JP2000111248A - Hot air drying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot air drying apparatus capable of preventing external force from being applied to an article to be dried with a simplified structure and drying the article effectively. SOLUTION: A substantially cylindrical body 4 is constructed by rotatively joining a pair of a substantially cylindrical lower frame section and an upper frame section with a rotating member provided on longitudinally one side. A hot air inflow hole is formed on a one end side of the body 4 and an exhaust hole is formed on the other end side with its axial direction disposed substantially horizontally. A compartment plate having a plurality of vent holes is held between the lower frame section and the upper frame section to define a drying chamber 12 on the upper side and a hot air chamber 11 on the lower side. There is rotatively provided a closing plate for varying a distribution ratio of hot air from hot air introduction means 41 flowing into a first inflow hole 18 and a second inflow hole 19 opposing to the hot air inflow holes of the drying chamber 12 and the hot air chamber 11. An article to be dried thrown into the drying chamber 12 through raw material throwing means 25 is carried and dried, entrained with the hot air passing through the drying chamber 12 while being floated with the hot air blown up through the vent hole 13 from the hot air chamber 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot air drying apparatus for drying an object to be dried with hot air.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for drying processed foods such as hail and snacks or inorganic materials such as chamotte by hot air, for example, a hot air is blown up from below in a longitudinal direction such as a shuttle kiln. There is known a configuration in which an object to be dried supplied from above is dried. However, this vertical one is
The height becomes 10 m or more, and there is a problem of poor enforceability.
For this reason, it is conceivable to install the vertically long device in, for example, a substantially horizontal direction. However, when the shape is substantially horizontal and the dried object slides on the bottom, the contact with hot air becomes insufficient,
The drying efficiency decreases.

Therefore, as described in, for example, Japanese Patent Publication No. 40-720 and Japanese Patent Application Laid-Open No. 53-107772, a rotating drum having an air hole and rotating with its axial direction slightly inclined from a substantially horizontal direction is provided. 2. Description of the Related Art There is known a configuration in which a dried material is charged and the material to be dried is dried by hot air flowing in a substantially radial direction of a rotary drum through a ventilation hole.

[0004]

However, the above-mentioned Japanese Patent Publication No. 40-720 and Japanese Patent Application Laid-Open No. 53-10777 are disclosed.
In the conventional hot-air drying device described in Japanese Patent Laid-Open Publication No. 2 (1993) -1995, there is a possibility that the object to be dried slides on the inner surface of the rotary drum, and sufficient contact with hot air cannot be obtained, resulting in a decrease in drying efficiency.

Therefore, it is conceivable that a stirring blade is protruded from the inner surface of the rotary drum, or a separate microwave drying means is used. However, there is a problem that the structure becomes complicated and productivity cannot be improved. In addition, there is a possibility that the object to be dried is damaged by an external force acting on the object to be dried during the rotation of the rotary drum.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a hot-air drying apparatus which has a simple structure and can efficiently dry an object to be dried by suppressing external force.

[0007]

According to a first aspect of the present invention, there is provided a hot air drying apparatus, comprising: a main body having a hot air inlet through which hot air is introduced and an outlet through which a substance to be dried is discharged together with the hot air. A drying chamber provided in the main body, through which the object to be dried cannot pass and through which the hot air can flow, and a drying chamber communicating with the hot air inlet and the hot air outlet, and a lower portion of the drying chamber below; A partition for partitioning a hot air chamber communicating with the inlet, hot air introducing means for introducing hot air to the hot air inlet, and hot air splitting for introducing hot air flowing from the hot air inlet into the drying chamber and the hot air chamber, respectively. Means.

Then, the hot air is introduced, and the hot air is introduced into the drying chamber and the hot air chamber partitioned by the partition plate having a plurality of ventilation holes through which the material to be dried cannot flow. The hot air introduced by the hot air inlet means is introduced from the hot air inlet, and the hot air flowing into the hot air chamber flows upward into the drying chamber so as to float the material to be dried in the drying chamber through the ventilation holes of the partition plate. The hot air flowing into the drying chamber is circulated toward the drying chamber, and the hot air flowing into the drying chamber conveys the floating drying object while drying it, and the hot air is discharged from the outlet together with the dried object to be dried. Therefore, by dividing the hot air into two flows, a flow for floating the material to be dried and a flow for transporting the material to be dried, the device can be dried with a simple structure without applying an external load such as rotating the main body. The contact efficiency between the object and hot air is improved, and the object to be dried is efficiently dried without being damaged.

[0009] The hot air drying apparatus according to the second aspect is the first aspect.
In the hot air drying apparatus described above, the main body is formed in a longitudinal shape, and has a hot air inlet opening at one end and an outlet opening at the other end.

[0010] Since the hot air inlet is opened at one end of the elongated main body and the outlet is opened at the other end, it is formed in a tunnel type which can be easily constructed, and the apparatus cost is reduced. In addition, the workability and versatility are improved, for example, by reducing the installation space by being formed in a substantially U shape in plan view.

[0011] The hot air drying apparatus according to claim 3 is the first aspect of the present invention.
Or the hot-air drying device according to claim 2, wherein the drying chamber has a first inlet communicating with the hot-air inlet, the hot-air chamber has a second inlet communicating with the hot-air inlet, Is provided with a closing plate that changes an opening state of the first inlet and the second inlet.

The opening state of the first inlet communicating with the hot air inlet of the drying chamber and the second inlet communicating with the hot air inlet of the hot air chamber are varied by the closing plate of the hot air dividing means. With a simple structure, the hot air is easily divided into two flows, a flow for floating the object to be dried and a flow for conveying the object to be dried.

[0013] The hot air drying apparatus according to the fourth aspect is the first aspect.
In any one of the hot air drying apparatuses according to any one of (3) to (3), the main body has an opening closed on the upper surface by a partition plate, and a lower frame part that partitions the hot air chamber with the partition plate, and an opening on the lower surface. And an upper frame section that partitions the drying chamber with the partition plate by closing the upper surface of the lower frame section so as to be openable and closable.

A lower frame portion having an opening on the upper surface and closed by the partition plate and defining the hot air chamber by the partition plate, and an upper surface of the lower frame portion having an opening on the lower surface so as to be openable and closable. Since the main body is composed of the partition and the upper frame section that divides the drying chamber, maintenance and inspection and cleaning of the inside of the main body are easy, and the maintenance management is improved, and the type of material to be dried is different. Can be easily switched, the partition plate can be replaced, and the versatility is improved.

[0015] The hot air drying apparatus according to the fifth aspect is characterized by the first aspect.
5. The hot air drying apparatus according to any one of the above items 4, wherein the main body is provided with a raw material charging means for charging a material to be dried into the drying chamber.

Since the main body is provided with a raw material charging means for charging the object to be dried into the drying chamber, the object to be dried can be continuously dried.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hot air drying apparatus according to the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a hot-air drying device. The hot-air drying device 1 is formed by joining a pair of lower frame portions 2 and upper frame portions 3 having a substantially semicircular cross section to each other. A tunnel kiln-type main body 4 formed in a substantially longitudinal cylindrical shape having a size of 10 to 20 m is provided. The lower frame portion 2 and the upper frame portion 3 are respectively provided with flange portions 5 and 5 protruding outward in a flange shape on both side edges in the longitudinal direction. In addition, each of the lower flange portion 5 and the upper flange portion 5 of the upper frame portion 3,
5 is provided with a rotating member 6 such as a butterfly board, and the other side of the lower frame portion 2 and the upper frame portion 3 on the other side of the flange portions 5 and 5 are relatively rotatably joined. Further, the other flanges 5, 5 of the lower frame portion 2 and the upper frame portion 3 are provided with locking means (not shown) which can be disengaged from each other, and the lower frame portion 2 and the upper frame portion 3 are locked by the locking means. A substantially cylindrical main body 4 is formed by being integrally joined.

A leg (not shown) is provided on the outer surface of the lower frame 2, an opening covered by the upper frame 3 of the lower frame 2 opens upward, and the axial direction of the main body 4 is substantially equal to that of the lower frame 2. It is installed to be horizontal.

A hot air inlet (not shown) is formed at one end in the axial direction of the main body 4, and a discharge port (not shown) is formed at the other end. The lower frame 2 is provided with an inclined surface 7 which is located at the end on the discharge port side and is inclined so that the edge on the discharge port side is continuous with the flange 5.

On the other hand, the flanges 5 of the lower frame 2 and the upper frame 3
A substantially flat partition plate 8 having a flat surface along the radial direction of the main body 4 is sandwiched and fixed between the five. This partition plate 8
The length dimension is slightly shorter than the length dimension of the main body 4, the width dimension is substantially flat plate shape larger than the diameter dimension of the main body 4, and both edges in the longitudinal direction are the flange portions 5, 5 of the lower frame portion 2 and the upper frame portion 3. Is sandwiched between. The partition plate 8 forms a hot air chamber 11 in the main body 4 with the lower frame 2 below the partition 8 on the lower frame 2 side, and the partition on the upper frame 3 side. Upper frame 2 above plate 8
A drying chamber 12 is defined by and.

The partition plate 8 is provided with a plurality of substantially circular ventilation holes 13 through which hot air can flow, for example. The drying chamber 12 and the hot air chamber 11 communicate with each other through the ventilation holes 13 of the partition plate 8.

Further, between the flanges 5 and 5 of the lower frame 2 and the upper frame 3, a partition plate 8 is positioned and a main body 4 is formed.
A heat-resistant seal member 14 for maintaining airtightness in the inside is provided.

Further, on the hot air inlet side of the main body 4, a dividing chamber 16 is defined without the partition plate 8 being located. The drying chamber 12 and the hot air chamber 11 communicate with each other via the flow dividing chamber 16 and also communicate with the hot air flow inlet. The edge of the surface of the drying chamber 12 facing the flow dividing chamber 16 becomes the first inlet 18, and the hot air chamber The edge of the surface facing the 11 flow dividing chamber 16 is the second inlet 19.

In the flow dividing chamber 16, a flow dividing chamber of the partition plate 8 is provided.
A shaft 21 is rotatably disposed along the 16-side edge so as to penetrate the main body 4 in the diameter direction. The shaft 4 is supported by a bearing such as a bearing provided on the partition plate 8 or a bearing such as a bearing provided on the lower frame 2 or the upper frame 3 as appropriate. And this shaft
A substantially semi-disc-shaped closing plate 22 is integrally provided on the rim 21 so that the axial direction of the shaft 21 is located on a diametrical edge of the closing plate 22. Further, at one end of the shaft 21 protruding from the main body 4, a rotation unit (not shown) for rotating the shaft 21 is provided, and a hot air distribution unit 23 is configured. The closing plate 22 is rotated in a range from a position where the first inlet 18 of the drying chamber 12 is closed to a position where the second inlet 19 of the hot air chamber 11 is closed by the rotation of the shaft 21 by the rotating means. To change the opening ratio of the first inlet 18 and the second inlet 19.

On the other hand, the upper frame 3 of the main body 4 is provided with raw material charging means 25 for charging the material to be dried into the drying chamber 12. The raw material charging means 25 projects outwardly in a substantially cylindrical shape, one end of which is connected to an edge of a raw material charging port 26 formed in the upper frame portion 3 located on the side of the flow dividing chamber 16 of the drying chamber 12. Raw material path
27, and a rotary valve 28 provided at an intermediate portion of the material passage 27.
And Then, the object to be dried is fed into the drying chamber 12 from the raw material inlet 26 through the raw material path 27 by the rotation of the rotary valve 28. Note that the present invention is not limited to the rotary valve 28, and the rotary valve 28 may not be provided. However, it is preferable to provide the rotary valve 28 in order to prevent the backflow of hot air and the inflow of outside air due to the ejector effect.

On the discharge port side of the main body 4, a fine powder removal chamber 31 is defined and formed without the partition plate 8 being located. And
In the fine powder removing chamber 31, there is provided fine powder removing means 32 for removing an object to be dried which has become partially fine. The fine powder removing means 32 is rotatably disposed along the edge of the partition plate 8 on the side of the fine powder removing chamber 31 so that the rotating shaft 33 passes through the main body 4 in the diametrical direction, similarly to the hot air distribution means 23. I have. And
One edge of a flat opening / closing plate 34 is integrally provided on the rotating shaft 33, and the drying chamber 12 is normally in communication with the discharge port and the hot air chamber 11 is not in communication with the discharge port. The opening / closing plate 34 opens and closes the hot air chamber 11 from the fine powder removing chamber 31 so that the hot air chamber 11 communicates with the discharge port by the rotation, and discharges foreign matter such as debris of the material to be dried accumulated in the hot air chamber 11 together with the hot air. A fine powder removing means 32 for discharging the powder is provided.

On the other hand, the hot air drying device 1 is provided with hot air introducing means 41 for introducing hot air into the main body 4 from the hot air inlet of the main body 4. The hot air introducing means 41 includes a heating means 42 for heating the air, and a first blower 43 which is a blowing means for blowing the air heated by the heating means 42 to the hot air flow inlet of the main body 4. As the hot air introducing means 41, for example, a heating means 42 is disposed between the first blower 43 and the hot air inlet of the main body 4, and the air blown to the hot air inlet by the first blower 43 is supplied. The heating means 42 heats and introduces hot air, or the heating means 42 is arranged near the hot air flow inlet in the main body 4 and the air blown by the first blower 43 into the hot air flow inlet is heated by the heating means. A configuration such as heating at 42 is also possible.

The hot-air drying apparatus 1 is provided with a separating means 45 into which the dried material which has been dried and discharged from the outlet of the main body 4 together with the hot air flows in. This separation means 45
A substantially cylindrical separation tank 47 having a funnel-shaped stacking section 46 whose upper end face is closed and which opens upward at the lower end face is provided.
In the upper part of the separation tank 47, an exhaust port (not shown) through which hot air is drawn out and discharged from a substantially central portion by a second blower 48 as an exhaust means is formed. The object to be dried discharged from the outlet together with the hot air flows in a spiral form along the tangential direction from the outer peripheral surface of the separation tank 47, and the object to be dried is deposited on the accumulation portion by its own weight, and only the hot air is exhausted from the outlet. To separate the hot air and the object to be dried. Note that a mesh filter may be provided at the exhaust port.

Further, a discharging means such as a rotary valve for discharging the material to be dried deposited on the deposition section 46 is provided at the bottom of the deposition section 46.
49 are arranged. Incidentally, the discharging means 49 is not limited to the rotary valve as in the case of the raw material charging means 25, and may be discharged by rotation of a screw having a spiral blade or the like,
Either configuration may be used, such as discharging by fine vibration of a feeder or the like.

Next, the drying operation by the hot air drying device will be described.

First, a first blower 43 and a second blower
While driving 48, the heating means 42 is heated, and the air heated by the heating means 42 is sent as hot air from the hot air inlet to the flow dividing chamber 16 in the main body 4. Further, the opening ratio of the first inlet 18 of the drying chamber 12 and the second inlet 19 of the hot-air chamber 11 is reduced by, for example, the closing plate 22 which rotates the shaft 21 appropriately by the rotating means and integrally rotates. In the case of processed foods such as hail, the ratio of hot air flowing from the first inlet 18 and the second inlet 19 is 4: 6, and in the case of inorganic materials such as chamotte, the ratio is 2: 8. For example, the opening ratio is set so as to be a branch ratio appropriately set according to the true specific gravity of the material to be dried and the air resistance.

The hot air that has flowed into the flow dividing chamber 16 is supplied to the drying chamber 12 and the hot air chamber 11 by the closing plate 22 of the hot air dividing means 23.
And flows into the drying chamber 12 and the hot air chamber 11 from the first inlet 18 and the second inlet 19.

Next, by rotating the rotary valve 28 of the raw material charging means 25, the material to be dried is charged into the drying chamber 12 in the main body 4 from the raw material charging port 26. Here, from the second inlet 19, the hot air chamber 11
The hot air that has flowed into the drying chamber 12 flows into the drying chamber 12 through the ventilation holes 13.
It is suspended by the hot air blown up from 13. further,
The object to be dried is conveyed toward the outlet while floating by the hot air flowing into the drying chamber 12 from the first inlet 18. The object to be dried is dried by hot air while being transported while floating.

The dried object is discharged from the discharge port together with the hot air, and spirally flows into the separation tank 47 of the separation means 45. The object to be dried is deposited by its own weight on the deposition section 46 at the bottom of the separation tank 47. The hot air is exhausted from the exhaust port. Thereafter, the material to be dried deposited on the deposition unit 46 is discharged by a discharge unit 49 such as a rotary valve provided at the bottom of the deposition unit 46.

After the drying is completed, the rotating shaft 33 of the fine powder removing means 32 is rotated to rotate the open / close plate 34, and the hot air chamber 11 is opened to the fine powder removing chamber 31 to communicate with the discharge port. Foreign matter, such as debris of the material to be dried, accumulated in the hot air chamber 11 is discharged from the discharge port together with the hot air.

Next, the heating means 42 is stopped and the first
Of the blower 43 and the second blower 48 are stopped. And
The locking means is released, and the upper frame 3 constituting the main body 4 is rotated upward with respect to the lower frame 2 by the rotation member 6 to open the upper part of the partition plate 8. Thereafter, the material to be dried remaining on the upper surface of the partition plate 8 and the material to be dried blocked by the ventilation holes 13 are removed.
Further, when a part such as a piece of a dried object is dropped into the hot air chamber 11 through the vent hole 13, the partition plate 8 is removed from the lower frame portion 2, and the upper part of the hot air chamber 11 is opened. Remove and clean.

On the other hand, when another object to be dried is dried,
In place of the removed partition plate, another partition plate 8 that opens a ventilation hole 13 corresponding to another material to be dried is attached to the flange portions 5 and 5 of the lower frame portion 2.
What is necessary is just to position it on the seal member 14 while positioning it, cover the upper part of the lower frame part 2 by rotating the upper frame part 3, and lock and set the locking means again.

As described above, the hot air is divided into two flows, that is, a flow for floating the object to be dried and a flow for conveying the object to be dried. No rotation or vibration,
The contact efficiency between the object to be dried and the hot air can be increased with a simple structure that does not require a structure for stirring or the like, and the object to be dried can be efficiently dried without being damaged.

Further, since the main body 4 is formed in a longitudinal tunnel kiln type with a hot air inlet opening at one end in the longitudinal direction and an outlet at the other end, the structure is simple and the construction is easy, and the equipment cost is reduced. It can be reduced, for example, installed near the wall,
For example, by forming a U-shape in plan view, the installation space can be reduced, for example, the installation space can be reduced. Moreover,
Since the drying chamber 12 and the hot air chamber 11 are arranged side by side in the longitudinal direction in the main body 4, the hot air flowing from the hot air inlet is
Since the air is similarly blown out from the plurality of ventilation holes 13 of the partition plate 8 through the hot air chamber 11, even in the vicinity of the outlet, the temperature does not decrease so much that the material comes into contact with the object to be dried. It can be dried well and the device can be downsized.

Further, a closing plate 22 for changing the opening state of the first inlet 18 communicating with the hot air inlet of the drying chamber 12 and the second inlet 19 communicating with the hot air inlet of the hot air chamber 11 is provided. With a simple structure, the hot air can be easily divided into two flows, a flow for floating the object to be dried and a flow for conveying the object to be dried. The condition can be easily set, and the condition can be set so that drying can be easily and efficiently performed even when different types of materials to be dried are dried.

Since the main body 4 is composed of the lower frame 2 and the upper frame 3, the upper frame 3 is rotated from the lower frame 2 so that the upper part of the lower frame 2 and the lower part of the upper frame 3 can be moved. The opening makes it possible to easily perform maintenance and inspection of the inside of the main body 4 and clean it, thereby improving the maintainability and ease of cleaning, so that different types of objects to be dried can be dried successively.
Can be replaced corresponding to the object to be dried, so that the cleaning property can be further improved, and the object to be dried can be easily switched, and the versatility can be improved.

Further, by continuously supplying the object to be dried to the drying chamber 12 by the raw material charging means 25, the object to be dried can be continuously subjected to a drying treatment and can be efficiently dried.

Further, since the fine-powder removing means 32 is provided, even if foreign matter such as debris of a material to be dried is deposited in the hot-air chamber 11 located below, the hot-air chamber 11 is heated by the hot-air diverting means 23 and the fine-powder removing means 32. Since foreign matter is discharged by communicating with most of the hot air in communication with the inlet and the outlet, maintenance and inspection and cleaning can be easily performed.

In the above embodiment, the first blower 43 and the second blower 48 are provided and described. However, the configuration for introducing hot air into the main body 4 may be only one of them.

As the hot air diverting means, in addition to the configuration based on the rotation of the closing plate 22, any one of the hot air flowing from the hot air inlet, such as a shutter that slides, is diverted to the drying chamber 12 and the hot air chamber 11. It can also be structured.

On the other hand, the main body 4 is not limited to the tunnel kiln type, but may be box-shaped or any shape. In addition to arranging the tunnel kiln-type main body 4 on a straight line, the main body 4 may be formed in a substantially U shape in a plan view, or may be formed in a shape bent a plurality of times in a substantially W shape. Note that the installation space can be reduced by adopting the bent shape as described above.

Further, although the main body 4 is constituted by the pair of lower frame portions 2 and the upper frame portion 3, the main body 4 may be formed in an integral cylindrical shape or may be constituted by a plurality of members. The same effect can be obtained also when the upper frame 3 is not limited to a semicircular shape but is a square shape or the like.

Further, a window or the like for confirming the floating state of the object to be dried may be provided in the main body 4. With this window, the state in which the object to be dried is conveyed while floating can be confirmed, and the ratio of hot air diverted can be easily set.

On the other hand, the fine powder removing means 32 provided with the openable and closable plate 34 in the vicinity of the discharge port of the main body 4 has been described. However, any structure such as opening and closing by sliding movement may be used. Is also good. By providing the fine powder removing means 32, the partition plate 8 may be fixedly provided so as not to be detached from the lower frame portion 2 and may be provided integrally.

[0051]

According to the hot air drying device of the first aspect,
Hot air diverting means is provided to divide and introduce hot air into the drying chamber and hot air chamber, which are formed vertically by a partition plate with ventilation holes provided in the main body. By dividing the flow into two flows, that is, the flow for transporting the object, the efficiency of contact between the object to be dried and hot air can be improved with a simple structure without applying an external load such as rotating the main body. It can be dried efficiently without damaging.

According to the hot air drying device of the second aspect, in addition to the effect of the hot air distribution device of the first aspect, a hot air inlet is opened at one end of the elongated main body and an outlet is opened at the other end. It can be formed into a tunnel type that can be easily installed, and the equipment cost can be reduced. For example, the installation space can be reduced by being installed near a wall or forming a substantially U-shape in plan view, and the workability and versatility can be improved. .

According to the hot air drying apparatus of the third aspect, in addition to the effect of the hot air drying apparatus of the first or second aspect, the hot air dividing means is provided with the first inlet of the drying chamber and the second inlet of the hot air chamber. Since the closing plate that changes the opening state is provided, the hot air can be easily divided into two flows, a flow for floating the object to be dried and a flow for conveying the object to be dried, with a simple structure.

According to the hot air drying device of the fourth aspect, in addition to the effect of the hot air drying device of any one of the first to third aspects, a lower frame portion for partitioning the hot air chamber by the partition plate, and a lower frame. The main body is composed of the upper frame part that partitions the drying chamber with the partition plate by closing the upper surface of the part so that it can be opened and closed, so that maintenance inspection and cleaning inside the main body can be easily performed, and the maintenance controllability can be improved. At the same time, it is possible to easily switch between different types of objects to be dried, to easily replace the partition plate, and to improve versatility.

According to the hot air drying apparatus of the fifth aspect, in addition to the effect of the hot air drying apparatus of any one of the first to fourth aspects, the main body is provided with a raw material input means for inputting a material to be dried into the drying chamber. The object to be dried can be continuously dried.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a hot air drying device of the present invention.

FIG. 2 is a sectional view of the main body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot air drying device 2 Lower frame part 3 Upper frame part 4 Main body 8 Partition plate 11 Hot air chamber 12 Drying chamber 13 Vent hole 18 First inlet 19 Second inlet 22 Closing plate 23 Hot air distribution means 25 Raw material input means 41 Hot air introduction means

Claims (5)

[Claims] A main body having a hot air inlet through which hot air is introduced and a discharge port through which a material to be dried is discharged together with the hot air; and a body provided in the main body, through which the material to be dried cannot pass. A partition plate that has a plurality of ventilation holes through which the hot air can flow, partitions a drying chamber that communicates with the hot air inlet and the hot air outlet above, and partitions a hot air chamber that communicates with the hot air inlet below. A hot air drying apparatus comprising: a hot air introducing means for introducing hot air into the hot air inlet; and a hot air dividing means for introducing hot air flowing from the hot air inlet into the drying chamber and the hot air chamber, respectively. 2. The hot-air drying apparatus according to claim 1, wherein the main body is formed in a longitudinal shape, and a hot-air inlet is opened at one end, and a discharge port is opened at the other end. 3. The drying chamber has a first inlet communicating with a hot air inlet; the hot air chamber has a second inlet communicating with the hot air inlet; 3. The hot-air drying device according to claim 1, further comprising a closing plate that changes an opening state of the first inlet and the second inlet. 4. A lower frame portion having an opening on the upper surface closed by a partition plate, and defining a hot air chamber by the partition plate;
4. An apparatus according to claim 1, further comprising an upper frame having an opening on a lower surface, wherein the upper surface of the lower frame is openably and closably closed to partition the drying chamber with the partition plate. The hot-air drying device as described. 5. The hot-air drying apparatus according to claim 1, wherein the main body includes a raw material charging means for charging a material to be dried into a drying chamber.