JPS5973036A - Granulation coating apparatus - Google Patents

Abstract

PURPOSE:To enhance the productivity of a product high in sphericity, by providing a disintegrating means to the upper part of a rotary plate leaving a slit between said plate and a barrel body part and rotating almost in a horizontal direction to perform comminution. CONSTITUTION:A rotary disc 5 is provided to the bottom part in a granulating cylinder 1 and a stirring boade 6 for stirring a particulate material during granulation coating is provided to the upper side of the rotary disc 5 in a state rotatable in a horizontal direction. A disintegrating mechanism 38 is provided to the granulation cylinder 1 toward the cylinder inside from the lateral side of said cylinder 1 almost in a horizontal direction above the peripheral side of the stirring blade 6. The disintegrating means 38 is constituted by providing a plurality of triangle disintegrating blades 41 to the periphery of a disintegrating shaft 40 rotated by an electromotive or pneumatic motor 39 in a protruded state toward the radius direction. The disintegrating blades 41 are rotated at a high speed faster than the rotary speeds of the rotary disc 5 and the stirring blade 6 in a particulate material layer. By this mechanism, a spherical granulation coating product is obtained in good productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a granulation and coating apparatus, particularly for granulation and granulation of powder and granules.
The present invention relates to a granulation coating device capable of performing coating, mixing, drying, etc. with high productivity to obtain a granulation coating product with uniform particle size and high sphericity.

Generally used for example in medicine, food, seasoning, powder metallurgy materials,
BACKGROUND ART Various types of mechanical devices have been used for granulation, coating, mixing, drying, etc. of powder and granules used in catalysts, ferrites, ceramics, detergents, cosmetics, dyes, pigments, toners, etc.

One such conventional device is disclosed in German Patent No. 2738485 and German Patent No. 2805397, in which a wire mesh is provided at the bottom of a granulation cylinder and a rotating disk is provided at the top of the wire mesh. However, although this conventional device is capable of granulation coating, the problem is that the granules get caught between the rotating disk and the wire mesh, and are crushed by being rubbed against the wire mesh by the rotation of the rotating disk. There is a point. In addition, this conventional device has the disadvantage of powder leakage from the wire mesh, and it is impossible to control the bulk density of the granules, which means that only heavy particles can be granulated, resulting in uneven particle size distribution. There is a drawback. Furthermore, this conventional apparatus has a serious problem of low productivity.

Furthermore, as another conventional technique, a structure has been proposed in which a stirring blade is provided inside the processing container and a granulation blade is provided on the upper side of the stirring blade. However, although this conventional equipment has relatively good productivity, the shape of the granulated coating is irregular, making it difficult to make it spherical, and the particle size is also irregular, making it impossible to obtain the desired uniform particle size. There is a problem. Additionally, this conventional apparatus has the drawback that it is extremely difficult to dry the granulated coating material and requires separate drying equipment.

Furthermore, Time MBE-35891 discloses a granulation device in which this conventional device is provided with a gas introduction slit from the side surface of the container, but this prior art also has the same problems as the conventional device except for drying. There are similar problems.

The object of the present invention is to solve the problems of the prior art as described in 81.
It is an object of the present invention to provide a granulated coating device capable of obtaining a granulated coating product with uniform particle size and high spherical shape with good productivity.

In order to achieve this objective, the granulation coating device according to the present invention uses a crushing means provided on the upper part of a rotary plate which has a slit between it and the body and rotates in a substantially horizontal direction to granulate the particles before pulverizing them. It is characterized by coaching.

Further, in the present invention, a stirring member that rotates independently of the rotary plate can be provided above the rotary plate.

Hereinafter, the present invention will be explained in detail according to embodiments shown in the drawings.

FIG. 1 is an overall schematic sectional view showing an embodiment of a granulation coating apparatus according to the present invention.

The granulation and coating apparatus in this embodiment has a substantially cylindrical granulation cylinder 1 which is installed in an upright position and performs granulation and coating of powder and granules introduced therein. A raw material inlet 2 is provided diagonally upward on the side surface of the granulation tube 1 at approximately the middle height, and a bottom side surface K of the granulation tube 1 is provided diagonally upward.
ri, a discharge chute 3 for taking out the product that has been granulated and coated, and a discharge valve 4 for opening and closing the discharge port.
is provided.

Granulation cylinder 1 at approximately the same level as the discharge chute 3
A rotating disk 5 is provided at the bottom of the granulation cylinder 1 to perform granulation coating by rotating approximately horizontally within the granulation cylinder 1. A stirring blade 6 for stirring the granular material being coated is provided so as to be rotatable in a substantially horizontal direction.

The rotating disk 5 is rotated by rotating a hollow rotating shaft 7, which is provided substantially vertically at the center of the body of the granulating cylinder l, in a desired direction from a variable speed motor 8 via a belt 9. be done.

On the other hand, the stirring blade 6 has a bearing 1 inside the hollow rotating shaft 7.
A rotary shaft 11 coaxially inserted through the rotary disk 5 is rotated by a variable speed motor 12 separate from the motor 8 via a belt 13, thereby being independent of the rotary disk 5. rotated in the direction and speed of rotation.

Further, the rotating disk 5 and stirring blade 6 are configured to be able to move up and down independently by separate lift mechanisms 14 and 15, respectively. These lifting mechanisms 14,15 may consist of worms and racks, for example.

The lift mechanism 14 for the rotating disk 5 lifts or lowers the rotating disk 5, thereby increasing the gap [1lij] between the periphery of the rotating disk 5 and the inner wall surface of the body of the granulating cylinder 1 The size of the slit 16 can be variably adjusted, for example, in the range of 0 to several tens of meters, and the flow rate of slit gas, such as heating or cooling air, blown into the granulation tube 1 from below through the slit 16 can be controlled during the granulation or coating process. The amount can be adjusted to the optimum amount depending on the situation.

In order to adjust the flow rate of the slit gas, the inner wall surface of the body of the granulating cylinder 1 close to the periphery of the rotating disk 50 includes:
As best shown in FIG. 2, a ring-shaped annular protrusion 17 having a substantially triangular cross-sectional shape is protruded. The slit 16 between the obliquely downward inclined surface 17a of this annular projection 17 and the peripheral edge of the rotating disk 5 is formed by the lift aN14.
As the rotary disk 5 is moved up and down, its dimension changes to a circle'
Adjustable.

However, the dimensions of the slit 16 may be adjusted by making the position of the annular projection 17 itself variable up and down.

Further, as illustrated in FIG. 3, the rotary disk 5 of this embodiment has a ventilation section 18 made of a perforated plate in the circumferential direction at a radially intermediate position and slightly outside. This ventilation part 1
8 can be made of a sintered plate or a wire mesh having pores large enough to prevent the powder and granules from leaking, other than a perforated plate. In order to sufficiently perform the centrifugal transfer of the rotary disk 50, it is preferable that the rotary disk 50 be located outside the intermediate position in the radial direction. Also 1 ventilation part 1
8 does not necessarily need to be provided in the circumferential direction, and may be provided as a notch in a part of the radial direction.

The purpose of providing this ventilation section 18 is to separate the slit gas supplied into the granulation cylinder 1 through the slit 16 to
By blowing gas, for example heated air or cooling air, into the granulation tube 1 from below through this ventilation part 18,
The object of the present invention is to provide a flow pattern different from a flow pattern caused by a slit gas to the powder or granules in a granulation cylinder 1, and to efficiently produce better quality granulated or coated products.

Therefore, the lower side of the rotating disk 5 has the rotating disk 5 on the upper side.
An annular partition 19, zO is installed on the bottom wall 23, provided with a labyrinth-type sealing ring 21.22 which enters into an annular groove formed on the lower side of the slit 16. Gas passages 24 and 25 for the slit gas ejected into the granulation cylinder 1 and the gas ejected into the granulation cylinder 1 through the ventilation portion 18 are formed as separate systems.

That is, these gases are initially blown out in common from the air supply fan 26 shown in FIG. is supplied to the bottom of the air supply duct 27 after being brought to a cooling temperature.
A partition wall 30 connected to the annular partition wall 19 that partitions the gas passageway 5 is partitioned into a slit gas passage 31 and a gas passage 32 to the ventilation section 18 . These slit gas passages 31 and gas passages 32 communicate with the aforementioned slit gas passages 24 and gas passages 25, respectively, and form separate slit gas supply passages and gas supply passages to the ventilation section 18, respectively. do.

Further, near the entrance of each gas passage 3132, a slit gas flow adjustment valve 33 and a gas flow rate adjustment valve 33 for independently and variably adjusting the flow rate of the slit gas or the gas to the ventilation section 18 are arranged. It is set up. By independently controlling these flow regulating valves 33 and 34, various flow patterns can be obtained by the two gas flows injected into the granulation tube 1 through the slit 16 or the vent 18. I can do it.

On the other hand, as illustrated in FIG. 4, the stirring blade 6 in this embodiment has three curved claw-shaped stirring blades 36 disposed on the side surface of the boss 35 at intervals of approximately 120 degrees from each other to achieve a mixed granulation effect. It is configured to increase the Further, as shown by the broken line in FIG. 2, the stirring blade 6 is used to collect the purge gas supplied through the air supply passage 3'7 formed in the rotary shaft 11 from the lower surface 1 side of the boss. This prevents the powder from being ejected and getting caught in the gap between the rotating shaft 11 and the rotating disk 5.

Furthermore, in this embodiment, above the periphery of the stirring blade 6, a crushing mechanism 38 is installed from the side of the granulation cylinder 1 into the cylinder in a substantially horizontal direction.

As shown in FIG. 5, this crushing mechanism', 38 has a large number of roughly triangular crushing blades 41 protruding in the radial direction around a crushing shaft 40 that is rotated by an electric or pneumatic motor 39. Consists of structure. The crushing blades 41 move at a high speed, for example, in the powder layer that performs a spiral transfer movement along the peripheral wall of the granulation cylinder 1 by the rotation of the rotating plate 5 and the stirring blade 6. and rotates at a higher speed than the rotational speed of the stirring blade 6. As a result, in addition to the rolling granulation coating action by the rotary plate 5 and the agitation mixing and kneading action by the stirring blades 6, the powder layer has crushing, granulation, mixing and dispersion, and fine granulation effects by the rotational shearing force of the crushing blades & 3B. Due to these mutual effects, a spherical granulated coating product can be obtained with high productivity. In particular, the shearing force of the crushing blade 411d allows the granulation coating to be performed while finely dividing the nodules that are unnecessarily generated in the powder layer into particles of the desired size. Granules can be obtained.

In addition, the stirring blade 6 near the bottom of the granulation cylinder l of this embodiment
On the slightly upper side wall part and above the stirring blade 6,
A two-fluid nozzle spray gun 45,46 is provided for spraying the coating g or binder liquid pumped from the liquid tank Tsukuda by a pump 43,44.

On the other hand, a nozzle 47 is provided on the wall of the granulation cylinder 1 at approximately the same height as the spray gun 45 to supply a powder raw material into the powder layer in the granulation cylinder 1 .

Furthermore, an exhaust duct 48 is connected to the top side surface of the granulation cylinder 1 for discharging exhaust gas from the powder layer to the outside of the system. Additionally, a hinged lid 49 is attached to the top wall of the granulation cylinder 1 so that it can be opened and closed.

Note that a dust collection mechanism such as a bag filter or a cyclone may be provided in the upper part of the granulation cylinder 1, but in this embodiment, by providing the crushing mechanism 38, the inside of the granulation cylinder 1 is Powder material is put into the container, and a large amount of binder or coating liquid is supplied until there is no free fine powder, and the plugging/coating operation can be performed, so there is an advantage that there is no need to provide a dust collection mechanism. be.

Next, the action of Honfuj1M9N will be explained.

First, lift the ring h16 between the rotating circle +Iy at the bottom of the cylinder 1 and the slope 17a of the annular protrusion 17 on the body of the granulation cylinder 1 by the length of Br. The rotating disk 5 is rotated by the motor 8 while the cylindrical size of the rotating disk 5 is set to the pruning height by the mechanism 14. In that case, at the start of the molten #i operation, the gas flow rate adjustment valve 34 is slightly opened, the slit gas flow rate adjustment valve 33 is opened by a predetermined amount, and the gas from the air supply fan 26 is transferred from the surin h 16 to the granulation cylinder 1. Make it squirt inside.

Thereafter, the motor 12 rotates the stirring blade 6 through the bell h 13 and the rotating shaft 11 at a desired speed in the same or opposite direction to the rotating disk 5, and then the powder is introduced into the granulating cylinder 1 from the raw material input port 2. While supplying a predetermined amount of raw material and stirring the powder, RL is applied by one or both of the spray guns 45 and 46.
The binder liquid or coating liquid pumped from the tank by pumps 43 and 44 is sprayed into or above the powder layer. Thereafter, the gas flow-JtfA regulating valve 34 is opened to a predetermined amount, and gas is ejected from the ventilation portion 18 of the rotary disk 5. Moreover, the required amount of the granular material raw material can be supplied from the nozzle 47 into the granular material layer as needed. Exhaust from the powder layer in the granulation cylinder 1 is discharged to the outside of the yarn through an exhaust duct 48.

In that case, in the granulation coating apparatus of this embodiment, the combined rotational operation of the rotating disk 5 and the stirring blade 6 and the two gas flows of the slit gas passing through the slit 16 and the gas passing through the ventilation section 18 of the rotating disk 5 are realized. As a result of this combination, the powder material is subjected to agitation mixing and rolling action, and flows in a circular flow pattern in which it rises with the gas flow and falls under its own weight, and as shown in Figures 6 and 7, Not only does a transfer layer that performs a spiral transfer movement, that is, a particle layer is formed on the peripheral wall of the granule tube 1, but the crushing blades 41 of the crusher IpH38 are used to increase the particle material between the granulation layers. By rotating the rotating disk 5 in the same direction as the rolling direction (rotating direction of the rotating disk 5), in other words, at a higher speed than the transfer speed of the powder layer (5), the powder particles are , the granular material J@b (J is finely divided by rotational shearing force and granulated, and the granular material is granulated in the direction of the center of the granulation tube 1 as shown by the dashed arrow 51 in FIGS. 6 and 7. better dispersion, better subdivision and mixing effect'f
: Can serve.

Therefore, according to this embodiment, in addition to the combined rotational operation of the one-rotation disk 5 and the stirring blade 6 and the combination of the two gas flows of the slit gas passing through the slit 16 and the gas passing through the ventilation section 18, the crushing mechanism By the functions of the 38 M crushing blades 6 such as subdivision, mixing, dispersion, and particle size regulation, a granulated coating with good sphericity and uniform particle size can be obtained with extremely high productivity.

In particular, in this embodiment, by providing the crushing mechanism 38, there is no need for souffle spraying during granulation coating, and the binder liquid or coating liquid is applied to the powder raw material introduced into the granulation cylinder 1. In a state where the ingredients are supplied all at once, the rotating disk 5, the stirring blades 6, and the crushing blades 41 are rotated to perform mixing and mixing, thereby making it possible to perform the entire granulation coating. As a result, not only the speed of granulation and coating becomes faster, but also the scattering of fine powder within the granulation cylinder 1 can be suppressed, and a homogeneous product without segregation of ingredients can be obtained.

In addition, since the crusher 418 is provided, the slit gas from the slit 16 can be supplied in a small amount to prevent the granular material from falling from the slit, and a large amount can be supplied to promote the transfer of the granular material. This is not necessary, and scattering of fine powder caused by the slit gas can be suppressed, and segregation of components can be prevented.

Therefore, in order to prevent the scattering of such fine powder, there is no need to install a bag filter inside the granulation tube 1, and when it is necessary to dry the product, a simple cyclone (not shown) can be used instead. ) is provided outside the granulation cylinder 1, and the powder and granules collected by the cyclone can be recycled again, thereby making it possible to obtain an economically inexpensive and efficient granulation coating device.

Furthermore, in the case of powders and granules with a high specific gravity such as ceramics, powder metallurgy materials, and ferrite, it has conventionally been impossible to restart once the fluidization state has been stopped, but in this example, stirring Blade 6 and crushing blade 41
By starting the rotation together with the rotary disk 5, even in such a case, it is possible to restart easily.

Furthermore, in this embodiment, by providing the crushing mechanism 38, it is possible to make the product into fine particles, and the particle size can be easily controlled by changing the rotation speed of the crushing blades 41. be able to. That is, by reducing the rotation speed of the crushing blade @41, it is possible to obtain products with relatively large particle sizes, and by increasing the rotation speed, fine particles can be produced.

The product after granulation and coating can be quickly discharged from the discharge chute 3 due to the synergistic effect of the rotation of the rotating disk 5 and the stirring blade 6.

FIG. 8 is a partial sectional view showing another embodiment of the granulation coating apparatus according to the present invention. .

In this embodiment, the rotary disk 5a has a simple disk-like structure, and the ventilation part 8 is not provided as in the previous embodiment. In addition, the side wall surface of the hook portion of the granulating cylinder 1 near the periphery of the rotating disk 5a is formed as an inclined surface 1a that is inclined diagonally downward and inward. Therefore, by moving the rotary disk 5a up and down with the lift mechanism 14.

The gap size of the slit 16 can be variably adjusted as desired.

Furthermore, the stirring blade 6a of this embodiment has a smaller diameter than the diameter of the rotating disk 5a.

Also in the embodiment shown in FIG. 8, the rotating disk 5a and the stirring blade 6
Due to the combined rotational action of a and the slit gas passing through the slit 16, a high quality granulated coating product can be obtained with high productivity.

Note that the side wall surface of the body portion of the granulating cylinder 1 that forms the slit 16 between it and the peripheral edge of the rotating disk 5a is opposite to the inclined surface 1a.
The needle may be inclined upward. This is the same in the case of the annular projection 17 in the embodiment described above, and the annular projection 17 is arranged above the rotating disk 5 or 5a and inclined diagonally downward toward the outside of the granulation cylinder l. Uki may be used as a slit forming surface.

FIG. 9 is a partial sectional view showing another embodiment of the granulation coating apparatus according to the present invention.

In this embodiment, the rotating disk 5bid is a simple disk, and no stirring blades 6 or tri6a are provided above it, and the annular protrusion serving as the slit forming means is also an annular member with a rectangular plate-like cross section that can be moved up and down. 17 b It is composed of K.

In the case of this embodiment, a spherical granulated coating product is obtained by the centrifugal rolling action of the powder raw material on the plate surface of the rotating disk 5b, and the particle size of the product is uniform, and the slits from the slit 16 It is possible to prevent the powder and granules from getting stuck in the gas and to the inner wall surface of the granulation cylinder 1, and to dry the product, as well as to have a synergistic effect of the crushing, mixing, dispersing, etc. actions by the crushing mechanism 38. Additionally, as in the above embodiments, a granulated coating product with high sphericity and uniform particle size can be obtained with good productivity and can be dried without requiring any special drying equipment. Further, in this example as well, segregation of components in the product can be suppressed and a homogeneous product can be produced. These effects are due to the rotating disk 5
b, the slit gas from the slit 16, and the crushing mechanism 38.

FIG. 10 shows yet another embodiment of the granulation coating apparatus according to the present invention.

In this embodiment, the crushing mechanism is installed so as to be inclined downward inwardly with respect to the side wall surface of the granulating cylinder 1. In this case as well, the crushing mechanism Kita no Koyomi and the crushing blade 41 provide good crushing.
Mixing and dispersion effects can be obtained.

Further, the crushing mechanism 38 can also be arranged vertically so that the crushing blades 41 are positioned below, as shown by the two-dot chain line in FIG.

11 to 16 show various other embodiments of the crushing mechanism.

In the embodiment shown in FIG. 11, a screw 52 for dispersing the powder toward the center of the granulation cylinder is provided in the middle of the crushing process, and a crushing blade 41 which is opened Km in the tip direction as a crushing blade is provided.
This is a structure with a.

In the embodiment shown in FIG. 12, the crushing blade 41b is composed of four plate-shaped blades arranged radially at an angle of 90 degrees to each other at the tip of the crushing shaft 40. is bent toward the distal end of the crushing shaft 40.

In the embodiment shown in FIG. 13, the crushing blade 4 is made up of two loops provided within 2,000 planes, each making one page angle.
It is a structure with 1 e.

In the case of the embodiment shown in FIG. 14, a screw 52 is provided in the middle of the crushing process, and four loop-shaped crushing blades 41 are arranged at the tip (lower end) in the radial direction at an angle of 90 degrees to each other.
d is provided. This crushing mechanism is conveniently used in a vertical orientation as shown.

In the embodiment shown in FIG. 15, the crushing shaft 40 is provided with three stages of crushing blades 41e that gradually open toward the distal end.

Furthermore, in the case of the embodiment shown in FIG.
1 f, this embodiment is also convenient for use in the vertical position as shown.

Note that the present invention is not limited to the above embodiments,
Various other variations are readily possible. For example, instead of the rotating disk, a polygonal, generally disk-shaped rotating plate may be used, and the structure of the stirring blade may also be other than the above-mentioned embodiments, and the stirring blade may be It is also possible to provide it at the lower end of the rotating shaft that hangs downward from the top of the granulation cylinder coaxially with the rotating shaft of the rotating disk. etc. may also be made other than the above embodiments.

The apparatus of the invention can also be used for mixing, drying, etc.

Examples in which experiments were conducted using the granulation coating apparatus of the present invention will be shown below in comparison with comparative examples.

Example 1 Lactose 11.4Kt, chlorpheniramine maleate 0.
6 edges total 12.0Kg, diameter 400mm, cylinder height 2ρ0
As shown in FIG. 9, slit air is blown out from between the rotary disk and the granulation cylinder wall, and is also supplied to the apparatus of the present invention 1 having a crushing mechanism, and the rotary disk is r,p,m,,
The crushing member was rotated at 3ρ00 r, p, m, and diurnal hydroxyflobil cellulose (Nihonguchi & RPC-L
) 1.21 of the 8-chi aqueous solution was supplied in a short time without using a spray device, and 80°C air was supplied through the slit at 4 Ntr? /dx
When the powder was passed through at an air flow rate of 1, a high-quality dry granulated product with uniform particle size and uniform components was obtained in 16 minutes.

Comparative Example 1 For comparison, a conventionally known device (granulating cylinder diameter: 400 rarn, cylinder height: 2ρ00 scale), in which the bottom part was composed of a rotating disk and slit air was ejected from the gap between the rotating disk and the granulating cylinder wall, was used. , the rotation speed of the rotating disk is 100 to 300 f, p
, m,, the amount of ventilation from the slit is 3 to 10 Nrrl/
m.

The feed rate of raw materials is 5-L2Kt, and the feed rate of diurnal hydroxyl and lopylcellulose 8% water bath liquid is 0.5-3. Although changes were felt within the range of Ol, no good granules could be obtained due to the formation of agglomerates in the method of supplying in a short period of time without using a blowing device. Therefore, diurnal hydroxyglobil cellulose 8
% water bath liquid is supplied as fine particles using a spray device, the raw material supply amount is set to 121CIi, the rotational speed of the rotating disk is set to 20Or, p, m, and 80°C air is pumped through the slit at 4N. ? When 3.01 times of diurnal hydroxypropyl cellulose aqueous solution was passed through the tube at a suitable air flow rate, a high quality dry granulated product was obtained in 32 minutes.

Comparative Example 2 For further comparison, in a conventionally known mixing and granulating device (granulation cylinder diameter: 400 mm) consisting of a stirring blade and a crushing member, the rotation speed of the stirring blade was set to 100 to 500 r, p, m, ,
A diurnal hydroxyclovir cellulose aqueous solution is supplied in a short period of time without using a spray device, and the supply amount is 0.5 to 2.
Each was varied within the range of 0.01, but when the raw material supply amount was 12.
Shame did not yield good granules. Therefore, the total amount of raw materials supplied was set to 6~ (component ratios were the same), and the stirring blades were adjusted to 300~.
r. p. m. , crushing member at 3ρ00 r. p. m. When 0.57 g of a diurnal hydroxyglobil cellulose 8-t aqueous solution was supplied in the above-described manner, good quality granules were obtained in 3 minutes.

The results obtained from these experiments were as shown in Tables 1, 2, and 3.

Example 2 Lactose 13.5Kg, cornstarch 6 to 9, chlorpheniramine maleate 0.5, total 20 to 9, diameter 40
The present invention has a rotating disk, a stirring member, and a crushing mechanism as shown in Fig. 1, and blows out slit air from between the rotating disk and the granulation cylinder wall. 2, and the rotating disk was heated to 200 r. p. m. , stirring blade at 300 r. p. m. , ＃Crushing member 3.00Or,,
p. m. and diurnal hydroxyflobil cellulose (manufactured by Nippon Soda fPc-L) in an 8% water bath g. 2.01 was supplied to all IIJt fog equipment in a short period of time, and air at 80°C was passed through the slit at a flow rate of 4Nd7m for 3 minutes, then 80°C air was passed through the slit at 4Nd, and then from the ventilation section of the rotating disk. When the air was passed through the tube at an air flow rate of about 6N, a high-quality dry granulated product with uniform particle size and uniform components was obtained in 12 minutes.

Comparative Example 3 For comparison, it was composed of a rotating disk with a ventilation section and a stirring blade, and flowing air was ejected from the ventilation section of the rotating disk.
Patent Application No. F@57-(
Application date: September 24, 1980, title of invention: Granulation coating device) (granulation cylinder diameter: 400 wn, cylinder height: 2ρ00), the number of rotations of the rotating disk was set to 100 to 100.
300r. p. m. , the rotation speed of the stirring blade is 100-5.
00 r. p. m. , the amount of ventilation from the slit is 3 to 1
0 Nn? /Wm. IJX supply amount ~20,
The amount of diurnal hydroxyzulobil cellulose 8% water bath solution supplied was varied in the range of 1 to 51, but a method of supplying it in a short time without using a spraying device did not result in the formation of agglomerates and good granules. There wasn't. Then, by supplying a diurnal hydroxyglobil cellulose 8% water bath solution to a spray device as a mist of fine particles, the amount of raw material supplied was zOKg, and the number of revolutions of the rotating disk was 200 r, p, m, stirring. The rotation speed of the blade was set to 300 r, p, m, and the diurnal hydroquinepropyl cellulose 8-ti aqueous solution was added to 51! 4 Ntr of air at 80°C through the slit while working hard. /- air volume for 9 minutes, then 80℃ air was passed through the slit with 4Nr.
r? /m, 6 Nn from the rotating disk ventilation part? When the mixture was passed through the tube at an air flow rate of 7 -, a good quality dry granulated product was obtained in 29 minutes.

Comparative Example 4 For further comparison, in a conventionally known mixing and granulating device (granulation tube diameter: 400 mm) consisting of a stirring blade and a crushing member, the rotational speed of the stirring blade was set to 100 to 500 r, p, m, I.
The amount of diurnal hydroxyfilobil cellulose 8% water bath solution is supplied in a short time without using a spray device.
Each was varied within a range of 51, but when the raw material supply amount was 20
Good granules could not be obtained with Kp. Therefore, the raw material supply amount was set to 6 edges in total (component ratios were the same), the stirring blade was set at 300 r, p, m, and the crushing member was set at 3.000 r,
P and m, and 0.5 A' of diurnal hydroxyprobil cellulose 18% water bath solution was supplied in the above-mentioned manner, and a good quality granulated product was obtained in 3 minutes.

The results obtained from these experiments were as shown in Table 4 and Table 6.

Table 5 Table 6 As explained above, according to the present invention, a high quality granulated coating product with high sphericity and uniform particle size can be obtained with good productivity.

[Brief explanation of the drawing]

FIG. 1 is a schematic overall sectional view showing one embodiment of the granulation coating apparatus according to the present invention, FIG. 2 is an enlarged partial sectional view of the main part thereof, and FIG. 3 is an embodiment of a rotating disk. FIG. 4 is a perspective view of one embodiment of the stirring blade, FIG. 5 is a perspective view of one embodiment of the crushing mechanism, and FIGS. 6 and 7 are granulation of the above embodiment, respectively. A partial vertical cross-sectional view and a partial horizontal cross-sectional view showing the coating action, FIG. 8 is a partial cross-sectional view of a third embodiment of the present invention, FIG. 9 is a partial cross-sectional view of another embodiment of the present invention, and FIG. The figure shows still another example of the present invention.
FIGS. 11 to 16 are partial sectional views showing two embodiments of the present invention, and are diagrams showing each embodiment of the crushing mechanism used in the present invention.゛ 1... Granulation cylinder, 1a... Inclination amount,
2... Raw material input port, 3... Discharge chute, 5.5a, 5b... Rotating disk, 6.6a.
... Stirring blade, 7 ... Rotating shaft, 8 ...
... Motor, 11 ... Rotating shaft, 12 ...
...Motor, 14, 15...Lift mechanism, 16
...Slit, 17...Annular projection, 1
7 a... Inclined surface, 17 b... Annular member, 18... Ventilation section, 24... Slit gas passage, 25... Gas m path, 26...
...Air supply fan, 27...Air supply duct, 31...
...Slit gas passage, 32...Gas passage, 33...Slit gas flow rate adjustment valve, 34...
...Gas flow rate - valve regulation, ah... crushing mechanism, 3
9...Motor, 40...Crushing shaft, 41
．． 41a, 41b, 41c, 41d, 41e, 41
f-...% crushing blade, 45.46...spray gun, 47...nozzle, 48...exhaust duct, 50...powder layer . Patent applicant Freund Sangyo Co., Ltd. Agent Patent attorney Dai Tsutsui Kazujishi 1g 2 205- Wakuz〃Shiomi 55' ♂4μ7 Nki 5I WakuaI Noshio 71U Housa 814 Kageshin 91g Hen 12〃4 3rd ♂ 13I 8 IIEll Easy heart y Continued from page 1 0 Inventor Shigeru Ohno 2-14-2 Takadanobaba, Shinjuku-ku, Tokyo 2 Freund Sangyo Co., Ltd.

Claims (2)

[Claims] (1) In a device used for granulation, coating, mixing, etc. of powder and granules, a rotating plate that rotates approximately horizontally within the body, and a slit formed between the periphery of this rotating plate and the side of the body. and a crushing means located above the rotary plate. (2) In an apparatus used for granulation, coating, mixing, etc. of powder and granules, there is a rotating plate that rotates approximately horizontally within the body, and a rotating plate that is located above the rotating plate and is approximately independent of the rotating plate. A granulated coating comprising: a stirring member that rotates in a horizontal direction; a slit formed between the periphery of the rotary plate and the body side; and a crushing means located above the rotary plate. Device.