JP2002162164A - Drying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drying system in which the applicable shapes of a member being dried is widened while enhancing the drying efficiency and assembling performance. SOLUTION: A drying tank 1 comprises a stack of a plurality of drying shelves 3a, 3b, 3c and 3d wherein the drying shelf 3 has a spiral drying passage 20 provided with a drip hole 23. A water pan 5 is fixed, removably through a fastener 19, to the lower surface of the drying shelf 3 while abutting against the lower surface of a plurality of ribs 4a, 4b, 4c and 4d. An article to be dried is thrown into the drying shelf 3 to the vicinity of the center thereof and rolled along the spiral drying passage 20 by vertical and circumferential vibration of a shaker 2. The dried article is fed out from a chute opening 10 made at the end of the drying passage 20 to a lower stage drying shelf through a chute 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drying apparatus for removing moisture adhering to the surface of a member to be dried, which is mainly made of metal, plastics and ceramics.

[0002]

2. Description of the Related Art In general, a substance (hereinafter referred to as dirt) that interferes with the intrinsic properties and performance of an object is attached to the surface of the object made of a material such as metal, plastics, and ceramics. In order to secure the original properties and performance, these dirts are washed using a liquid such as water (hereinafter referred to as washing water). And
When such washing is performed, the washing water adheres to the surface of the object, and therefore, a drying apparatus is conventionally used to dry the washing water to clean the surface of the object.

Conventionally, the most widely used drying apparatus includes a centrifugal dewatering hot air drying (hereinafter referred to as centrifugal drying) type. In this method, an object to be dried is placed in a basket in a centrifugal dryer, and the basket is rotated at a high speed to shake off (dehydrate) the adhered liquid and simultaneously send hot air to dry. When this technique is used, since the drying is performed using both the dewatering action and the hot air action, there is an advantage that the drying time can be relatively shortened and the energy required for the drying can be reduced. However, this conventional apparatus has a drawback that the object to be dried is likely to be deformed because the object to be dried jumps before sufficient centrifugal force is applied, and the objects to be dried collide with each other or collides in the basket. I have. In addition, since the drying basket is cylindrical to take out the material to be dried from the drying basket, a special take-out device is required to take out the material to be dried without flawing it, and the whole device becomes complicated. there were.

[0004] As another conventional apparatus which compensates for the drawbacks of the conventional apparatus of the centrifugal drying method, an object to be dried is placed on a net-shaped transporting conveyor, and the conveyor is passed through a heating tunnel. In this conventional apparatus, after the material to be dried is drained by a net, it is heated and dried in a heating tunnel. In this case, there is an advantage that the object to be dried is not deformed due to the collision between the objects to be dried and the inner surface of the car, which is generated in the conventional apparatus of the centrifugal drying method. However, in this conventional device,
Since there is only a draining action by gravity on the net, most of the liquid attached to the object to be dried at the time of cleaning must be evaporated and dried in the heating tunnel, which requires a large amount of heating energy and a long drying time. . Therefore, the equipment becomes long, and when the object to be dried is a metal member, particularly an iron member, it is heated for a long time in a state in which the washing water is adhered, so that there is a disadvantage that the danger of rust generation increases.

The inventor of the present invention has intensively studied a drying apparatus which is excellent in drainage of washing water and has high drying efficiency, and has applied for a series of patent applications. In the prior patent application by the present inventors, for example, as disclosed in Japanese Patent Application Laid-Open No. H10-160346, a drying tank is placed above a vibrator that applies three-dimensional vibration, and the cylindrical shape of the drying tank is set. We have developed a drying device that has a structure in which a drying path is fixed spirally along the wall of the device. These technologies are revolutionary technologies that take advantage of the advantages of each such as the centrifugal / hot air drying technology and the net conveyor type hot air drying technology and cover the shortcomings so far.

The drying apparatus disclosed in Japanese Patent Application Laid-Open No. 10-160346 completes drying while the member to be dried is rolled and conveyed from below to above a spiral drying path provided on a cylindrical wall surface. Rolling and conveying is a combination of vertical vibration from the vibrator and vibration in the circumferential direction, which causes the member to be dried to be lifted in the direction of travel in the drying path, and the member to be dried is subjected to the next lifting vibration. Until the vibration is applied, the user tries to descend on the dry roadbed, but then rises little by this repeated vibration in which the lifting vibration is applied.

[0007] However, following various embodiments,
Although the effects such as energy saving, drying quality, and improvement in productivity are exhibited in writing, it has been found that the objects to be dried are limited. One of the inapplicable members to be dried is a spherical member, and the other is a needle-like member or a member having a thin projection on a part thereof.

In the case of a spherical member, in a repeated vibration, the descending distance of falling down during the vibration pause time is larger than the raised height position, so that the member to be dried rolls down and is not applicable in some cases. . Further, depending on the needle-shaped member and the member having a thin protrusion, obstacles such as slipping through or penetrating a drainage through hole provided on the road floor surface were caused. That is, the conventional method has a great limitation in the applicable range of the member to be dried.

Other drying apparatuses for drying the wet powder are disclosed in Japanese Patent Application Laid-Open No. Sho 61-240089, and Japanese Utility Model Application Laid-open No. Sho 59-8.
Japanese Patent No. 4395 discloses a drying apparatus in which spiral drying paths are provided in multiple stages. However, the objects to be dried in these apparatuses are wet granules, and there is no need to consider the drainage of water droplets on the surfaces of the objects to be dried. Therefore, these devices perform drying by hot air drying, but do not have a structure that takes into account water wetting due to re-adhesion of water droplets.

[0010]

As described above, the prior art has the problem of narrowing the applicable range of the shape of the member to be dried while improving the excellent effects described in Japanese Patent Laid-Open No. 10-160346. . Therefore, it is an object of the present invention to be able to adapt to a wide range of members to be dried while maintaining or improving this excellent effect.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drying apparatus in which the application of a member to be dried is widened and drying efficiency and assemblability are good.

[0012]

According to a first aspect of the present invention, a plurality of drying shelves (3a, 3b, 3c, 3d) and a plurality of drying shelves (3a, 3b, 3c, 3d) are mounted on the upper surfaces of the respective drying shelves (3a, 3b, 3c, 3d). Vibrator (2) that applies vertical and circumferential vibrations to the lower surface of a drying tank (1) having a cover (8) and a peripheral wall (7).
Are integrally connected to each other, wherein the drying shelf (3) has a spiral drying path (20) on the upper surface and a plurality of ribs (4a, 4b, 4c) radially provided on the lower surface. , 4
d), a plurality of drain holes (23) provided in the subgrade (21) of the drying path (20), and a chute port (10) for sending the material to be dried to the lower drying shelf. A water tray (5) is provided in contact with the lower surface of the rib (4a, 4b, 4c, 4d) of each drying shelf, and the water tray (5) is provided with the drain hole (2).
3) having an outlet (6) for receiving the washing water dropped from the drying shelf and discharging the washing water;
b, 3c, 3d), there is provided a chute (9) for sending the material to be dried from the chute opening (10) to the lower drying shelf, and a drying path (20) in the lowermost drying shelf (3d). A drying apparatus characterized in that a hot air inlet (12) for connecting a hot air generator (11) for blowing hot air to the hot air generator (11) and a material to be dried (15) are provided.

According to this structure, since the drying shelf having the spiral drying path 20 is provided, there is no reverse running of the drying object caused by spirally raising the drying object, and the object to be dried is not subjected to the drying operation. The range of application can be expanded to spherical members. In addition, the strength of the drying shelf 3 can be reinforced by the ribs 4, and the water receiving tray 5 can be detachably attached to the ribs 4, so that the assembly of the apparatus is simple. Further, since the direction of the hot air is opposite to the rolling direction of the object to be dried, and the object to be dried and the hot air face each other, that is, so-called countercurrent drying, the drying efficiency is good. Moreover, subgrade 2
1. By blowing hot air into the drying path 20 surrounded by the partition wall 27 and the cover 8, the washing water dropped from the object to be dried is dripped from the drain hole 2 to the water receiving tray 5 by the wind pressure, and once shaken down. There is an advantage that there is little possibility that the washed water which is to be re-wetted to the object to be dried.

According to a second aspect of the present invention, in the first aspect, the drain groove (2) extends on the roadbed (21) in the rolling direction of the material to be dried.
2) is provided, wherein the roadbed surface has a slope inclined downward toward the drainage groove (22), and the drainage hole (23) is provided in the drainage groove (22). And

According to this configuration, by providing the inclined surface on the roadbed surface, the washing water shaken off from the material to be dried easily flows into the drain groove below the inclined surface. As a result, the cleaning water is provided in the drain groove. The washing water is easily dripped from the drain hole into the water receiving pan.

According to a third aspect of the present invention, in the second aspect, a foam or mesh (24) having open cells is provided on the upper surface of the drain groove (22) or the drain hole (23).

According to this structure, the upper portion of the drain groove or drain hole is covered with a foam or mesh 24 having open cells such as permeable ceramics or sintered glass, so that the needle-shaped member or a part thereof has a thin projection. Even if it is a member, it can be rolled and conveyed without being caught in a drain groove or a drain hole, and the range of applicable shapes of the object to be dried is expanded.

The invention according to claim 4 is characterized in that, in claim 1, the unevenness is provided on the surface of the roadbed (21), and the unevenness is provided on the surface of the roadbed to suppress the slipping of the material to be dried. Can be.

According to a fifth aspect of the present invention, in the first aspect, the center of the drying shelf is formed of a cylindrical body (17) having a flange (16). With this configuration, the upper and lower drying shelves can be detachably connected, and the drainage can be guided to the hollow of the cylindrical body. That is, it has a function of being easy to assemble and draining with a simple structure.

According to a sixth aspect of the present invention, in the first aspect, a drain pipe (13) is provided in a water receiving tray provided in contact with a lower surface of the lowermost drying shelf (3d). The drainage shaken down by the vibration is reliably discharged to the outside of the drying tank system to prevent water droplets and steam from re-adhering to the object to be dried.

According to a seventh aspect of the present invention, in the sixth aspect, the water tray provided in contact with the lower surface of the lowermost drying shelf (3d) comprises a cylindrical trough (20). According to this configuration, it is possible to reinforce the joining strength at the connection point between the drying tank 1 and the vibrator 2.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings.

FIG. 1 is a partially cutaway front view showing a drying apparatus of the present invention. The present drying device includes a drying tank 1 and a vibrator 2 integrally connected to a lower surface thereof. A vibration motor (not shown) is mounted inside the vibrator 2. In this vibration motor, a weight is eccentrically attached to a rotating shaft of the motor, and the motor and the weight are housed in a motor housing. As the motor rotates, the motor housing vibrates in a plane substantially perpendicular to the rotation axis of the motor. By being attached to the vibrator 2 such that the rotation axis of such a vibration motor is inclined with respect to the vertical direction,
With the operation of the vibration motor, the drying tank 1 can be vibrated vertically and circumferentially. That is, by adjusting the inclination of the vibration motor, the vibration component in the circumferential direction of the drying tank 1 increases as the rotation axis of the vibration motor approaches the vertical direction, and the drying tank 1 increases as the rotation axis of the vibration motor approaches the horizontal direction. , The vertical vibration component increases. Therefore, if the inclination of the vibration motor with respect to the vibrator 2 is adjusted, the drying tank 1
Can be appropriately set.

The drying tank 1 shown in FIG. 1 is a sectional view taken along the line AA ′ of FIG. The drying tank 1 includes a plurality of drying shelves 3a, 3
The drying shelves 3b, 3c, and 3d except for the uppermost stage are integrally formed with a cylindrical body 17 having a flange 16 for connecting upper and lower drying shelves to each other. Is formed. The upper and lower drying shelves are connected and fixed at the flange 16 by detachable fasteners 19 such as bolts and nuts. The center of the uppermost drying shelf 3a has a structure in which the center protrudes so as to receive the object to be dried (see 3a in FIG. 1). The material to be dried is supplied to the drying shelf 3a through the input port 14 provided in the uppermost cover 8, and the drying shelf 3a
, And is sent out to the lower drying shelf 3b via the chute 9, and is sequentially sent to the lower drying shelf 3c,
After passing through 3d, it is taken out from the drying object taking-out port 15.
The cover 8 placed on the upper part of each of the drying shelves 3a, 3b, 3c, and 3d has a structure that can be detachably attached. By using a transparent substrate, the object to be dried in the drying path can be visually observed.

FIG. 2 is a partial top view of the drying shelf 3. The drying shelf 3 has a spiral drying path 20. The material to be dried is
The material to be dried is put in the vicinity of the center of the drying shelf 3 and vibrated in the vertical and circumferential directions of the vibrator 2 so that the material to be dried is formed into a spiral drying path 2
The material to be dried is rolled along 0, and is sent out to a lower drying shelf via a chute 9 from a chute port 10 opened at the end of the drying path 20.

Since the present drying tank is composed of a drying shelf having a spiral drying path 20, there is no reverse running of the object to be dried caused by spirally lifting the object to be dried. Can be applied to spherical members.

In FIG. 1 and FIG. 2, the material to be dried is put into the center of the drying shelf from above, and the material to be dried rolls from the inside of the drying shelf to the outside and is sent out from the outer end to the inside of the lower drying shelf. However, by changing the angle of the motor of the vibrator 2, it is possible to roll the material to be dried from the outside of the drying path to the inside, and in such a case, the chute opening becomes inside. ,
The chute may be installed so as to be thrown from the inside to the outside of the lower drying shelf.

FIG. 3 shows the structure of the lowermost drying shelf 3d.
The drying shelf 3d at the bottom is provided with a hot air inlet 12 that is connected to the drying object outlet 15 and the hot air generator 11.
The hot air from the hot air generator 11 is supplied to the drying path 2 surrounded by the cover 8 placed on the top of the drying shelf 3, the roadbed 21, and the partition 27.
0 is blown in the direction opposite to the rolling direction of the object to be dried, and passes through the chute opening 10 and sequentially goes up to the upper drying shelf. The direction of hot air blowing is opposite to the rolling direction of the object to be dried, and the object to be dried and hot air are opposed to each other. In other words, the water-dried material has more water droplets on the upper drying shelf, but the water droplets are gradually shaken off by the vibration and are almost rolled to the lower drying shelf. The water drops disappear, while the hot air is hot at the bottom and low humidity,
The moisture remaining on the surface of the object to be dried can be completely dried and removed by the high-temperature dry hot air.

In FIG. 1, when a cylindrical one is used as the chute 9, the hot air flows through the inside of the cylinder, so that the diffusion range of the hot air is small. is there. On the other hand, when the chute 9 has a gutter shape (a shape whose upper part is open), there is an advantage that there is no possibility that the object to be dried is clogged with the chute. Also,
The peripheral wall 7 of the drying tank 1 forms a heat insulating material and is configured so that hot air does not diffuse outside.

FIG. 4 is a bottom view of the drying shelf 3. A plurality of ribs (4a, 4b, 4c, 4d) are integrally provided on the lower surface of the drying shelf radially to reinforce the drying shelf.
The central portion of the drying shelf is a cylindrical cavity, and a fastener 19 such as a bolt or a nut for connecting the upper and lower drying shelves is detachably attached to a rib portion around the cylindrical cavity. It can be installed. A rib (4
a, 4b, 4c, and 4d), the water receiving tray 5 is detachably attached by the fastener 19 in contact with the lower surface. A plurality of drain holes 23 are provided in the roadbed portion where the rib is not provided, and washing water dropped from the drain holes 23 is received by the water receiving tray 5 and drained from the drain port 6 provided in the water receiving tray 5. . The ribs (4a, 4b, 4c, 4d) are vertically thick at the center of the water pan 5 and thin at the periphery, and the washing water received by the water pan 5 collects at the center of the water pan 5, Water can be drained from a drain port 6 provided in the water receiving tray 5. In other words, the rib is provided with a slot in which the width of the rib can be adjusted or water can be separately drained so that water can be drained toward the center of the drying shelf 3.
With such ribs 4, the strength of the drying shelf 3 is reinforced, and the water tray 5 can be easily and detachably attached to the ribs. Therefore, the weight of the drying tank can be reduced, and the manufacturing and manufacturing of the drying tank can be reduced.
Easy to assemble.

FIG. 5 shows an example of a road surface of a dry road. The shape of the roadbed surface can be appropriately changed according to the shape of the material to be dried. FIG. 5 is a diagram of a diamond-cut subgrade surface, and a diamond-cut portion having a square pyramid-shaped minute unevenness is provided at an appropriate position on the subgrade surface, and the diamond-cut portion suppresses slippage of an object to be processed. Exerts the action of Drain holes 2 in place
3 is provided, and the washing water attached to the surface of the object to be dried is drained to a water receiving tray. The diamond cut portion may be formed integrally with the drying shelf, or may be formed by a sheet-like member separately formed on the roadbed surface with rubber or the like. FIG. 5 shows one form of a roadbed surface, and may have an uneven shape other than a diamond cut. Providing the road surface with irregularities in this manner has the effect of preventing the rolling speed of the object to be dried from becoming excessively large when the object to be dried is a spherical member. In addition, even in the case of a flat workpiece to be easily adsorbed on a flat road surface due to the surface tension of water, by providing the unevenness, it is possible to prevent the workpiece and the road surface from being attracted by the surface tension, Good rolling conveyance is possible, and, as a result, the material to be dried rolls while bouncing up and down, so that the materials to be dried are less overlapped with each other, drainage is good, and the drying time is shortened. In addition, since a drain hole is provided in the concave part of the unevenness,
The washing water shaken off from the material to be dried is easily collected in the drain hole, and does not adhere to the material to be dried again.

FIGS. 6 and 7 show another example of the roadbed surface. FIG. 6 is a partially enlarged sectional view of the drying shelf, and FIG. 7 is an enlarged top view. The subgrade 21 of the drying road shown in FIGS. 6 and 7 has a downwardly inclined surface facing outward from the center of the drying shelf and a partition 2 outside the subgrade 21.
And a drain groove 22 provided along 7a.
The washing water shaken off from the object to be dried by the vibration flows into the drain groove 22 from the inclined surface, and drops onto the drain plate 5 through a drain hole 23 provided at an appropriate position in the drying path. The upper part of the drain hole 23 or the upper part of the drain groove 22 may be covered with a foam or mesh 24 having open cells such as water-permeable ceramics or sintered glass so that a needle-shaped member or the like is not sandwiched. 6 and 7 show an example in which the roadbed surface is inclined downward in the outer peripheral direction of the drying shelf. However, the roadbed surface is inclined downward in the direction of the center of the drying shelf, and the partition wall 27b on the inner side of the drying path.
A drain groove may be provided along. Further, a drainage groove may be provided at the center of the roadbed 21, and the roadbed may be inclined so as to have a downward slope to the drainage groove.

By providing the inclined surface on the road floor as described above, the washing water shaken off from the material to be dried easily flows into the drain groove below the inclined surface, and as a result, the drain hole provided in the drain groove is provided. This makes it easier for washing water to drop onto the water receiving pan. In addition, the upper part of the drain groove or drain hole is made of permeable ceramics,
By covering with a foam having continuous cells such as sintered glass or a mesh 24, even if the member is a needle-shaped member or a member having a thin projection in a part thereof, it can be preferably rolled and conveyed without being caught in a drain groove or a drain hole. It is possible.

According to the structure of the drying tank 1, the hot air is blown into the drying path 20 surrounded by the subgrade 21, the partition wall 27, and the cover 8, and the washing water shaken off from the material to be dried by the wind pressure. There is an advantage that the washing water dropped easily from the water drain hole 2 to the water receiving tray 5 and the washing water once shaken off is less likely to be wet again to the object to be dried. The washing water dropped from the drain hole 23 flows into the drain port 6 provided in the water receiving tray 5,
Water is drained out of the drying tank system from the water distribution pipe 13 connected to the lowermost water tray. In addition, although the example of the uneven | corrugated shape and the drainage groove structure was given as a roadbed surface, the roadbed surface may be flat depending on the target shape of the thing to be dried.

FIG. 8 shows a structure in which the connection between the lowermost drying shelf 3d and the vibrator 2 is devised. That is, the water tray attached to the lower surface of the lowermost drying shelf 3d has a cylindrical trough shape. A flange that can be detachably connected to the drying shelf 3d is provided on the peripheral edge of the cylindrical trough-shaped water receiving tray 30. In this case, a flange corresponding to the flange is also provided on the lowermost drying shelf 3d. With such a structure, it is possible to reinforce the joining strength of the connection portion between the drying tank 1 and the vibrator 2 and to endure the stress caused by the three-dimensional vibration of the vibrator 2.

[0036]

According to the present invention, the drying shelves 3a, 3b,
A vibrator that applies vertical and circumferential vibrations to the lower surface of the drying tank 1 that includes 3c, 3d, a cover 8 placed on the upper surface of each of the drying shelves 3a, 3b, 3c, 3d, and a peripheral wall 7. 2 is a drying device integrally connected, which is composed of a drying shelf having a spiral drying path 20, so that there is no reverse running of the drying object caused by spirally raising the drying object, The range of application can be extended to a target member having a spherical shape to be dried. Further, by providing the ribs 4 on the lower surface of the drying shelf, the strength of the drying shelf 3 can be reinforced, and the water receiving tray 5 can be detachably attached to the ribs 4 so that the apparatus can be easily assembled. Further, since the direction of the hot air is opposite to the rolling direction of the object to be dried, and the object to be dried and the hot air face each other, that is, so-called countercurrent drying, the drying efficiency is good. In addition, since the hot air is blown into the drying path 20 surrounded by the roadbed 21, the partition 27, and the cover 8, the washing water shaken off from the object to be dried by the wind pressure flows from the drain hole 2 to the water receiving tray 5. There is an advantage that the washing water that has been dropped and shaken off once is less likely to wet again the material to be dried.

A drain groove 22 is provided on the roadbed 21 so as to extend in the rolling direction of the material to be dried, and the roadbed surface has a slope inclined downward toward the drainage groove 22. By providing the cleaning water, the washing water shaken off from the material to be dried easily flows to the drain groove below the inclined surface, and the washing water easily drops from the drain hole provided in the drain groove to the water receiving tray.

By covering the upper portion of the drain groove or drain hole with a foam or mesh 24 having open cells such as water-permeable ceramics or sintered glass, a needle-shaped member or a member having a thin projection on a part thereof can be used. Rolling and transporting is possible without being caught in the drain groove or drain hole,
The applicable range can be extended to a target member having a needle-like member or a member having a thin projection in a part thereof.

[0039]

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an overall configuration of an embodiment of the present invention.

FIG. 2 is a main part top view of the drying shelf of the present invention.

FIG. 3 is a plan view of a main part of a drying shelf 3d according to the present invention.

FIG. 4 is a bottom view of a main part of the drying shelf of the present invention.

FIG. 5 is a configuration diagram illustrating an example of a roadbed according to the present invention.

FIG. 6 is a sectional view showing another example of the roadbed of the present invention.

FIG. 7 is a main part top view showing another example of the roadbed of the present invention.

FIG. 8 is a configuration diagram of another water tray according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drying tank 2 Shaker 3 Drying shelf 5 Water tray 7 Perimeter wall 8 Cover 9 Chute 11 Hot air generator 12 Hot air inlet 13 Drain pipe 15 Drying material outlet 19 Fastening tool 20 Drying path 21 Roadbed 22 Drain hole

Claims (7)

[Claims] A plurality of drying shelves (3a, 3b, 3c, 3);
d), a cover (8) placed on the upper surface of each of the drying shelves (3a, 3b, 3c, 3d), and a lower surface of a drying tank (1) having a peripheral wall (7). A drying device comprising a vibrator (2) for imparting vibration in the direction integrally connected thereto, wherein the drying shelf (3) has a spiral drying path (2) on its upper surface.
0) and a plurality of ribs (4
a, 4b, 4c, 4d), a plurality of drain holes (23) provided in the subgrade (21) of the drying path (20), and a chute port (10) for sending the material to be dried to the lower drying shelf. ), And the ribs (4a, 4b, 4c, 4) of each of the drying shelves.
A water receiving tray (5) is provided in contact with the lower surface of d), and the water receiving tray (5) has a discharge port (6) for receiving the washing water dropped from the drain hole (23) and discharging the washing water. A chute (9) is provided between each of the drying shelves (3a, 3b, 3c, 3d) to send the material to be dried from the chute port (10) to a lower drying shelf. In 3d), a hot air generator (11) for blowing hot air to the drying path (20)
A hot air inlet (12) and an outlet (15) for drying the object to be dried. 2. A drain groove (22) is provided on the roadbed (21) so as to extend in the rolling direction of the object to be dried.
2. The drying device according to claim 1, wherein the surface has a slope inclined downward toward the drainage groove, and the drainage hole is provided in the drainage groove. 3. . 3. The drying device according to claim 2, wherein a foam or mesh (24) having open cells is provided on an upper surface of the drain groove (22) or the drain hole (23). 4. The drying apparatus according to claim 1, wherein irregularities are provided on the surface of the roadbed (21). 5. A center of the drying shelf is provided with a flange (1).
The drying device according to claim 1, comprising a cylindrical body (17) having (6). 6. The drying apparatus according to claim 1, wherein a drain pipe is provided in a water receiving tray provided in contact with a lower surface of the lowermost drying shelf. 7. The drying device according to claim 6, wherein the water receiving tray provided in contact with the lower surface of the lowermost drying shelf (3d) comprises a cylindrical trough (20).