JPH0675669B2 - Compressive granulation equipment for ceramic raw materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to, for example, the preparation of colored granular raw materials of any size for producing tiles having a mottled pattern. The present invention relates to a compression granulator for a ceramic raw material suitable for the purpose of use.

(Prior Art) A large-scale compression granulating apparatus as shown in FIG. 6 has conventionally been used to prepare the above-mentioned granular ceramic material.

This device has a pair of compression rollers 50, 51 and its drive mechanism as a main body, and the ceramic raw material in the raw material tank 52 is supplied to a hopper 54 directly above the main body by a first conveyor 53, and the compression rollers 50 The raw material supplied to the gap between the and 51, 51 is compressed and mixed, and then the second conveyor below it.
After falling onto 55, it is supplied to a slanted sieve 56, fine powder is separated with mushrooms, and the particle size is adjusted to a desired particle size by a net crusher 57.

Then, the fine powder that has passed through the sieve 56 is returned to the hopper 54 by the third conveyor 58.

(Problems to be Solved by the Invention) As described above, the conventional compression granulating apparatus for a ceramic raw material has a configuration in which sieves, pulverizers, etc., which are spaced apart from each other, are connected to each other by a plurality of conveyors. As a result, the entire device becomes large, and it requires a considerable amount of floor space for installation.
It was also uneconomical in terms of power costs.

Further, it takes a lot of time and effort to adjust the device for adjusting the crushed particles to a desired particle size.

Therefore, an object of the present invention is to compact the outer shape of the pottery raw material compression granulating apparatus so that the installation floor area and power cost can be reduced and the crushed particle size can be easily adjusted. To provide.

[Structure of the Invention] (Means for Solving the Problems) The present invention made to achieve the above object is to produce a ceramic tile having a speckled pattern when mixed with the raw material of the ceramic tile and fired. An apparatus for producing a colored granular raw material capable of: a frame and a predetermined position of the frame,
A pair of compression rollers that are axially attached to each other through a gap, a drive unit that drives the pair of compression rollers, a processing raw material supply unit provided near the gap between the pair of compression rollers, and the gap. In a compression granulating apparatus for a ceramic raw material, comprising a rotating body with a crushing blade provided in the vicinity of the lower part of the section, and a variable drive section for driving the rotating body with the crushing blade, the drive section is
The pair of compression rollers are each a variable speed motor that individually drives at a variable speed, and the rotating body with a crushing blade has a long strip plate blade on which sawtooth or corrugated irregularities are previously formed. The gist is a compression granulating apparatus for a ceramic raw material, which is characterized in that it is provided at four locations at equal intervals.

(Operation) In the compression granulating apparatus for a ceramic raw material of the present invention, first, when power is applied to a variable speed motor that individually drives a pair of compression rollers at variable speeds, the pair of compression rollers have different rotation speeds. Start rotation with. Therefore, the ceramic raw material used as the colored granular raw material is dropped into the processing raw material supply unit. Then,
The ceramic raw material falls on the upper surface of the pair of compression rollers, and is compressed so that it is pushed into the roller surface of the roller with slow rotation speed by the roller surface of the roller with fast rotation speed inside the pair of compression rollers with different rotation speed. -Like solid, which is extruded downward from the gap. At this time, below the gap, the variable drive unit drives the rotator with crushing blades, which has long strips of blades with serrated or wavy unevenness formed at the tip at equal intervals at four locations on the outer peripheral surface. Therefore, the semi-kneaded ceramic raw material extruded downward from the gap is crushed into small pieces by a long strip blade having sawtooth or wavy irregularities formed from the tip thereof and granular colored granular raw material. Become.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, the schematic structure of the device of the present invention will be described with reference to FIG. 1. A pair of compression rollers 4 and 5 are provided on the gate-shaped columns 2 and 3 which are erected at a predetermined interval on the pedestal 1 of the device. , Are arranged horizontally through the gap A, and immediately below the gap A,
In the axial direction of the outer peripheral surface of the cylindrical rotary body 6, a rotary body 8 with a crushing blade, in which a plurality of crushing blades 7 are attached in parallel and replaceably, is installed.

Next, the detailed configuration will be sequentially described. Bearings 9 and 10 of the shafts 4a and 5a of the compression rollers 4 and 5 are attached to the side surfaces of the columns 2 and 3 so as to face each other.

The compression rollers 4 and 5 are made of cemented steel and have been hardened and polished.

Reference numeral 11 is a screw rod for adjusting the gap width of the gap A, one end of which is rotatably locked to a metal fitting 12 provided on the top of the column 3, and the other end of which is provided on the top of the column 2. Screw hole 13a of metal fitting 13
It is screwed in the inserted state. Reference numeral 14 denotes a handle fitted to this insertion end of the screw rod 11. When the handle 14 is turned, the support column 2 is rotated in the left-right direction in the drawing with the lower end portion as a fulcrum to adjust the width of the gap A. It has become like.

Reference numeral 15 denotes a disk-shaped brim that is attached to both end surfaces of the compression roller 4 in a state of abutting, and its outer peripheral edge portions are slidably contacted with both end surfaces of the compression roller 5, so that both end portions of the gap A are closed. The material is prevented from leaking from this side edge.

Reference numerals 16 and 17 denote variable speed motors installed on the gantry 1, respectively, and drive the compression rollers 4 and 5 via a transmission belt.

Reference numeral 18 denotes a raw material hopper that supplies ceramic raw material to the gap A between the pair of compression rollers 4 and 5.

Next, the rotator 8 with a crushing blade has the configuration shown in FIGS. 3 to 5.

That is, the cylindrical rotating body 6 forming the main body of the rotating body 8 with a crushing blade
Has its shaft 19 supported by a pair of bearings 20 on the mount 1,
19 is driven by a variable speed motor 21, which is installed on the gantry 1 and serves as a driving means for the rotating body 8 with a crushing blade.

As shown in FIG. 3, the tubular rotating body 6 has a form in which a plurality of disc bodies 22 are axially fitted to a shaft 19 at predetermined intervals, in this case. Each disk body 22 is provided with screw holes at a plurality of locations on the outer peripheral surface thereof, which are spaced at equal intervals, in this case, four locations.

The crushing blade 7 attached to the cylindrical rotating body 6 is made of a metal strip plate, and as shown in FIGS. 5A to 5E, an appropriate uneven shape such as a sawtooth shape or a wavy shape is formed on the longitudinal edge thereof. Is giving. However, such unevenness may not be provided depending on the desired crushed particle size. These crushing blades 7a to 7e are provided with bolt holes a at three positions at intervals corresponding to the intervals between the disc bodies 22.

As shown in FIGS. 3 and 4, the crushing blade 7 is screwed into its screw hole with a bolt 23 in a state of being parallel to the shaft 19 and straddling the three disk bodies 22. There is. The crushing blade-equipped rotating body 8 assembled in this manner has a shape like a cylindrical basket as a whole.

Reference numeral 24 is a conveyor that receives the processed raw material compressed and crushed by the pair of compression rollers 4 and 5 and the rotator 8 with a crushing blade, and conveys it to a predetermined place.

Next, the operation of the above configuration will be described mainly with reference to FIG.

First, in order to set the width of the gap A between the pair of compression rollers 4 and 5 to an optimum width determined based on experience, depending on the type of the ceramic raw material and the desired crushed particle size. On the handle 14
Is appropriately rotated.

On the other hand, also for the rotor 8 with a crushing blade, the optimum type of crushing blade 7 determined based on experience is selected so as to match the properties of the ceramic raw material to be treated and the desired particle size or shape of the particles, Attach to the cylindrical rotating body 6.

Next, the rotation speeds of the variable speed motors 16, 17, 21 are also set to values suitable for the type of processing raw material and the desired particle size.

Then, when each of the variable speed motors 16, 17, 21 is driven to start supplying the ceramic raw material from the raw material hopper 18 to the gap portion A of the pair of compression rollers 4, 5, the raw material containing water is When the mixed raw materials are strongly pressed while being forcedly passed through the gap A, they are subjected to an effective mixing action to increase the bulk specific gravity to form a densified plate-like body, which is below the gap A. Are continuously discharged.

In this compression process, in the conventional apparatus, a considerable amount of the raw material subjected to the compressive force spills out from both ends of the gap between the pair of compressing rollers to the side, and the widthwise direction of the compressing rollers still remains. Although there is a problem that the compressed state becomes uneven, in the above configuration, since both ends of the gap portion A are closed by the flanges 15, such a problem can be solved together.

The plate-like compressed raw material discharged downward from the gap A is crushed to a desired particle size by the rotating crushing blade 7 of the crushing blade-equipped rotor 8 located immediately below the gap A. The crushed processed ceramic raw material is received by the conveyor 24 below and is transported to a predetermined storage location.

As described above, according to the above configuration, the external dimensions can be made much more compact than the conventional device shown in FIG. 6, so that the installation space can be remarkably reduced and the device can be maintained and inspected daily. Remarkable reduction of work and saving of power costs are achieved.

Naturally, the crushed particle size of the raw material can be easily and quickly changed to a desired particle size by simply changing the rotation speed of the crushing blade-equipped rotor 8 or replacing the crushing blade 7 with a different type. It has various excellent features that were not expected of conventional devices.

In the above structure, the rotator 8 with a crushing blade is not limited to the structure shown in the drawing, and the design can be changed as appropriate, for example, by forming the crushing blade in a cut and raised shape on the outer peripheral surface of the steel plate cylinder. is there.

[Effects of the Invention] As is clear from the above description, according to the compression granulating apparatus for a ceramic raw material according to the present invention, there are excellent practical effects as listed below, and there is a place to benefit the related industry. Extremely large.

a) Compared with the conventional structure in which a plurality of conveyors are connected to each other, such as a compression roller, a sieving device, and a crushing device, which are installed at a distance from each other, the whole device can be made much more compact.

b) Therefore, the manufacturing cost of the entire apparatus can be reduced, the operating cost can be greatly saved, and the space required for installing the apparatus can be reduced.

c) The particle size or shape of the treated raw material can be easily changed only by changing the rotation speed of the rotor with a crushing blade, the type of the crushing blade, and the like.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a front view, FIG. 2 is a schematic plan view, and FIGS. 3 and 4 are front views of a rotary body with a crushing blade. Side views and a to e of FIG. 5 are plan views showing five examples of the shape of the crushing blade. FIG. 6 is a sketch of a conventional device. CODE TABLE 1 …… Stand, 2,3 …… Stands 4,5 …… Compression roller, 6 …… Cylindrical rotating body 7,7a to 7e …… Crushing blade 8 …… Rotating body with crushing blade, 9,10… … Bearing 11 …… Screw rod, 12,13 …… Metal fitting 14 …… Handle, 15 …… Tsukuba 16,17 …… Variable speed motor 18 …… Material hopper, 19 …… Shaft 20 …… Bearing 21 …… Variable speed motor (Driving means) 22 ... Disk, 23 ... Bolt 24 ... Conveyor A ... Gap, a ... Bolt hole 50,51 ... Compression roller 52 ... Raw material tank 53, 55, 58 ... Conveyor 54 …… Hopper 57 …… Net crusher

Claims (1)

[Claims] 1. An apparatus for producing a colored granular raw material capable of forming a ceramic tile having a speckled pattern when mixed with a raw material for a ceramic tile and fired, comprising a frame body and a predetermined frame body of the frame body. At a position, a pair of compression rollers axially attached to each other through a gap, a drive unit that drives the pair of compression rollers, and a processing raw material supply unit provided near the gap between the pair of compression rollers. In the compression granulating apparatus for a ceramic raw material, which comprises a rotating body with a crushing blade provided near the lower part of the gap and a variable drive unit for driving the rotating body with a crushing blade, the drive unit comprises: Each of the compression rollers is a variable speed motor for individually driving at a variable speed, and the rotating body with the crushing blade has a long strip plate blade having a sawtooth-shaped or wavy unevenness at the tip thereof on the outer peripheral surface. That we prepared for the place at equal intervals Compression granulator ceramic raw material to symptoms.