JPS6115943Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a container, a mixing mechanism disposed concentrically within the container, and a rotating rotating arm having a radially extending arm having a mixing tool in the form of a plowshare, for example. The present invention relates to a mixer equipped with a mixing mechanism equipped with a shaft.

The invention relates in particular to trough mixers or drum mixers with horizontal shafts.

In known mixers of this type, the mixing tool rotates close to the internal wall of the container, and the mixing tool rotates close to the internal wall of the container, especially when operated with a large number of mixed materials. It is disposed at the end of the radial arm of the mixing mechanism so as to be completely submerged. If this mixing mechanism is operated at a relatively low speed, most of the substance to be mixed will be deposited in the lower region of the container, so that each mixing device will penetrate through the pile of material to be mixed. I have to move. In this case, the mixing tool will be subjected to a load that varies widely depending on the level at which the mixer is filled with to-be-mixed material and the thickness of the layer of to-be-mixed material on the mixing tool submerged in the pile. . This results in considerable wear on the mixing tool and requires a large amount of power to operate the mixing mechanism.

The object of the invention is to reduce the loads on the mixing device and its arms when the mixing device is plunged into and through the material to be mixed, and in this way to reduce the high peak load in the mixing mechanism of mixers of the above-mentioned type. The goal is to reduce energy consumption, reduce its required power consumption, and also reduce wear on the mixer.

According to the present invention, the present invention includes a container having a peripheral wall and a mixing mechanism that rotates concentrically with respect to the container, and the container has a horizontal center axis that is also the rotation axis of the mixing mechanism. , the mixing mechanism includes a rotatably mounted shaft carrying at least a pair of radially extending arms each having a mixing implement, one of the mixing implements being disposed proximate said vessel wall, the other A mixer is provided in which the mixing tool is located closer to the shaft in the radial direction than the one mixing tool, and is disposed in front of the one mixing tool when viewed in the rotational direction of the mixing mechanism.

In the mixer according to the invention, an additional tool is provided in front of each mixing device (main mixing device) adjacent to the wall of the container, so that these two mixing devices penetrate different layers of the material to be mixed respectively. I'm starting to do that. The additional mixer divides the mixer before the main mixer, thereby reducing the power required for the main mixer to pass through the mixer and scoop it. This is particularly effective when the mixer is operated with a large amount of materials to be mixed and the main mixing tool penetrates deeply into the materials to be mixed. Particularly when using a mixer in the form of a plowshare, the total power required for the mixing mechanism can be reduced in this way and wear on the mixer can be reduced.

In one embodiment of the invention, the shaft of the mixing mechanism carries a pair of arms of different lengths.
Each pair of arms lie in a common radial plane and have a mixing device disposed at their ends. In this case, it is advantageous if the length of the shorter arm is such that it passes through the material to be mixed at least once during each rotation of the additional mixing device.

The present invention is particularly suitable for large mixers that are operated with more than 50% filling of to-be-mixed materials.

Next, the present invention will be described with reference to the accompanying drawings in terms of embodiments of the present invention.

As shown, the mixer has a drum-shaped container 1 . At the center of this container 1 is a drive shaft 2.
is attached so that it can rotate. This shaft has radially extending arms 3 and 4. These arms 3 and 4 have different lengths in different radial planes and are distributed helically. The shorter arms 3 and the longer arms 4 are arranged one behind the other in each radial plane. Arrow 5 of drive shaft 2
The shorter arm 3 when viewed in the direction of rotation indicated by
are arranged in front of the longer arm 4.

Mixing tools 6 and 7 are arranged at the ends of arms 3 and 4, respectively. In the illustrated embodiment, these mixing tools are in the form of plowshares.
The mixing tool 7 rotates close to the wall of the container 1, while the mixing tool 6 is located closer to the shaft 2 and rotates away from the wall of the container 1. Preferably, the mixing tool 6 is smaller than the mixing tool 7.

When the substances to be mixed are placed in the container 1 and, when the mixer is rotated, they accumulate in the lower region of the container 1 so as to present an inclined surface 8, the mixing tool 6
and 7 penetrate the material accumulated in the container 1 at different depths. The mixing tool 6 separates the substances to be mixed in front of the mixing tool 7, and the mixing tool 6 separates the substances to be mixed in front of the mixing tool 7.
Reduce the load on the This is particularly the case if the mixing mechanism is rotating at a relatively low speed and the material to be mixed is therefore primarily present in the lower region of the mixing vessel, through which the mixing device is forced to pass. This is true when the mixed substance is partially subjected to centrifugal swirling action.

[Brief explanation of the drawing]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawing is a cross-sectional view of an exemplary drum mixer according to the present invention with similar mixing implements mounted on radially extending arms of different lengths carried on the mixer's central shaft. 1...Drum-shaped container, 2...Drive shaft,
3, 4...Arm, 6,7...Mixing tool.

Claims (1)

[Claims for Utility Model Registration] 1. A container having a peripheral wall and a mixing mechanism that rotates concentrically with respect to the container, the container having a horizontal center axis that is also the rotation axis of the mixing mechanism. and the mixing mechanism includes a rotatably mounted shaft carrying at least a pair of radially extending arms each having a mixing tool, one mixing tool being positioned proximate the container wall, the other A mixer characterized in that the mixing tool is disposed at a position closer to the shaft in the radial direction than the one mixing tool and in front of the one mixing tool when viewed in the rotational direction of the mixing mechanism. 2. The mixer according to claim 1, wherein a plurality of the arm pairs are provided. 3. The arms of each pair of arms have different lengths, lie in a common radial plane, and have a mixing device disposed at their ends. The mixer according to item 2. 4. The other mixing tool is smaller than the one mixing tool in the scope of utility model registration claims 1 or 2.
The mixer described in section.