.g., Rotary; Screw Spindle Pump)

50 antechamber

52 chamber lid 54 connection

(for solid doses Z, B, cereal (s) and / or addition (s))

56 connection for air

58 Connection for chamber cleaning

B admixture (s)

C1 first cleaning fluid

C2 second cleaning fluid

G mixture (carrier liquid TF + at least one solid dosage Z, B)

H oats

L air

L ^* first air

L ^** second air

M drinking milk

N free level

Q * volume flow of at least one solid metered Z, B

Q _B Volume flow admixture

Q _G Volume flow mixture

Q _L Volume flow air

QTF volume flow carrier liquid

Qz volume flow cereal

QB + L volume flow admixture and air

Q _Z + _L volumetric flow of cereal and air

rice

carrier fluid V volume presented (of mixture G)

W wheat grains

W1 first cone angle

W2 second cone angle

Z Cereal (s)

Z, B solid dosing goods (at least one solid dosing Z, B)

TF, Z, B all blend components

CQ * feed rate of the at least one solid Dosing Z, B

CB feed rate admixture

CB + L entry speed admixture

CG run speed

CL air speed

CTF inlet velocity

c _z Feed rate cereal

CZ + L entry speed cereal k condensate t mean dwell time (t = V / Q _G )

Claims

claims

1. A method for mixing and dosing solid doses (Z, B), such as at least one Cerealie (Z), in particular a solid-like, particulate, swellable cereal (Z), and / or at least one other small-sized admixture (B), in a carrier liquid (TF), with which a mixture (G) of the carrier liquid (TF) and the at least one solid Dosiergut (Z, B) is prepared in which in stationary operation a volume (V) of the mixture (G) presented a volume flow carrier liquid (QTF) and the at least one solid Dosiergut (Z, B) respectively supplied forcibly and all the mixture components (TF, Z, B) are mixed together, wherein the mixture (G) with a constant volume flow mixture (Q _G ) steadily and forcibly is discharged from the submitted volume (V), in which the proposed volume (V), which has a free level (N), regulated over this free level (N) and thus kept constant, wherein the volume flow carrier FL Liquid (Q _TF ) and optionally a volume flow of air (Q _L ) kept constant and continuously and continuously provided and each quantitatively be preset and variable within limits, in which the volume flow carrier liquid (QTF) below the free level (N) in the Mixture (G) is introduced, that in this flow-mechanically a rotational flow is generated in which the supply of at least one solid metered (Z, B) is each quantitatively presettable and variable within limits and in which the at least one solid Dosiergut (Z, B) is first combined with the volume flow of air (QL) and then in the respective mixture (Q _L + Z + B; Q _L + Z; QL + B) is introduced above the free level (N) into the introduced volume (V),

characterized,

• that the at least one solid metered material (Z, B) in each case in the form of a continuous volume flow of the at least one solid metered material (Q *) is pronounced, and

• that the volume flow of air (Q _L ), seen in the flow direction to the submitted volume (V), to the continuous volume flow of at least one solid metered material (Q *) strikes such that the volume flow of air (QL) as Durchmischungs-, drying, discharge and carrier medium for the respective at least one solid Dosiergut (Z, B) acts.

2. The method according to claim 1,

characterized,

that the submitted volume (V) is presettable within limits.

3. The method according to any one of the preceding claims,

characterized,

in that, in the region of the merging of the volume flow air (Q _L ) and the volume flow of the at least one solid dosing material (CT), an air speed (CL) given by the volume flow air (Q _L ) is greater by a factor of 50 to 100 than a flow rate of the volume flow rate at least one feedstock (Q *) feed rate (CQ *; CZ, CB).

4. The method according to claim 1 or 2,

characterized,

that the at least one solid metered product (Z, B) is introduced into the initially introduced volume (V) without adding air.

5. The method according to any one of the preceding claims,

characterized,

in that the at least one solid dosing material (Z, B) to be metered is divided into more than one volume flow and is introduced separately from each other into the initially introduced volume (V).

6. The method according to any one of the preceding claims,

characterized,

that the fluid-mechanical generated rotational flow is oriented in the opposite direction to a mechanically generated circulating mixing movement.

7. The method according to any one of the preceding claims,

characterized,

the carrier liquid (TF) is drinking milk (M) and the at least one solid dosage material (Z, B) is either a cereal (Z), which is oats (H) or rice (R) or wheat grains (W), or an admixture (B), which are nuts or fruits or seeds.

8. The method according to claim 7,

characterized,

that the oats (H) are supplied as grain, not pre-cooked and native, cold and dry, and that the wheat grains (W), watered with cold water, are supplied.

9. The method according to claim 7,

characterized,

that the rice (R) is pre-cooked and fed warm at 70 ° C.

10. Apparatus for carrying out the method according to any one of claims 1 to 9, comprising a metering device (100) having a container (2) for a presented volume (V) of a mixture (G) having a free level (N), the an entry port (16) for a carrier liquid (TF) below the free level (N) to produce a rotational flow in the container (2), an entry port (34) for at least one solid dosage material (Z, B), such as at least one cereal (Z) and / or at least one admixture (B), and an outlet connection (18) for the mixture (G), consisting of the carrier liquid (TF) and the at least one solid dosage material (Z, B), comprising a free level (N) control device (38) and an antechamber (50), which via an inlet opening (34) in a above the free level (N) headspace (5) of the container (2 ) terminates, which has a connection (54) for supplying the at least one solid Dosierg utes (Z, B) and a connection for air (56) for supplying a volume flow of air (QL) respectively into the antechamber (50), characterized that at least one pre-chamber (50) is provided,

in that the connection (54) is set up in such a way that the at least one solid dosing material (Z, B) enters the prechamber (50) in the form of a continuous volume flow of the at least one solid dosing material (Q *). 50), the connection (54) and the connection for air (56) are arranged such that the volume flow of air (Q _L ), after its exit from the connection for air (56) and on the way to the inlet opening (34) on the continuous volume flow of the at least one solid metered product (Q ^* ) meets and thereby acts as a mixing, drying, discharging and carrier medium for the respective solid metered product (Z, B),

and in that a mechanical stirring device (36) is provided in the container (2).

Device according to claim 10,

characterized,

in that the container (2) has a third connection (28) for an upper level limit detection device (40) and a fourth connection (30) for a lower level limit detection device (42).

12. Device according to claim 10 or 11,

characterized,

the container (2) has four prechambers (50) opening out into its head space (5) via an associated inlet opening (34).

13. Device according to one of claims 10 to 12,

characterized,

in that the at least one inlet opening (34) is arranged in a container lid (4) delimiting the head space (5) of the container (2).

14. Device according to one of claims 10 to 13,

characterized,

in that the inlet connection (16) is arranged on the circumference and in the tangential direction to the circumference of the container (2).

15. Device according to one of claims 10 to 14,

characterized,

the container (2) is delimited in its foot region by a conical bottom (6) having a first cone angle (W1) and a conical taper neck (8) which subsequently continues towards the outlet connection (18) with a second cone angle (W2) is, and that the first cone angle (W1) is greater than the second cone angle (W2) is executed.

16. Device according to one of claims 10 to 15,

characterized,

in that a positive-displacement pump (48) is arranged directly at the outlet connection (18).

17. Device according to one of claims 10 to 16,

characterized,

in that a ventilation device (20) is connected to the head space (5) of the container (2).

18. Device according to one of claims 10 to 17,

characterized,

the container (2) has a container cleaning device (44) engaging in its head space (5).

19. Device according to one of claims 10 to 18,

characterized,

in that the pre-chamber (50) has a chamber cleaning device (46) engaging in it.

20. Mixture (G) from drinking milk (M) as a carrier liquid (TF) and rice (R) and / or oats (H) and / or wheat grains (W) as cereals (Z) and / or other solid-like, small-sized admixtures (B) prepared by using the method according to any one of claims 1 to 9.

21. Mixture (G) from drinking milk (M) as a carrier fluid (TF) and rice (R) and / or oats (H) and / or wheat grains (W) as cereal (s) (Z) and / or other solid-like, small-sized admixtures (B) manufactured by the apparatus according to any one of claims 10 to 19.