DE1607780A1 - Mixing device with rotating mixing container and inclined rotation axis - Google Patents

Description

Günther Papenmeier EG., Machine and apparatus construction 4931 Pivitsheide V.L., Detmold district, Sehulstrasse

"Mixing device with" rotating mixing container and inclined axis of rotation. "

This invention "relates to an orbiting, preferably conical, conical mixing container, with an inclined axis of rotation and one in it - around one stationary axis - rotating mixing screw, which at the lowest point is approximately parallel to the inner container wall running around.

There are many conical or conical mixing vessels with centrically rotating mixing screws Known variations. In the case of mixing devices of this type with a centrally arranged mixing tool shaft, "The compartment part is that the mix is insufficiently circulated and on the container wall can stick.

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It has been suggested "one or more Mixing and! Conveyor screws - apart from their rotation around their own axis - parallel to the container wall rojit along to get the mix from the To solve the container wall.

In the known mixing machines of this type "form however, there are very often nests in the middle of the container and in certain zones in which the mix is not circulated will.

It has also become known, a mixing container to let a vertical axis renting, in which close and approximately parallel to the container wall one or several mixing screws are arranged.

In these previously known mixers with conical mixing containers, the disadvantages are based on the fact that

a. the mix - especially with smaller batches - is inadequately circulated;

b. the containers are awkward to empty and clean;

c. the technical effort is considerable and the uniform, rapid circulation of the mix strongly deviating batch quantities is not always possible *

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There are also the "known mixing devices to be mentioned. which have a conical or conical container and on the tapered side, in alignment the container axis, are equipped with a discharge screw. This known arrangement of a discharge screw in the alignment of the container axis, below the mixing container does not cause any mixing effect, because this screw does not protrude into the container and cannot brush the container wall.

The invention has set itself the task of achieving better circulation of the material to be mixed, with

a. dead zones in the mix are avoided;

b. an intensive mixing and agitation even with the smallest amount of oargen in a relatively large one Container can be achieved;

c. this high mixing effect is achieved with only one screw and a fixed axis;

d. by an acfcs-iale displacement of the worm and opposite direction of rotation a quick emptying and cleaning of the container is possible;

e. the mixing container can be emptied and cleaned without tilting.

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To solve the problem is according to the invention "with a conical or conical rotatable en-ordered Container inclined the axis of rotation from the vertical and in the direction of inclination of the axis of rotation a mixing screw is arranged at the lowest point in the container, which rotates around a fixed axis, is axially displaceable.

By the arrangement according to the invention it is achieved that the lying on the container wall and under Under certain circumstances, a sticky mixture is repeatedly fed to the mixing screw and the material to be mixed is caked on is avoided on the container wall. The mix is always in the lower layer in the hopper conveyed upwards by the screw conveyor, the screw is always fully in the mix, also included smallest container filling.

In particular, the inclined axis of rotation causes a faster material throughput, in which the im Mixing material lying in the upper part of the hopper falls back directly onto the mixing screw when the mixing hopper is slowly rotated from the culmination point.

This ingenious arrangement of the known mixing container results in a more intensive circulation of the material to be mixed achieved, even if only minor particles of the mixture are deposited on the container wall,

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the sick at the culmination point of the container wall loosen and inevitably have to fall back on the mixing screw. The inventive mixing movement "causes that the substances to be mixed nowhere come to rest in the container, but rather the moving parts of the screw conveyor and the container wall can be supplied without being able to be deposited anywhere. As soon as the substances are sufficiently mixed and are homogeneous, they can be drained while the mixing device is in operation. This is useful the direction of rotation of the mixing screw is reversed, so that the mixture is no longer on the container wall is conveyed upwards, but opposite to the tapering part of the container.

A closing piston, which is arranged in the lower part of the container and the screw bearing can accommodate it is axially displaced for the purpose of emptying until the mixing screw is fully in front of the outlet. The material to be mixed can, without the mixing device according to the invention shut off, can be drained from the rotating container. The screw brushes the container wall completely, whereby any sticking substances are completely removed from the container.

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In the case of strongly adhering raw materials, it is possible that Mixing screw itself from .an elastic, resistant material to manufacture, with this on the container wall rubs and thus makes direct contact with the upper surface of the container wall. By this equipment and arrangement of the mixing screw according to the invention, it is possible to the container up to to clean the smallest residues.

If the container has been emptied, the sealing piston can be raised again in the container and the mixing device can be refilled.

The feed opening of the mixing container lies in the axis of rotation. This makes it possible to to feed the mixing container continuously via a rotary coupling during the rotary movement.

The axially movable arrangement of a locking piston with the screw conveyor enables a continuous mixing movement by the locking piston only to one limited! part of the opening releases and the mixing screw a certain amount of. Time to time or drains continuously from the mixing tank.

The axis of rotation of the mixing container can be in any of the vertical. Angle of inclination aligned be.

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The inclination of the axis of rotation can depend on the material to be mixed, e.g. B. can dry and lumpy mixtures are mixed with a smaller angle of inclination of the mixing container, while fabrics with an easy-flowing consistency are under A greater axis inclination may be required do.

According to the revolving container is on the Discharge side kept open and at this end with a drive ring or reinforced edge, preferably provided with a toothed ring, with which the container can be set in the rotating movement. Approximately In the first third of the container height, a running ring is attached around the reinforced jacket, which is rotates on appropriately mounted support rollers. The open end of the container is through fixed sealing elements closed, which are located in the bearing plate. The mixing container with the gear rim is in the bearing plate rotatably arranged. In the center of the bearing plate is the housing for the axial displacement housed the screw conveyor with the locking piston, namely equal to the angle, which the angle of inclination corresponds to the lower edge of the container.

In this stationary - arranged in the bearing plate - housing is closed by a locking piston driven through the screw conveyor.

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The worm can be driven by a lever drive and is for both left and right-hand drives Clockwise set up.

The invention will now be explained in more detail with reference to the accompanying drawing / these show:

FIG. 1 A cross-sectional drawing of the devices according to the invention with an indication of the Mixing movement;

Figure 2 is a cross-sectional drawing of the same device, but with the outlet open with emptying position.

In FIG. 1, the conical container 1 has an axis of rotation which is inclined, for example by approximately 20 ° Rotatably arranged in a machine housing 2. The lower part of the Mixing container 1 is surrounded by a reinforced jacket 5 for receiving a toothed ring 4 or one other machine element for driving the rotatable container 1 about the axis of rotation.

The mixing container Λ with the toothed ring 4 attached to it is rotatably arranged on the rigidly attached bearing plate 5. In the bearing plate 5 are the sealing elements 6, which seal the lower, open part of the container 1 to the bearing plate.

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A tire or reinforced rim surrounds the mixing container 1, for example approximately in the first third of the container height. The tire runs on fixed rollers 7 ^ - Wbd support the container during the turning movement. The drive for the container rotation can ζ. B. take place via a gear 8, wherein the speed is appropriately steplessly adjustable.

In the center of the bearing plate 5, the housing 9 for the mixing screw 10 and the locking piston 11 is installed and partially protrudes into the lower opening of the mixing container 1. The mixing screw 10 is close, as well as approximately parallel shortly before the container wall and is axially displaceable with the sealing piston 11. The axial displacement of the sealing piston 11 takes place via a mechanism 12, preferably with a Pneumatics, whereby the outlet 13 is opened or closed.

A drive motor, for example equipped with a stepless control drive, drives the mixing screw 10 via a reduction gear either left or right hand. The effective mixing process - even with the smallest batch quantities - is supported by the diagonally upward conveying in the direction of fall Mixing screw 10 with simultaneous rotation of the mixing container s 1 erziejalt.

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The drive shaft of the mixing nook 10 is rotatably mounted in the axially displaceable locking piston 11.

In the figure 2 the mixing device according to the invention is shown at the moment of emptying the container. The closure piston 11 has been withdrawn into the housing 9 by the mechanism 12, whereby the outlet 13 is released. The mixing screw 10 expediently runs in the opposite direction of rotation during the emptying process and inevitably conveys the material to be mixed through the open outlet 13. The mixing container 1 continues to rotate during the emptying process, any mixing residues sticking to the container wall are always fed to the mixing screw 10 and then to the outlet promoted. This guarantees that the mixing container will be completely emptied. In special cases, instead of a mixing screw 10, a double screw can be arranged in a correspondingly designed housing in the mixing container.

Considered publications:

German patent specifications No. 7621, 916690, 1065699, 1109148

German interpretation: No. 1225951 »French patent specification No. 1175226.

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Claims (9)

1. Mixing device with a rotating mixing container, in particular a conical shape with around the own axis rotating mixing screw, characterized in that the mixing container around a revolves from the vertical inclined axis of rotation. 2 · Mixing device according to claim 1, characterized in that that a mixing screw rotating around its own axis in the mixing container fixed axis is arranged. 3. Mixing device according to claim 1 and 2, characterized in that several in the mixing container Mixing screws are arranged parallel to the container wall. 4-, mixing device according to claims 1-3 »thereby characterized in that the axis of a mixing screw in the deepest point in the container under the Direction of inclination of the axis of rotation and arranged approximately parallel to the inner container wall is. 5. Mixing device according to claims 1-4, characterized in that at least one worm gear is axially displaceable. 9098 A3 / 0990 - 2 - 6. Mixing device according to claims 1-5> characterized in that at least one mixing screw with a fixed closure basket is coaxially connected. 7. Mixing device according to claims 1-6, characterized in that a sealing piston (11) arranged in a preferably cylindrical housing with an outlet device is. 8. Mixing device according to claims 1-7, characterized in that a cylindrical Housing is in the parallel alignment of the surrounding container wall. 9. Mixing device according to claims 1-8, characterized in that a sealing piston (11) can be axially displaced in a housing (9) to such an extent that an outlet opening released or closed in the housing. 1G. ! Wiping device according to claims 1-9, characterized in that the mixing screw Equipped with a «/ endel made of elastic material is and revolves on the inner container wall and around its fixed axis. 9098 ^ 3/0990 Blank page