US1706176A

US1706176A - Mixing apparatus

Info

Publication number: US1706176A
Application number: US240732A
Authority: US
Inventors: Lenart Paul
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-12-28
Filing date: 1927-12-17
Publication date: 1929-03-19
Anticipated expiration: 1946-03-19

Description

March 19, 1929. P. LENART MIXING APPARATUS Filed Dec. 17, .1927

Patented Mart 19, 192 9,

PATENT OFFICE.

PAUL LEN-ART, OI COLOGNE, GERMANY.

' MIXING APPARATUS.

epplioationfllegl December 17, 1927, Serial No. 240,732, and in Germany December 28, 1926.

The invention relates to mixing apparatus comprising two containers arranged one within another and with which the materials to be mixed leaving the inner container at 5 the bottom are supplied again to this con-' tainer in a cycle by means of a centrifugal disk on the way through the annular space existing between the inner and outer container. Mixing apparatus of this type have 1o turned out very well in practice in all cases where the most intimate possible distribution of powdered or grained substances in liquids is to be obtained, as with these apparatus only a fraction of the time required with the hitherto known mixing apparatus,

and a lower consumption of ower is required, to obtain a completely liomogeneous mixture. Now my invention has for itsobject to so improve mixing apparatus of this type as to enable a further acceleration of the mixing procedure and a raise ofthe mixing intensity, and to afford at the same time the ossibility of treating with the same good e ect larger or smaller quantities in one and the same mixin apparatus. These objects are obtained pnmaril by the fact, that apertures are provide in the wall of the inner container, the passage area of which apertures is adjustable, these apertures permitting a suitable portion of the materials'to be mixed to directly pass from the annular space into the inner container. This arrangement affords the possibility of using the ap- 5 paratus even when only its bottom is covered with the materials, as in this case the materials need to rise only to the apertures provided in the inner container,'to describe the cycle, which would be'impossible when, as hitherto the li uid would have to rise to the upper edge of t e inner container. But even with the mixing apparatus being normally filled the said apertures in the wall of the inner container aflford an important advantage, as they make'a greater or less proportion of the liquid enter the inner contalner laterally, according to the more-or less free passage area of the apertures. The divisional liquid currents thus obtained, which flow 5 into the inner container in diflt'erent directions, cause an intense whirling and thereby considerably improve the mixin effect. When the apertures are further desi ed as slots and guide plates are arranged in cone. g. by the drive '14. This disk in? 1 nection with them of 'a configuration of turbine guide blades, the material circulating in the annular space enters the inner container through the slots ininverse direction, whereby the mixing eflect is-still further im roved. The guide plates can be made 'ad ustable, to regulate both the passage area and the direction of the currents.

In order that my invention may be more easily understood, some referred embodiments of the same are illustrated in the drawing which accompanies and forms part of this specification. In this drawing:

Figure 1 is a vertical section through my improved mixing apparatus,

Figure 2 is a section on line IIII of Figure 1,

Figures 3 and 4 are corresponding sections through somewhat modified apparatus, and

Figures 5 and 6 showtwo constructions of the centrifugalizing disk.

Referring to these Figures, 9 denotes the outer container or shell of the apparatus and 10 the inner container which has a bottom aperture 11 closed by a sieve plate 12. To avoid dead s aces, the wall of the inner container lO su sides with a suitable curvature into the bottom. Underneath the sieve bottom' 11 is arranged a centrifugalizing disk 13 which is rotated in an suitable minner,

e esigned like a fan, as illustrated in gure 5, or as a real disk, as shown in Figure 6, which disk has

blades

15 and 16 on both sides, and openings 17. Openings, preferably slots 18 are provided in the wall of the inner container 10, which slots either have no regulating means, or, are e uipped, as shown in Figure 2, with turbine lade-like guide plates 19, bywhich the liquid circulating in the annular space is led through the. slots 1 8 into the inner container in reversed direction. As illustrated in Figure 4, these guide plates can be made adjustable, by mounting them rockingly on pins 20 and connectin them to a common adjusting ring 22 e. g. y means of links 21. A clamping means w23 may be rovided for ring'22,to'adjust it from outsi e, so that the possibility is 'ven to regulate both the passage area of, e slots 18 and the guide angle of the plates 19.

As can be seen from Fi plates may be dispensed wlth and slides 24 re 3 the guide -.it returnsto the inner container over' the A may bearranged to vary their passage area.

The slides 24 maybe adjusted either individually or in common. I

The described mixing apparatus operates as follows:

The material supplied to the apparatus and consisting of a liquid andr'pulverous or grained substances, fills the apparatus about up to the level denotedby 26. Now when the centrifugalizing disk 13 is set in rotation, the liquid with the solid substances is delivered from the inner container into the annular space existing between the inner and outer container in the direction of the arrows, Figure 1, and'rise inthis annular space until upper edge thereof, and describes thus a cycle. I

At the same time, according to the adjusted passage area of the slots 18, a portion of the material enters the inner container directly through these slots. A manifold subdivision of the material partaking of the cycle is thus obtained, and'a subsequent reunion thereof in the inner container 10, whereby the mixin effect. is considerably improved. This e ect is still further increasedby arranging the guide plates shown in Figures 2 and 4 that cause the material entering the container 10 through the slots 18 to undergo a deflection in the direction a of the arrows, Figures 2 and 4.

When the apparatus is filled only partially, e. g. about up to the level 27 only, then it is impossible in itself, for the liquid to return to the inner container over the upper edge thereof, becausethe liquid quantity is too small to fill the annular space up to said upper edge. In this case the whole material enters the inner container through the slots 18. These slots thus enable the cycle, which forms the essential feature of the operation, to beattained also with an incomplete filling of the apparatus, so that the range of use'of one and the same apparatus is nolably' enlarged. 'When the liquid contains ore1 with rawing the sieve ottom 12, by lifting .it. This can be executed even during the operation of the apparatus.-

What I claim, is Y Y 1. A mixing apparatus comprising two containers arranged one within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container having openings in its bottom, and means for pump-.

ing the" material to be mixed downward throu h said bottom openings and upward in sai annular space, said inner container being provided with openings in its side walls adapted to permit the material to flow back into said inner container from said an nular space.

2. A mixing apparatus in accordance with substances, the can be removed by,

claim 1 in which said pumping means comprises a centrifugal arranged between the I its side walls adapted to permit the material to flow backinto said inner container from said annular space.

4. A mixing. apparatus comprising two containers arranged one within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container having openings in its bottom, means 'for pumping the material to be mixed downward through said bottom openings and upward in said annular space, said inner containerbeing provided with openings in its side walls adapted to permit the material to flow back into said inner container from said annular space, and means for varying the sectional area of said side openings.

5. A mixing apparatus comprising. two containers arranged one ,within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container hav'in openings in its bottom, means for pumping the material to be mixed downward through said bottom openings and upward in said annular space, said lnner container being provided with openings in its side walls adapted to permit the material to flow back into said innencontainer from said an nular space, and guide plates mounted near said side openings adapted to control the direction of flow of material passing through the same;

.6. A- xing apparatus comprising two containers arranged one within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container having 0 enings in itsbottom, means for pumping t e material to be mixed downward through said bottom openings and upward in said annular space, said inner container being provided with openings in its side walls adapted to permit the material to flow back into said inner container from said annular space, means for varying the sectional area of said side openings, and guide plates at saidside openings adapted to control the direction of flow of material passing throu h the same.

7. mixing ap aratus comprising two containers arrange one within the other and Side walls adapted to permit the material to flow back into said inner container from said annular space, and guide plates at saidside openings for varying the sectional area thereof and for controlling the direction of flow of material passing therethrough.

8. A mixing apparatus comprising two containers arranged one within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container having openings in its bottom; means for pum ing the material to be mixed 'downwar through said bottom openin s and upward in said annular space, sai inner container being provided with openings in its side walls adapted to permit the material to flow back into said inner container from said annular space, guide plates mounted near said side-openings and adapted to control the direction of flow of material passing through the same, and means for adjusting said glide plates.

9.- mixing apparatus comprising two containers arrange one within the other and with the inner one spaced from the other at sides andbottom to form an annufor gumping the material to be mixed downwar through said bottom openings and up-" ward in said annular space, "said inner container being provided with openings in its side walls adapted topermit the material to flow back into said inner container from said annular space, the side walls of. said inner container curving gradually into the bottom walls thereof.

.10. A mixing ap aratus comprising two containers arranged one within the other and with the inner one spaced from the other at sides and bottom to form an annular space between them, said inner container having an openingin its bottom, an easily detachable sieve fitted into said opening, means for pumping material to be mixed downward through said sieve and upward in said annular space, and openings in the side walls of said inner container adapted to permit the material to flow back into said inner container from said annular space.

11. A mixing apparatus in accordance withv claim 1 in which said pumping means consists of a disk having upper and lower centrifugal ribs and openings cooperating with those inthe bottom of said inner container, said disk being arranged between the bottoms of said twocontainers.

12. A mixing ap with claim 8 inwhic said adjusting means comprises a ring mounted concentrically with said containers, a link connecting each of said guide plates with said ring, and means accessible from the outside for adjusting said ring circumferencially. lar space between them, said inner container having 0 emngs in its bottom, and means In testimony whereof the foregoing specification is signed.

PAUL LENART.

aratus in accordance