JP2020024051A - Dryer comprising mechanism of peeling dried product - Google Patents

Abstract

To develop a vacuum dryer comprising a novel mechanism of peeling a dried product, capable of highly efficiently producing a dried product by drying an aqueous solution or the like of a substance which is as highly deliquescent as to deliquesce in air and is highly adherent to a heating section, to an anhydrous state.SOLUTION: The dryer comprising a plurality of disc groups 5A, 5B each constituted of a plurality of heating discs 50 rotatably disposed in a casing 20, with a hollow heat medium chamber 501 formed in a part of the heating discs 50 in a manner of letting the heat medium chambers 501 present in the plurality of heating discs 50 communicate with each other to allow a heat medium to flow therethrough, is characterized by carrying out a drying operation while scraping off a dried product D sticking to the outside face of the heat medium chamber 501 of each of the heating discs 50 by the heating disc 50 belonging to the neighboring disc group.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus suitable for drying an aqueous solution or the like of a highly hygroscopic substance to an anhydrous state, and more particularly to a dryer having a drying product peeling mechanism that dramatically improves the efficiency of drying product recovery. It is about.

For example, an industrial method for drying an aqueous solution or the like of a substance having a high hygroscopic property as deliquescent in air and having a strong adhesion / fixing property to a heating part to an anhydrous state is established due to the following factors. There is no fact.
First, when a drying treatment at a high temperature is performed to dry to an anhydrous state, the properties of the dried product may be thermally degraded. Therefore, a volatile solvent such as alcohol is added to the aqueous solution. After enabling low-temperature drying by lowering the boiling point (see, for example, Patent Document 1), a vacuum dryer is used to prevent ignition.
However, in the case of a material to be dried in which the deposits on the heating section grow and stick, the automatic recovery rate is extremely low, and it is necessary to manually scrape off the stickies (dry products) that were not automatically collected. However, it is necessary to perform while purging with argon gas or the like for preventing moisture absorption, which is an extremely inefficient operation.
In the current drying facilities for drying aqueous solutions of substances that have a strong hygroscopic property and strong adhesion and fixation to the heating part to an anhydrous state, an inert gas generator, a measure to prevent oxygen deficiency, Ancillary equipment such as a detector, a solvent recovery device, and a cooling device were required, and construction and operation costs increased, and the recovery rate was extremely low, resulting in low production efficiency.

JP 2013-256416 A

  The present invention has been made in view of such a background, and an aqueous solution or the like of a substance having a high hygroscopicity as it deliquesces in the air and a strong adhesive property to a heating unit is dried to an anhydrous state. An object of the present invention is to develop a vacuum dryer having a novel drying product peeling mechanism capable of obtaining a dried product with high efficiency.

That is, the dryer having the drying product peeling mechanism according to claim 1 is provided inside the casing,
A plurality of disk groups each including a plurality of heating disks are rotatably installed, a hollow heating medium chamber is formed in a part of the heating disk, and heating is performed by connecting the heating medium chambers in the plurality of heating disks. The drying apparatus is characterized in that the medium is formed so as to flow therethrough, and the dried product adhering to the outer surface of the heating medium chamber in the heating disk is dried while being scraped off by the heating disks of the adjacent disk group.

  Further, in the dryer having the drying product peeling mechanism according to claim 2, in addition to the above requirements, the casing is provided in a drying chamber, and the heating disk has an elliptical shape in a plan view. The disk group is driven to rotate in the same direction, and the individual heating disks in the disk group are out of phase by a certain angle when viewed from the continuous direction. The heating disk in the disk group has a phase shifted by π / 2 from the heating disk in the adjacent disk group, so that the processing disk of the heating disk in one disk group is The contact portion is brought into a state in which the contact portion of the heating disk of the other disk group comes close to the workpiece contact portion without hindering the rotation of the other disk group. It is configured to be able to scrape off the deposits adhering to the object contact portion and said heat Nakadachishitsu are those comprising as characterized by being formed on the inner side of the workpiece contact.

  According to a third aspect of the present invention, there is provided a dryer having a drying product peeling mechanism, wherein a retreat space in which a heating disk does not act is formed in the drying chamber in addition to the requirements of the second aspect. It is characterized by the following.

  According to a fourth aspect of the present invention, there is provided a dryer having a drying product peeling mechanism, wherein the retreat space is provided with a feed blade for returning the workpiece to the heating disk side in addition to the requirements of the third aspect. It is characterized by having.

According to a fifth aspect of the present invention, there is provided a dryer having a drying product peeling mechanism, wherein the retreat space has a crushing mechanism for crushing the dried product in addition to the requirements of the third or fourth aspect. It is characterized by the following.
The above object is achieved by using the inventions described in these claims.

  According to the first aspect of the invention, the dried product is concentrated on the outer surface of the heat medium chamber whose temperature is intensively increased by the heat medium passing through the heat medium chamber, and the outer surface of the heat medium chamber is concentrated. Since the dried product adhering to the surface can be scraped off by the heating disks of the adjacent disk group, it is possible to prevent lamination of the dried product.

  Further, according to the second aspect of the present invention, the dried product adhered to the processing object contact portion can be scraped off by the processing object contact portion of the heating disks of the adjacent disk group, and the contact portion with the processing object can be scraped off. Since the entire surface of the contact portion of the object to be treated can be automatically cleaned, a manual scraping operation is not required, and the dried product can be automatically collected with high efficiency.

  According to the third aspect of the present invention, it is possible to prevent the object to be processed from being pressed against the end in the drying chamber as the disk group rotates.

  According to the fourth aspect of the present invention, it is possible to avoid a decrease in the drying efficiency by returning the processing object retreated to the retreat space to the disk group side.

  According to the fifth aspect of the present invention, the dried product scraped off from the heating disk can be crushed in the drying chamber, and the dried product which tends to become irregularly shaped is discharged to the outside in a state of a fixed particle size. can do.

It is the side view which shows the dryer of this invention partially see-through, and the longitudinal side view which shows a heating body. FIG. It is a top view same as the above. It is a top view and a longitudinal section showing three kinds of heating disks. FIG. 2 is a perspective view showing two disk groups arranged side by side and an exploded perspective view of a part thereof. It is a figure (a) which shows the processed object contact part seen from the inflow side of the heat medium, and a figure (b) which shows the processed object contact part seen from the outflow side of the heat medium. FIG. 7 is a front view showing a stepwise manner in which a dried product adhered to a workpiece contact portion of a heating disk is scraped off by a workpiece contact portion of a heating disk of an adjacent disk group. It is the side view which shows partially the dryer provided with the disk group which made the phase shift of the heating disk different, and the longitudinal side view which shows a heating body. FIG. It is a top view same as the above. It is the top view and longitudinal section which show the heating disk from which the form was changed. FIG. 4 is a front view showing an embodiment in which four rows of disk groups are provided.

  The best mode of a dryer having a drying product peeling mechanism of the present invention is as shown in the following examples, but it is also possible to appropriately change this form within the scope of the technical idea of the present invention. It is possible.

A dryer 1 having a drying product peeling mechanism of the present invention (hereinafter, abbreviated as a dryer 1) is provided in a drying chamber 2 which is in a vacuum state as an example, as shown in FIGS. The heating element 5 is provided in a casing 20 disposed therein, and the object L is dried by bringing the object L into contact with a heating disk 50 constituting the heating element 5. Needless to say, the present invention can be applied to a drying process in which an object L having a strong adhesive property is simply passed through a hot air flow of an inert gas under an atmosphere of normal pressure.
The dryer 1 of the present invention dries an aqueous solution or the like of a substance having a high hygroscopic property and deteriorating in air, and also having a strong adhesion / fixation property to a heating part, to an anhydrous state, so that a dried product can be obtained with high efficiency. It is a device that can be obtained.
Hereinafter, the components of the dryer 1 will be described in detail.

First, the drying chamber 2 is a box-shaped hollow member. An inlet 21 is formed at a plurality of locations near both upper ends of the drying chamber 2, an outlet 22 is formed at the bottom, and an exhaust port 23 is formed at a side surface.
The discharge port 22 is opened and closed by a bottom plate 25 moving away from and approaching by a discharge mechanism 24 to which a link mechanism or the like is applied.
Further, bearings 3 are provided at appropriate locations on both ends of the drying chamber 2, and the shaft bodies 51 and 52 of the heating element 5 are supported by these bearings 3.
The heating element 5 is formed by connecting a plurality of heating disks 50 in a stacked manner. In this embodiment, two identical disk groups 5A and 5B are provided.

The heating disk 50 is a member having an elliptical planar shape as shown in FIG. 4 as an example, and a hollow portion (a circular shape in a plan view) as a heat medium chamber 501 is partially provided in the heating disk 50, for example. It is formed at each location. In FIG. 4, the AA cutaway view shown in the plan view is shown on the left side of the plan view.
The two surfaces of the heating disk 50 facing each other so as to sandwich the heat medium chamber 501 are referred to as heating surfaces 502a and 502b. The heating surface 502a is formed with an inlet 503 communicating with the heat medium chamber 501. An outlet 504 communicating with the heating medium chamber 501 is formed on the heating surface 502b. The inside of the heat medium chamber 501 is partitioned by a partition wall 501a, and the heat medium flowing into the heat medium chamber 501 from the inflow port 503 passes through the entire area of the heat medium chamber 501, and the outflow port 504 without shortcut. It is configured to be able to flow out of.
In FIG. 4, the portion immediately above the heating medium chamber 501 on the heating surface 502a is a portion where the temperature rise due to the heating medium remarkably appears, and this circular portion is referred to as a heating portion 508a. Similarly, the portion immediately below the heating medium chamber 501 on the heating surface 502b is also a portion where the temperature rise due to the heating medium appears remarkably, and this circular portion is called a heating portion 508b.
Note that when the both outer surfaces of the heat medium chamber 501 are collectively referred to as a heating unit 508.
Here, the inflow port 503 is a hole, while the outflow port 504 is formed in the shape of a perforated projection. The heating medium chambers 501 provided in the respective heating disks 50 are brought into a communicating state by fitting into the inflow port 503 of the heating disk 50. At this time, an O-ring is fitted around the outlet 504 to prevent the heat medium from leaking.

The heating disk 50A shown in FIG. 4A is located at the outflow end of the heat medium in the disk groups 5A and 5B, and the outlet 504 is formed near the center of the flat ellipse.
The heating disk 50C shown in FIG. 4C is located at the inflow end of the heat medium in the disk groups 5A and 5B, and has an inflow port 503 near the center of the ellipse that is a planar shape.
Further, the heating disk 50B shown in FIG. 4B is provided between the heating disk 50A and the heating disk 50C in the disk groups 5A and 5B, has an inlet 503 formed in the heating surface 502a, and further has a planar shape. An outflow port 504 is formed on the heating surface 502b at a position where the inflow port 503 is rotated by a predetermined angle (in this embodiment, for example, 24 °) about the center of the ellipse.
A circular fitting recess 505 is formed at the center of the heating surface 502a of each of the heating disks 50A and 50B. It is formed.

Then, as shown in FIGS. 1 and 5, the outlet 504 and the fitting protrusion 506 of the heating disk 50C are fitted into the inlet 503 and the fitting recess 505 of the heating disk 50B, and these are fastened appropriately by bolting or the like. And integrate.
Next, the outflow port 504 and the fitting projection 506 of the heating disk 50B are fitted into the inflow port 503 and the fitting recess 505 of another heating disk 50B, and these are fastened and appropriately integrated by bolting or the like.
As an example, one heating disk 50C and thirteen heating disks 50B are integrated, and finally, the heating disk 50A is provided with an inlet 503 and a fitting recess 505, and the heating disk 50B is provided with an outlet 504 and a fitting protrusion 506. At the same time, they are fastened together by bolting or the like to be integrated.
Subsequently, the flange of the shaft 52 is attached to the heating surface 502b of the heating disk 50A, and the flow path 52a and the outlet 504 are connected. Similarly, the flange of the shaft 51 is attached to the heating surface 502a of the heating disk 50C. The path 51a and the inflow port 503 are connected to form the disk group 5A. The disk group 5B is similarly configured.

In such an assembling, the outlet 504 in the heating disk 50B is located at a position where the inlet 503 is rotated by 24 ° about the center of the ellipse having a planar shape as described above, and therefore, FIG. As shown, the individual heating disks 50 in the disk groups 5A and 5B are out of phase by a certain angle (24 °) when viewed from the connecting direction. As a result, in the disk groups 5A and 5B, a spiral is formed in the entire outer peripheral portion by the end surfaces 507 of the individual heating disks 50, and the object to be processed is transported.
The heating medium chamber 501 formed in each heating disk 50 is communicated with the heating medium chamber 501 in another adjacent heating disk 50 as shown in FIG. A continuous flow path through which the heat medium flows is formed.

A portion that does not overlap with the adjacent heating disks 50 (non-overlapping portion) is referred to as a processing object contact portion 509. The processing object contact portion 509 is a hatched portion in FIG. 6, and the processing object contact portion 509 includes a part of the heating unit 508.
FIG. 6A is a diagram illustrating the workpiece contact portion 509a viewed from the inflow side of the heat medium, while FIG. 6B is a diagram illustrating the workpiece contact portion 509b viewed from the outflow side of the heat medium. FIG.
The processing object contact portion 509 is formed on the heating disk 50A only on the heating surface 502a, and the processing object contact portion 509a is formed on the heating disk 502B on the heating surface 502a. The processing object contact portion 509b is also formed on the surface 502b, and further, the processing object contact portion 509b is formed only on the heating surface 502b of the heating disk 50C.
As will be described in detail later, when the disk group 5A and the disk group 5B are arranged side by side, the processing object contact portion 509 is configured such that the heating surfaces 502a and 502b of the respective heating disks 50 are fixed. It is a part that approaches while maintaining the clearance. In this sense, for example, the heating surface 502b of the heating disk 50A does not correspond to the workpiece contact portion 509a.

The heating disk 50 in the disk group 5A (5B) is set so that the phase of the heating disk 50 in the adjacent disk group 5B (5A) is shifted by π / 2. Can be brought into a state of being close to the end surface 507 of the heating disk 50 of the disk group 5B (5A) without obstructing the rotation of the disk group 5B (5A).
Note that the processing object contact portion 509 of the heating disk 50 in the disk group 5A (5B) and the processing object contact portion 509 of the heating disk 50 in the adjacent disk group 5B (5A) maintain a proper clearance. In this embodiment, the clearance is set to 0.5 mm as an example.

  A drive mechanism (not shown) for rotating and driving the disk groups 5A and 5B in the same direction is provided, and an appropriate speed reducer, motor and the like are arranged.

  The evacuation space 26 where the heating disk 50 does not act is formed in the drying chamber 2. In this embodiment, the space between the heating disk 50A and the bearing 3 and the heating disk 50C are formed. The space between the bearing and the bearing 3 is defined as a retreat space.

  In this embodiment, a feed blade 7 for returning the workpiece to the heating disk 50 is provided in one or both of the evacuation spaces 26.

Further, a crushing mechanism 8 such as a pin mill for crushing the dried product D may be provided in one or both of the evacuation spaces 26.
Here, the pin mill is formed by combining a rotating pin disk 81 (a disk having a large number of pins attached thereto) and a fixed pin disk 82, and is generated by the rotating pin disk 81. The dried product D is dispersed together with the flow of gas, and the dried product D is pulverized by the impact of the engagement of the two pin disks 81 and 82.
The rotating pin disk 81 has a two-part structure so that it can be attached to and detached from the shaft body 52, and a bolt fastening structure using a flange member can be adopted at the dividing position. Further, as the disk member of the rotating pin disk 81, a perforated plate can be used so that the processing target L flows between the pin disks 81 and 82.

The dryer 1 of the present invention is configured as described above as an example. Hereinafter, using this apparatus, the object to be treated L (has a high hygroscopicity as it deliquesces in air, The manner in which an aqueous solution of a substance having strong fixation) is dried to an anhydrous state will be described.
In addition, a device for stirring and mixing the workpiece L in advance is provided (not shown), and the workpiece L discharged from this device is supplied to the inlet 21 (four as an example) of the dryer 1. Among them, an appropriate route is constructed so that the desired supply port 21 can be supplied.

(Vacuum evacuation)
First, the air in the drying chamber 2 is exhausted from the exhaust port 23 using an appropriate vacuum pump, and the inside of the drying chamber 2 including the casing 20 is brought into a desired vacuum state (for example, 1 to 2 kPa).

(Heat medium supply)
Next, oil (200 to 230 ° C.) as a heating medium is supplied to a continuous flow path through a flow path 51 a formed in the shaft body 51, and the heating medium sequentially passes through the heating medium chambers 501 in each heating disk 50. Then, it is discharged to the outside through a flow path 52 a formed in the shaft 52.
At this time, in each heating disk 50, the heating unit 508 is intensively heated by the heating medium flowing in the heating medium chamber 501.

[Disk group rotation]
Next, the disk groups 5A and 5B are rotated, and the disk groups 5A and 5B rotate in the same direction at the same rotation speed (for example, 10 to 20 rpm).

(Supply of workpiece)
Next, the workpiece L is supplied into the drying chamber 2 from an appropriate inlet 21. At this time, the water level of the workpiece L is lower than the axis of the shafts 51 and 52. To be supplied. In addition, the drying process of the to-be-processed object L by the dryer 1 is performed in a batch type.
The workpiece L supplied to the drying chamber 2 is heated by being brought into contact with the heating section 508 and the workpiece contact section 509 around the heating section 508 to promote drying. At this time, since the object L moves toward the retreat space 26 by the transfer action of the disk groups 5A and 5B, the rotation direction of the disk groups 5A and 5B is reversed at an appropriate timing.

(Dry sticking)
Then, as the drying of the processing target L progresses, a dried product D in an anhydrous state or near an anhydrous state is eventually obtained, and the dried product D in this state has the heating units 508 and It easily adheres to the processing object contact portion 509 in the vicinity.
In the dryer 1 of the present invention, the dried product D is positively attached to the heating disk 50 as a movable member as described above, and the dried product D adheres to the casing 20 surrounding the heating body 5. To prevent this from happening.

[Scraping of dried products]
Next, a manner of peeling the dried product D from the workpiece contact portion 509 will be described.
FIG. 7 is a front view of the disk groups 5A and 5B, both rotating to the left, viewed from the outflow end. The dried product D attached to the workpiece contact portion 509b of the heating disk 50B in the disk group 5A is disc-shaped. This shows, in a step-by-step manner, how the object to be processed is scraped off by the contact portion 509a and the end face 507 of the heating disk 50A in the group 5B.
In the description here, the heating disk 50B in the disk group 5A is simply called a heating disk 50B, and the heating disk 50A in the disk group 5B is simply called a heating disk 50A.
FIG. 7A shows a state in which the dried product D adheres to the entire area of the processing object contact portion 509b of the heating disk 50B (black portion), and the processing object contact portion 509a of the heating disk 50A. Shows a state in which the heating disk 50B is not close to the processing object contact portion 509b, and this state is referred to as a starting state.
FIGS. 7B to 7F show a state in which the disk groups 5A and 5B are rotated to the left by 12 ° from the initial state.
Then, in the state shown in FIG. 7B, the heating disk 50A is heated by the contact portion 509a (the back side of the heating disk 50A in the figure, that is, the heating surface 502a side of the heating disk 50A) and the end surface 507. The scraping of the dried product D attached to the processing object contact portion 509b in 50B has started.
Thereafter, as the heating disks 50A and 50B rotate, the adjacent area also moves, and the dried product D is scraped off in the entire area of the workpiece contact portion 509b of the heating disk 50B.
In the above description, it is assumed that the dried product D adheres to the entire area of the workpiece contacting portion 509b. However, the dried product D preferentially adheres to the high-temperature portion. Is concentrated on the heating section 508 heated to a high temperature by the heat transfer.
The above description focuses on the workpiece contact portion 509b of the heating disk 50B. At the same time, the dried product D adhered to the workpiece contact portion 509a of the heating disk 50A is also replaced with the processing object of the heating disk 50B. The contact portion 509b and the end surface 507 scrape off.

Note that, due to the transfer operation of the disk groups 5A and 5B, the dried product D moves to the evacuation space 26 and is no longer affected by the operation of the heating disk 50, so that it is possible to avoid being pressed by the end in the drying chamber 2. it can.
In addition, since the feed blades 7 are provided in the evacuation space 26, the object to be processed which has been evicted in the evacuation space 26 is returned to the disk group 5A, 5B side, so that a decrease in drying efficiency can be avoided. .

  When the evacuating space 26 is provided with the crushing mechanism 8, the dried product D scraped from the heating disk 50 can be crushed in the drying chamber 2, and the dried product D, which tends to be indefinite, is formed. Can be discharged to the outside in a state of a certain particle size.

[Recovery of dried products]
The dried product D that has been scraped off is discharged to the outside when the bottom plate 25 is separated by the discharge mechanism 24 and the discharge port 22 is opened. Collected.

[Other embodiments]
Although the present invention is based on the above-described embodiments, the following embodiments can be adopted within the technical idea of the present invention.
That is, in the basic embodiment, the individual heating disks 50 in the disk groups 5A and 5B are in a state in which the phases are shifted by a constant angle and 24 ° when viewed from the connecting direction. Is possible.
Specifically, in the embodiment shown in FIGS. 8 to 10, the individual heating disks 50 in the disk groups 5C and 5D are in a state where the phases are shifted by a certain angle and π / 2 when viewed from the connecting direction. .

In this case, as shown in FIG. 11, a heating disk 50D and a heating disk 50E are employed. An inlet 503 is formed in the fitting recess 505, and an outlet 504 is formed in the fitting protrusion 506. . The inflow port 503 and the outflow port 504 are connected to heat medium chambers 501 formed at two locations as in FIG.
The arrangement of the inflow port 503 and the outflow port 504 forms a square arrangement in plan view, and the inflow port 503 is disposed on one diagonal portion, and the outflow port 504 is disposed on the remaining diagonal portion. In these relations, the outlet 504 is located at a position where the inlet 503 is rotated by π / 2 around the center of the ellipse which is the planar shape of the heating disk 50.
Note that FIG. 8 shows a cross-sectional view of the heating disks 50D and 50E, but this is for the sake of convenience to make it easier to see the direction in which the heating medium flows. As shown in FIG.

  Further, in this embodiment, the processing object contact portion 509 (509a) and the heating portion 508 (508a), which are portions that do not overlap the adjacent front and rear heating disks 50, have a form as shown in FIG. Yes, the contact area with the workpiece L can be larger than the workpiece contact section 509 and the heating section 508 shown in the basic embodiment, and the drying efficiency of the workpiece L is improved. is there.

  Further, in this embodiment, since the disk groups 5C and 5D do not have the function of transferring the object to be processed, the retreat space 26 is not provided when the feed blade 7 and the crushing mechanism 8 are unnecessary. Is also good.

  As described above, the embodiment in which the phase of the heating disk 50 is shifted by 24 ° and the embodiment in which the phase is shifted by π / 2 have been described. The series of the heating disks 50 whose phases are shifted by π / 2 may be a group of disks provided on one axis. Thereby, the transfer operation of the processing target L can be suppressed. Further, the angle is not limited to 24 ° and π / 2, and may be a combination with another angle.

  In the above-described embodiment, two disk groups are provided in parallel. However, three or more disk groups may be provided. In FIG. 12, four disk groups 5A, 5B, 5E, and 5F are provided. An example is shown.

DESCRIPTION OF SYMBOLS 1 Dryer 2 Drying room 20 Casing 21 Inlet 22 Outlet 23 Exhaust port 24 Ejection mechanism 25 Bottom plate 26 Evacuation space 3 Bearing 5 Heating body 5A Disk group 5B Disk group 5C Disk group 5D Disk group 5E Disk group 5F Disk group 50 Heating Disk 50A Heating disk 50B Heating disk 50C Heating disk 50D Heating disk 50E Heating disk 501 Heat medium chamber 501a Partition wall 502a Heating surface 502b Heating surface 503 Inlet 504 Outlet 505 Fitting recess 506 Fitting protrusion 507 End face 508 Heating part 508 Heating part 508b Heating part 509 Workpiece contact part 509a Workpiece contact part 509b Workpiece contact part 51 Shaft 51a Channel 52 Shaft 52a Channel 7 Feed blade 8 Crushing mechanism 81 Pin disk 82 Pin disk K D Dried product L Workpiece

Claims (5)

Inside the casing, a plurality of disk groups configured with a large number of heating disks are rotatably installed,
A hollow heating medium chamber is formed in a part of the heating disk, and the heating medium flows through the heating medium chambers in a large number of heating disks,
A dryer having a drying product peeling mechanism, wherein a drying product attached to an outer surface of a heating medium chamber of the heating disk is dried while being scraped off by a heating disk of an adjacent disk group.
The casing is provided in a drying chamber;
The heating disk has an elliptical shape in plan view,
Further, the plurality of disk groups are driven to rotate in the same direction,
The individual heating disks in the disk group are out of phase by a certain angle when viewed from the continuous direction, and a non-overlapping portion of the heating disks caused by this deviation is used as a workpiece contact portion,
Further, the phase of the heating disk in the disk group is shifted by π / 2 from the phase of the heating disk in the adjacent disk group. Without being in contact with the workpiece contact portion of the heating disk of the other disk group, it is configured to be able to scrape off the deposits attached to the workpiece contact portion,
2. The dryer according to claim 1, wherein the heating medium chamber is formed inside a contact portion of the object to be processed.
3. The dryer according to claim 2, wherein a retreat space in which the heating disk does not act is formed in the drying chamber.
4. The dryer according to claim 3, wherein a feed blade for returning the object to be processed to the heating disk side is provided in the evacuation space.
5. The dryer according to claim 3, wherein a crushing mechanism for crushing the dried product is provided in the evacuation space.

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