KR101209770B1 - Fluidized bed granulator - Google Patents

Abstract

The fluidized bed granulation / drying apparatus of the present invention is penetratingly coupled to the chamber and the side of the chamber to inject the binder from the side by pneumatic pressure into the chamber, while controlling the spray angle in the chamber by operation outside the chamber. A flow unit having one or more injection nozzles, a bag filter unit coupled in communication with an upper portion of the flow unit to supply raw material powder into the chamber of the flow unit, and communicatively coupled to a lower portion of the flow unit; And a blowing unit for supplying hot air into the container.
According to this, the injection nozzle is coupled to the housing side of the flow portion and by spraying the binder at a controlled angle from the side, the granules of the granules can be formed more uniformly and more spherically than before, and the speed of granulation can be increased. There is an advantage. In addition, since air of a constant temperature can be supplied to the flow section, there is an advantage that the granulated particles are dried to a uniform size.

Description

Fluidized Bed Granulator / Drying Equipment {FLUIDIZED BED GRANULATOR}

The present invention relates to a fluidized bed granules / drying apparatus, in particular a granulated and dried at the same time in the process of granulating the powder or concentrate, the fluidized bed granules / drying to be able to produce a constant size of the granules according to the needs of the consumer Relates to a device.

In general, a fluidized bed granulator is a device for granulating a powder or a concentrate, and is a device for spraying fine liquids (binders) on a particle surface of a powder in a fluidized bed to dry granules, and to manufacture particle diameters and composition ratios to a specification desired by a consumer.

Conventional fluidized bed granulators have been a system in which one product is produced through a five-stage process of raw material transfer, mixing, coalescence, granulation, and drying, but in recent years, a device that performs all five functions as a device Is being provided.

1 is a process diagram showing a process of the fluidized bed granules / drying apparatus 10 provided in the prior art, and the operation relationship of the fluidized bed granules / drying apparatus will be described with reference to the following.

Referring to FIG. 1, a fluidized bed granulator 20 is provided in which raw material powder is injected and primary raw materials (dextrin, suspension, solution, etc.) are sprayed by a nozzle.

The air blown by the intake fan 22 is supplied to the fluidized bed granulator 20 in a heated state through the combustion space 24, whereby the raw material powder introduced into the fluidized bed granulator 20 has fluidity, and a nozzle Granules and drying are made at the same time by the binder sprayed by.

That is, the air blown by the intake fan 22 is supplied into the fluidized bed granulator 20 through 120 to 160 degrees through the combustion space 24, and the hot air and the eliminator inside the fluidized bed granulator 20 are supplied. Drying and granulation are achieved by indirect heat exchange.

Here, the exhaust air passing through the fluidized bed granulator 20 is collected and recovered into the cyclone 26, is fed back to the fluidized bed of the fluidized bed granulator 20, the recovered particles are introduced into the nozzle side to fine particles for granules Used as (Germs).

In addition, fine particles not collected by the cyclone 26 are collected in the dust collector, and the particles collected in the dust collector are recovered to the re-dissolution tank 28.

On the other hand, the granules passed through the fluidized bed granulator 20 are cooled by the dehumidified air through the cooler 30, and then passed through the net of the screen 34 to be produced as a product. At this time, the dehumidified air cooling the granules is discharged to the outside through the exhaust fan (32).

For reference, the dehumidifying air flows to 25 degrees, and the particles passing through the fluidized bed granulator 20 are cooled to 65 degrees to 43 degrees.

Particles larger than the set size among the particles transferred to the screen 34 are pulverized by the mill 36 and returned to the fluidized bed granulator 20, and the particles passing through the screen 34 are interposed. It is passed through (38) to the packing room.

At this time, the passage 38 is divided into two sections, the recycling product storage and the finished product product storage.

However, the above-described conventional fluidized bed granules / drying apparatus 10 has a nozzle for injecting the primary raw material is fixed, and is installed in the form of injecting upwards to freely adjust and produce the size of the granules according to the demand of the consumer. It is not possible, there is a problem that the size of the granules is uneven, and time-consuming to form the granules.

In addition, there is a problem that the high temperature air blown into the fluidized bed granulator is not constantly supplied, so that the respective particles are not evenly dried to produce a constant granulated particle.

The present invention is to solve the above problems, by varying the nozzle for injecting the primary raw material from side to side, up, down, left and right, the size of the granules can be freely adjusted according to the needs of the consumer, the size of the granules uniformly In addition, it aims to provide a fluidized bed granulation / drying apparatus which is formed close to a sphere and can reduce the time required for granulation.

In addition, an object of the present invention is to provide a fluidized bed granules / drying apparatus capable of producing uniformly sized granulated particles by uniformly drying the respective particles by uniformly supplying hot air blown into the fluidized bed granulator.

The fluidized bed granulation / drying apparatus of the present invention is coupled through the chamber and the side of the chamber to inject the binder from the side by pneumatic pressure into the chamber, but can control the injection angle in the chamber by operation from outside the chamber A flow section having at least one injection nozzle, a bag filter section coupled in communication with an upper portion of the flow section to supply raw material powder into the chamber of the flow section, and communicatively coupled to a lower portion of the flow section, into the chamber of the flow section. And a blowing unit for supplying hot air.

The spray nozzle is detachably penetrated to the side of the chamber, a hollow hollow nozzle housing, a portion of the inner peripheral surface is detachably coupled to one outer peripheral surface of the nozzle housing, the hollow ball housing, the ball housing Is rotatably coupled to the inner surface of the one side portion is a rotating ball disposed in the inner circumferential surface of the nozzle housing, inserted and coupled to the other side of the rotating ball, a hollow formed ferrule, in close contact with one side of the ferrule, the hollow is A formed ferrule cap, a sealing ring interposed between the ferrule and the ferrule cap, and a clamp detachably coupled to an outer circumferential surface of the close contact portion of the ferrule and the ferrule cap to securely couple the ferrule to the ferrule cap; Is inserted into each of the hollows and one side protrudes out of the nozzle housing is disposed inside the chamber, And a nozzle bar having a binder inlet hole connected to the binder supply unit and an air inlet hole connected to the air supply unit at the other side.

The hollow width of the nozzle housing is inclined to become narrower as it is farther from the side coupled to the chamber. The rotating ball is inclined to extend from a portion disposed therein so as to define a rotation angle of the rotating ball and the nozzle bar. have.

The angle formed by the inclination may be 45 degrees based on the point where the inclination direction is changed.

The nozzle bar may be adjusted up, down, left, and right within 45 degrees with respect to the horizontal center axis of the nozzle housing.

The rotary ball is rotated on the inner surface of the ball housing by an external force, and when the external force is removed, the rotated rotary ball may be fixed on the inner surface of the ball housing.

A plurality of holes are formed between the flow part and the blower part, and a rotatable rotating plate may be built in to allow the hot air to be rotated when supplied from the blower part to the flow part.

According to the fluidized bed granulation / drying apparatus of the present invention, the spray nozzle is coupled to the housing side of the fluidized portion and sprays the binder at an angle controlled from the side, so that the granules of the granules are more uniform and more spherical than before. There is an advantage that can increase the rate of granulation.

In addition, since air of a constant temperature can be supplied to the flow section, there is an advantage that the granulated particles are dried to a uniform size.

1 is a process diagram showing the process of a fluidized bed granulation / drying apparatus provided in the prior art.
Figure 2 is a side cross-sectional view schematically showing a fluidized bed granulation / drying apparatus according to an embodiment of the present invention.
3 is a perspective view schematically showing the spray nozzle in the fluidized bed granulation / drying apparatus of FIG.
4 is a cross-sectional view schematically showing the injection nozzle of FIG. 3 along the line II ′.
5 is a plan view schematically showing the rotating plate of the fluidized bed granulation / drying apparatus of FIG.

Hereinafter, the fluidized bed granulation / drying apparatus of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a side cross-sectional view schematically showing a fluidized bed granulation / drying apparatus according to an embodiment of the present invention, Figure 3 is a perspective view schematically showing a spray nozzle of the fluidized bed granulation / drying apparatus of Figure 2, Figure 4 is a Is a cross-sectional view schematically showing a spray nozzle of a line along the line I-I ', and FIG. 5 is a plan view schematically showing a rotating plate of the fluidized bed granulation / drying apparatus of FIG.

Referring to FIG. 2, the fluidized bed granulation / drying apparatus 100 of the present invention is coupled to the fluid unit 300 and the upper part of the fluid unit 300 so as to supply a raw material powder into the fluid unit 300. And a blower 400 coupled to the filter unit 200 and the lower portion of the flow unit 300 to supply hot air introduced through the duct 410 into the flow unit 300.

Hereinafter, a description will be given focusing on a part that is a feature of the present invention.

The flow part 300 includes a chamber 310 and an injection nozzle 320.

In the chamber 310, primary raw materials (hereinafter referred to as “binders”) such as dextrin, suspension, solution, and the like are sprayed on the raw material powder supplied from the bag filter unit 200, and granulated and dried.

The injection nozzle 320 receives a binder from a binder supply unit (not shown) and supplies a binder into the chamber 310 by pneumatic pressure supplied from an air supply unit (not shown), and thus the side surface of the chamber 310. At least one or more is detachably penetrated through.

3 and 4, the injection nozzle 320 includes a nozzle housing 321, a ball housing 322, a rotating ball 323, a ferrule 324, a ferrule cap 326, The seal 325 includes a clamp 328 and a nozzle bar 327.

Here, the nozzle housing 321, the ball housing 322, the rotating ball 323, the ferrule 324, the ferrule cap 326 and the sealing ring 325 is formed through the hollow. .

The nozzle housing 321 is penetrated through the side of the chamber 310, a screw (螺絲) may be formed on one side to be detachable.

Specifically, the nozzle housing 321 may have a structure in which an outer circumferential surface near the center thereof protrudes like a partition wall and screws are formed at both sides of the partition wall.

In addition, the inner surface of the nozzle housing 321 is inclined, the inclination decreases from one side end to the other end side is formed in such a way that the inclination increases again through the partition wall, the hollow of the nozzle housing 321 is one side It may be a structure in which the width decreases toward the other side and grows again.

The inside of the nozzle housing 321 as described above may have a cross-sectional shape similar to a bow tie in which the short sides of the parallelogram are in contact with each other.

The inclination formed on the inner surface of the nozzle housing 321 may be formed at 45 degrees based on the point where the inclination direction is changed.

Here, 45 degrees represents 45 degrees to the right and left directions of the point at which the inclination direction is changed, and if the point at which the inclination direction is changed is an intersection point of the X axis and the Y axis in mathematics, the inner surface where the inclination increases is located in one quadrant. In addition, assuming that the inner surface of which the inclination decreases is located in two quadrants, the angles may be 45 degrees and 135 degrees.

The ball housing 322 may be a nut formed with a screw on one side of the inner circumferential surface, it is screwed with the screw formed on the other outer peripheral surface of the nozzle housing 321.

The rotating ball 323 is inserted and coupled to the hollow of the ball housing 322, it is rotatably close to the inner surface of the ball housing 322.

That is, the rotary ball 323 is fixed in the ball housing 322, when the external force is received is rotated by a predetermined angle on the inner surface of the ball housing 322, in that state if the external force is removed in the rotated position Position is fixed.

One side of the rotating ball 323 may be disposed in the other hollow of the nozzle housing 321 coupled to the ball housing 322.

The ferrule 324 is one side is inserted and coupled in the hollow of the rotating ball 323, the ferrule cap 326 is in close contact with the other side in the state in which the sealing ring 325 is interposed, the ferrule 324 and The clamp 328 is coupled to the outer circumferential surface to fix the sealing state of the sealing ring 325 and the ferrule cap 326.

The nozzle bar 327 has the nozzle housing 321, the ball housing 322, the rotating ball 323, the ferrule 324, the sealing ring 325, and the ferrule cap 326. Each side is inserted into and coupled to a hollow formed in the hollow), and one side is exposed to the outside of the nozzle housing 321, and the other side is exposed to the outside of the ferrule cap 326.

The other side of the nozzle bar 327 is connected to the binder supply unit binder inlet hole 327b for introducing the binder supplied from the binder supply unit and air inlet hole for connecting the air supplied from the air supply unit ( 327a) is formed.

The nozzle bar 327 pressurizes the binder introduced into the binder inlet hole 327b by the pneumatic pressure of the air introduced into the air inlet hole 327a and injects it into the chamber 310.

Here, the injection angle of the binder injected into the chamber 310 may be adjusted up, down, left, and right, and in the present invention, the injection angle may be adjusted from 0 degrees horizontally sprayed to 45 degrees up, down, left, and right.

The adjustment of the injection angle may be influenced by the rotation angle of the rotating ball 323 to which the nozzle bar 327 is coupled.

That is, when an external force is applied to the other side of the nozzle bar 327 up, down, left, and right, a predetermined angle is rotated by an external force applied to the rotating ball 323 coupled with the nozzle bar 327, wherein the predetermined angle is the nozzle. The hollow inclination width formed on one side of the housing 321, that is, the inclination angle of the inner surface is limited.

In the present invention, since the inclination angle of the inner surface of one side of the nozzle housing 321 is 45 degrees, even if the rotating ball 323 is rotated under an external force, one side of the nozzle bar 327 which is rotated with the rotating ball 323 is the nozzle. In contact with the inner surface of the housing 321, the rotation of the rotary ball 323 is no longer limited.

Here, when the external force is removed, the rotating ball 323 is fixed at the position, and the nozzle bar 327, which was rotated with the rotating ball 323, is also fixed at the position to maintain the desired injection angle. do.

Referring to FIG. 5, a plurality of holes 421 are formed between the flow part 300 and the blower part 400, and a rotating plate 420 is rotated.

The hot air from the duct 410 of the blower 400 is supplied to the flow part 300 through a plurality of holes 421 formed in the rotating plate 420, which passes through the holes 421. The hot air is supplied to the flow part 300 while forming a whirlwind by the rotation of the rotating plate 420.

When hot air is supplied to the flow part 300 through the hole 421 of the rotating plate 420 rotated as described above, the hot air may be evenly supplied to the entire space of the flow part 300 to be formed in the flow part 300. There is an advantage that can be uniformly and quickly drying the granules.

In the fluidized bed granulation / drying apparatus 100 having the structure as described above, when the raw material powder is introduced into the flow part 300 through the bag filter part 200, the injection nozzle 320 whose angle is adjusted from the side of the flow part 300. The binder is sprayed through to form granules by the action of the raw material powder, and the hot air is evenly supplied from the blower 400 to the flow part 300 to dry the granules.

According to the fluidized bed granules / drying apparatus 100 having the above structure, the spray nozzle 320 is coupled to the side of the chamber 310 of the flow part 300 to spray the binder at a controlled angle from the side than before. Particles of the granules are uniform, can form close to the spherical, there is an advantage that can increase the rate of granulation.

In addition, since air of a constant temperature can be supplied to the flow section, there is an advantage that the granulated particles are dried to a uniform size.

100 ... Fluidized bed granulators / dryers 200 ... Bag filter compartment
300 ... Flow 310 ... Chamber
320 ... spray nozzle 321 ... nozzle housing
322 ... ball housing 323 ... rotating ball
324 ... ferrule 325 ... sealing ring
326 ... ferrule cap 327 ... nozzle bar
327a ... air inlet hole 327b ... binder inlet hole
328 ... clamp 400 ... turning plate

Claims (7)

A through-coupling coupled to the chamber and the side of the chamber, and having at least one spray nozzle for injecting a binder from the side by pneumatic pressure into the chamber, and controlling the spray angle in the chamber by manipulation outside the chamber. Eastern;
A bag filter part coupled to the upper part of the flow part to supply raw material powder into the chamber of the flow part; And
And a blower coupled to communicate with the lower portion of the flow portion to supply hot air into the chamber of the flow portion.
The spray nozzle is:
A nozzle housing detachably penetrated to a side of the chamber and having a hollow formed therein;
A part of the inner circumferential surface detachably coupled to one outer circumferential surface of the nozzle housing and having a hollow ball housing;
A rotating ball rotatably coupled to an inner surface of the ball housing and having one side disposed in an inner circumferential surface of the nozzle housing;
Inserted and coupled to the other side of the rotating ball, the hollow formed ferrule;
A ferrule cap in close contact with one side of the ferrule and having a hollow;
A sealing ring interposed between the ferrule and the ferrule cap;
A clamp detachably coupled to an outer circumferential surface of the close contact portion of the ferrule and the ferrule cap to securely couple the ferrule to the ferrule cap; And
A nozzle bar inserted into each of the hollows and protruding outwardly of the nozzle housing to be disposed in the chamber, and a binder inlet hole connected to the binder supply part and an air inlet hole connected to the air supply part at the other side thereof; Including;
The hollow width of the nozzle housing is inclined downward to become narrower as it moves away from the side that is coupled to the chamber. and,
The angle between the downward and upward inclination is 45 degrees based on the point where the inclination direction changes.
The nozzle bar is angled up, down, left and right within 45 degrees with respect to the horizontal center axis of the nozzle housing,
The rotating ball is rotated on the inner surface of the ball housing by an external force, when the external force is removed, the rotated rotating ball is fixed on the inner surface of the ball housing,
A plurality of holes are formed between the flow section and the blower, and the rotating plate is built in the fluidized bed granules / drying apparatus, characterized in that the hot air is rotated when supplied from the blower to the flow section.
delete delete delete delete delete delete

Images