DE2232436A1 - MIXING DEVICE - Google Patents

Description

Patent attorneys Dipl.-Ing. F. Weickmann,

Dipl.-Ing. H. Weickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. F. A. Weickmann, Dipl.-Chem. B. Huber

8 MUNICH 8 (5, THE XHA POST BOX 860 820

MÖHLSTRASSE 22, CALL NUMBER 98 39 21/22

STEMN IESLAW TOCZYSKI, 8336 PLAGE OHANCEAUX, VIIiLE D ¹ ANJOU, QUEBEC, CANADA

Mixing device

The invention relates to a mixing device with a substantially cylindrical mixing chamber with inlet and Outlet opening forming stator housing, in which a substantially cylindrical rotor rotatable and in Is arranged movable in the longitudinal direction, in the case of the rotor and stator with preferably sheet-like, arranged in rows Projections are provided.

Mixing devices of this type are used for mechanical mixing, chemical reactions, kneading, crystallization, Drying, evaporation, homogenization, degassing and conveying are used. They should also be suitable for mixing liquids, plastic substances and solid substances as well as compositions of such substances.

In previous mixing devices, improvements have always been sought. Their main disadvantages are that they cannot produce a homogeneous mixed mass from several components _{in a continuous process o} Lumps often appear in mixed products

The meowing process can best be done with the manual kneading

209 88 2/1112

The use of flour and water to make bread dough can be compared. The effect of the Drüokena, squeezing, pulling and overlaying is done with the hands

The previous attempts to simulate such effects led to a device with a rotor with blade-like Projections that were rotated about its longitudinal axis and simultaneously moved in the longitudinal direction. This creates a sinusoidal movement of the rotor blades between corresponding protrusions on the inside of the Stator. The effect achieved is due to the geometric arrangement of the rotor blades and stator blades however, only a movement in a direction associated with this movement, i.e. a rotary movement and a longitudinal movement with changing direction, »devices of this kind also require large distances between the rotor blades and the stator blades, so that lumps between the blades can pass through and not a perfect mixture arises. Furthermore, the mixing processes in devices of this type are difficult to control.

The object of the invention is to eliminate the disadvantages of previously known mixing devices and the Ensuring the production of homogeneous mixed masses in continuous operations without the formation of lumps

To achieve this object, a mixing device of the type mentioned at the outset is designed according to the invention in such a way that that the projections of the rotor and stator are arranged as nested rows and that the rotor is provided with a drive coupling, di · him such measured cycloidal movement gives that «a during the rotary motion between the stator projections hinduroh ~ moving projections are displaced in the longitudinal direction and temporarily touch the stator protrusions.

2/1112

A mixing device of this type ensures the production of perfectly homogeneous mixtures of the most varied Fabrics. It enables mechanical mixing, chemical reaction mixing, kneading, crystallization, the drying, evaporation, homogenization, degassing and conveying of substances. This device is also suitable particularly good for mixing liquids and plastic materials as well as solids and combinations of these Substances, whereby the formation of lumps is practically completely avoided «

Embodiments of the invention are described below with reference to the figures.

Figoi the vertical section of a mixing device according to the invention;

2 shows an enlarged vertical section of the drive for a mixing device according to the invention;

Fig. 5 is an enlarged vertical section of another Embodiment of a drive;

Figo4 is an enlarged vertical section of another Embodiment of a drive;

Fig.5 is a diagram of the by the drive according to Figo2 or 3 generated cycloid movement and

Figo6 is a diagram showing the arrangement of drive gears the arrangements shown in Figo 2 and 3 with representation of their movements

In Figol a mixing device is shown, which in essentially consists of the following main parts · To ·? · Next, an elongated, vertically arranged stator body A is provided, which in the case shown on a Room ceiling or a support beam B is attached and forms a mixing chamber. It is coupled with a special drive C, which will be described in the following, on his

? Π 9 8 8 ? I 1 1 1 2

An outlet opening D is provided at the lower end. A rotor E, which is coupled to the drive 0 via an Aohae P, is arranged within the stator body A.

In the illustrated example, the rotor E has the shape of a hollow body with an upper part 15 and a on the other hand thinner lower part 17 »Parts 15 and 17 contain a heating or cooling liquid ·

The rotor E is on its outside with meow leaves G The stator body A is surrounded on the outside τοη heating devices 19 and 20 and provided on its inside with projections which can be designed as bolts or blades J

Inlet openings 21 and 23 for solids and liquids are provided at a suitable point in the region of the upper part of the stator body A. At 24, 25 and 27 outlet openings for gases and vapors are provided.

When the mixing device is in operation, the liquid and / or solid substances to be mixed are introduced through the inlet openings 21 and 23. Such substances can, for example, consist of an aqueous mixture of sulfuric acid and fluorine exist · The substances migrate through gravity within the mixing chamber in the stator body A naoh below, while the rotor E is moved by the drive C. The substances are connected to by the sheets G the projections J influenced and pressed by this effect naoh down and output through the outlet opening D.

The rotor E is rotated and moved at the same time near top and bottom in the direction of its longitudinal axis · This movement takes place in a special way to be described by the drive C. During this movement, the

09882/1112

Leaves a special prescribed path, which is also described nooh »they only practice one the invention possible effect on the mix «.

In FIG. 2, an exemplary embodiment of a drive is shown, which has a main housing K and is provided with a movement element, which in the case shown an electric motor 39 is. This motor 39 i * t with its shaft 45 via a coupling 43 to a drive shaft 41 coupled. The drive shaft 41 has a hollow 47 »which ends in a flange 49, which is provided with a larger toothed pulley 51. This engages in further gears 53, each of which has an outwardly extending axis 55 and a near inwardly extending axis 57 Has. The axle 55 is mounted in a cage 59 on ball bearings 61. The cage is in turn mounted on bearings 63 within a part of the housing K.

On the respective Aohse 57 are swisohen flaps 67 and Bearings 65 arranged, which are connected to a Hing 71 arranged on an axis 73 · The Aohse 73 is in the hollow part 47 of the drive shaft 41 and can be moved up and down within this hollow part 47, where it is guided on bearings 75 and 77 »The drive shaft 41 carries a gear 79» which is a gear 81 via a toothed band or other transmission 83 moves · The gear wheel 81 drives a shaft 85 »which is guided in bearings of the main housing K * the lower end This shaft 85 carries a gear wheel 87 »which engages in a gear wheel 89, which runs with a near outside Flange 91 is provided «This has a sawn part 93 »which engages in gear 53 ·

During operation of the arrangement, the rotation of the drive shaft 41 by the motor 39 is described via the

2/1112

Gear arrangement causes gear 93 and gear 51 to rotate, thereby rotating gears 53 and axles 57

The drive shown in Pig »5 is designed similarly to that shown in Pig · 2, so that it can be used for corresponding parts The following is provided with similar reference numbers: · The difference "Between the two constructions is" that there is no external drive via a gear 79, which in turn a gear 93 drives. The gear shown in Figo3 is attached to a base plate, which is secured by a ring « shaped stop 194 is formed on the housing K ^

The arrangement shown in Figo4 is suitable for generation a different movement curve, over which a spark of the stator would be moved by the driving movement of the mixing device described in terms of their function

A motor (not shown) drives a shaft 201 which in turn a shaft 203 rotates which via gearwheels H is coupled in a transmission L with an outer shaft 205 which has a gear 207 which is in a gear 209 engages on a shaft 211. The shaft 211 moves a crank 213 in a reciprocating motion. The crank transmits its Weoheel movement to a shaft 215 " Via a yoke 217 »which sets a coupling 219 in reciprocating motion» This is with the rotor (not shown) coupled to the mixing device via a shaft 221

The rotation of the shaft 215 is generated as follows. A gear 223 is rotated by the gear M, which is seated on a rotating body 225, which is supported by bearings 227 and 229 rotates on the Aohse 215. The rotating body 225 carries

209882/1112

2232A36

a yoke 23t, which is provided with channels in which bearings are guided, which on one on the axis 215 with rotating body 235 attached to a wedge 237

The axis 215 will therefore have an alternating movement in an upward direction. and downward direction and at the same time given a rotary movement, whereby the hotor parts Gr are moved in such a way, that a point describes a sinusoidal curve on its surface.

The arrangement shown in Figo2 can be used to generate a Combination of movements from the movements of the gears 53 and the axis 73 can be used. To do this, the following are Processes decisive:

1 · One rotation of the gears 51 and 93 in coincidence Direction and with the same circumferential speed results in a locking of the gear 53 between the gears 51 and 93 · The axis 73 is only with the speed ^ «r wave 41 without upward and Downward motion rotated

2 A rotation of the gears 51 and 93 in the opposite direction, but with the same peripheral speed, results in a rotation of the gear 53 about the center of the axis 55, but no circular movement around axis 73 The main movement of axis 73 is the upward and downward movement

3 · A rotation of the gear 51 and a standstill of the Gear 93 (see also Pig.3) has the effect that the gear 53 has the compound movement on the axis 73 which rotates with the movement of the shaft 41 and upward in accordance with the ratio of the sizes R and r and is moved downwards

4 · A rotation of the gears 51 and 93 with variable Circumferential speed and variable direction «wipe, for example, optimal speed to the left Direction Above speed zero up to 'maximum

20 9882/11 12

painter speed in the right direction, results in a variation of both movements between a pure rotation up to the main sliding movement over all movement combinations between these end states «.

By means of suitable couplings, similar movements can also be generated with the drive shown in FIG.

In such drives, which are used in mixing devices with stator teeth or stator blades, the Rotor movement can be adapted to the relative movement of rotor and stator blades

Fig.5 shows the path of a rotor blade on the circumference of the Stator. This path is a curve as it can be generated by a drive according to FIGS. The leaves of the stator are arranged so that each rotor blade is moving upward between individual pairs of blades and is moved between rows of sheets as it moves downward.

This results in the following mixing process. When the downward movement When the blades are moved through between the rows of blades, the mixed material is between the blades of the rotor and the stator are kneaded and pushed downwards · At the same time, a rotary movement is carried out. The rotary motion results in a cycloid movement in combination with the downward movement. The downward movement causes a Kneading effect between the rotor blades and the stator blades. The upward movement causes a shear and Wiping movement while the rotor blades are moved between two consecutive blades of the stator «

Pig. 6 shows a diagram of the gears 51 and 53 shown in FIG Fig, 2 are shown. The ratio of the radius R des

209882/1112

Gear 51 to radius r of gear 53 (Figo2 and 3) determines the number of sliding movements of the Aohee 73 during one revolution. Said the rotor blades must always release the blades or teeth of the stator, the ratio of the sizes R and r should be chosen so that each rotor blade is moving relative to the previous one Movement in space exactly repeated · This condition can be satisfied if the number of rotations of the small gear 53t with respect to one rotation of the large gear 51 is an integer «

2 0 9 8 8 2/1112

Claims (1)

- ίο - 2232A36 Patent claims 1 · Mixing device with a substantially cylindrical one Mixing chamber with inlet and outlet openings forming stator housing in which a substantially cylindrical rotor rotatable and longitudinally is movably arranged, with the rotor and stator with preferably leaf-like gate arranged in rows » Jumps are provided, characterized in that the projections (S, J) of rotor (E) and stator (A) are arranged as nested rows and that the rotor (E) is provided with a drive coupling (C) which gives it such a dimensioned cycloid movement issued that its moved through between the stator projections (J) during the rotary movement Projections (G) are displaced in the longitudinal direction and touch the stator projections (J) sideways. 2 · Mixing device according to claim 1, characterized in that that the stator projections (J) are sheet-like and at a small distance from the surfaces of the blade-like rotor projections (G) are arranged 3 · Mixing device according to claim 1 or 2, characterized in that the drive coupling is a first and a second ring gear (51, 93) which are arranged opposite one another on a common axis and have the same radius and the same number of teeth that the first and second ring gear (91, 93) double secondary gears (53) are provided, which are connected to the rotor shaft (73), and that first ring gear (51) is rotatable by a drive (39), whereby the rotor shaft (73) is rotated and via the Secondary gears (53) in the longitudinal direction for example is moved up and down 209882/1112 4ο mixing device according to claim 3 »characterized in that that the second ring gear (193) is fixed and that the secondary gears (153) control the movement of the Rotor axis (173) in the longitudinal direction by its movement on the circumferences of the first and second ring gears (151t 193) generate β mixing device according to claim 3, characterized in that that the second ring gear (93) through the drive (39) with the same peripheral speed, but in opposite direction to the first ring gear (51) is rotatable, whereby the secondary gears (53) to their axis running transversely to the rotor axis (73) are rotated and thereby a longitudinal movement of the rotor axis (73) To give· 6ο mixing device as claimed in claim 3 », that the first and second ring gear (51, 93) are rotatable with matching peripheral speed and in a matching direction, said secondary gear wheels (53) are locked between them and the rotor axis (73) is given a rotational movement β 7. Mixing device according to claim 3, characterized in that the first and second ring gear (51, 93) with variable peripheral speeds are rotatable in the same and in opposite direction and that the directions of rotation are reversed when the drive (39) is stopped. 8, mixing device according to one of claims 3 to 7, characterized in that the secondary gearwheels (53) each on one lying transversely to the rotor axis (73) Axis (55) are mounted in a cage (59) 209882 / η 12 is arranged in a horizontal plane, and that one each with a secondary gear (53) connected further, offset with respect to the first-mentioned axis (55) Axis (57) is provided which is attached to a ring (71) attached to the rotor axis (73), and that the secondary gears (53) during their rotation a rotation of the further axis (57) about the former Axis (55) and thus the longitudinal movement of the Hotoraohse (73) generate « 9 · A method for mixing substances in a mixing device designed according to claims 1 to 8, characterized in that the substances in the through the Stator (A) formed mixing chamber are entered and that the rotor (E) a cycloid movement and a Rotary movement is given, by which it is rotated and at the same time set in the direction of its axis of rotation in ffeohselbewegung, with the substances during the Kneaded movement in the first longitudinal direction between blades (& »J) provided on the rotor and on the stator and are moved in the direction of an exit opening (D), while moving in the opposite direction In the longitudinal direction, the rotor blades (Gr), which are moving roughly between the stator blades (J), experience a soaring and visual impact ? 09882/1112