JPH0618583Y2 - Granulator for inorganic granular raw material for ceramic industry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an apparatus for producing granular raw materials for ceramic products such as tiles.

[Conventional technology]

The conventional technique of this type, which the inventor has known empirically, is to dry a ceramic inorganic clay in slurry form by a spray dryer.

[Problems to be solved by the invention]

When granulated by a conventional technique, it is used as a raw material for tiles because of its utilization such as having a uniform structure in the particles.

However, granulation with a spray dryer results in only a regular raw material having a low bulk density as a result of not compressing particles during granulation.

Therefore, when a ceramic product such as a tile is compression-molded as a raw material, the raw material easily adheres to the mold.

Therefore, there is a problem that it is necessary to repeatedly remove the deposited material.

Also, since the bulk density is low, the firing shrinkage rate is high,
When compression-molded and fired, there was a problem that a ceramic product in a regular form could not be obtained.

In addition, a proper amount of water is required for compression molding,
It was difficult to supply an appropriate amount of water to the raw material during compression molding.

In addition, the conventional raw materials are limited to those having a fixed form and size, so that the pattern embodied in the product is fixed and lacks in deformability.

This invention is intended to solve the above problems, and aims to obtain an inorganic raw material having a high bulk density for the ceramic industry, and also to obtain a raw material having an appropriate water content and an amorphous shape and size. It is also intended to obtain the raw material for Sasano.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention has a pair of drums that are rotatably provided in a horizontal direction, a hopper for supplying kneaded clay is arranged above these drums, and a heating mechanism is connected to these drums. And a scraper facing the outer peripheral surface of these drums, and a moisture replenishing mechanism is provided beside the scraper, and a pair of drums are provided rotatably in the horizontal direction. A hopper for kneading clay is placed above the
A heating mechanism is connected to these drums, a scraper faces the outer peripheral surface of these drums, a receiving device such as a gutter is provided below the scraper, and a kneading mechanism is provided in the receiving device. A pair of drums are rotatably provided in the horizontal direction, a receiving container for supplying kneaded clay is provided below these drums, and a part of the receiving container side of the drum is rotated in the receiving container. It is freely dipped, a heating mechanism is connected to the drums, a scraper faces the outer peripheral surface of these drums, and a moisture supply mechanism is provided beside the scraper. A receiving container is provided below the naive drum,
A device in which rotary blades are provided in the receiving container, a heating mechanism is continuously provided to the drums, a scraper faces the outer peripheral surfaces of these drums, and a moisture supply mechanism is provided beside the scraper Is.

[Action]

The ceramic inorganic kneaded clay in a slurry form containing a relatively large amount of water is supplied to a drum that is controlled to be heated at a constant temperature and rotates relatively slowly, in a constant amount.

Thus, the kneaded material is thinly adhered to the peripheral surface of the heated drum in a film shape and heated, and most of the water in the kneaded material evaporates.

Then, the kneaded clay adhering to the drum is scraped off by the scraper in contact with the outer peripheral surface of the drum.

In this case, a small amount of water is supplied to the kneaded clay immediately before being scraped, the kneaded clay at the time of scraping or the kneaded clay that is scraped and dropped.

[First Embodiment] The details of the first embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, a pair of drums 10 are horizontally provided adjacent to each other without a gap therebetween.

The insides of these drums 10 are provided in cavities, and the heating mechanism 2 is provided inside the cavities inside the drums 10 as will be described later.
0 hype is facing, for example 120-170 ℃
A configuration is adopted in which the steam can be supplied at a certain temperature to control the heating of the drum 10.

Although not shown in the drawings, since steam supplied into the drum 10 is discharged to the outside of the drum 10, a steam discharge pipe is connected to the other side of the drum 10.

The inventor also plans that the discharged steam is restored to the heating mechanism 20 and circulated.

Although steam is taken as an example of the heating means of the heating mechanism 20,
The heating means may be electrically controlled, and in principle, the heating means does not matter.

Further, these drums 10 are rotatably provided via a motor relatively slowly.

For example, it is controlled so as to rotate gently at a speed of about 2 to 8 / rpm.

Although it is disclosed in the drawings that the drum 10 rotates inward, the direction of rotation of the drum 10 does not matter in principle.

Since a slurry-like inorganic clay 12 for ceramics containing a relatively large amount of water, for example, about 36% of water, is supplied to the boundary of the drums 10, that is, the adjacent portion, the clay 12 is supplied.
A hopper 14 for storing the above is provided above the adjacent portion of the drum 10.

Then, the slurry-like kneaded clay 12 is supplied to the surface of the drum 10, adheres to the surface thereof, and scrapes off the thin, film-like kneaded clay 12 having a water content of about 2% while the drum 10 is gently rotated. Therefore, the tip 18 of the scraper 16 is provided in contact with the outer peripheral surface of the drum 10.

In the drawing, the scraper 16 is contacted obliquely upward from the storage box 22 side below the drum 10 to be described later, but the direction is not limited.

A storage box 22 for storing the raw material 24 scraped off by the scraper 16 is disposed below the drum 10 as in a commonly used technique.

Needless to say, the storage of the raw material 24 is not limited to dropping the raw material 24 into the storage box 22, and a belt conveyor may be used instead of the storage box 22 and, although not shown, it may be configured to be transported to the stockyard.

A heating mechanism 20 is provided on the side surface of the drum 10, and a pipe is connected to the side surface of the drum 10 to supply steam or the like to the drum 10.

Beside the outer peripheral surface of the drum 10, the raw material 2 having a dry and irregular shape and size when scraped off from the drum 10
A water supply mechanism 26 such as a spray is provided to supply a constant amount of water to the No. 4 unit.

It is preferable that the water supply mechanism 26 be provided near the contact position of the scraper 16 with respect to the drum 10 because the water can be uniformly and surely supplied.

However, the water supply mechanism 26 may be provided toward the raw material 24 scraped off by the scraper 16.

In this apparatus, the raw material 24 scraped off by the scraper 16 necessarily had an irregular size and shape (according to the experiment of the inventor, the size was about 0.1 to 10 mm. Was completely amorphous).

However, when ceramic products such as tiles were produced by using the raw material 24 of this irregular shape and size, the conventional product was only able to obtain a stylized pattern (spotted pattern) on the surface. There is a benefit in obtaining a product that expresses a novel, irregularly-shaped spotted pattern.

The reason for supplying water to the once dried raw material 24 is as follows.

When the raw material 24 is obtained by drying the kneaded clay 12 in a slurry state, it is necessary to remove water to the maximum in order to obtain the raw material 24 having a high bulk density. On the other hand, ceramic products such as tiles are compressed. This is because the molding is generally extremely difficult when it does not contain about 8 to 9% of water.

Therefore, when water is supplied by the water supply mechanism 26, the size and shape of the raw material 24 are not destroyed,
There is a profit that can be produced in an irregular shape.

[Example 2] This example, which is shown in Fig. 2, is an apparatus for obtaining a raw material 24 for a ceramic product having a fixed shape.

However, except for the water supply mechanism, there is essentially no difference from the first embodiment.

A pair of drums 10 are provided, a hopper 14 for accommodating the kneaded clay 12 is provided above the adjacent portion of the drum 10, and the mounting angle is different from that of the first embodiment, but the scraper 16 is the drum 10. Is the same as in the first embodiment, and that the heating mechanism 20 for heating the drum 10 is provided beside the drum 10.

However, the configurations are different in the following points.

In the first embodiment, the amorphous raw material 24 scraped off by the scraper 16 is the water supply mechanism 2 such as a spray.
The water is supplied to the surface layer of the raw material 24 by 6 and dropped into the storage box 22, but in this embodiment, the amorphous raw material 24 scraped off by the scraper 16 is used.
Is configured to be received by a receiver 28 such as a gutter provided below the scraper 16.

A kneading mechanism 30 such as a screw conveyor device is provided in the receiver 28.

When the kneading mechanism 30 is a screw conveyor device,
There is an advantage that the kneaded raw material 24 can be conveyed in the next step.

A water replenishment mechanism 32 such as a pipe having a small hole is provided on the receiver 28 so as to replenish a certain amount of water controlled by a metering pump.

In this embodiment, the amorphous raw material 24 scraped off by the scraper 16 is kneaded by the kneading mechanism 30, and the amorphous raw material 24 is standardized, so that the amorphous raw material 24 cannot be obtained. However, on the other hand, there is an advantage that a fixed-form raw material containing water uniformly can be obtained.

In the first embodiment, water is replenished from the drum 10 to the raw material 24 or the like that is falling, so there is an inconvenience that it cannot be expected to sufficiently replenish water to the inside of the raw material, but in this embodiment, it is uniform. After the water is replenished by the water replenishment mechanism 32, it is kneaded by the kneading mechanism 30 and is intended to be supplied to a storage box or the like in the next step (not shown). It is what is done.

In this example, the raw materials kneaded in the subsequent process are
It is planned that the material is compression-molded, and the compression-molded raw material is crushed to have an appropriate size and shape, and further, to have a particle size of an appropriate size.

In this example, since the purpose is not to obtain the irregular-shaped raw material 24 as described above, the tool for scraping off the dried raw material 24 attached to the drum 16 is not limited to the scraper 16 and may be a tool such as a brush. Well, a coarse non-woven fabric can be planned, and the means is not limited as long as it has a scrapable function.

Example 3 This example is shown in FIG.

This is an example in which the receiving container 34 of the kneaded clay 12 is provided below the pair of drums 10, and the receiving container 34 of the rotating drum 10 is shown.
A part of the side is rotatably immersed in the receiving container 34.

Therefore, when the drum 10 rotates in the receiving container 34, the slurry-like kneaded clay 1 stored in the receiving container 34
2 is attached to the surface of the drum 10.

Similar to the second and third embodiments, a heating mechanism 20 for heating the drum 10 is provided beside the drum 10 together with the fourth to sixth embodiments described below.

Further, the scraper 16 is provided in contact with the drum 10 as in the first and second embodiments.

In this embodiment, a receiver 28 is provided below the scraper 16 as in the second embodiment, and the kneading mechanism 3 is provided in the receiver 28.
0, and on the receiver 28, a hydration mechanism 32
Is provided.

Further, as shown by phantom lines in the drawing, instead of the hydration structure 32 such as a hype, a hydration mechanism 26 such as a spray may be provided beside the scraper 16 as in the first embodiment.

Example 4 This example is an example shown in FIGS. 4 to 6.

In these examples, one drum 10 is used.

In the example shown in FIG. 4, a receiving container 34 for accommodating the slurry-like kneaded clay 12 is provided below the drum 10, and a rotary vane 36 is provided in the receiving container 34, and the receiving container 3 is provided.
This is because the kneaded material 12 is splashed onto the surface of the drum 10 for the purpose of mixing the slurry-shaped kneaded material 12 in the container 4 in the container 34.

The configurations of the scraper 16, the heating mechanism 20, the receiving member 28, and the water supply mechanism 32 are the same as those in the second embodiment.

The configuration of the water supply mechanism 26 such as a spray is the same as that of the first embodiment.

The example shown in FIG. 5 is substantially the same as the apparatus shown in FIG. 4, but the rotary blade 38 in the receiving container 34 is simply the slurry-like kneaded material 12 in the receiving container 34. It has a function of mixing so that it does not precipitate at.

In the example shown in FIG. 6, a hopper 14 is provided above the drum 10.
Is provided.

Scraper 16, heating mechanism 20, hydration mechanism 26,
The configurations of the receiver 28, the hydration mechanism 30, the hydration mechanism 32, etc. will be understood with reference to the configurations of the above-described embodiments.

In this example, since the bottom side of the popper 14 shown in FIG. 7 is opened, the blocking plate 40 made of a heat-resistant plastic sheet or the like is provided so that the slurry-like kneaded clay 12 does not leak to both sides of the drum 10. Is provided in contact with the side surface of the drum 10 via a stopper 42.

Although not shown, a discharge hole may be provided in the bottom of the bottomed hopper and the slurry-like kneaded clay 12 may be supplied from the discharge hole.

[Effect of device]

Since the present invention has the above-mentioned configuration, it has the following advantages.

The slurry-like inorganic clay for ceramics is dried into a thin film through a controlled heating drum and then scraped off with a scraper to obtain a raw material, so that the raw material is produced in a compressed atmosphere.

Therefore, the raw material has a significantly higher bulk density than the conventional product.
Further, since the raw material can be replenished with necessary water, the compression molding can be easily carried out.

In addition, when replenishing water when scraping off the kneaded clay,
Raw materials can be produced in irregular shapes and sizes.

Further, a kneaded material can be obtained by kneading the scraped material while supplying water.

When the kneading mechanism is provided, the amorphous raw material is formulated, and the regular raw material uniformly containing water is obtained.

Also, if a part of the drum is immersed in the receiving container,
You can easily control the supply of kneaded material compared to other examples,
Further, when the rotary blade is provided in the receiving container, the kneaded material can be supplied more reliably.

[Brief description of drawings]

FIG. 1 is a side view of the first embodiment, FIG. 2 is a side view of the second embodiment, FIG. 3 is a side view of the third embodiment, and FIGS. 4 to 6 are side views of other embodiments. FIG. 7 is a sectional view of an essential part of FIG. (Explanation of symbols of main parts) 10 …… drum 12 …… hopper 14 …… scraper 16 …… scraper tip 18 …… storage box 20 …… heating mechanism 26 …… hydration mechanism 28 …… receiver 30 …… Kneading mechanism 32 ... Hydration mechanism

Claims (4)

[Scope of utility model registration request] 1. A pair of drums 10 are rotatably provided in a horizontal direction, a hopper 14 for supplying kneaded clay is arranged above the drums 10, and a heating mechanism 20 is connected to the drums 10. Moreover, the scraper 16 faces the outer peripheral surface of these drums 10.
A granulating apparatus for inorganic granular raw material for ceramics, characterized in that a water supply mechanism 26 is provided beside 6. 2. A pair of drums 10 are rotatably provided in a horizontal direction, a hopper 14 for supplying kneaded clay is arranged above the drums 10, and a heating mechanism 20 is connected to the drums 10. Further, the scraper 16 faces the outer peripheral surface of these drums 10, and a receiver 28 such as a gutter is provided below the scraper 16, and the kneading mechanism 30 is provided in the receiver 28. Characteristic granulator for inorganic granular raw materials for the ceramic industry. 3. A pair of drums 10 are rotatably provided in a horizontal direction, a receiving container 34 for supplying kneaded clay is provided below the drums 10, and a part of the drum 10 on the receiving container 34 side is provided. The drum 10 is rotatably dipped into the drum 10, the heating mechanism 20 is connected to the drum 10, and the scraper 16 faces the outer peripheral surface of the drum 10. The moisture supply mechanism 26 is provided beside the scraper 16.
An apparatus for granulating an inorganic granular raw material for a ceramic industry, comprising: 4. A receiving container (34) is provided below one rotatable drum (10), and a rotary blade (36) is provided in the receiving container (34).
Is provided, the heating mechanism 20 is connected to the drum 10, and the scraper 1 is attached to the outer peripheral surface of these drums 10.
6. A granulating apparatus for inorganic granular raw materials for ceramics, characterized in that 6 is exposed, and a water replenishing mechanism 26 is provided beside the scraper 16.