TW201700936A - Drying machine - Google Patents

Abstract

A drying machine (1) includes: a casing (3) having an inlet (7) in which an object to be processed is configured to be introduced on a front side and a discharge port (8) in which the object to be processed which has been heated and dried is configured to be discharged on a rear side, and a plurality of rotary shafts (5) arranged rotatably in the casing (3), a plurality of disks (6) protruding from an outer peripheral surface of each of the plurality of rotary shafts (5) outward in a radial direction and arranged in plural stages in the axial direction of each of the plurality of the rotary shafts (5) at intervals, wherein the adjacent rotary shaft (5) rotates in the same direction, the plurality of disks (6) is formed in a wedge shape in which width thereof becomes narrower toward the direction of rotation forwardly as viewed from an outside in the radial direction.

Description

Drying device

This invention relates to a drying apparatus that heats and processes a processed object such as waste while being conveyed to a predetermined conveyance direction.

Since the processed material such as various raw materials and wastes (sludge) contains a large amount of water, there is a case where the drying process is performed by heating using a drying device.

In the drying apparatus, for example, a casing having a substantially U-shaped cross section, a hollow shaft that rotates two opposite sides in the inside of the casing, and a fan shape that is arranged on the outer circumference of the hollow shaft are known. Drying device for hollow leaf discs.

The drying device is a casing that is formed to be lowered toward the downstream side in the conveying direction. At the upstream end of the casing, a supply port for inputting a workpiece is formed. Inside the casing, a workpiece receiving space that can accommodate the workpiece to be loaded from the supply port is formed. The object to be processed accommodated in the object accommodating space is stirred by the blade disk attached to the outer periphery of the rotatable hollow shaft, and the gravity is applied by the inclination of the casing. The downstream side of the transport direction moves slowly.

A heating medium such as steam, heat medium oil, or warm water is introduced into the inside of the hollow shaft, the inside of the blade, and the inside of the casing. Therefore, the object to be processed is heated while moving to the downstream side in the conveyance direction while being stirred, for example, the state is changed to a liquid state, a clay shape, a block shape, a granular shape, or a powder shape, and is disposed in the casing. The sludge discharge port at the rear end is discharged in a state of being dried in the form of granules or powder.

In the drying apparatus, there is a case where the object to be treated is heated and the drying is performed, and the chance of contact with the heat transfer surface is reduced, and sufficient drying performance cannot be obtained. In this case, there is a proposal that the heat medium temperature or the flow rate of the two hollow shafts having the spiral agitating blades on the outer peripheral surface is different, and the object to be dried supplied to the inside of the drying device is attached to one side. On the other hand, the heat transfer surface of the hollow shaft does not adhere to the heat transfer surface of the other hollow shaft, and the other hollow shaft is used to scrape the object to be treated attached to one of the hollow shafts. A drying device having a stirring effect (for example, refer to Patent Document 1).

Moreover, as shown in FIG. 9, the drying apparatus has the leaf disc 6 for the stirring which extended in the radial direction in the axial direction direction of the rotating shaft 5, and is arrange|positioned in the radial direction. In the drying device, the leaf discs 6 provided on the two rotating shafts 5 are disposed so as to be spaced apart from each other in the direction of the axis O, and are provided so that the respective rotating shafts 5 are reversely rotated toward each other.

Here, the material P1 such as sewage sludge is often subjected to dehydration engineering before being supplied to the drying device, and most of the materials are processed. At this time, the dehydration project puts a polymer flocculant into the object to be treated. When the polymer flocculant is contained in the workpiece, the viscosity of the workpiece P1 is increased, for example, the water content is in the range of about 50 to 60%, and the viscosity is the highest. In other words, the liquid material to be treated is heated in the interior of the drying device, and the water content gradually decreases to a dry powder shape, and is once in a state of high viscosity rubber.

The liquid or powder-like object P1 is in a state in which the casing 3 is tilted in the conveying direction and is stirred, and can be easily moved to the conveying direction. Further, in the processed material having a low viscosity, the clay-like workpiece P1 is cut by the opposing leaf disc 6 at the point where the leaf discs 6 are engaged, and the small pieces run out of the adjacent block. The gaps of the leaf discs 6 with each other can be further moved to between the leaf discs 6 of the downstream section of the downstream side.

However, when the viscosity of the workpiece P1 is high, there is a case where a large block is formed between the leaf discs 6 due to its nature. As described above, when the workpiece P1 becomes a large block, the movement of the squeeze flow cannot be caused. More specifically, the workpiece P1 is in a state of a high-viscosity green rubber, and in the intermediate portion of the drying device, the workpiece P1 is not movable from the adjacent blade discs 6 in the direction of the axis O. Big block. Then, as shown in FIG. 10, there is a case where the rotation shaft 5 and the leaf disc 6 are continuously rotated at that place, and the movement by the agitation and the squeezing flow cannot be performed.

As described above, when the workpiece P1 cannot move, the workpiece P1 is blocked by the workpiece P1. As a result, the range of the object to be treated P1 is increased, and all of the final space is highly viscous. The treatment P1 is full. Moreover, when the workpiece P1 is continuously heated in this state, the moisture content of the workpiece P1 is lowered and hardened. In addition, when the workpiece P1 is in a state of being filled in the space and the state in which the workpiece P1 is solidified, the rotating shaft 5 is stopped by the torque or the like.

In order to avoid the above phenomenon, generally, the flow rate of the workpiece P1 is made very small with respect to the cross-sectional area of the flow path, so as to prevent the subsequent processed object P1 from being blocked, and the large-sized block P1 having a high viscosity is not blocked. Occlusion.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] JP-A-63-189776

In the case of the above-described phenomenon, a large amount of a polymer aggregating agent may be added to a material to be treated containing a large amount of inorganic substances. Further, as a result of intensive research, the present inventors have found that, for example, the ash content of the inorganic component content in the solid matter of the object to be treated is high, and when the viscosity is very high, the object to be treated is heated and dried. It will exhibit extremely specific flow properties and drying characteristics. The above specific form means that, in the usual technical common sense, the higher the viscosity, the lower the drying speed, but in the case of the object to be treated under the above conditions, the drying speed is high even if the viscosity is high. This is conceivable because the ash content rate is dominant.

It is conceivable from such a property that even if the flow rate is sufficiently lowered, the viscosity is rapidly increased due to the rapid drying progress, and a large block is formed between the leaf discs. Case. When the ash content of the material to be processed is high and the viscosity is very high, even if the leaf disc is cut into a clay-like object to be formed into a large block, the object to be processed cannot be cut, and The object to be processed continuously rotates together with the hollow shaft at the same place in a state of a large block. Therefore, in order to prevent the movement of the workpiece from stagnating, it is necessary to further reduce the flow rate of the workpiece, so that there is a problem that the processing ability is remarkably lowered.

An object of the present invention is to provide a drying apparatus capable of smoothly drying and drying a workpiece while suppressing a decrease in processing ability.

According to a first aspect of the present invention, a drying apparatus characterized by comprising: a casing having an input port into which a workpiece is to be processed is formed on a front side, and a discharge drying and drying treatment is formed on the rear side. The discharge port of the workpiece is disposed such that the front side is more inclined than the rear side; and the plurality of rotating shafts are disposed in the front-rear direction of the casing and are disposed at The front side to the rear side of the housing is rotatable about an axis; and a plurality of leaf discs extend from the outer peripheral surface of the rotating shaft toward the radially outer side in the circumferential direction, and are rotated in the foregoing The axial direction of the shaft is spaced apart and arranged in a plurality of sections, and the adjacent rotating shafts are rotated in the same direction, and the plurality of leaf discs are radially outward. The side view is a wedge shape in which the width becomes narrower toward the front in the direction of rotation.

According to this configuration, the plurality of rotating shafts of the drying device are rotated in the same direction with respect to the adjacent rotating shafts, thereby preventing clogging due to the workpiece to be processed when rotating in the opposite direction.

Further, by forming the blade disc provided on the rotating shaft from the radially outer side, the wedge shape which becomes wider toward the front in the rotation direction becomes wider, thereby raising the collision between the workpiece and the leaf disc and moving on the leaf disc The contact efficiency is so that the drying efficiency can be improved.

In the above-described drying device, the leaf discs adjacent to the axial direction have opposing portions that face each other in the axial direction, and the opposing portions are provided with mutually facing the leaf discs The blade portions that are protruded from the opposing portions are disposed on the blade portions of the blade discs adjacent to each other in the axial direction, and may be disposed in the same phase in the circumferential direction.

According to this configuration, since the blade portions are disposed to face each other, it is possible to reduce the situation in which the workpiece is not blocked by the blade portion and is ran away.

In the above-described drying device, the leaf discs adjacent to the axial direction are arranged such that the phases of the rotation shafts are shifted from each other in the circumferential direction.

In this configuration, it is possible to suppress the moving speed of the workpiece in the transport direction as compared with the case where the leaf discs adjacent to each other in the axial direction are arranged in the same phase in the circumferential direction of the rotating shaft. Thereby, the moving speed of the workpiece is increased, and the problem of insufficient drying can be prevented.

In the above drying device, the paddle portion may also be equipped with: a first paddle portion disposed at a rear end of the leaf disc in a rotational direction; and an arrangement of the first blade portion corresponding to the adjacent leaf disc, and a second paddle disposed at an intermediate portion of the leaf disc in a rotational direction The leaf is formed.

In this way, the general blade disc in which the first blade portion is disposed at the rear end in the rotational direction can be simply used by arranging the second blade portion in the opposing portion of the adjacent blade disc. The structure reduces the retention of the object to be treated.

The drying device includes: a first rotating shaft group that is an adjacent one of the rotating shafts, wherein the rotating shaft rotates in the same direction; and a second rotating shaft group that is an adjacent pair The rotation axis is the same direction, and rotates in a direction opposite to a rotation direction of the first rotation axis group, and the pair of the rotation axes of the first rotation axis group are provided in the same The leaf disc of the rotating shaft adjacent to the two rotating shaft groups; and the leaf disc of the pair of the rotating shafts of the second rotating shaft group provided on the rotating shaft adjacent to the first rotating shaft group The rotation locus of the aforementioned leaf disc viewed from the axial direction does not overlap.

According to this configuration, by increasing the number of the shafts of the rotating shaft, it is possible to increase the amount of processing of the workpiece without increasing the drying device in the vertical direction. Moreover, compared with the case where all the rotation directions of the rotating shaft are oriented in the same direction, the workpiece is not biased and filled in the casing, and the drying efficiency is lowered, and the inside of the casing can be prevented from being closed by the workpiece. Happening.

In the above drying apparatus, the rotational speeds of the adjacent rotating shafts may be different from each other.

So constructed because the leaf discs of adjacent rotating shafts are mutually The range of the superposition of the surfaces is changed, so that the surface of the leaf disc can be cleaned by the effect of rubbing each other.

In the above-described drying device, in the four rotating shafts constituting the first rotating shaft group and the second rotating shaft group, the rotational speeds of the two rotating shafts outside the arrangement direction of the rotating shaft can be set to a first rotation speed of the same rotation speed, a rotation speed of the two rotation shafts on the inner side in the arrangement direction is set to a second rotation speed of the same rotation speed, and the first rotation speed is set to the second rotation speed More than that.

According to the present invention, since the object to be processed having a high viscosity and a fast drying can be surely moved to the downstream side in the conveying direction, the amount of the processing flow can be reduced, and the object to be processed can be heated and dried smoothly.

1‧‧‧Drying device

2‧‧‧ trough

3‧‧‧Shell

4‧‧‧ Shell

5, 5a, 5b, 5c, 5d‧‧‧ rotating shaft

6‧‧‧ leaf disk

6a‧‧‧ leaves

6b‧‧‧ leaf disc

7‧‧‧ Input

8‧‧‧Export

9‧‧‧Flow opening

10‧‧‧ Opposition

11, 11a, 11b‧‧‧ paddle

13, 13a, 13b‧‧‧ first blade

12‧‧‧ Back end

14‧‧‧Intermediate

15, 15a, 15b‧‧‧ second blade

16‧‧‧ faces facing in front of the direction of rotation

17‧‧‧ faces facing in front of the direction of rotation

18‧‧‧ side

51‧‧‧First rotating shaft set

52‧‧‧Second rotating shaft set

G‧‧‧ interval

P‧‧‧Processed objects

P1‧‧‧Processed objects

O1‧‧‧ axis

Fig. 1 is a view showing the structure of a drying device according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view of the drying device according to the first embodiment of the present invention as seen from the axial direction.

Fig. 3 is a perspective view of a rotating shaft and a blade disk housed inside the drying device according to the first embodiment of the present invention.

4] is a rotation axis of a drying device according to a first embodiment of the present invention; And the top view of the leaf disc.

FIG. 5 is a view for explaining movement of an object to be processed when the rotation shaft and the blade of the drying device according to the first embodiment of the present invention are rotated in the same direction.

Fig. 6 is a cross-sectional view of the drying device according to the second embodiment of the present invention as seen from the axial direction.

FIG. 7 is a view for explaining the filling movement of the workpiece in the drying device according to the second embodiment of the present invention.

Fig. 8 is a cross-sectional view of the drying apparatus according to a fourth embodiment of the present invention as seen from the axial direction.

Fig. 9 is a perspective view of Fig. 3 corresponding to a general drying device.

Fig. 10 is a view corresponding to Fig. 5 in a general drying device.

(First embodiment)

Hereinafter, a drying apparatus according to a first embodiment of the present invention will be described with reference to the drawings.

Fig. 1 shows a schematic structure of a drying device 1 of the same embodiment.

Here, the drying device 1 of the embodiment is wastes of various raw materials, sewage sludge, factory drainage sludge, food waste, kitchen waste, urine sludge, livestock waste, and plant juice residue. A device for heating and drying (reducing the water content) while stirring and transporting the object P.

The drying device 1 of the present embodiment is as shown in FIGS. 1 and 2 The housing 3 is provided with a container having a trough 2 having a substantially U-shaped cross section, a casing 4 which is a heating casing 3 (or a workpiece P), and a rotating shaft 5 which is a casing. The front side S1 of the front-rear direction T (the upstream side of the conveyance direction of the workpiece P) is provided inside the rear side S3 (downstream side), and is rotated about the axis O1 by a rotation driving device such as a motor; The plurality of blade discs 6 are connected to the rotating shaft 5 at their inner peripheral ends, and protrude in the radial direction toward the center of the axis O1 of the rotating shaft 5 to form a substantially fan shape extending in the circumferential direction.

The casing 3 includes an inlet port 7 on the front side S1, a discharge port 8 on the rear side S3, and a front side S1 disposed above the rear side S3, and is inclined at a predetermined inclination angle together with the rotary shaft 5. . Further, in the drying device 1, the two rotating shafts 5 are arranged in parallel inside the casing 3. The two rotating shafts 5 are arranged to be rotatable in opposite directions and rotatable in the same direction.

As shown in FIGS. 1 to 3, the blade disc 6 is disposed at the same position in the direction of the axis O1 of each of the rotary shafts 5, and is disposed at a predetermined interval (flow opening) in the circumferential direction of the center of the axis O1. The blade disc 6 has a plurality of blade discs 6 disposed at the same position in the direction of the axis O1 as one segment, and a plurality of segments are provided at a predetermined interval from the front side S1 to the rear side S3 in the direction of the axis O1. At this time, the predetermined gap formed between the two leaf discs 6 in each of the segments is a flow path opening 9 that allows the workpiece P to flow from the front side S1 of the casing 3 toward the rear side S3. In addition, the rotating shaft 5 and the blade disk 6 are formed into a hollow shape, and the workpiece P which can be heated and brought into contact with the heating fluid such as steam, heat medium oil or warm water can be heated and brought into contact with each other.

Among the two rotating shafts 5, the blade disc 6a provided on one of the rotating shafts 5a and the vane 6b provided in the other rotating shaft 5b are alternately arranged with a predetermined gap therebetween in the direction of the axis O1. The leaf disc 6a provided on one of the rotating shafts 5a and the leaf disc 6b provided on the other rotating shaft 5b are arranged in the radial direction when viewed from the direction of the axis O1 when the rotating shafts 5a and 5b are rotated. The way is configured. In other words, the blade disc 6a provided on one of the rotating shafts 5a is provided between the blade discs 6b provided in each of the other rotating shafts 5b, and is provided on the other rotating shaft 5b. The leaf disc 6b is also provided to pass between the leaf discs 6a of the respective stages of the one rotating shaft 5a.

Among the two rotating shafts 5, one of the rotating shafts 5a rotates in a direction in which the upper portion thereof moves toward the other rotating shaft 5b side. Further, the other rotating shaft 5b has its upper portion rotated in a direction away from the one rotating shaft 5a. That is, the two rotating shafts 5 rotate in the same direction as viewed in the direction of the axis O1.

The blade disc 6a provided on one of the rotating shafts 5a and the leaf disc 6b provided on the other rotating shaft 5b have a wedge shape which is formed to be narrower toward the front in the direction of rotation as viewed from the outside in the radial direction.

Further, the leaf discs 6 adjacent to each other in the direction of the axis O1 have opposing portions 10 which face each other in the direction of the axis O1 on the side surface 18 which is formed as an inclined surface of the wedge shape. Further, the leaf discs 6 adjacent to each other in the direction of the axis O1 are arranged to be shifted in phase with each other in the circumferential direction of the rotating shaft 5. More specifically, the blade discs 6 of the segments adjacent in the direction of the axis O1 are configured to be staggered in the circumferential direction, and are arranged at intervals in the direction of the axis O1. One paragraph becomes the same phase.

The blade disc 6 has a paddle portion 11 that protrudes toward both sides in the direction of the axis O1. The paddle portion 11 is provided with a first paddle portion 13 and a second paddle portion 15 which are disposed at positions different in the rotational direction. As shown in FIG. 2 and FIG. 3, the blade disk 6a provided in one of the rotating shafts 5a includes a paddle portion 11 including a first blade portion 13a and a second blade portion 15a. The blade disc 6b of the other rotating shaft 5b is provided with the blade part 11, and is equipped with the 1st blade part 13b and the 2nd blade part 15b.

The first blade portion 13 and the second blade portion 15 are provided on the respective sides which are formed to protrude on both sides in the direction of the axis O1, and have faces 16 and 17 facing forward in the rotational direction. The first blade portion 13 and the second blade portion 15 form a workpiece that can be caught between the leaf discs 6 adjacent to the square line of the axis O1 by the faces 16 and 17 facing forward in the rotational direction. P.

4 is a view in which the rotating shaft 5 and the blade disc 6 are partially expanded in the axial direction. In FIG. 4, the left-right direction of the paper surface is the circumferential direction of the rotating shaft 5, and the downward direction of the paper is the direction of the axis O1 of the rotating shaft 5. Further, the direction of rotation in which the rotary shaft 5 rotates is indicated by an arrow in FIG.

As shown in FIG. 4, the plurality of blade discs 6 are formed to extend in the circumferential direction, and the front and rear portions in the rotational direction are provided with opposing portions 10 opposed to the leaf discs 6 adjacent to the axis O1. Further, the plurality of blade discs 6 are provided with blade portions 11 at the rear ends of the opposing portions 10, respectively. More specifically, the rear end portion 12 in the rotation direction of the blade disc 6 includes the first blade portion 13 , and the intermediate portion 14 that is located forward of the first blade portion 13 in the rotational direction includes the second pad portion 15 . . The second paddle portion 15 is corresponding to the adjacent leaf disc 6 The configuration of one paddle portion 13 is configured.

The first paddle portion 13 and the second paddle portion 15 are formed to protrude toward the opposing portion 10 of the blade disc 6 adjacent in the direction of the axis O1. Further, the second blade portion 15 is disposed in the same phase so as to face each other with respect to the end portions of the first paddle portions 13 of the blade disc 6 adjacent to each other in the direction of the axis O1.

Next, a heating and drying method of the workpiece P by the above-described drying apparatus 1 of the needle will be described with reference to Figs. 3 and 5 . In addition, in FIGS. 3 and 5, the object to be processed indicated by the symbol "P" is supplied to the casing 3 in a liquid state, and is heated on the upstream side to lower the water content (50% to 60%). It is a clay-like and very high-viscosity sludge.

First, in order to rotate the rotating shaft 5a and the rotating shaft 5b in the same direction, the workpiece P (not shown in FIG. 3) existing in the chute 2 is passed by the adjacent leaf disc 6a of the rotating shaft 5a. The blade portions 11a (the first blade portion 13a and the second blade portion 15a) of the blade disc 6a are pulled up in the upper direction in the rotational direction. Then, the workpiece P is left between the adjacent blade discs 6a in a state of a large block. Further, the workpiece P moves toward the rotation shaft 5b around the rotation shaft 5a.

On the other hand, the leaf disc 6b passes between the adjacent leaf discs 6a from the bottom to the top by the rotation of the rotating shaft 5b. Therefore, each blade portion 11b of the blade disc 6b and the blade disc 6b

(the first blade portion 13b and the second blade portion 15b) collide with the workpiece P between the adjacent blade discs 6a while being cut. Thus, by leaf disc 6b and the first paddle portion 13b and the second paddle portion 15b are pulled upward to pick up the workpiece P remaining between the adjacent blade discs 6a. Thereby, the workpiece P is detached from the periphery of the rotating shaft 5, and moves around the rotating shaft 5b in accordance with the rotation of the rotating shaft 5b. At this time, the object P to be picked up enters between the blade disc 6b by the inclination of the casing 3 and the blade disc 6b adjacent to the downstream side in the conveyance direction.

The workpiece P that has entered between the adjacent leaf discs 6b is moved rearward relative to the respective leaf discs 6b in the rotational direction while sufficiently contacting the side surface 18 of the leaf disc 6b. Then, the workpiece P is squeezed from both sides of the axis O1 by the blade portion 11b (the first blade portion 13b and the second blade portion 15b) of the blade disc 6b disposed on the rear side in the rotational direction. The pressure is moved around the rotating shaft 5b as the rotating shaft 5b rotates.

At this time, the workpiece P is integrated with the workpiece P remaining between the rotating shaft 5b and the chute 2. The blade portion 11b is further moved by the workpiece P that is retained in the rotating shaft 5b and the chute 2, and moves the workpiece P toward the rotating shaft 5a side.

Further, the blade disc 6a of the rotating shaft 5a is moved between the blade discs 6b adjacent to each other through the rotating shaft 5b from the top to the bottom by the rotation of the rotating shaft 5a, and the blade portion 11b is moved to the side of the rotating shaft 5a. The workpiece P, that is, the workpiece P existing between the adjacent leaf discs 6b, is agitated by the leaf disc 6a of the rotating shaft 5a. More specifically, the workpiece P existing between the blade discs 6b is pressed by the blade disc 6a from the top to the bottom and is pressed between the rotary shaft 5a and the chute 2. At this time, the workpiece P is moved to the leaf disc 6a of the workpiece P by the inclination of the outer casing 3. On the downstream side, it enters between adjacent leaf discs 6a. In addition, the workpiece P that has entered the adjacent leaf discs 6a is moved in the same manner as the above-described movement, and is formed to be conveyed to the downstream side while being heated by the outer casing 3 and the rotating shafts 5a and 5b. That is, the workpiece P is alternately rotated around the circumference of the rotating shaft 5a and around the rotating shaft 5b, and the moving trajectory seen from the direction of the axis O1 thereof is formed in a shape indicated by an arrow in FIG.

According to the above-described embodiment, in the adjacent rotating shafts 5a and 5b, when the workpiece P having a very high viscosity is wound around the rotating shaft 5a due to the viscosity thereof, the rotating shaft 5b can be moved upward in the circumferential direction by the rotation of the rotating shaft 5b. The blade disk 6b and the blade portion 11b scrape the workpiece P that is moved downward in the circumferential direction by the rotation of the rotating shaft 5a. In addition, when the object to be processed P which has been scraped is dropped to the downstream side while rotating along the rotating shaft 5b and moved to the side of the rotating shaft 5a, the stirring can be performed by the blade disc 6a provided on the rotating shaft 5a.

At this time, the blade disc 6b provided on the rotating shaft 5b is formed in a wedge shape which is narrower toward the front in the rotation direction as viewed from the outside in the radial direction, so that the workpiece P is swallowed to the leaf disc 6b and the material. The contact efficiency between the grooves 2 is increased, so that the drying efficiency can be improved.

As a result, the workpiece P scraped from the rotating shaft 5a falls on the downstream side, and the clogging due to the lag of the movement of the workpiece P can be more reliably prevented.

Further, each of the blade portions 11 projecting toward the opposing portions 10 of the opposing portions 10 of the blade discs 6 adjacent to each other in the direction of the axis O1 is disposed on the adjacent leaf discs 6 The object to be treated P gives a large resistance force to prevent the conveyance failure, while maintaining the contact efficiency while not The operation of the workpiece P is stopped.

Further, the leaf discs 6 adjacent in the axial direction are arranged to be phase-shifted with each other in the circumferential direction of the rotary shaft 5, and the leaf discs 6 adjacent to each other in the direction of the axis O1 are on the rotating shaft 5 The moving speed of the workpiece P in the transport direction can be suppressed as compared with the case where the circumferential direction is arranged in the same phase. In other words, since the flow path opening 9 is not disposed in the same phase in the axial direction, the moving speed of the workpiece P is slow, and the drying speed is increased to prevent insufficient drying.

Further, since the blade portions 11 are disposed to face each other, it is possible to further reduce the situation in which the workpiece P is not caught in the blade portion 11 and is ran away.

In addition, the blade pad 6 in which the first paddle portion 13 is disposed at the rear end in the rotational direction can be used by additionally arranging the second paddle portion 15 in the opposing portion 10 of the adjacent blade disc 6 The simple configuration reduces the retention of the workpiece P.

Further, the plurality of rotating shafts 5a and 5b of the drying device 1 are rotated in the same direction with the adjacent rotating shafts 5a and 5b, thereby preventing clogging due to the workpiece P generated when rotating in the opposite direction. .

(Second embodiment)

Hereinafter, a drying apparatus according to a second embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the differences from the above-described first embodiment will be mainly described, and the description of the same portions will be omitted.

The drying device 1 of the first embodiment has two rotations The shaft 5 will be described as an example, but the number of the rotating shafts 5 is not limited to two, and three or more may be used.

As shown in Fig. 6, the drying device 1B of the present embodiment includes four rotating shafts 5a, 5b, 5c, and 5d.

Of the four rotating shafts 5, the two rotating shafts 5a and 5b on one side of the arrangement direction A of the rotating shaft 5 (hereinafter, simply referred to as the arrangement direction A) are rotated in the same direction as viewed from the direction of the axis O1. . Further, the two rotating shafts 5a and 5b are rotated in the direction in which they move toward the center side in the width direction (arrangement direction A) of the casing 3. In other words, the two rotating shafts 5a and 5b are rotated clockwise as viewed from the downstream side in the conveying direction of the workpiece P. Hereinafter, the rotating shaft 5a and the rotating shaft 5b will be referred to as a first rotating shaft group 51.

Of the four rotation shafts 5, the two rotation shafts 5c and 5d on the other side in the arrangement direction A of the rotation shaft 5 are rotated in the same direction as viewed in the direction of the axis O1. Further, the two rotating shafts 5c and 5d rotate in the direction in which they move toward the center side in the wide direction (arrangement direction A) of the casing 3. In other words, the two rotating shafts 5c and 5d rotate in the counterclockwise direction opposite to the rotation direction of the first rotating shaft group 51 as viewed from the downstream side in the conveying direction of the workpiece P. Hereinafter, the rotating shafts 5c and 5d will be referred to as a second rotating shaft group 52.

In other words, of the four rotating shafts 5, the two rotating shafts 5a and 5b on one side in the arrangement direction A and the two rotating shafts 5c and 5d on the other side in the arrangement direction A are rotated in the opposite directions. . Two rotation axes 5a and 5b on one side of the arrangement direction A and another direction in the arrangement direction A The two rotating shafts 5c and 5d on one side are rotated in a direction in which the upper portions thereof approach each other.

The blade disc 6a provided on the rotating shaft 5a of the first rotating shaft group 51 and the blade disc 6b provided on the rotating shaft 5b are arranged such that the diameter is viewed from the direction of the axis O1 when the rotating shafts 5a and 5b are rotated respectively. The directions overlap.

Similarly, the blade disc 6c provided on the rotating shaft 5c of the second rotating shaft group 52 and the blade disc 6d provided on the rotating shaft 5d are arranged to be viewed from the direction of the axis O1 when the rotating shafts 5c, 5d are each rotated. Overlap in the radial direction.

On the other hand, among the four rotating shafts 5, the leaf discs 6b and 6c of the two rotating shafts 5b and 5c provided near the center of the arrangement direction A are arranged such that when the rotating shafts 5b and 5c are rotated, respectively The direction of the axis O1 does not overlap in the radial direction. That is, a predetermined interval G is provided between the rotational locus of the leaf disc 6b and the rotational locus of the leaf disc 6c.

That is, among the pair of rotating shafts 5a, 5b of the first rotating shaft group 51, the leaf disc 6b of the rotating shaft 5b adjacent to the second rotating shaft group 52; and one of the second rotating shaft groups 52 Among the pair of rotating shafts 5c and 5d, the blade disk 6c provided on the rotating shaft 5c adjacent to the first rotating shaft group 51 does not overlap the rotation locus of the blade 6 viewed from the direction of the axis O1. In other words, the blade disc 6b is disposed so as not to pass between the blade discs 6c provided in the respective segments of the rotating shaft 5c, and the leaf disc 6c is also disposed so as not to pass through the segments provided in the respective segments of the rotating shaft 5b. Between the trays 6b.

According to the above embodiment, by increasing the number of the shafts of the rotating shaft 5, the amount of processing of the workpiece can be increased without increasing the drying device 1B in the vertical direction.

Further, compared with the case where the rotation directions of the rotary shaft 5 are all in the same direction, the workpiece is not biased and filled in the casing 3, and the drying efficiency is lowered, and the object to be treated can be prevented from being blocked. The condition inside the casing 3. According to the above embodiment, as shown in Fig. 7, the workpiece P is filled on the side wall side of the casing 3 in an average manner, and the drying efficiency can be improved.

(Third embodiment)

The structure of the drying device of the present embodiment is the same as that of the drying device 1 of the first embodiment, and therefore will be described with reference to Fig. 2 . The drying device of the present embodiment is characterized in that the rotational speed of one of the rotating shafts 5a is different from the rotational speed of the other rotating shaft 5b. Specifically, the rotational speed is made worse, and the rotational speed of the rotating shaft 5a is equal to or higher than the rotational speed of the rotating shaft 5b.

According to the above embodiment, the difference in the rotational speeds of the adjacent rotating shafts 5 causes the overlapping range of the surfaces of the leaf discs 6 of the adjacent rotating shafts 5 to be changed, so that the effect of the honing can be achieved. Clean the surface of the leaf disc. In particular, by increasing the rotational speed of the side on which the workpiece is deposited, the drying efficiency of the workpiece can be improved. In other words, by increasing the rotational speed of the rotating shaft 5a, the feeding speed of the workpiece toward the rotating shaft 5b side is increased, and the stirring force can be increased.

(Fourth embodiment)

As shown in Fig. 8, the drying device of the present embodiment is provided in four rotating shafts 5 constituting the first rotating shaft group 51 and the second rotating shaft group 52. The rotation axes of the two rotation shafts 5a and 5d outside the arrangement direction A of the rotary shaft 5 are set to the first rotation speed V1 of the same rotation speed, and the rotations of the two rotation shafts 5b and 5c inside the arrangement direction A are arranged. The second rotational speed V2 at which the speed is set to the same rotational speed sets the first rotational speed V1 to be equal to or higher than the second rotational speed V2. That is, when the rotational speeds of the rotating shafts 5a and 5d are the first rotational speed V1 and the rotational speeds of the rotating shafts 5b and 5c are the second rotational speeds V2, the equation V1 ≧ V2 is established.

In other words, the rotational speeds of the pair of rotating shafts 5a and 5b constituting the first rotating shaft group 51 are such that the rotational speed of the rotating shaft 5a close to the side wall of the casing 3 is increased to be higher than the rotational speed of the rotating shaft 5b. Similarly, the rotational speeds of the pair of rotating shafts 5c and 5d constituting the second rotating shaft group 52 are such that the rotational speed of the rotating shaft 5b closer to the side wall of the casing 3 is increased to be higher than the rotational speed of the rotating shaft 5c.

According to the above-described embodiment, as in the third embodiment, by changing the rotational speeds of the adjacent rotating shafts 5, the overlapping range of the surfaces of the leaf discs 6 of the adjacent rotating shafts 5 is changed. Therefore, the surface of the leaf disc can be cleaned by the effect of honing. In particular, by increasing the rotational speed of the side on which the workpiece is deposited, the drying efficiency of the workpiece can be improved. In other words, by increasing the rotational speed of the rotating shafts 5a and 5d, the feeding speed of the workpiece to the rotating shafts 5b and 5c is increased, and the stirring force can be increased.

Further, the invention is not limited to the configuration of the above-described embodiment, and modifications may be made without departing from the scope of the invention.

For example, in the above embodiment, the first blade is oriented in the circumferential direction. The case where the portion 13 and the second paddle portion 15 are arranged in the same phase will be described, but the phase is not limited to the same phase. For example, as long as it is within the range of the opposing portion 10, it may be disposed at a position shifted in the circumferential direction.

Further, in the above-described embodiment, the case where the phases of the adjacent leaf segments 6 are shifted by 90 degrees is taken as an example, but the phase difference is not limited to 90 degrees, and for example, 45 degrees, 60 degrees, or the like is set. The right angle can be. In addition, in the above-described embodiment, the case where the plurality of disk segments 6 are provided in the direction of the axis O1 of the rotating shaft 5 and the two blade disks 6 are provided in one segment will be described. However, three or more blade disks may be provided. 6.

In addition, the case where the blade portion 11 is disposed at each rear end of the opposing portion 10 on the front side and the opposing portion 10 on the rear side will be described, but the arrangement of the blade portion 11 is not limited to the opposing portion 10. Backend.

As long as it is within the range of the opposing portion 10, it may be disposed at a position other than the rear end.

Furthermore, in the above-described embodiment, the case where the leaf discs 6 of the adjacent stages are different in phase from each of the two rotating shafts 5 will be described, but the configuration is not limited thereto. For example, in the plurality of rotating shafts 5, the invention is applied to at least one of the rotating shafts 5, and the phase of the adjacent disc segments 6 may be different from each other.

13b (11b)‧‧‧First blade (blade)

6b(6)‧‧‧ leaves

15b (11b)‧‧‧Second blade section (blade part)

15a (11a) ‧‧‧Second blade section (blade part)

18‧‧‧ side

16, 17‧‧‧ faces facing in front of the direction of rotation

14‧‧‧Intermediate

10‧‧‧ Opposition

6a(6)‧‧‧ leaves

P‧‧‧Processed objects

13a(11a)‧‧‧First blade (blade)

O1‧‧‧ axis

Claims (7)

A drying apparatus characterized by comprising: a casing having an inlet for inputting a workpiece on a front side, and a discharge port for discharging a workpiece to be heated and dried by a rear side; The front side is disposed to be inclined more than the rear side; the plurality of rotating shafts are arranged in the front-rear direction of the casing in the axial direction, and are disposed on the front side of the casing The inside of the rear side is rotatable about the axis; and a plurality of blade discs extend from the outer peripheral surface of the rotating shaft toward the radially outer side in the circumferential direction, and are disposed at intervals in the axial direction of the rotating shaft. In the plurality of stages, the adjacent rotation axes rotate in the same direction, and the plurality of leaf discs are formed in a wedge shape in which the width becomes narrower toward the front in the rotation direction as viewed from the radially outer side. The drying device according to the first aspect of the invention, wherein the leaf discs adjacent to the axial direction have opposing portions that face each other in the axial direction, and the opposing portions are provided The blade portions that are convex toward the opposing portions of the adjacent leaf discs are disposed on the blade portions of the blade discs adjacent to each other in the axial direction, and are arranged in the circumferential direction Become the same phase. The drying device according to the second aspect of the invention, wherein the leaf discs adjacent to the axial direction are arranged to be shifted in phase with each other in the circumferential direction of the rotating shaft. The drying device according to claim 3, wherein the blade portion is a first blade portion disposed at a rear end of the blade disk in a rotation direction; and the first portion corresponding to the adjacent leaf disk The arrangement of the one blade portion is formed in the second blade portion of the intermediate portion in the rotation direction of the blade disc. The drying device according to any one of claims 1 to 4, further comprising: a first rotating shaft group that is an adjacent one of the rotating shafts, wherein the rotating shaft rotates in the same direction And a second rotating shaft group which is an adjacent one of the rotating shafts, wherein the rotating shafts are in the same direction and rotate in a direction opposite to a rotation direction of the first rotating shaft group, the first rotating shaft group Among the pair of rotation shafts, the leaf disc provided on the rotation shaft adjacent to the second rotation shaft group; and the pair of rotation shafts of the second rotation shaft group are provided in the The aforementioned leaf disc of the aforementioned rotating shaft adjacent to the rotating shaft group has no overlapping of the rotational locus of the leaf disc viewed from the axial direction. The drying apparatus according to any one of claims 1 to 4, wherein the rotational speeds of the adjacent rotating shafts are different from each other. The drying device according to claim 5, wherein the four rotating shafts constituting the first rotating shaft group and the second rotating shaft group have two outer sides in the arrangement direction of the rotating shaft. The rotation speed of the rotating shaft is set to a first rotation speed of the same rotation speed, and the rotation speeds of the two rotation shafts on the inner side in the arrangement direction are set to The second rotation speed of the same rotation speed is set to be equal to or higher than the second rotation speed.