JP2001133150A - Drier with spiraled air flow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drier operared with spiraled air flow, which drier is fabricated with a simplified structure at small cost, allowing the main body of the drier to be dimensionally minimized easily, wherein the drier has further advantages such that the products are uniformly dried, especially in the case of provisional products, the qualitative level thereof is maintained to come up to the standard, allowing maintainability of the drier to be modified. SOLUTION: Liquid, mass, or powder-like raw material is dried in a drier 1 with spiraled air flow such that within a main body 2 of the drier 1, the raw material is traveled by high speed spiraling motion in a hot air flow, while agitated, mixed, dispersed, and roughly ground by a number of balls 3. The drier main body 2 of a vertical cylindrical shape has an inner wall 5 formed with an angled surface 6 of inverse conical shape. On the bottom portion 7 of the drier main body 2, a hot blast supplying port 8 is provided for supplying hot blast for traveling the ball 3 and the raw material 4 by the high speed spiraling motion due to the hot blast, while on the top portion 9 of the main body 2 of the drier 1, an exhaust port 11 for exhausting the dried product is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swirling air-flow dryer, and more particularly, to stirring a liquid, a lump or a powdery raw material with a large number of balls while rotating the raw material at high speed in a hot air flow inside a dryer body. The present invention relates to a swirling air-flow dryer for drying by mixing, dispersing, and crushing.

[0002]

2. Description of the Related Art Conventionally, without discarding raw okara as garbage,
Attempts have been made to effectively use it as a new food material (dried okara) by drying it with a dryer.

[0003] As an example of a conventional raw okara drying method,
For example, a flash dryer 40 using hot air shown in FIG. 12 is known. The air-flow type dryer 40 has a lower half portion formed of a horizontal cylindrical drying drum 41, and an upper half portion formed of a vertically-long rectangular classification chamber 42.
And the lower part of the classification chamber 42 are connected vertically via a communication passage 43. A large number of balls 3 are stored in the drying drum 41, and raw okara as a raw material is injected into the drying drum 41 from a raw material input port 44, and hot air is blown from a hot air supply port 45 to form the balls 3 in the drying drum 41. And while feeding the raw material on hot air,
The raw material is stirred, mixed, dispersed, and crushed, sent into the classification chamber 42, and the dried product (dried okara) lightened by evaporating water is discharged from the discharge port 45.

[0004]

However, in the conventional air-flow drier, the structure of the horizontal cylindrical drying drum 41 and the vertically-long rectangular classifying chamber 42 is complicated, which not only increases the cost but also increases the drying drum. Since 41 has a horizontal cylindrical shape, it is necessary to increase the width of the drying drum 41 in order to increase the processing capacity, so that mass processing is difficult. In addition, the classification chamber 42
Has a complicated shape, the dispersion of the dried product in the classification chamber 42 is uneven, and this causes drying unevenness of the dried product. Further, the movement of the raw material from the drying drum 41 to the classification chamber 42 is first performed by turning inside the drying drum 41, colliding with the lower end in the classification chamber 42, and vertically rising and dispersing in the classification chamber 42. There is also a problem that energy loss occurs due to tracing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to simplify the structure and to reduce the cost, and to easily reduce the size of the dryer body. Another object of the present invention is to provide a swirling air-flow dryer that can maintain a quality that can pass a standard in the case of a food material, and can maintain a uniform quality in a dry state.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a large number of liquid, massive or powdery raw materials 4 are swirled and moved in a hot air stream inside a dryer body 2 at a high speed. In a swirling air-flow drier that is dried by stirring, mixing, dispersing, and crushing with balls 3, an inverted conical inclined surface 6 is formed on an inner wall 5 of a vertically-oriented cylindrical dryer main body 2.
And the ball 3 and the raw material 4 are placed on the bottom 7 of the dryer body 2.
It is characterized by providing a hot air supply port 8 for supplying a hot air for rotating the water at high speed, and providing a discharge port 11 for discharging a dried product at an upper portion 9 of the dryer main body 2. While simplifying the structure of the dryer body 2,
The ball 3 and the raw material 4 are rotated at high speed in a cyclone-like manner by the inverted conical inclined surface 6 so that heat can be efficiently transmitted from the ball 3 to the raw material 4. Since it is crushed by collision or the like, the heat transfer area is further increased, and the thermal efficiency is further increased. Furthermore, since the dryer main body 2 has an inverted conical shape, the cavity wind velocity of the cylindrical cross section decreases as the dryer body 2 rises from the lower part to the upper part, and the swirling flow rate also decreases. The dispersed state of the dried product in the inside becomes uniform, and the dried state of the dried product can be made uniform. In addition, since the dried product is quickly discharged from the discharge port 11 provided in the upper portion of the dryer main body 2, it is difficult for the physical properties to change due to heat.

Preferably, the inverted conical inclined surface 6 is inclined at an angle of 5 ° to 45 ° with respect to the vertical line M. In this case, the ball 3 smoothly rises along the inclined surface 6 by the hot air flow. As a result, it is possible to drop smoothly at a certain height, and convection is generated inside the dryer main body 2, so that the hot air is efficiently propagated from the balls 3 to the raw material 4.

Preferably, the dryer main body 2 is separable into an upper half 2a and a lower half 2b, and an inverted conical inclined surface 6 is formed on the inner wall 5 of the lower half 2b. If
Maintenance of the lower half 2b, which is easily worn, becomes easier,
Further, replacement of only the lower half 2b can be performed easily and at low cost.

Preferably, the outlet 11 for the dried product is constituted by at least one of a top outlet 12 for discharging the dried product upward or a side outlet 13 for discharging the dried product to the side. In this case, the dried product having a small particle size is discharged from the top discharge port 12 opened upward, and the dried product having a large particle size is discharged from the side discharge port 13 opened laterally. Can be easily handled.

It is preferable that a hot air supply port 8 for sending the hot air from the tangential direction N of the dryer main body 2 be provided at one or more locations on the wall surface 7a of the dryer main body 2.
In this case, a more stable cyclone-shaped swirling flow can be generated inside the dryer main body 2.

It is preferable that an auxiliary hot air supply port 15 for feeding auxiliary hot air from the tangential direction N of the dryer main body 2 be provided on a side portion of the dryer main body 2. In this case,
A more stable cyclone-like swirling flow can be generated inside the dryer main body 2.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

The swirling air-flow dryer 1 of the present embodiment is shown in FIG.
As shown in FIG. 1, the dryer main body 2 is formed in a vertical cylindrical shape. In this example, the dryer main body 2 can be separated into a right cylindrical upper half 2a and an inverted conical lower half 2b, and the upper half 2a and the lower half 2b during normal use. Are joined without any gap by detachable engaging means (not shown). An inverted conical inclined surface 6 is formed on the inner wall 5 of the inverted conical lower half 2b.
Many balls 3 as a heat medium are thrown into the bottom 7 of b. The effective height of the lower half 2b is, for example, about 1 m for 100 kg / h of raw okara, but is not particularly limited.

The inverted conical inclined surface 6 is inclined at an angle θ of, for example, 5 ° to 45 ° with respect to a perpendicular M in FIG.
If it is within this range, the ball 3 is inclined by the hot airflow.
, And can smoothly fall at a certain height. If the angle of the inclined surface 6 is smaller than 5 °, the ball 3 becomes difficult to ascend.
This is because if it is larger than 0 °, there is a disadvantage that it does not fall while rising.

The ball 3 as a heat medium has a wind speed of 1
What can rotate at high speed on the reverse conical inclined surface 6 by hot air of about 5 to 40 m / sec is used. The material of the ball 3 is, for example, ceramic. By using a ceramic ball, a heat storage effect and a far-infrared effect can be obtained. Of course, the material of the ball 3 is not limited to this, and for example, a material made of silicon nitride, zirconia, alumina, or the like can be used. Silicon nitride balls are suitable for crushing, dispersing, and mixing the non-oxide raw material 4. A zirconia ball is suitable for crushing and dispersing in which the components of SiO ₂ and Al ₂ O ₃ are not mixed, and particularly exerts its power in wet crushing and dispersion with high viscosity. Alumina balls have the advantage of excellent wear resistance. In order to efficiently stir, mix, disperse and crush the raw material 4 with the ball 3, the ball diameter of the ball 3 should be about 0.5 mm to 1 mm.
About 0 mm is preferable.

A hot air supply port 8 is provided on the wall surface 7a of the bottom 7 of the dryer main body 2 so as to face the lower end of the inverted conical inclined surface 6. As shown in FIG. 2, the hot air supply port 8 communicates with a hot air generator 16 via a duct 14. The hot air generator 16 is a method of heating the air from the blower 17 by a burner, but may be a method of using various high-temperature gases. Further, in order to increase the turning speed of the ball 3 and the raw material 4, the wind speed of the hot air is about 15 to 40 m.
/ Sec is preferable.

In the middle of the duct section 14 leading to the hot air supply port 8, a charging hopper 18 and a raw material supply screw 18 are provided.
a and a raw material supply rotary valve 25 ″ for air sealing are provided. When the raw material 4 is supplied from the charging hopper 18, the raw material 4 is quantitatively cut out by the raw material supply screw 18a, and the raw material supply rotary valve 25 ″ for air sealing is opened. After that, it is sent into the inside of the dryer main body 2. In this example, as shown in FIG. 1, the hot air supply port 8 opens toward the tangential direction N of the wall surface 7 a of the dryer main body 2. Thereby, the hot air is sent into the dryer main body 2 from the tangential direction N of the dryer main body 2 to generate a forced swirling flow in a cyclone shape. Further, a conical cone portion 19 is provided upright at a position shifted from the center of the bottom portion 7 of the dryer main body 2, and an outer peripheral portion of the cone portion 19 forms an annular ball circulation passage 20. Here, FIG.
As shown in FIG. 5, the lower surface 20a of the ball circulation passage 20 is formed to have an upward slope A that gradually increases as the distance from the hot air supply port 8 increases. Thereby, the ball circulation passage 2
The structure has a structure in which an upward swirling flow due to hot air is easily generated by an upward gradient A of 0.

As shown in FIG. 1, the upper half 2a of the dryer main body 2 is formed in a right cylindrical shape, and has a pipe-shaped top discharge port 12 opened upward at the center of the top. Provided, a dried product having a small particle size (for example, 150 μm)
m or less). Further, a side discharge port 13 is opened to the side of the upper half 2a, and the side discharge port 13 is formed of a dried product having a large particle size (for example, 150 μm).
m or more). Here, the side discharge opening 13 communicates with the side opening 22 of the side product discharge opening 21 attached to the outer portion of the upper half 2a.
The lower surface opening 23 is opened at a position lower than 2. The dried product discharged from the top discharge port 12 is collected by a cyclone dust collector 24, and the product discharged rotary valve 2
It is discharged from 5. On the other hand, the dried product discharged from the side product discharge port 21 is directly discharged from the product discharge rotary valve 25 '. In addition, a bag filter or the like can be used as a dust collector for the dried product.

Next, an example of the operation of the dryer 1 of the present invention will be described. When the hot air generated from the hot air generator 16 in FIG. 2 is supplied into the dryer main body 2, the balls 3 move along the upward gradient A of the ball circulation passage 20 provided on the outer periphery of the cone portion 19 of the bottom 7 of the dryer main body 2. Starting high-speed rotation while floating,
Due to the centrifugal force generated by this high-speed turning movement, the ball 3 rises while turning at a high speed on the inverted conical inclined surface 6, rises to a certain height, stalls and drops when the centrifugal force is weakened, and is again dropped by hot air. Repeat high-speed turning movement. In this state, when raw okara (raw material 4) is charged from the input hopper 18, the raw okara is sent into the dryer main body 2 by hot air, and is swirled in a cyclone shape by a large number of balls 3 as shown in FIG. While rising.

At this time, the raw material 4 is stirred, mixed, dispersed and crushed by the flow of the ball 3 and the collision with the inclined surface 6 of the dryer body 2. When the raw material 4 is moving at a high speed in a swirling flow, the raw material 4 forms a kind of fluidized bed with the ball 3 heated by the hot air, and the raw material 4 exchanges heat with the ball 3, and further forms a fluidized bed. Since the heat is exchanged between the heat exchanger and the inclined surface 6 having an inverted conical shape heated by the hot air, the heat is exchanged and dried, so that the heat efficiency is increased. Moreover, since the inverted conical inclined surface 6 is inclined at 5 ° to 45 ° with respect to the perpendicular M, the ball 3 can be smoothly raised by the hot air flow, and can be smoothly dropped at a certain height.
As a result, convection occurs inside the dryer body 2 and the balls 3
Propagation of hot air from the raw material 4 to the raw material 4 is performed more efficiently, and the raw material 4 is dried while repeating attachment and detachment to the ball 3. When the raw material 4 is a food material, a sterilizing effect can be obtained at the same time. Further, since the raw material 4 is crushed by collision with the ball 3 and the inverted conical inclined surface 6, the heat transfer area is further increased, and the thermal efficiency is further increased.

When the drying of the raw material 4 is completed, the heated dried product (dry okara) rises toward the upper outlet 11. At this time, even if a dry product adheres to the surface of the ball 3,
When the balls 3 collide with each other or collide with the inner wall 5 of the dryer main body 2, the balls 3 are easily separated from the ball 3 surface. Moreover, since the dryer main body 2 has a vertical cylindrical shape, the cavity wind velocity of the cylindrical cross section is reduced as it goes from the lower part to the upper part of the dryer main body 2, and the swirling flow rate is also reduced as it goes to the upper part. Raw material 4 in the upper part of the machine body 2
Becomes longer, and as a result, the dispersion state of the dried product in the dryer main body 2 becomes uniform, and the drying state of the dried product can be made uniform. The dried product is discharged to the cyclone dust collector 24 from the top discharge port 12 provided at the top of the dryer main body 2. Therefore, energy loss does not occur, and when the raw material 4 is a food material, physical properties change due to heat is less likely to occur, and quality that can pass the standard as a food material can be maintained. The dryer body 2
By providing the side product discharge port 21 on the side of the
It is also possible to discharge a dried product having a large particle size (about 150 μm or more).

As described above, since the ball 3 can be dried one after another while repeatedly rising and falling along the inclined surface 6 having an inverted cone shape, the raw material 4 can be dried after being charged. A series of processes up to discharge can be performed instantaneously and continuously. According to the experiment of the inventor, raw material 4
It was confirmed that a series of processing time required from charging, drying, and discharging was about 3 seconds.

Also, the dryer main body 2 has a vertical cylindrical shape,
Since the hot air supply port 8 is provided at the bottom 7 and the discharge port 11 is provided at the top 9, the structure is simple and the cost can be reduced. The inverted conical inclined surface 6 is subject to heavy wear due to the high-speed turning movement of the ball 3, and therefore requires regular maintenance. In this example, the dryer main body 2 is divided into an upper half 2a and a lower half 2b. And the inner wall 5 of the lower half 2b is provided with an inverted conical inclined surface 6, so that the maintenance of the lower half 2b becomes extremely easy, and also when the lower half 2b is replaced. Since only the lower half 2b needs to be replaced while leaving the upper half 2a, the cost required for replacement can be reduced. The upper half 2a of the dryer main body 2 and the side product discharge port 21 can be omitted.

In the above embodiment, the top outlet 12 is provided at the top of the dryer main body 2 and is opened upward. Alternatively, as shown in FIG. A side discharge port 13 opened in the lateral direction from the direction may be provided. By setting the discharge direction of the dried product in the horizontal direction instead of the upward direction, the dried product is discharged in accordance with the swirling airflow inside the dryer main body 2, and as a result, the raw material in the dryer main body 2 can be discharged. 4 can have a constant residence time.

In the above embodiment, the case where the raw okara as the raw material 4 is dried to obtain the dried okara has been described. However, the type of the raw material 4 is not particularly limited, and the raw material 4 may be in a liquid state, a lump state or a powder state in a wet state. For example, a wide range of raw materials 4 can be used. Further, in the case of the large bulk material 4, the material 4 which has been dispersed in the form of powder using a crusher or the like may be charged from the charging hopper 18.

In the above-described embodiment, the case where the raw material 4 is charged from the duct portion 14 of the hot air supply port 8 has been described. However, the charging path of the raw material 4 is not particularly limited, and the type of the raw material 4 (liquid, lump, powder) Is selected according to the condition. For example, raw material 4
In the case where is a liquid, as shown in FIG. 6, a nozzle 26 for droplets is inserted into the dryer main body 2 from the upper portion 9 of the dryer main body 2, and the liquid raw material 4 is put into the ball 3 from the tip of the nozzle 26. The liquid raw material 4 is dropped onto the ball 3
Attach to surface. As a result, as described above, the dried product is separated by the collision of the balls 3 and the collision with the inclined surface 6, so that the drying of the liquid material is performed uniformly. Note that the insertion position of the nozzle 26 may not necessarily be on the upper part of the dryer main body 2 but may be on the side part.
In any case, a method in which a liquid material is stored in a tank and the liquid material is pumped into the nozzle 26 using a pump can be adopted.

In the above-described embodiment, the hot air supply port 8 is provided at one location on the wall 7a of the dryer main body 2, but as shown in FIG. ,
A plurality may be installed at intervals in the circumferential direction of the wall surface 7a. In this case, each hot air supply port 8 is connected to the dryer body 2 respectively.
, The hot air is sent from a plurality of locations along the tangential direction N of the dryer main body 2, and the inside of the inverted conical dryer main body 2 has a more stable cyclone-like turning. A flow can be generated.

Further, as shown in FIG.
The auxiliary hot air supply port 15 for sending the auxiliary hot air C from the tangential direction of the dryer main body 2 may be provided on the side of the dryer. In this case, a more stable cyclone-like swirling flow can be generated inside the dryer main body 2 by the auxiliary hot air, and the drying efficiency can be improved. The supply of the auxiliary hot air to the auxiliary hot air supply port 15 may be performed from the hot air generator 16 in FIG. 1 or may be supplied from another heat source.

Further, in the above-described embodiment, the case where the inverted conical inclined surface 6 is inclined straight from the lower end to the upper end has been described. However, as shown in FIG. Is also good. In addition, in order to make the ball 3 easily rise along the inclined surface 6, the angle is set in two steps (or 3 steps).
(Steps or more). Here, FIG.
9B shows a case where the inclination angle of the upper inclined surface 6b is smaller than that of the lower inclined surface 6c, and FIG. 9C shows that the inclination angle of the upper inclined surface 6d is smaller than that of the lower inclined surface 6e. Also shows a case where it is increased. In FIG. 9C, the residence time of the ball 3 can be increased by the inclined surface 6e. In other words, the inclined surfaces 6a to 6e only need to have a substantially inverted conical shape, and the magnitude of the inclination can be changed as appropriate.

In the above embodiment, the case where the hot air supply port 8 is installed facing the lower end of the inverted conical inclined surface 6 of the dryer main body 2 has been described, but FIGS. 10 (a) to 10 (c). As shown in FIG. 3, a hot air chamber 32 is provided at the bottom 7 of the dryer main body 2, and a number of blades 3 are provided on the opening surface of the ceiling of the hot air chamber 32.
0 are radially juxtaposed to form slits 31 for hot air discharge between the respective blades 30. In addition, each blade 30
Are inclined in the same direction, and the direction of the hot air from the slit 31 is inclined. The height (opening size B of the hot air discharge port) of the blade plate 30 shown in FIG. 10D is, for example, about 0.5 to 2 mm. By causing the hot air to be discharged from the slit 31 between the inclined blade plates 30 in the direction shown by the arrow a, the entire bottom 7 of the dryer body 2 has a uniform cyclone-like shape as shown by the arrow B. Hot air swirling airflow can be generated. The size of the slit 31 is set smaller than the particle size of the ball 3 so that the ball 3 does not fall into the hot air chamber 32. In addition, the punching plate 33 shown in FIG.
4 may be inclined in the respective oblique directions,
Also in this case, a uniform cyclone-like hot air swirling airflow can be generated in the entire bottom portion 7 of the dryer main body 2, and the hot air discharge port 34 can be easily formed by punching, and the manufacturing cost is low. Will be enough.

The application of the swirling air flow dryer 1 of the present invention is not limited to drying with hot air, but can also be used as a cooling device for cooling the raw material 4 with cold air. Further, it is also possible to use a disinfecting device by injecting a disinfecting solution (for example, cresol or the like) into the inside of the dryer main body 2.

Further, the swirling flash dryer of the present invention can be used as an incinerator. For example, by attaching a burner in place of the auxiliary hot air supply port 15 shown in FIG. 8, it is possible to incinerate the dried product floating inside the dryer main body 2. In this case, even if the raw material 4 is in a wet state, the raw material 4 is dried by the balls 3 and the hot air and floats from the lower part to the upper part, so that it can be efficiently incinerated by the burner.

[0033]

As described above, according to the first aspect of the present invention, a liquid, a lump or a powdery raw material is agitated by a large number of balls while being swirled at a high speed in a hot air flow inside a dryer body. In a swirling air-flow dryer that mixes, disperses, and crushes and dries, an inverted conical slope is formed on the inner wall of the vertical cylindrical dryer main body, and balls and raw materials are formed at the bottom of the dryer main body. A hot air supply port for supplying hot air for high-speed turning movement is provided, and a discharge port for discharging dried products is provided at the top of the dryer body, so that balls and raw materials are turned at high speed in a cyclone shape by an inverted conical inclined surface. Go,
The heat is efficiently transmitted from the ball to the raw material, and the raw material is crushed by collision with the ball, so that the heat transfer area is further increased, the thermal efficiency is further increased, and the raw material is reduced. In the case of food material, a sterilizing effect can be obtained at the same time. Furthermore, since the main body of the dryer has an inverted conical shape, the dispersion state of the dried product in the main body of the dryer becomes uniform, and the drying state of the dried product can be made uniform. Since it is quickly discharged from the discharge port provided in the upper part of the food, it is difficult for physical properties to change due to heat, and in the case of food materials, it is possible to maintain quality that can pass the standard. In addition, since the dryer body has a vertical cylindrical shape and a simple structure with only a hot air supply port at the bottom and a discharge port at the top, cost can be reduced and the size of the dryer body can be reduced. Becomes easier. In addition, since the path through which the raw material moves is shortened, energy loss does not occur and thermal efficiency is improved.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the inverted conical slope is 5 ° with respect to the vertical.
Since it is inclined at ~ 45 °, the ball can smoothly rise along the inclined surface due to the hot air flow, and can drop smoothly at a certain height, thereby causing convection inside the dryer body. Propagation of the hot air from the balls to the raw material is efficiently performed.

According to a third aspect of the present invention, in addition to the effect of the first aspect, the dryer main body can be separated into an upper half and a lower half, and the inner wall of the lower half has an inverted conical shape. Because the inclined surface is formed, maintenance of the lower half, which is easily worn, becomes easier, and when replacing the lower half, only the lower half needs to be replaced while leaving the upper half, so The required cost can be kept low.

According to a fourth aspect of the present invention, in addition to the effect of the first aspect, the discharge port for the dried product is a top discharge port for discharging the dried product upward or a side for discharging the dried product to the side. Because of the configuration of at least one of the outlets, the dried product having a small particle size is discharged from the top outlet opening upward, while the dried product having a large particle size is discharged to the side exhaust opening sideways. Since it is discharged from the outlet, it is possible to easily cope with the type of particle size of the dried product.

According to a fifth aspect of the present invention, in addition to the effect of the first aspect, a hot air supply port for sending hot air from a tangential direction of the dryer main body is provided at one or more locations on a wall surface of the dryer main body. , A more stable cyclone-like swirling flow can be generated inside the dryer body.

According to a sixth aspect of the present invention, in addition to the effect of the first aspect, an auxiliary hot air supply port is provided at a side portion of the dryer main body for feeding auxiliary hot air from a tangential direction of the dryer main body. Therefore, a more stable cyclone-like swirling flow can be generated inside the dryer main body, and the drying efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of the present invention.

FIG. 2 is an explanatory view of the swirling air-flow dryer.

FIGS. 3 (a) and 3 (b) are a front view and a rear view of the above-mentioned inverted conical inclined surface.

FIG. 4A is a schematic diagram of a high-speed turning movement of the ball and the raw material, and FIG. 4B is a schematic diagram of a state where the raw material adheres to the ball surface.

FIG. 5 is a perspective view of another embodiment.

FIG. 6 is a perspective view of still another embodiment.

FIG. 7 is a schematic plan view of still another embodiment.

8A is a side view of still another embodiment, and FIG. 8B is a schematic plan view.

FIGS. 9A to 9C are explanatory views of a modified example of the above-mentioned inverted conical inclined surface.

FIG. 10A is a plan view of still another embodiment, and FIG.
Is a side view, (c) is a side view explaining a slit, (d)
FIG. 4 is an explanatory diagram of a height of a slit.

FIG. 11 is a perspective view of still another embodiment.

FIG. 12 is an explanatory view of a conventional flash dryer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Swirling air flow dryer 2 Dryer main body 3 Ball 4 Raw material 5 Inner side wall 6 Inclined surface 7 Bottom 7a Wall surface 8 Hot air supply port 9 Top 11 Drain port 12 Top discharge port 13 Side discharge port 15 Auxiliary hot air supply port M perpendicular N tangent direction

Claims (6)

[Claims] 1. A swirling air flow type drying in which a liquid, lump or powdery raw material is stirred, mixed, dispersed and coarsely crushed with a large number of balls while being swirled at a high speed in a hot air flow inside a dryer body. In the dryer, an inverted conical inclined surface is formed on the inner side wall of the vertical cylindrical dryer body, and a hot air supply port is provided at the bottom of the dryer body to supply hot air for rotating balls and raw materials at a high speed. A swirling air-flow drier, wherein a discharge port for discharging a dried product is provided at an upper part of the main body of the drier. 2. The inverted conical inclined surface has an angle of 5 ° to a perpendicular.
The swirling air-flow dryer according to claim 1, wherein the dryer is inclined at 45 degrees. 3. The swirling airflow according to claim 1, wherein the dryer main body is separable into an upper half portion and a lower half portion, and an inverted conical inclined surface is formed on an inner wall of the lower half portion. Dryer. 4. The discharge port for a dried product is constituted by at least one of a top discharge port for discharging the dried product upward and a side discharge port for discharging the dried product to the side. A swirling air-flow dryer according to claim 1. 5. The swirling air flow system according to claim 1, wherein a hot air supply port for feeding hot air from a tangential direction of the dryer main body is provided at one or more locations on a wall surface of the dryer main body. Dryer. 6. The swirling air flow dryer according to claim 1, further comprising an auxiliary hot air supply port for sending auxiliary hot air from a tangential direction of the dryer main body to a side portion of the dryer main body.