JPH0590B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an apparatus for mixing and crushing various raw materials, which is suitable for use, for example, for mixing and crushing raw materials for ceramics.

(Prior art) Conventionally, for example, in order to produce a tile with a spotted pattern, first, a coloring material is applied to the surface to create a granular ceramic raw material, and multiple types of granular ceramic raw materials of different colors are mixed together. The method used was to press-form them into tiles and then fire them.

Conventionally, in order to coat the granular ceramic raw material with the coloring agent, the granular ceramic raw material and the coloring agent, which is made into a slurry by adding water, are mixed in a drum equipped with stirring blades, such as a concrete mixer. It depends on the method of mixing.

(Problem to be Solved by the Invention) However, according to the conventional method described above, the colorant in the form of a slurry penetrates deeper than necessary into the granular ceramic raw material, and the expensive coloring material is wasted. This was causing a problem where it was consumed.

Furthermore, when press-molding the granular ceramic raw material into the shape of a tile, excess moisture is squeezed out into the mold, resulting in defective molded products.

Therefore, it is possible to mix the coloring material into the powder or granular ceramic raw material and apply it, but with this method, the coloring material is simply sprinkled on the surface of each particle, ensuring that the required amount of coloring material is applied. It was not possible to make it adhere to the surface.

Therefore, an object of the present invention is to, for example, when mixing a coloring material into a granular ceramic raw material, apply an appropriate amount of the coloring material to the surface of the granular ceramic raw material evenly and reliably. It is an object of the present invention to provide an apparatus for mixing and crushing various raw materials, which has improved mixing efficiency compared to conventional ones and can also provide a crushing function as required.

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, the powder and
The granule mixing device includes: a rectangular rotating drum 5; a plurality of stirring shafts 16, 18 provided in the rectangular rotating drum 5 in directions crossing each other; and stirring members attached to the stirring shafts 16, 18. 1
7, 19; rotating means for each of the plurality of stirring shafts 16, 18; and raw material supply means 22 for supplying raw materials to be mixed into the rectangular rotating drum 5.

(Function) The raw materials to be mixed supplied into the rectangular rotating drum 5 are stirred by stirring members respectively attached to a plurality of stirring shafts 16 and 18 disposed in the rectangular rotating drum 5 in similar cross directions. 17 and 19, the mixture is subjected to a complicated stirring action and is also rolled within the rectangular rotating drum 5, so that an extremely highly efficient mixing action is performed.

As the rotation speed of the stirring shafts 16 and 18 increases, the stirring members 17 and 18 begin to crush the raw materials to be mixed.

(Example) An example of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is the machine frame of the mixing/shredding device, and a pedestal 3 is erected at the left end (in the figure) of the pedestal 2.
The right end has a configuration in which a gate-shaped support 4 is erected.

Reference numeral 5 denotes a rectangular parallelepiped-shaped rotating drum, the axial direction of which is oriented horizontally, and one end wall 5 in the axial direction.
A rotary shaft 6 is provided in the center of a to project outward, and a cylindrical shaft 7 is provided in the center of the other end wall 5b to project outward. The rotating shaft 6 is supported by a bearing 8 provided on the pedestal 3, and the cylindrical shaft 7 is supported by a pair of rollers 9, which are provided on the portal support 4 at a predetermined distance, as shown in FIG. 9
It is widely supported.

A raw material supply port 10 having a diameter corresponding to the inner diameter of the cylindrical shaft 7 is provided in the end wall 5b. or,
As shown in FIG. 2, one of the four circumferential walls of the rectangular rotating drum 5 has an outlet 11 for taking out mixed raw materials.
has been established. Reference numeral 12 denotes a slide shutter for opening and closing this outlet 11, and is opened and closed by being transmitted with the reciprocating motion of a screw rod 14 rotated by a motor 13.

Furthermore, in order to form the inside of each ridge of the rectangular rotating drum 5 at an obtuse angle, each ridge is formed into a chamfered shape (see FIG. 1), or a swash plate a is provided at the inside corner of each ridge.
(See Figure 2).

In FIG. 1, reference numeral 15 denotes a variable speed motor that rotates a rotating shaft 6, which is installed on the pedestal 3.

Reference numeral 16 denotes a first stirring shaft, which is installed across the central portions of one of the opposing peripheral walls 5c and 5d constituting the peripheral wall of the rectangular rotating drum 5, and has a stirring member 1 near each end thereof.
7 and 17 are attached.

In FIG. 2, reference numeral 18 denotes a second stirring shaft, which is installed across the center portions of the other opposing circumferential walls 5e and 5f of the rectangular rotating drum 5, with stirring members 19 and 19 near both ends thereof, respectively. It is attached.

Both of these stirring members 17 and 19 are bar-shaped, and are provided with small protrusions at appropriate intervals in the longitudinal direction, and their intermediate portions are fixed perpendicularly to the stirring shafts 16 and 18.

Variable speed motors 20 and 21 rotate the first stirring shaft 16 and the second stirring shaft 18, respectively, and are attached to the outer wall surface of the rectangular rotating drum 5.

In FIG. 1, 22 is a screw conveyor, and the raw material outlet side of its cylindrical casing 23 is press-fitted onto the cylindrical shaft 7. 24 is a motor that drives this screw conveyor 22, 25 is a raw material hopper, and together with the screw conveyor 22,
It constitutes a raw material supply means.

The operation of the above configuration will be explained below.

First, the shutter 12 of the outlet 11 of the rectangular rotating drum 5 is closed, and each motor 15, 20, 2 is closed.
1 and 24 to start the mixing device.

After that, when the raw material to be mixed is put into the raw material hopper 25, the raw material to be mixed is transferred to the screw conveyor 2.
2 into the rectangular rotating drum 5 which is being rotated.

The raw materials to be mixed that have fallen into the rectangular rotating drum 5 are
First and second stirring shafts 1 are provided in a manner that intersects with each other.
The stirring members 17 and 19, which are attached to the rotating drums 6 and 18 and are rotating, receive an extremely complicated stirring force in three-dimensional directions, and also roll along the inner wall surface of the rotating rectangular rotary drum 5. Because this movement is repeated, the mixing action is far more efficient than that of conventional mixing devices such as concrete mixers.

If the rotational speed of the stirring shafts 16 and 18 is increased, the stirring members 17 and 19 rotating at high speed will also have the effect of striking and crushing the raw materials to be mixed.

In the above configuration, the number of stirring shafts may of course be two or more, the shapes of the stirring members 17 and 19 are not limited to those shown in the drawings, and the number of squares of the rectangular rotating drum 5 may be four or more. The purpose of the present invention can be achieved even if the detailed structure is changed as appropriate.

[Effects of the Invention] As is clear from the above explanation, according to the powder/granule mixing and crushing device of the present invention, the raw materials to be mixed supplied into the rectangular rotating drum are:
While being subjected to rolling motion within the drum, the stirring members attached to multiple stirring shafts installed in an intersecting manner within the drum cause the stirring members to roll within the drum while being subjected to a complex stirring action. As a result, it exhibits far superior stirring performance compared to, for example, concrete mixer type concrete mixers equipped with a conventional single stirring shaft.

If the rotation speed of the stirring shaft is increased, a highly efficient crushing action will also be produced.

Therefore, the size of the mixing/stirring device can be made smaller compared to conventional ones, and accordingly, installation space and operating costs can be reduced.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a partially cutaway front view and FIG. 2 being a side view. Code list, 1... Machine frame, 2... Base, 3... Frame, 4... Portal support, 5... Square rotating drum, 5
a, 5b... End wall, 5c to 5f... Opposing peripheral wall,
6... Rotating shaft, 7... Cylindrical shaft, 8... Bearing, 9...
...roller, 10...raw material supply port, 11...takeout port,
12...Shutter, 13, 24...Motor, 14
...Screw rod, 15, 20, 21...Variable speed motor,
16... first stirring shaft, 17, 19... stirring member,
18... Second stirring shaft, 22... Screw conveyor (raw material supply means), 23... Cylindrical casing,
25...Raw material hopper.

Claims (1)

[Scope of Claims] 1. A rectangular rotating drum 5, a plurality of stirring shafts 16, 18 provided in the rectangular rotating drum 5 in directions crossing each other, and a stirring member attached to the stirring shafts 16, 18. 1
7, 19, rotating means for each of the plurality of stirring shafts 16, 18, and a raw material supply means 22 for supplying raw materials to be mixed into the rectangular rotating drum 5. Device.