JPH0875357A - Dryer with rotary upward blades - Google Patents

Abstract

PURPOSE: To provide a dryer for pushing material to be dried to a heat transfer surface to be dried while winding it up. CONSTITUTION: A dryer 1 comprises a drying tank 4, a heat transfer surface 2 of the inner wall of the tank 4, heat transfer means for transferring heat to the surface 2, and rotating blades. The blades are extended obliquely upward in the reverse direction to a rotating direction R along the surface 2 while having a clearance U for bringing material to be dried into contact with the surface 2 between the blades and the surface 2, and formed of rotary upward blades 5 made of a plurality of base blades 5a having a length in the circumferential range of 360 degrees as seen from a plane.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying device having a rotary winding blade, and more particularly, to a drying device which winds an object to be dried and presses it against a heat transfer surface to dry it.

[0002]

2. Description of the Related Art As is well known, there are various drying apparatuses for drying an object to be dried in a liquid, fluid, semi-fluid, powder or granular powder form.

As an example of the above, the applicant of the present invention has previously reported that
We proposed the drying device shown in the 19501 publication. That is, the inside of which the material to be dried is charged is a cylindrical drying tank, the heat transfer surface of the inner wall of the drying tank that transfers the heat from the heat transfer means to the material to be dried, and the drying tank located around the drying tank. It is a heat transfer means for transmitting heat to a heating surface, and a drying device rotatably arranged in the drying tank and having a flat surface on which an object to be dried can be placed and raised.

In the drying device, a rotary shaft arranged along the direction of gravity in the drying tank, one vertical spiral rotary blade located around the rotary shaft, and one end thereof rotating. The other end of the shaft is fixed to a vertical spiral rotary vane, and a fixing arm portion that passes through a space for dropping a dried substance to be described later is arranged. Further, between the inner peripheral ends of the vertical spiral rotary blades, around the rotation axis, there is defined a dry space for dropping the dry matter that reaches the upper part of the vertical spiral rotary blade and the vertical spiral rotation is performed. There is a clearance between the outer peripheral edge of the blade and the heat transfer surface so that the material to be dried can be brought into contact with the heat transfer surface.

Next, paying attention to the operation of the material to be dried when the drying device having the vertical spiral rotary blade is used, the material to be dried is mounted on the vertical spiral rotary blade and rises spirally from bottom to top. Then, when it reaches the uppermost portion, it falls downward and rises again in a spiral shape, and the circulation is repeated. Then, in the above-mentioned ascending process, it is pressed against the heat transfer surface by the centrifugal force and dried.

[0006]

According to the above-mentioned prior art, there are some problems in the following points. That is, the material to be dried rises while being placed on the vertical spiral rotary blade and being pressed against the heat transfer surface. However, if the material to be dried is a highly viscous material to be dried, etc., the material to be dried adheres to the vertical spiral rotary blades and the heat transfer surface, and then expands in a dumpling shape from the upper and lower blades. There was a risk of getting stuck. Therefore, the rise of the material to be dried is stopped, the circulation is not performed, and there is a great risk that the drying does not proceed well.

Further, the clearance between the outer peripheral end of the vertical spiral rotary blade and the heat transfer surface is defined as a relatively long spiral shape because the vertical spiral rotary blade extends in a spiral shape. It has been continuously and continuously. For this reason, foreign matter mixed in the material to be dried is often caught in the clearance, and the vertical spiral rotary blade may not rotate properly.

Further, in the fixing arm portion, the rotating shaft and the vertical spiral rotating blade are connected to each other through the space for dropping the material to be dried. For this reason, when foreign matter such as vinyl mixed with the material to be dried falls in the space for dropping the material to be dried, it may be wound around the fixing arm portion. There was a risk that it could get caught in foreign matter and could not circulate properly.

Further, in order to raise the material to be dried,
It is lifted by one vertical spiral rotary blade. Therefore,
The amount of the material to be dried is small compared to the total amount of the material to be dried located at the bottom of the drying tank, and it is difficult to bring the material to be dried into contact with the heat transfer surface at an early stage, and the material to be dried at the bottom. It was difficult to improve the drying efficiency because the accumulated state was likely to continue.

Further, since the vertical spiral rotary blade has a certain distance between the upper and lower blades, when the material to be dried is pressed against the heat transfer surface by centrifugal force,
A heat transfer surface portion not used was likely to occur between the upper and lower blades. Therefore, it is not used compared to the total area of the heat transfer surface,
That is, the area where the material to be dried does not contact is relatively large, and the entire heat transfer surface is not effectively utilized.

Further, the material to be dried is successively spirally raised from the bottom to the top, and after reaching the uppermost portion, it is dropped and again raised. During this time, heat is applied to the material to be dried from the heat transfer surface to dry it. Therefore, in order to efficiently dry the material to be dried, the vertical spiral rotary blade has the best rotation speed adapted to various materials to be dried. Here, if the vertical spiral rotary blade is rotated at a speed higher than the rotation speed at which the drying efficiency of the material to be dried is the highest, the material to be dried does not rise well, and as a result, the drying efficiency also deteriorates. That is, when trying to dry the various objects to be dried most efficiently, it is essential to adjust the rotation speed of the vertical spiral rotary blade, and conversely, this adjustment is troublesome.

Therefore, the object of the present invention is to reduce the risk that an object to be dried, which has a high viscosity, will adhere to the rotating blades and the heat transfer surface and cause a stagnation of the object to be dried. The foreign matter mixed in the material to be dried is less likely to get caught in the clearance between the surface and the foreign material such as vinyl mixed in the material to be dried is not caught on the fixing arm, and it is located at the bottom of the drying tank. The amount of material to be dried is increased compared to the total amount of material to be dried, thereby improving the drying efficiency, effectively utilizing the entire heat transfer surface, and adjusting the troublesome rotation speed of the vertical spiral rotary blade. It is to provide a technique for efficiently drying a material to be dried.

[0013]

[Means for Solving the Problems] In order to solve the above object,
The present invention has the following technical means. That is, this will be described with reference to the reference numerals in the accompanying drawings corresponding to the embodiments.
And a heat transfer surface 2 on the inner wall surface of the drying tank 4 that transfers the heat from the heat transfer means to the material to be dried 3, and a heat transfer means that is located around the drying tank 4 and transfers the heat to the heat transfer surface 2. In the drying device 1, the rotary vanes rotatably arranged in the drying tank 4; 2 has a clearance U that allows it to come into contact with the heat transfer surface 2, extends obliquely upward in the direction opposite to the rotational direction R along the heat transfer surface 2, and each blade has a circumference of 360 degrees when viewed in plan. A rotary winding vane 5 comprising a plurality of base blades 5a having a length within the range. The rotary winding vane 5 places the material to be dried 3 on a plurality of base blades 5a and winds it up. At the same time, the material to be dried is dried by pressing it against the heat transfer surface 2 by the centrifugal force P and continuously raising it along the heat transfer surface 2. It is drying apparatus having a rotating hoisting blades 5, characterized in that is configured.

Another feature is that a plurality of the rotating upper blades 5 are arranged in multiple stages on a central rotating shaft 21 vertically arranged in the drying tank 4 along the direction of gravity. While rotating the central rotary shaft 21 to rotate the rotary hoisting blades 5 in multiple stages, the target object 3 is wound up in each stage,
It is characterized in that it is pressed against the heat transfer surface 2 to raise it, and is continuously raised from the lowermost rotary winding blade 5 to the uppermost rotary winding blade 5 for drying.

[0015]

According to the above construction, since the object 3 to be dried is rolled up by the rotary winding blade 5 and pressed against the heat transfer surface 2 to dry it, even if the object 3 to be dried has a strong viscosity, It is hard to adhere to the rotary winding blade and the heat transfer surface 2, and even if it adheres, the material to be dried 3 is not entirely lifted on the vertical spiral rotary blade but is raised entirely over the heat transfer surface 2. Therefore, the material to be dried 3 does not stagnate.

Further, each of the base blades 5a of the rotary winding blade 5 has a length within a circumferential range of 360 degrees when viewed from a plane, so that the clearance U portion as a whole is larger than that of the conventional one. Short and short, each base blade 5a extends independently
Have clearances and are discontinuous. As a result, the foreign matter is less likely to get caught in the clearance U.

Further, since there is no circulation in which the above-mentioned object to be dried falls through the space A as in the prior art, there is no risk of foreign matter such as vinyl being caught and preventing the flow of the object to be dried from being impaired.

Further, the plurality of base blades 5a allows the material 3 to be dried located at the bottom of the drying tank 4 to be raised by the plurality of base blades 5a, and is located at the bottom of the drying tank 4. To be dried 3 which rises relative to the total amount of dried material 3
Is large, it is easy to bring the material to be dried 3 into contact with the heat transfer surface 2 at an early stage.

Further, while the object 3 to be dried is being wound up by the rotary winding blade 5 and pressed against the heat transfer surface 2, the object 3 to be dried previously wound by the object 3 to be wound up later is pushed upward, By continuously raising the material to be dried 3, the material to be dried 3 rises over the entire surface of the heat transfer surface 2, and the material to be dried 3 can be dried using the entire surface of the heat transfer surface 2. it can.

Further, by rotating the rotary hoisting blade 5, the object 3 to be dried is rolled up and pressed against the heat transfer surface 2 to be dried, thereby increasing the rotational speed of the rotary hoisting blade 5. The dried material 2 can be pressed against the heat transfer surface 2 more strongly. As a result, the material to be dried 3 further rises along the heat transfer surface, spreads in a thin film over the entire surface of the heat transfer surface 2, and heat is easily transferred to the material to be dried 3.

[0021]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 to 5 show the first embodiment, 4 is a cylindrical drying tank, and the inner wall surface is a heat transfer surface 2 that transfers heat from the heat transfer means to the material to be dried 3. The heat transfer means is
A jacket 6 formed around the drying tank 4 and a boiler (not shown) connected to the jacket 6 and sending the steam 7 into the jacket 6 are provided. Above jacket 6
Includes a steam inflow part 11 for guiding the steam 7 into the jacket 6,
A steam discharge part 12 for discharging the steam 7 to the outside of the jacket 6 is provided.

A drying material supply pipe 13 is connected to the wall surface of the bottom portion 4a of the drying tank 4 so that the drying object 3 from a drying material feeding tank (not shown) is supplied by a screw 14. It is supplied to the bottom portion 4a in the drying tank 4. Further, a dry matter discharge pipe 15 is continuously provided on the wall surface of the upper portion 4b, and the dry matter 3 raised while being dried in the drying tank 4 is discharged by the screw 16
Is led to a dry matter storage tank (not shown) outside the drying tank 4.

Next, a rotary winding blade 5 is installed on the bottom 4a of the drying tank 4. The rotary winding blade 5 is connected to a motor 17 attached to the outside of the bottom 4a of the drying tank 4, and can be rotated by the motor 17 about a rotary shaft 5b.

Next, pay attention to the rotary winding blade 5. The rotary winding blade 5 includes a plurality of base blades 5a, and in this example, includes three base blades 5a. Each of the base blades 5a has the same shape. Focusing on one of the base blades 5a, the material to be dried 3
Has a clearance U that allows it to come into contact with the heat transfer surface 2, and extends obliquely upward in the direction opposite to the rotation direction R of the rotary winding blade 5 along the heat transfer surface 2. When the object to be dried 3 is placed on the base blade 5a and is wound up, the clearance U does not easily drop from the object to be dried 3 from the clearance U, and the rotary winding blade 5 causes the heat transfer surface 2 to move. The outer peripheral edge 10 of the base blade 5a for enabling good rotation without contact with
It is the gap between a and the heat transfer surface 2.

Furthermore, the base blade 5a has a length within a circumferential range of 360 degrees when seen from a plane. That is, the base blade 5a is along the heat transfer surface 2 on the inner wall surface of the cylindrical drying tank 4, and the angle about the center of rotation from one end 18 to the other end 19 is 360 degrees or less. . And one end of the base blade 5a
18 is continuous with the scraping portion 20 fixed to the rotating shaft 5b.

As another example of the heat transfer means composed of the jacket 6 and the boiler, a heat transfer means composed of the jacket 6, a heating medium accommodated in the jacket 6, and an electric heater arranged on the outer circumference of the jacket 6. Can be considered. That is,
The heat from the electric heater is transferred to the heat transfer surface 2 via the heat medium. Further, as another example, a heat transfer means composed of an electric heater arranged on the outer periphery of the drying tank 4 is considered,
The heat of the electric heater is transferred to the heat transfer surface 2.

Next, the operation of the drying device 1 will be described. First, the supply screw in the material to be dried supply pipe 13
14 is driven to load the material to be dried 3 into the drying tank 4 from the material to be dried input tank. Then, the motor 17 is driven to rotate the rotary winding blade 5. At the same time, the boiler is driven to introduce the steam 7 into the jacket 6 and heat the heat transfer surface 2.

By the rotation of the rotary winding blades 5, the material to be dried 3 is moved from one end 18 of each base blade 5a to the base blade 5a.
It is placed on the flat surface 8 and moves toward the other end 19 side along the base blade 5a. At this time, the object to be dried 3 is rotated by the base blades 5a and acts upward, so that the object to be dried 3 is wound up and is pressed against the heat transfer surface 2 by the centrifugal force P due to the winding up.

The material to be dried 3 pressed against the heat transfer surface 2 is
It has a surface that contacts the heat transfer surface 2 on one side and an evaporation surface F that contacts the air in the space A in the drying tank 4 on the other side. Then, the material to be dried 3 that has contacted with the heat transfer surface 2 undergoes a certain amount of water evaporation on the spot due to heat from the heat transfer surface 2. The material 3 to be dried, which has a low water content due to evaporation of water during contact with the heat transfer surface 2, moves to the evaporation surface F so as to replace the material 3 to be dried having a high water content. When the material 3 to be dried that has moved to the evaporation surface F is exposed to the air in the space A, the water content further evaporates.

The material to be dried 3 moves from the heat transfer surface 2 side to the evaporation surface F, and at the same time, by the continuous winding by the rotary winding blade 5, the material to be dried 3 to be wound up later is wound up first. The article 3 is pushed, and the article 3 to be dried rises continuously along the heat transfer surface 2. That is, while the material to be dried 3 moves from the heat transfer surface 2 to the evaporation surface F,
It continuously rises along the heat transfer surface 2.

Next, a case where the flow of the material to be dried 3 near the rotary winding blade 5 is viewed from the side will be described. When the rotary winding blade 5 rotates, the material to be dried 3 is wound up by each of the base blades 5a, and as a result, the material to be dried 3 is always continuously wound up. At this time,
Attention is paid to the material to be dried 3 near the two base blades 5a among the plurality of base blades 5a.

That is, of the two base blades 5a, the rotation direction R
To be dried 3 located above the base blade 5a located upstream of the
When jumping obliquely upward from the upstream-side base blade 5a, it tries to move downward due to its weight. On the other hand, the material to be dried 3 located above the base blade 5a located on the downstream side is
The base blade 5a on the downstream side is about to jump out obliquely upward. That is, there is a portion where the flows of the two materials to be dried 3 overlap, and a turbulent flow occurs at the overlapping portion.

In this turbulent flow region, the flow of the material to be dried 3 is intense, and at the same time, the contact speed with the heat transfer surface 2 is high. Then, the number of times the turbulent flow region is generated increases as the number of rotations and the continuous speed of the rotary winding blade 5 increases. Also, the base blade
By increasing the number of sheets of 5a, the number of occurrence points increases, and the contact speed of the material to be dried 3 with the heat transfer surface 2 increases.

In other words, by forming the turbulent flow region, the material to be dried 3 is contacted with a certain contact speed due to turbulent flow in addition to the contact with a certain contact speed due to the rotation at the time of winding. This is performed on the heat surface 2, and the material to be dried 3 is more likely to contact the heat transfer surface 2 due to the synergistic effect of the contact of both, and heat is easily transferred from the heat transfer surface 2 to the material 3 to be dried.

Then, the dried material 3 that has continuously risen along the heat transfer surface 2 and is dried is guided to the inside of the dried material discharge pipe 15 by driving the discharging screw 16 and dried outside the drying tank 4. Carry to the material storage tank.

In the operation of supplying the material to be dried 3 into the drying tank 4 and drying the material in the drying tank 4, the dried material is obtained.
The supply of the material to be dried 4 may be divided to intermittently obtain the dried material, or the material to be dried 3 may be continuously supplied and the dried material may be continuously collected and continuously. Alternatively, a dried product may be obtained.

Next, the second embodiment will be described with reference to FIGS. 6 and 7. In this example, the base blade 5a of the rotary winding blade 5 is changed from three to four. .

Next, a third embodiment will be described with reference to FIG. In this example, the number of base blades 5a of the rotary winding blade 5 is two. A plurality of the rotary winding blades 5 are attached to the central rotating shaft 21 vertically arranged along the direction of gravity in the drying tank 4 in multiple stages.

The operation of the drying device 1 having the multi-stage rotary winding blades 5 will be described. The multi-stage rotary winding blades 5 are rotated so that the material to be dried 3 located at the bottom portion 4a of the drying tank 4 is rotated.
Is wound up by the lowermost rotary winding blade 5. Then, the material 3 to be dried, which has risen while being dried along the heat transfer surface 2, is rewound by the rotary winding blade 5 in the upper stage. In this way, the material to be dried 3 pressed and dried on the heat transfer surface 2 while being rolled up by the rotary winding blades 5 of each stage one after another is wound up by the highest-ranking rotary winding blades 5, and then a dried material is obtained. That is, the material to be dried 3 continuously rises while being dried from the bottom 4a to the top 4b of the drying tank 4.

Next, a fourth embodiment will be described with reference to FIG. In this example, the circumferential portion of one disc is notched, and the notched portion is raised to form the plurality of base blades 5a. Then, one rotary winding blade 5 including the plurality of base blades 5a is fixed to the central rotation shaft 21.

Next, a fifth embodiment will be described with reference to FIG. In this example, two rotary hoisting blades 5 are fixed to the central rotary shaft 21 so as to have two upper and lower stages. Among them, the lower rotary winding blade 5 is the rotary winding blade 5 in which a plurality of base blades 5a are formed by cutting out the circumferential portion of the disk shown in the above-described fourth embodiment. On the other hand, the upper rotary wrapping blade 5 is a rotary wrapping blade 5 in which a circumferential portion of a hollow disc is cut out and the cutout is raised to form the plurality of base blades 5a.
The upper rotary winding blade 5 in the upper stage is
It is fixed to 21 by a mounting arm 22. When the central rotary shaft 21 is rotated and the second rotary winding blade 5 is rotated, the material to be dried 3 continues from the lower rotary winding blade 5 to the upper rotary winding blade 5 in the upper stage. Rise.

Next, a sixth embodiment will be described with reference to FIG. In this example, a plurality of rotary winding blades 5 in which a plurality of base blades 5a are formed by cutting out the circumferential portion of the above-mentioned hollow disk are fixed to the central rotation shaft 21 in multiple stages. Then, when the plurality of rotary winding vanes 5 are rotated, the material to be dried 3 continuously rises from the lowermost rotary winding blade 5 to the uppermost rotary winding blade 5.

As described above, the object 3 to be dried is rolled up by the rotary winding blade 5 and pressed against the heat transfer surface 2 to apply heat from the heat transfer surface 2 to the object 3 to be dried. You can

[0044]

[Effect] As described in detail above, according to the present invention, the object to be dried is rolled up by the rotary winding blade and pressed against the heat transfer surface.
While moving from the heat transfer surface to the evaporation surface, it is possible to continuously raise it along the heat transfer surface, whereby the above-mentioned material to be dried has a lower water content and is dried in the upper part of the drying tank. You can get things.

Since the object to be dried is rolled up and pressed against the heat transfer surface to be dried by the rotary winding blade, even if the object to be dried has a strong viscosity, the rotary winding blade or the heat transfer surface is The material to be dried does not adhere to the heat transfer surface, and even if it adheres, the material to be dried is raised over the entire surface of the heat transfer surface, so that the material to be dried does not stagnate.

Further, each of the base blades of the above rotary winding blade has only a length within the circumferential range of 360 degrees when viewed from the plane, and as a whole, the clearance portion is shorter than that of the conventional one. , Each independently extending base blade has a clearance and is discontinuous. This allows
Foreign matter is less likely to get caught in the clearance.

Further, since there is no circulation in which the material to be dried falls through the space as in the conventional case, foreign matter such as vinyl is not caught and the material to be dried can be satisfactorily fluidized.

Further, by the plurality of base blades, the material to be dried located at the bottom of the drying tank can be raised by the plurality of base blades, and the total amount of the material to be dried located at the bottom of the drying tank can be increased. The amount of material to be dried increases compared to
It is easy to bring the material to be dried into contact with the heat transfer surface at an early stage, and thus improve the drying efficiency.

Further, while the object to be dried is being rolled up by the rotary winding blade, it is pressed against the heat transfer surface, and the object to be dried previously wound is pushed upward by the object to be dried which is to be rolled up later, so that the object to be dried is By raising continuously,
The material to be dried rises vertically over the entire heat transfer surface, and the material to be dried can be dried using the entire surface of the heat transfer surface, whereby the entire surface of the heat transfer surface can be effectively utilized. .

By rotating the rotary winding blade, the dried material is pressed against the heat transfer surface to be dried while the dried material is being rolled up, thereby increasing the rotation speed of the rotary winding blade to dry the dried material. Can be pressed against the heat transfer surface more strongly. As a result, the material to be dried further rises along the heat transfer surface, spreads in a thin film over the entire surface of the heat transfer surface, heat is easily transferred to the material to be dried, and drying efficiency is also improved.
In addition, since the drying efficiency of the material to be dried is improved by increasing the rotation speed of the rotary winding blade, it is possible to perform drying with good drying efficiency regardless of the type of the material to be dried, and various types of conventional materials to be dried. It is not necessary to adjust the rotation speed of the blade according to the object.

Furthermore, since the material to be dried is continuously raised while being moved from the heat transfer surface to the evaporation surface,
When paying attention to each material to be dried, the material to be dried having a higher water content than other materials to be dried is constantly pressed against the heat transfer surface to dry, and there is little drying unevenness in the whole material to be dried,
By continuously increasing, it is easy to continuously and stably obtain a material to be dried having the same water content.

According to the second aspect of the present invention, by forming the rotary winding blade in multiple stages, the heat transfer surface extended in the vertical direction can be effectively used. Further, the material to be dried can be continuously raised from the lowermost rotary winding blade to the uppermost rotary winding blade to be dried. Then, the dried product can be continuously obtained by continuously drying the dried product.

[Brief description of drawings]

FIG. 1 is a partially longitudinal side view of a drying device shown in a first embodiment of the present invention.

FIG. 2 is a plan view of the rotary winding blade of the drying device shown in the first embodiment of the present invention.

FIG. 3 is a side view of the rotary winding blade of the drying device shown in the first embodiment of the present invention.

FIG. 4 is a diagram showing a usage state of the drying apparatus shown in the first embodiment of the present invention.

FIG. 5 is an enlarged view showing a state of the material to be dried when the drying apparatus shown in the first embodiment of the present invention is used.

FIG. 6 is a plan view of the rotary winding blade of the drying device shown in the second embodiment of the present invention.

FIG. 7 is a side view of the rotary winding blade of the drying device shown in the second embodiment of the present invention.

FIG. 8 is a diagram showing a usage state of the drying apparatus shown in the third embodiment of the present invention.

FIG. 9 is a partial cross-sectional perspective view of the drying device shown in the fourth embodiment of the present invention.

FIG. 10 is a partial cross-sectional perspective view of the drying device shown in the fifth embodiment of the present invention.

FIG. 11 is a partial cross-sectional perspective view of the drying device shown in the sixth embodiment of the present invention.

[Explanation of symbols]

 1 Drying Device 2 Heat Transfer Surface 3 Dried Object 4 Drying Tank 5 Rotating Winding Blade 5a Base Blade 8 Flat Surface U Clearance R Rotating Winding Blade Rotation Direction A Space F Evaporating Surface

Claims (2)

[Claims] 1. A drying tank 4 having a cylindrical shape into which the material to be dried 3 is charged, a heat transfer surface 2 on an inner wall surface of the drying tank 4 for transmitting heat from a heat transfer means to the material to be dried 3, and the drying tank. 4, a drying device 1 comprising heat transfer means for transferring heat to the heat transfer surface 2 and rotating blades rotatably arranged in the drying tank 4; , Each blade has a clearance U between the heat transfer surface 2 and the dried object 3 so as to contact the heat transfer surface 2, and is oblique along the heat transfer surface 2 in a direction opposite to the rotation direction R. A rotary hoisting blade 5 that extends upward and has a plurality of base blades 5a each having a length within a circumferential range of 360 degrees when viewed in plan view. 5 is pressed against the heat transfer surface 2 by the centrifugal force P while transferring the material to be dried 3 on a plurality of base blades 5a and winding it up. Drying apparatus having a rotating hoisting blades 5, characterized in that it is configured to dry the object to be dried by increasing continuously along the surface 2. 2. A plurality of the rotating upper blades 5 are arranged in multiple stages on a central rotating shaft 21 vertically arranged along the direction of gravity in the drying tank 4, and the central rotating shaft 21 is rotated. By rotating the rotary hoisting blades 5 that are multi-staged, the material to be dried 3 is rolled up in each step and pressed against the heat transfer surface 2 to be raised, and the rotary hoisting blades 5 from the lowermost step to the uppermost step are rotated. The drying device having a rotary winding blade according to claim 1, wherein the drying device is continuously raised to the winding blade 5 and dried.