KR20020069112A - Dryer - Google Patents

Abstract

PURPOSE: A dryer is provided to prevent dried materials from riding over a stator even under a highly viscous semi hardened state and drawn in between stirring blades through rotation of blades of a disc and to ensure high drying efficiency by utilizing the heating surface effectively while preventing the matter to be dried from hardening/adhering to the stirring blades without causing extreme increase of power. CONSTITUTION: A dryer is composed of a hollow rotary shaft(2) passing rotatably through the shaft center part of a lateral tubular drum(1) provided with a jacket(4) on the outer circumferential surface. The hollow rotary shaft is provided continuously with a large number of hollow disc type stirring blades(3), and the matter to be dried is stirred by rotating the stirring blades while being heated with heating medium supplied to the jacket of the drum and heating medium fed through each stirring blade from the hollow rotary shaft. Stators(7) suspended between the stirring blades from the upper inner circumferential wall face of the drum are arranged zigzag in plan view in the longitudinal direction while having a phase.

Description

Drying Equipment {Dryer}

The present invention relates to a cross-cylindrical drying apparatus for drying a dry matter such as a high functional raw material and a wet raw material such as a mud state, a pellet state or powder, and the like to form a low moisture product.

Conventionally, what is shown in FIG. 21 is known as this kind of drying apparatus. In this drying apparatus, a hollow rotating shaft (2) is rotatably inserted through a cylindrical drum (1) shaft center in which a jacket (4) is provided on an outer circumferential surface thereof, and the hollow rotating shaft (2) is stirred in a hollow cone shape. A plurality of blades 3 (hereinafter referred to as disk blades) are provided in succession, and the heating medium supplied to the jacket 4 of the drum 1 and the heating medium circulated into each of the disk blades 3 from the hollow rotating shaft 2. The disk blade 3 is rotated while heating, and the to-be-dried thing is stirred and dried. According to this drying apparatus, when a dry object is input from the inlet 5 of the upper end of the drum 1, the dry matter is agitated and dried while being heated by indirect heating, and the outlet 6 of the lower end of the drum 1 is dried. Is discharged from

In this kind of drying device, since the heat medium is supplied not only to the jacket 4 of the drum 1 but also into the disc blade 3, the heat transfer area can be sufficiently secured, and the drying effect is excellent. While the stirring condition by the disk blades 3 is reduced, the stirring condition of the disk blades 3 is good, but in the state where the moisture decreases to about 60 to 70% WB, the viscous semi-solidified state becomes high, and the surface of the disk blades 3 and the like is solidified. There is a problem with attachment. When the water region is further reduced, the powder becomes a smooth powdery state. However, in the semi-solidified state, drying takes a long time and the drying efficiency is lowered. As a result, the stator 7 (interference plate) between the disk blade 3 and the disk blade 3 is conventionally used for the purpose of preventing the solidification and attachment of the object to the heat transfer surface portion of the disk blade 3 (see Fig. 19). There is also provided a drying unit equipped with). By providing the stator 7, the dry matter remaining between the disk blades 3 and 3 is peeled off.

19 is an explanatory view of a center longitudinal front view of a conventional example, and FIG. 20 is a cross-sectional explanatory view of a conventional example. As shown in these figures, the conventional disk vanes 3 are attached to the rotating shaft 2 inside the drum 1 with the same diameter and the same pitch in order to secure a large heat transfer area while miniaturizing the apparatus. Therefore, the stator 7 located between the disk blade 3 and the disk blade 3 is also arranged in parallel with the pitch of the disk blades 3 and 3 at a short pitch interval like a comb.

Moreover, the hollow rotating shaft 2 is provided with the passage 10 connected to the inside of the disk blade 3 from inside the hollow rotating shaft 2 as shown in FIG. 19, and the heat medium is this passage from the hollow rotating shaft 2; It is fed into the disk vanes 3 through 10.

However, in some types of dry matter such as sludge, the dry matter is solid and thickened, so that the dry matter rises and stays on the stator 7 arranged side by side in the shape of a comb to inhibit the movement of the dry matter or to introduce new dry matter. There is a problem that is a problem. In addition, in the state where the dry matter is raised above the stators 7 arranged side by side in a comb-like shape, heat transfer is less and stirring does not occur, so that drying is difficult to proceed and requires a lot of time for drying treatment, and the rotational resistance load of the disk blades 3 is increased. There is a problem that acts as a result of not only the power rise, but also cause the stop of the device.

The present invention has been proposed to solve the above problems, the object of which is that the object is not raised to the stator even if the viscous semi-solid state of high viscosity, and the heat transfer surface is drawn between the disk blades by the rotation of the disk blades The present invention provides a drying apparatus that can be effectively used, has a good drying efficiency, hardens and adheres a dry matter to a disk blade, and has no extreme increase in power.

1 is a longitudinal side explanatory diagram showing a first embodiment of the present invention;

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional explanatory view showing a first embodiment of the present invention;

4 is a longitudinal side explanatory view showing a modification of the first embodiment of the present invention;

5 is a sectional view showing the principal parts of another modification of the first embodiment of the present invention;

6 is a longitudinal side explanatory diagram showing a second embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along the line B-B in FIG. 6; FIG.

8 is a cross-sectional explanatory view showing a second embodiment of the present invention.

9 is a perspective view of principal parts showing a second embodiment of the present invention;

10 is a plan explanatory diagram of a guide plate illustrating the operation of the guide plate;

11 is a longitudinal side explanatory diagram showing a modification of the second embodiment of the present invention;

Fig. 12 is an explanatory view of the principal parts of another modification of the second embodiment of the present invention;

13 is a longitudinal side explanatory diagram showing a third embodiment of the present invention;

FIG. 14 is a cross-sectional view taken along the line C-C in FIG. 13; FIG.

15 is a longitudinal side explanatory diagram showing a modification of the third embodiment of the present invention;

FIG. 16 is a cross-sectional view taken along the line D-D in FIG. 15; FIG.

Fig. 17 is a cross-sectional explanatory view showing a modification of the third embodiment of the present invention.

18 is a longitudinal side explanatory diagram showing another modification of the third embodiment of the present invention;

19 is an explanatory diagram of a central longitudinal front view showing a conventional example.

20 is an explanatory diagram of a center transverse plane showing a conventional example.

21 is a partially broken front view showing a conventional example;

Explanation of symbols on the main parts of the drawings

1: drum 2: hollow shaft

3: stirring blade (disc wing) 4: jacket

7: stator 8: mounting plate

10 passageway 11: wing plate

12: guide plate 12a: inclined surface of the guide plate

13: screw conveyor 14: screw shaft

15: screw wings

In order to solve the above problems, the drying device of the present invention is a hollow rotating shaft is rotatably inserted through the shaft portion of the horizontal drum-shaped drum having a jacket on the outer peripheral surface, the hollow disk shaft stirring blade is In the drying apparatus is installed in a plurality of continuous, the drying apparatus for stirring and drying the dried object introduced into the drum by rotating the stirring blade while heating by heating the heating medium supplied to the jacket of the drum and the heating medium circulated into each stirring blade from the hollow rotating shaft, the drum The stator, which is fixed to the upper inner circumferential wall and suspended between the stirring blades and the stirring blades, is arranged in a shape in which the stator blades are alternately inserted from side to side between the stirring blades in a planar view in the drum longitudinal direction, or arranged in a phase.

Further, the drying apparatus of the present invention is characterized in that the stator is provided toward the shaft center, and furthermore, the drying apparatus of the present invention is characterized in that the stator is installed vertically from the attachment position.

In addition, in the drying apparatus of the present invention, the hollow rotating shaft is rotatably inserted through the shaft portion of the horizontal drum having a jacket on the outer circumferential surface thereof, and a plurality of stirring disks in the form of hollow disks are continuously installed on the hollow rotating shaft. In the drying apparatus for stirring and drying the dried object introduced into the drum by heating the stirring blade while heating by heating the heating medium supplied to the jacket of the drum and the heating medium circulated into each stirring blade through the hollow rotating shaft, the drying device is fixed to the inner peripheral wall of the upper drum And a stator is suspended between the stirring blade and the stirring blade, and a guide plate for guiding the dried object to the discharge port side is provided at a part or all of the stator positions when the dried object is stirred.

In addition, the drying apparatus of the present invention is characterized in that the guide plate is installed so as to be located outside the outer diameter of the stator blade of the stator, and furthermore, the drying apparatus of the present invention is stirred when the stator is viewed in plan in the longitudinal direction of the drum It is characterized in that the arrangement is arranged in the shape of being inserted alternately from side to side between the wings or in phase.

In addition, in the drying apparatus of the present invention, the hollow rotating shaft is rotatably inserted through the shaft portion of the horizontal drum having a jacket on the outer circumferential surface thereof, and a plurality of stirring disks in the form of hollow disks are continuously installed on the hollow rotating shaft. In the drying apparatus for stirring and drying the dried object put into the drum by heating the stirring blade while heating by the heating medium supplied to the jacket of the drum and the heating medium circulated into each stirring wing through the hollow rotating shaft, the drying apparatus is fixed to the inner peripheral wall of the upper drum The stator is suspended between the stirring blade and the stirring blade, and a screw conveyor is installed along the longitudinal direction of the drum at a position outside the outer diameter of the stirring blade in front of the stator.

In addition, the drying apparatus of the present invention is characterized in that the screw vanes of the screw conveyor are installed over almost the entire length of the drum or intermittently or in part.

In addition, the drying apparatus of the present invention is characterized in that the stator is arranged in the shape of being inserted alternately from side to side between stirring blades when viewed in a planar view in the longitudinal direction of the drum, or in a phased arrangement. The device is characterized in that one edge portion of the stator is a blade or a sharp edge.

In addition, in the present invention, the horizontally placed cylindrical shape of the drum includes all the cylindrical shapes that can be implemented according to the present invention, including a circular cross section and a U-shaped cross section.

Hereinafter, embodiments of the present invention will be described in detail with the drawings. 1 is a longitudinal cross-sectional explanatory view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional explanatory view taken along the line AA of FIG. 1, FIG. 3 is a cross-sectional explanatory view showing a first embodiment of the present invention. The same components as in the conventional example mentioned will be described with the same reference numerals.

In the present invention, the hollow rotating shaft (2) is rotatably inserted through the shaft portion of the horizontal drum (1) having a jacket (4) on the outer circumferential surface, the hollow disk-shaped stirring on the hollow rotating shaft (2) A plurality of vanes 3 (called disc vanes) are provided in succession and flowed into the respective disk vanes 3 from the heat medium and the hollow rotating shaft 2 supplied to the jacket 4 provided on the outer circumferential surface of the drum 1. It is performed by a drying apparatus which rotates the disk blade 3 while heating by a heat medium, and stir-drys the to-be-dryed object put into the drum 1. In FIG. 2, reference numeral 10 denotes a passage connected from the hollow rotating shaft 2 into the disk vane 3, and the heat medium is fed into the disk vane 3 from the hollow rotating shaft 2 through the passage 10.

In this embodiment, the drum 1 has a cylindrical cross section, and a hood 9 is provided on the top thereof. The hood 9 portion is provided as a passage of waste gas generated during the drying process, and the waste gas is discharged through the hood 9 portion. Although not shown in the drawing, portions of the hood 9 of the drum 1 are provided with outlets for gas discharge, and the waste gas is discharged from the outlets through the hood 9. If the waste gas is directly discharged into the atmosphere, pollution such as air pollution is generated. In this case, it is preferable to discharge the waste gas to the purifier after purifying the waste gas to the atmosphere.

The disk blades 3 which are provided in succession on the hollow rotating shaft 2 are arranged side by side at equal pitch intervals of the same diameter, thereby making it possible to secure a large heat transfer area while miniaturizing the apparatus.

A stator 7 fixed to the upper inner circumferential surface of the drum 1 is suspended between the disk blade 3 and the disk blade 3. The stator 7 prevents the solidification and adhesion of the object to the disk blade 3 heat transfer surface portion and prevents the items from returning together between the disk blades 3 and 3. In this embodiment, the hood ( 9) It is fixed by the attachment plate 8 to the inner surface of the opposing side wall of the part and suspended vertically. The stator 7 is installed alternately left and right on the inner side wall of the hood 9 portion and arranged in such a manner that the stator blades are alternately inserted left and right as shown in FIG. 3. Thus, as shown in FIG. 2, one side wall inner surface of the hood 9 is provided with one space between the disk blades 3 and the disk blades 3. It is installed between the wings (3, 3).

According to the arrangement of the stator 7, a gap is generated between the stator 7 provided on the inner side of the left side wall of the hood 9 and the stator 7 provided on the inner side of the right side wall, and the stator 7 provided in parallel on one inner side wall of the hood 9. , 7) is also enlarged. That is, the distance between the stator 7 and the stator 7 in FIG. 1 and between the stator 7 and the stator 7 in FIG. 2 is enlarged, and the space between the stators 7 and 7 is widened. .

4 is a longitudinal side explanatory diagram showing a modification of the embodiment of the first embodiment of the present invention. In this embodiment, the drum 1 is formed in a cylindrical shape having a U-shaped cross section, and the stator 7 is fixed to the left and right upper inner circumferential walls of the drum 1 to be suspended toward the hollow rotating shaft 2, and the other The part is the same as in the previous embodiment. In this embodiment, the stator 7 is inclined because it is installed so as to face the axis of the hollow rotating shaft 2.

Also, as shown in FIG. 5, a wing plate 11 for stirring and conveying is installed at the periphery of the disk blade 3 so as to smoothly stir and transfer the dried material introduced into the drum 1 so as to facilitate drying. There is a drying device. In this drying apparatus, as shown in FIG. 5, the stator 7 is provided so as not to come into contact with the wing plate 11 that rotates together with the disk blade 3.

Therefore, the dry matter put into the drum 1 is transferred to the inner circumferential surface of the drum 1 by the heat medium supplied to the jacket 4 of the drum 1 and the heat medium passed into the disc wing 3 of the disc wing 3. It heats and heats from an outer peripheral surface, and is stirred by rotation of the disk blade 3 by rotation of the hollow rotating shaft 2. Therefore, the dried object introduced into the drum 1 is stirred and dried while being heated, and is sequentially transferred by the rotation of the disk blade 3 from the inlet side of the dried object to move to the outlet side and finally discharged from the outlet.

At this time, there is a gap between the stators 7 and 7 provided on the left and right inner wall surfaces in the upper inner wall surface of the drum 1, and the gap is also expanded between the stators 7 and 7 provided in parallel on one inner wall surface. . That is, since between the stator 7 and the stator 7 in FIG. 1 and between the stator 7 and the stator 7 in FIG. 2 are enlarged, the space between the stators 7 and 7 is enlarged and widened. In addition, the dry matter is stirred and moved to a predetermined degree without rising and staying on the stator 7 even in the semi-solidified state during the drying process, and the new dry matter can be smoothly added. As a result, the phenomenon in which the disk blade 3 acts as an unnecessary rotational resistance is also reduced, and an extreme increase in power is prevented, and when the stirring and movement are performed smoothly, the stir 7 to the heat-transfer surface portion by the stator 7 Since solidification and adhesion do not occur, the heat transfer effect is also improved, the drying efficiency is improved, and the drying treatment in a short time is possible.

In addition, it is preferable to form one edge portion of the stator 7 in the shape of a blade or a sharp edge so that the dried object is cut and divided even when the dried object is semi-solidified during the drying process. In this way, a synergistic effect can be expected.

FIG. 6 is a longitudinal cross-sectional explanatory diagram showing a second embodiment of the present invention, FIG. 7 is a cross-sectional explanatory diagram of the BB line of FIG. 1, FIG. 8 is a cross-sectional explanatory diagram showing a second embodiment of the present invention, and FIG. 9 Is a perspective view of principal parts showing a second embodiment of the present invention.

The drying apparatus according to the second embodiment has a horizontal drum 1 having a jacket 4 on its outer circumferential surface, a hollow rotating shaft 2 rotatably inserted through an axial center portion of the drum 1, The hollow rotating shaft (2) is composed of a plurality of continuous disk-shaped stirring blades (called disc blades) are continuously installed, the dried material introduced into the drum (1) is a jacket (4) installed on the outer peripheral surface of the drum (1) ) Is heated through the drum (1) by the heat medium supplied to the disc, and is heated through the disc blade (3) by the heat medium flowing from the hollow rotating shaft (2) into each of the disc blades (3) and at the same time, the disc blade (3). Since the agitation is performed by the rotation of), the to-be-inserted object into the drum 1 is stirred while being heated and dried. The hollow rotating shaft 2 is provided with a passage 10 connected to the disk blade 3 from inside the hollow rotating shaft 2 as shown in FIG. 2, and the heat medium is passed through the passage 10 from the hollow rotating shaft 2. Through the disk vanes 3.

The drum 1 has a cylindrical cross section in this embodiment, and the hood 9 is integrally provided on the upper portion. The hood 9 portion is provided as a passage of waste gas generated during the drying process, and the waste gas is discharged through the hood 9 portion. Although not shown in the drawing, a portion of the drum 9 of the drum 1 is provided with an outlet for gas discharge, and the waste gas is discharged from the outlet through the hood 9. Direct discharge of the waste gas into the atmosphere generates pollution such as air pollution. In this case, it is preferable to discharge the waste gas to the purification apparatus and then discharge it to the atmosphere.

Since the disk blades 3 which are provided in succession on the hollow rotating shaft 2 are arranged side by side at equal pitch intervals of the same diameter, the heat transfer area can be secured even if the apparatus is miniaturized.

Between the disk blade 3 and the disk blade 3, the stator 7 fixed to the upper inner peripheral wall surface of the drum 1 is suspended. This stator 7 can prevent the solidification and adhesion of the object (scale) to the heat transfer surface portion of the disc blade 3, thereby preventing the return between the object disk blades 3 and 3 together. Is fixed by the attachment plate 8 to the inner side surface of the opposite side wall of the hood 9 portion, and is vertically suspended.

The stators 7 are alternately arranged left and right on the inner side surfaces of the opposite side walls of the hood 9, and are arranged in such a manner as to be alternately inserted between the stirring blades in plan view as shown in FIG. Therefore, the inner surface of one side of the hood 9 is provided with one space between the disk blade 3 and the disk blade 3 as shown in FIG. 7, and thus the left and right stators 7 are gathered. It is installed between the disk blades (3, 3).

According to the arrangement of the stator 7, a gap is generated between the stator 7 provided on the inner side of the left side wall of the hood 9 and the stator 7 provided on the inner side of the right side wall, and the length of the drum 1 on the inner side wall of one side wall. The distance is also enlarged between the stators 7 and 7 provided in parallel in the direction. That is, the distance between the stator 7 and the stator 7 in FIG. 7 and between the stator 7 and the stator 7 in FIG. 8 is enlarged, and the space between the stators 7 and 7 is widened. do.

Accordingly, the stator 7 is provided with a guide plate 12 for guiding the dry matter to the discharge port side when the dry matter is stirred as shown in FIG. 9. This guide plate 12 is inclined with respect to the rotational direction of the disc blade 3 as shown in Figs. 8, 9 and 10, and the guide plate 12 is rotated and agitated by the disc blade 3 as the object to be dried. In contact with the inclined surface (12a) of the falling toward the discharge port side is moved.

This aspect will be described with reference to FIG. 10. 10 is a plan view of the guide plate 12. When the disk blade 3 rotates in the direction of the arrow X, the object to be dried is also stirred and moved in the direction of the arrow X by the disk blade 3 so as to contact the inclined surface 12a of the guide plate 12 on the way. The dry object thus encountered is dropped in the direction of the arrow (Y) due to the inclined surface (12a). If the direction of the arrow (Z) becomes the outlet side, the object is guided to the outlet side by the guide plate 12, and even if the object is raised above the stator (7), it is forcibly moved by the inclined surface 12a of the guide plate 12. This does not happen to rise and stay on the stator (7).

Therefore, the guide plate 12 is preferably located outside the outer diameter of the disk blade (3) to be installed on the stator (7), it is preferable to be installed on the entire stator (7) but to be installed on the whole stator (7) It is not necessary, and it is also preferable to be provided in the stator 7 located rearward (right side of FIG. 6 and FIG. 8) in the rotational direction of the disk blade 3. In the drawings such an embodiment is shown.

11 is a longitudinal side explanatory diagram showing a modification of the second embodiment of the present invention. In this embodiment, the drum 1 is in the shape of a cylinder having a U-shaped cross section, and the stator 7 is fixed to the inner circumferential wall of the left and right upper sides of the drum 1, and is suspended toward the hollow rotating shaft 2, Other parts are the same as the above-mentioned embodiment, the same components are given the same reference numerals and detailed description thereof will be omitted. In this embodiment, the stator 7 is inclined so as to be installed toward the axis of the hollow rotating shaft 2.

In addition, the wing plate 11 for stirring and conveying at the outer circumferential edge of the disk blade 3 as shown in FIG. There is a drying device installed. In this drying apparatus, as shown in FIG. 12, the stator 7 and the guide plate 12 are naturally installed so as not to come into contact with the wing plate 11 that rotates together with the disk blade 3.

Thus, the dried object introduced into the drum 1 is discharged from the inner circumferential surface of the drum 1 by the heat medium supplied to the jacket 4 of the drum 1 and by the heat medium distributed into the disc wing 3. Is heated from the outer circumferential surface thereof and heated and stirred by rotation of the disk blades 3 by the rotation of the hollow rotating shaft 2. Therefore, the dried object introduced into the drum 1 is stirred and dried while being heated, and is sequentially transferred by the rotation of the disk blade 3 from the inlet side of the dried object to be moved to the outlet side, and finally discharged from the outlet.

At this time, the stator 7 prevents the solidification and adhesion of the to-be-dried object or scale to the heat transfer surface portion of the disk blade 3, and prevents the to-be-turned object from returning together.

In addition, because the stator 7 is provided with a guide plate 12, it is also forcibly moved by the inclined surface 12a of the guide plate 12 that the object to be raised is placed on the stator 7 arranged side by side in a comb shape. Climbing up the stator 7 does not occur.

Furthermore, there is a gap between the stators 7 and 7 provided on the left and right inner surfaces on the upper inner wall surface inside the drum 1, and the stators 7 and 7 provided in parallel in the longitudinal direction of the drum 1 on one inner wall surface. The gap is also enlarged. That is, between the stator 7 and the stator 7 in FIG. 7 and between the stator 7 and the stator 7 in FIG. 8 are enlarged, and the stator 7 and 7 are enlarged and opened as a whole. Therefore, even if the object to be dried in the semi-solid state during drying due to the synergistic effect with the guide plate 12, the phenomenon that rises over the stator (7) does not occur much more.

Therefore, the dry matter is smoothly stirred and moved, and new input of the dry matter can be smoothly proceeded. In addition, the phenomenon in which the disk blade 3 acts as an unnecessary rotational resistance is reduced, and thus an extreme increase in power is also prevented. Therefore, the stirring and movement of the disk blade 3 proceed smoothly, and solidification and adhesion of the dry matter to the heat transfer surface portion are not generated. The heat transfer effect is also improved, and the drying efficiency is increased, allowing the drying treatment within a short time.

In addition, since the present invention is not limited to the second embodiment, various modifications can be made without departing from the gist of the present invention. For example, the attachment plate 8 and the guide plate 12 may be integrally formed with the stator 7 or may be formed separately. In addition, the one end side edge portion of the stator 7 is formed in a blade shape or a sharp edge so as to be able to cut the object so that the object can be dug and divided by the blade or sharp edge even when the object is semi-solidified. It is desirable to.

13 is a longitudinal cross-sectional explanatory diagram showing a third embodiment of the present invention, and FIG. 14 is a cross-sectional explanatory diagram of the C-C line in FIG.

The drying apparatus according to the third embodiment includes a horizontal drum 1 having a jacket 4 on its outer circumferential surface, a hollow rotating shaft 2 rotatably inserted through the shaft center of the drum 1; , A hollow disc shaped stirring blade (3; called a disk blade) installed in succession on the hollow rotating shaft (2), and the dried object introduced into the drum (1) is a jacket provided on the outer peripheral surface of the drum ( 4) is heated through the disk 1 by the heating medium supplied to the disk blade, and heated through the disk blade 3 by the heating medium circulated from the hollow rotating shaft 2 into the respective disk blades 3, and at the same time, the disk blade ( It is stirred by the rotation of 3), and the dry matter put into the drum 1 is stirred while being heated and dried. The hollow rotating shaft 2 is provided with a passage 10 connected to the disk vane 3 inside the hollow rotating shaft 2 as in FIG. 7, and the heating medium moves the passage 10 from the inside of the hollow rotating shaft 2. Through the disk vanes 3.

The drum 1 has a cylindrical cross section in this embodiment, and the hood 9 is integrally provided on the upper portion. The hood 9 portion is provided as a passage of waste gas generated during the drying process, and the waste gas is discharged through the hood 9 portion. Although not shown in the drawing, a portion of the hood 9 of the drum 1 is provided with an outlet for discharging gas, and the waste gas is discharged from the outlet through the hood 9. Since direct discharge of waste gas into the atmosphere generates pollution such as air pollution, in this case, the waste gas is first guided to a purification device for purification and then discharged to the atmosphere.

The disk blades 3 which are provided in succession on the hollow rotating shaft 2 are arranged side by side at equal pitch intervals of the same diameter, thereby ensuring a large heat transfer area even if the apparatus is miniaturized.

Between the disk blade 3 and the disk blade 3, the stator 7 fixed to the upper inner peripheral wall surface of the drum 1 is suspended. This stator 7 prevents the solidification and adhesion of the object (scale) to the heat transfer surface portion of the disk blade 3, thereby preventing the object from returning together between the disk blades 3 and 3. In the case, the hood 9 is fixed to the inner surface of one side wall by the attachment plate 8 and suspended vertically.

Therefore, the screw conveyor 13 is rotatably installed along the longitudinal direction of the drum 1 in front of the stator 7 located outside the outer diameter of the disk blade 3. The screw conveyor 13 is composed of a screw blade 15 is installed in a spiral shape on the screw shaft 14, the screw shaft 14 is connected to a power source through a power mechanism to rotate, accordingly screw conveyor ( 13) rotate also.

This screw conveyor 13 performs the drying treatment suitably for the throughput by moving the to-be-lifted object to and from the stator 7, using the heat transfer surface effectively, or by moving it to the planned place. For example, some or all of the amount to be dried up is moved to a place where the object is not to be lifted, and moved to a planned position by the screw conveyor 13 in accordance with the throughput of the drying treatment, so as to increase the efficiency of the drying treatment.

Therefore, it is preferable that the screw vane 15 of the screw conveyor 13 is provided over the full length of the drum 1, It is also preferable to install partially, and it may be provided intermittently (intermittently). For example, when the movement of the object is required over the entire length of the drum 1, the screw vanes 15 are installed over the entire length of the drum 1. In this case, the driving speed of the screw conveyor 13 is increased and is always driven so that the dry items are discharged in an untreated state, so that the driving speed is adjusted to be driven only when necessary.

In addition, the to-be-dried object is installed only in the part which rises to the stator 7, and the to-be-dried thing is prevented from rising to the stator 7, and when moving the to-be-dried thing which has been raised in this way, it needs only to be installed in this part.

Further, the stator 7 may be moved intermittently from the portion to which the object is to be lifted, and may be intermittently installed in order to sequentially change the position in the drum 1 in response to the throughput and the dry state. .

In addition, in the case where the screw blade 15 is used as the heat transfer surface, the screw blade 15 is formed in a hollow shape, and the screw shaft 14 is also formed in a hollow shape, and from the screw shaft 14, the heat medium is inserted into the screw blade 15. It is also preferable to supply. In this way, the heat transfer area is enlarged and the drying efficiency is improved.

Thus, the dry matter introduced into the drum 1 is discharged from the inner peripheral surface of the drum 1 by the heat medium supplied to the jacket 4 of the drum 1 and by the heat medium circulated into the disc wing 3. It heats and heats from an outer peripheral surface, and is stirred by rotation of the disk blade 3 by rotation of the hollow rotating shaft 2. Therefore, the dried object introduced into the drum 1 is stirred and dried while being heated and sequentially transferred by the rotation of the disk blade 3 from the inlet side of the dried object to move to the outlet side, and finally discharged from the outlet.

At this time, the thing to be solidified or adhered to the heat transfer surface portion of the disk blade 3 due to the stator 7 is prevented, and the object to be dried is also prevented from returning.

The screw conveyor 13 is rotatably installed along the longitudinal direction of the drum 1 at a position outside the outer diameter of the disk blade 3 in front of the stator 7. By driving, it is possible to prevent the object to be raised or stayed up by moving to or from the stator 7, and to maintain the drying efficiency by effectively using the heat transfer surface or by moving it to a plan suitable for the throughput. It will be possible to improve.

Therefore, the dry matter is smoothly stirred and moved, and thus the operation of newly adding the dry matter can be performed smoothly. In addition, the disk blade 3 acts unnecessarily as a rotational resistance, thereby preventing the extreme increase in power, and furthermore, since the stirring and movement are performed smoothly, there is no solidification and adhesion of the dry matter to the heat transfer surface portion. The heat transfer effect is also good, the drying efficiency is improved, and the drying treatment can be performed for a short time.

15 is a longitudinal cross-sectional explanatory view showing a modification of the third embodiment of the present invention, FIG. 16 is a cross-sectional explanatory view of the DD line of FIG. 15, and FIG. 17 is a cross-sectional view showing a modification of the third embodiment of the present invention. It is also.

This embodiment inserts the stator 7 alternately from side to side on the inner surface of the upper opposing side of the drum 1 as shown in the figure (left and right alternately between the stir blades in plan view as shown in FIG. 17). Arranged on the inner surface of one side wall of the drum 1 as shown in FIG. 16, and spaced one by one between the disk blade 3 and the disk blade 3. The stator 7 is gathered and installed between each of the disk blades 3 and 3, and the other parts are the same as in the above embodiment, and the same components are assigned the same reference numerals, and detailed description thereof will be omitted. According to the arrangement of the stator 7, the distance between the stator 7 provided on the inner side wall of the left side of the drum 1 and the stator 7 provided on the inner side wall of the right side wall is enlarged. Since the distance between the stators 7 and 7 arranged side by side in the longitudinal direction is also enlarged, the space between the stators 7 and 7 is widened.

According to this embodiment, the distance between the stator (7, 7) is enlarged to open as a whole, so even if the object is semi-solidified during drying, less work to rise above the stator (7) and stay with the screw conveyor (13) A synergy effect can be expected.

18 is a longitudinal side explanatory view showing another modification of the third embodiment of the present invention. In this embodiment, the drum 1 has a cylindrical shape having a U-shaped cross section, and the stator 7 is fixed to the inner and outer peripheral walls of the drum 1 and is suspended to face the hollow rotating shaft 2. Since the parts are the same as in the above embodiment, the same components are denoted by the same reference numerals and detailed description thereof will be omitted. In this embodiment, the stator 7 is inclined so as to be installed toward the axis of the hollow rotating shaft 2.

In addition, since the present invention is not limited to the third embodiment, various modifications can be made without departing from the gist of the present invention. For example, one end edge portion of the stator 7 has a blade shape or a sharp edge to form a shape for cutting the object. Even when the object is semi-solidified, it can be cut and divided by a blade shape or a sharp edge. It is desirable to be able to.

As described in detail above, according to the drying apparatus of the present invention, the following effects can be obtained.

(1) The stator, which is fixed to the upper inner circumferential wall, is placed between the stir blades and the stator blades in a drum in the longitudinal direction of the stator blades, and is arranged alternately left or right between the stator blades. It is installed between the wings, and the gap between the front, rear, left, and right sides is expanded, so that dry matters such as high-function raw materials or wet raw materials do not rise and stay on the stator even when the viscous semi-solid state is high during the drying process. Attracted, stirred, and moved.

(2) The stator, which is fixed to the upper inner circumferential wall of the drum and is suspended between the stirring blade and the stirring blade, is provided with a guide plate for guiding the dried object to the outlet side during stirring of the dried object. Even if it rises up to the stator, it is forcibly moved by the inclined surface of the guide plate so that it does not stay on the stator so that it is drawn between the rotating stirring blades and smoothly stirred and moved.

(3) Since the stator is installed between the stirring blades, the space between the front, rear, left and right is enlarged and widened, and even if the dry matter becomes viscous and semi-solid state during the drying process, it does not rise and stay above the stator even more by the synergistic effect with the guide plate. It is pulled between the rotating stirring blades so that it is stirred and moved.

(4) Since the screw conveyor is installed freely along the longitudinal direction of the drum at a position outside the outer diameter of the stirring blade at the front of the stator, the semi-solid dry matter which is going to or will rise to the stator during the drying process is a screw conveyor. Since it can be moved by the retention can be prevented, it is possible to effectively use the heat transfer surface to move to the planned according to the throughput to perform the drying treatment to improve the drying efficiency.

(5) If the stator spacing is widened and opened, the synergy effect with the screw conveyor can be expected because the phenomenon of rising to the stator is less likely to occur even if the dry matter becomes viscous semi-solid state during the drying process.

(6) As the dry matter is smoothly stirred and moved, the operation of newly adding the dry matter can also be performed sequentially, and furthermore, the feed into the planned product can be carried out by a screw conveyor.

The heat transfer surface is effectively used because the to-be-dried object is drawn between the rotating stir blades without rising and staying on the stator, so that the heat transfer surface is effectively used. Moreover, the solidification and attachment of the dry object to the heat transfer surface portion are not generated by the stator. Since the dry matter does not occur together, the heat transfer effect is improved and the stirring is also good, so that the drying efficiency is improved, and the drying treatment can be performed within a short time as compared with the related art.

(8) Since the object to be dried is stirred and moved smoothly, the stirring blade is unnecessarily weighted as rotational resistance, and no extreme increase in power is generated.

(9) As the dry matter is smoothly stirred and moved, the operation of newly adding the dry matter can also be performed sequentially.

Claims (9)

The hollow rotating shaft is inserted into the shaft portion of the horizontal cylindrical drum with a jacket on the outer circumference freely inserted, and a plurality of stirring disks in the form of hollow discs are continuously installed on the hollow rotating shaft, and supplied to the jacket of the drum. In the drying apparatus for stirring and drying the dried object introduced into the drum by rotating the stirring blade while heating by the heating medium flowed into each stirring blade from the heating medium and the hollow rotating shaft, And a stator fixed to the inner circumferential wall of the upper drum and suspended between the stirring blade and the stirring blade, the stator being alternately inserted left and right between the stirring blades in plan view in the longitudinal direction of the drum, or arranged in phase. According to claim 1, And the stator is installed toward an axis. According to claim 1, And the stator is installed vertically from an attachment position. The hollow rotating shaft is inserted into the shaft center portion of the horizontal cylindrical drum with a jacket on the outer circumference freely rotatably inserted, and a plurality of stirring disks in the form of hollow discs are continuously installed on the hollow rotating shaft, and supplied to the jacket of the drum. In the drying apparatus for stirring and drying the dried object put into the drum by rotating the stirring blade while heating by the heating medium flowed into each stirring blade through the heating medium and the hollow rotating shaft, A stator is fixed between the inner peripheral wall of the drum and the stator is suspended between the stirring blade and the stirring blade, and a guide plate for guiding the dried object to the outlet side during stirring of the dried object is installed at a part or all of the stator positions. The method of claim 4, wherein The guide plate is a drying apparatus, characterized in that installed so as to be located outside the outer diameter of the stator blade of the stator. The hollow rotating shaft is inserted into the shaft portion of the horizontal cylindrical drum with a jacket on the outer circumference freely inserted, and a plurality of stirring disks in the form of hollow discs are continuously installed on the hollow rotating shaft, and supplied to the jacket of the drum. In the drying apparatus for stirring and drying the dried object put into the drum by rotating the stirring blade while heating by the heating medium flowed into each stirring blade through the heating medium and the hollow rotating shaft, A stator is attached to the inner circumferential wall of the upper drum, and the stator is suspended between the stirring blade and the stirring blade, and a screw conveyor is installed along the longitudinal direction of the drum at a position outside the outer diameter of the stirring blade in front of the stator. The method of claim 6, And the screw vanes of the screw conveyor are installed over almost the entire length of the drum or intermittently or in part. The method according to any one of claims 4, 5, or 7, The stator is a drying apparatus, characterized in that arranged in a shape or phases are alternately inserted left and right between the stirring blades when viewed in a plan view in the longitudinal direction of the drum. The method according to any one of claims 1 to 7, Drying apparatus, characterized in that the edge portion of the one end side of the stator to the blade shape or sharp edge.