Process and device for the continuous blending of liquid and/or

Details Process and device for the continuous blending of liquid and/or Process and device for the continuous blending of liquid and/or

1994-04-11

1996-01-30

Jenkins, Robert W.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

366319, B01F 704

Patent

active

054876052

DESCRIPTION:

BRIEF SUMMARY
The instant invention relates to a process for continuous blending, in particular for the blending of liquid, lumpy or pourable materials into basic foodstuff masses such as foam or dough. The invention furthermore relates to a device suitable for this purpose. The lump-free and uniform blending of pourable or lumpy substances into basic foam or dough masses is called "mixing".
A device to blend liquids and pourable materials is known from the German patent DE PS 21 13 960. In this device the shaft is made in form of a single hollow shaft and is provided with distributor pipes through which the liquid conveyed in the hollow space of the hollow shaft is admixed with the dry substances in the mixing chamber of the device. Another device is known from DE PS 96 36 88.
In this device the shaft is subdivided into several mixing segments which are differentiated by mixing elements that are installed at different distances from each other. The substances to be mixed can be fed into the mixing container of the device at the beginning of these zones via a filling opening. To improve the mixing results, counter-elements to the mixing elements in stator form are distributed in addition and are attached fixedly to the inner wall of the mixing container.
The known devices have the advantage that homogenous substance mixtures can be produced in a short time from liquid and dry substances by using them. Thus the high pressures produced in the mixing container during mixing and the shearing force which is thereby produced lead to a break-down of the dry substances and to the destruction of the structure of the liquids. In addition the substances are heated during mixing by the high application of energy, possibly causing a further undesirable change in the properties of the substance mixture. Furthermore it is not possible to achieve different degrees of blending in the individual substances when mixing different substances in these devices.
U.S. Pat. No. 3,064,908 discloses a mixing device which is used to suspend cellulose or pulp items in a carrier liquid. In this device counteracting helicoidal helixes rotating towards each other are provided by means of which the suspension is pressed against a housing wall so that liquid can be removed from a discharge valve installed below the helix arrangement as a result of the pressure produced.
FR 2,618,643 discloses a mixing device in form of a double worm extruder in which the additions are fed at filling points which are axially offset along the mixing line. In this device too, a high pressure is exerted upon the mix so that a great mechanical load is imposed upon the mix.
DE PS 401033 discloses a mixing or feed screw used to mix fine-grain materials. Here band-shaped screws are provided so that the material is thrown by one band-shaped screw into the circle of rotation of the other one and is pushed forward in increments while being mixed closely. Such a device is not suitable for the processing of foams or dough because only lumpy materials can be lifted up in the overlapping zone of the screws whereas non-lumpy substances do not participate in the mixing process.
The devices of the type mentioned above are therefore unsuitable for the production of substance mixtures where the structure and form of the original substances is to be preserved. This applies in particular to the production of baking dough, where liquid foam such as egg foam is to mixed with flour or starch and is to be blended with additional materials such as fruit, cacao, etc. The great pressure build-up during mixing in conventional devices leads to a compaction of the foam and to the destruction of the solid additional materials so that an undesirably tough dough mass is produced. In addition, egg foam can run because of the added heat so that the mixed baking doe becomes unusable.
It is the object of the instant invention to provide a process and to create a device such that liquid and dry substances can be mixed through with little energy consumption and using means of simple design, while preserving the

REFERENCES:
patent: 2611590 (1952-09-01), Jebens
patent: 2630302 (1953-03-01), Jones
patent: 2686336 (1954-08-01), Kleinlein
patent: 4941132 (1990-07-01), Horn

Affiliated with

Also associated with

Rating

Process and device for the continuous blending of liquid and/or does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for the continuous blending of liquid and/or , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for the continuous blending of liquid and/or will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-154077