JP2850112B2 - Rotary drum for mixer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rotary drum for a mixer used for mixing or kneading plural kinds of materials in concrete kneading, fertilizer production and the like.

[0002]

2. Description of the Related Art A conventional rotary drum for a mixer is configured such that both ends of a cylinder are gradually reduced, and one end is closed to form a bottom. As a result, those that mix or knead a plurality of types of powders, granules, small lumps, or liquids have been widely used.

[0003]

The above-mentioned conventional rotary drum for a mixer has a problem that the stirring at the bottom portion is not sufficiently performed, and a problem that the agitated material is clogged at the base of the stirring blade after use and is difficult to come out. There was a problem that cleaning (washing) was very troublesome.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention provides a rotary drum having a novel structure based on an idea which is not restricted to the conventional one. The bottom can be sufficiently stirred, and the mixture whose stirring has been completed can be easily taken out and does not remain in the rotating drum.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The rotary drum for a mixer of the present invention
The body of a rotary drum for a mixer for mixing or kneading a plurality of kinds of powders, granules, small agglomerates or liquids is formed with a cross section having a contour of 3 to 5 petals, and a front end of the body. Is gradually reduced to open a front end in a circular shape, close a rear end to form a bottom, and a triangular pyramid or a quadrangular pyramid is fixedly or detachably protruded from the center of the inner surface of the bottom.

[0006]

Embodiments will be described with reference to the drawings.
FIG. 1 shows a side view of an embodiment in which the present invention is applied to a simple movable concrete mixer. FIG. 2 shows a side view of a rotary drum 10 shown in FIG. 1. The body 11 has an outer periphery of 4 as shown in FIG.
A petal-like contour, that is, four arcs 12 are continuously formed in a cylindrical shape, and each of the arcs 12 has a gradually changing radius of curvature at the front and rear ends, and a circle connecting the vertices of the four arcs 12 is gradually reduced to a front end. Is a circular opening 13 shown in FIG. 3, and a rear end is a bottom 14 similarly closed in a circular shape. As shown in FIG. A triangular pyramid 15 protrudes.

The four arcs 12 may be three or five, and the triangular pyramid 15 may be a quadrangular pyramid. 1
Reference numeral 6 denotes a support shaft, which is rotatably supported by a bearing 18 provided on a hand truck 17 as shown in FIG. 1, and which is driven by a belt or a chain 20 from an engine 19 as a drive source via a speed reducer (not shown). Driven.

By rotating the rotary drum 10 of the present invention,
The joint portion of the four arcs 12 forms a ridge 12a on the inside to serve as a conventional stirring blade, and the triangular pyramid 1 at the bottom.
No. 5 achieves good mixing and kneading at the bottom center portion where mixing or kneading is difficult.

When the mixing or kneading material is taken out by inclining the rotating drum 10 so that the circular opening 13 faces downward, there is no sharp angle space in the rotating drum 10 as formed by a conventional stirring blade. Also, the phenomenon that the kneaded material remains clogged does not occur, and cleaning and cleaning after use is easy.

The simple moving concrete mixer shown in the present embodiment is a utility model registration No. 1971573 related to the application of the present inventor whose main purpose is to continue kneading while transporting ready-mixed concrete at a construction site by human power. It is an improvement of the rotating drum of the concrete mixer, but it is also possible to add concrete, cement, sand, gravel, water, and other necessary additives, which are concrete raw materials, through the circular opening 13 to newly knead the concrete. Of course it is possible,
It is convenient for use in various works.

[0011]

The present invention is embodied in the form described above and has the following effects.

By providing a triangular pyramid or quadrangular pyramid at the center of the bottom of the rotary drum of the present invention, the bottom which is difficult to stir can be well stirred to enhance the mixing or kneading effect.

[0013] By eliminating the conventional inclined stirring blades by forming the body of the rotary drum in a cross-sectional shape having a contour of 3 to 5 petals, it does not remain in the rotary drum when the mixed or kneaded material is taken out. It is discharged cleanly and can be easily cleaned and cleaned after use.

[Brief description of the drawings]

FIG. 1 is a side view showing an example in which the present invention is applied to a simple movable concrete mixer.

FIG. 2 is a side view showing an example of the rotary drum for a mixer of the present invention.

FIG. 3 is a front view of FIG. 2 as viewed from the tip.

FIG. 4 is a cross-sectional view of the AB gland of FIG. 2;

[Explanation of symbols]

 Reference Signs List 10 rotating drum 11 trunk 12 arc 13 circular opening 14 bottom 15 triangular pyramid 16 support shaft 17 hand truck

Claims (1)

(57) [Claims] 1. A body of a rotary drum for a mixer for mixing or kneading a plurality of kinds of powders, granules, small agglomerates or liquids, is formed to have a cross-sectional shape of 3 to 5 petals, That the front end of the body is gradually reduced to open the front end in a circular shape, the rear end is closed to form a bottom, and a triangular pyramid or a quadrangular pyramid is fixedly or detachably protruded at the center of the inner surface of the bottom. A rotary drum for mixers.