KR200223783Y1 - Double disc rotation type drier - Google Patents

Abstract

The present invention relates to a double disk rotary dryer designed to efficiently dry by dividing the section from the inlet to the outlet of the drying unit in the main body into several sections and varying the transport speed in each section.

The present invention includes first and second rotary shafts 4 and 5 installed to face each other in the main body, drive motors 7 and 8 for rotating the first and second rotary shafts, and the first and second rotary shafts. A plurality of first and second disks 9 and 10 installed at a plurality of intervals at regular intervals on each other to form the incisions 14 at 180 degree positions, and to form inclined surfaces 15 at predetermined angles on one side of the incisions; In the double disk rotary dryer composed of steam supply means for supplying steam into the first and second disks, the section from the inlet (2) to the outlet (3) is divided into the initial, middle and end dry section, On the basis of the conveying speed of the first and second disks 9 and 10 installed in the intermediate drying section, the first and second disks 9 and 10 of the initial drying section form a slow conveying speed. The first and second disks 9 and 10 of the drying section are conveyed at It is formed by forming quickly.

Description

Double Disc Tumble Dryer {DOUBLE DISC ROTATION TYPE DRIER}

The present invention relates to a double disk rotary dryer, and more particularly, the drying from the inlet to the outlet of the drying unit in the main body is divided into several sections, the transfer speed in each section is different and the drying is more efficient by increasing the intermixing. It is related with the double disk rotary dryer which consists of.

Double disc rotary dryers developed and commercialized in the past have been known to maximize working efficiency by increasing the contact area between the disc and the object by installing discs intersecting each other on two rotary shafts.

The structure of this dryer is provided with two rotary shafts arranged side by side on the horizontal line inside the main body of the dryer, and a plurality of disks are intersected on each rotary shaft, and each disk has a cutout portion of 180 degrees facing the rotary shaft. It is divided into two parts. In addition, one side of the cutout is formed as an inclined surface so that the object to be transferred from the inlet to the outlet through the incision by the rotation of the disk.

By the way, in the conventional dryer, since the size of the cutouts of all the disks installed on the rotating shaft are the same and the angle of the inclined surface is set to be the same, the transfer speed from the inlet to the outlet to the outlet is constant over the entire section.

Therefore, the drying speed of the building is narrow, but the width of the disc incision is narrow, so that the transport speed of the building is small or the angle of the inclined plane is set to be slow, so that the time for the building to stay in the main body is longer. It may be excessively dried and carbonized before reaching the vicinity.

On the contrary, even when the drying speed of the dry matter is slow, the dry matter stays in the main body when the transport speed of the dry matter is fast because the width of the disc cutout is wide or the angle of the inclined plane is set high. Since the time is shortened, there is a problem that the discharge is not enough dry.

Therefore, in view of such a problem, there was a difficulty in properly designing and manufacturing the width of the cutout of the disc and the angle of the inclined surface.

The present invention has been made in view of this point, and the object thereof is to rotate the disk installed on the rotating shaft to transfer the dry matter in the main body from the inlet to the outlet. It can be achieved by a double-disc rotary dryer capable of performing the most appropriate drying by dividing the intermediate dry section and the late dry section, and setting the transport rate of the dried object in each section differently.

Another object of the present invention is to provide a double-disc rotary dryer capable of forming a turbulent flow in the dry material transported in the main body to prevent agglomeration in the drying process and allowing the dry matter to be uniformly mixed to perform uniform drying. have.

Another object of the present invention is to change the rotational speed of the disk installed on one rotational shaft and the rotational speed of the disk installed on the other rotational axis so that the shear force on the disk surface is generated during transport of the construction, so that the object is attached to the disk surface. It is to provide a double disk rotary dryer which prevents the increase and increases the heat transfer efficiency.

1 is a cross-sectional view showing a dryer of the present invention.

FIG. 2 is a cross-sectional view of the plane of FIG. 1.

3 is an enlarged cross-sectional view taken along the line A-A of FIG.

Figure 4 is a perspective view of the first and second disks according to the present invention, (a) is a perspective view of a state in which the inclined surface is formed in the opposite direction, (b) is a perspective view of a state in which the inclined surface is formed in the same direction.

Figure 5 (a) is an enlarged cross-sectional view taken along the line B-B of FIG.

5B is an enlarged cross-sectional view taken along the line C-C in FIG.

6A to 6C are diagrams showing the width of the disc cutout in each section.

7A to 7C are diagrams showing angles of the inclined plane of the disk in each section.

<Explanation of symbols for main parts of the drawings>

1: main body 2: object to be inserted

3: dry matter discharge port 4,5: rotating shaft

7,8: drive motor 9,10: disc

14: incision 15: inclined surface

16: inclined plate 17: screw

The present invention for achieving the above object is, the main body having a built-in opening and discharge port, the first and second rotary shafts installed to rotate in the main body and the drive motor for rotating the first and second rotary shafts and A plurality of first and second disks disposed on the first and second rotational shafts at a predetermined interval to form a cutout portion at a 180 degree position, and forming an inclined surface at a predetermined angle on one side of the cutout portion; In the double disk rotary dryer comprising a steam supply means for supplying steam into the second disk, the section from the inlet to the outlet is divided into an initial dry section, a medium dry section and a late dry section, and installed in the medium dry section. Based on the feed rates of the first and second discs, the first and second discs of the initial drying section slow the feed rate. Sex, and first and second end discs of the dryer section can be achieved by a double-disc rotary dryer which is characterized by rapidly configure the feed rate.

At this time, the width of the cutouts formed in the first and second disks of the initial drying section is narrowly formed on the basis of the widths of the cutouts formed in the first and second disks of the medium dry section, and the first and the first dry section of the dry section. It is preferable to form a wide width of the second disc cutout.

Further, on the basis of the angles of the inclined surfaces formed on the first and second disks of the medium dry section, the angles of the inclined surfaces formed on the first and second disks of the initial dry section are formed small, and the first and the first dry sections It is preferable to form the angle of the inclined surface formed in the 2nd disk large.

Hereinafter, the double disk rotary dryer of the present invention will be described in detail according to the accompanying drawings.

1 to 3 show a double disk rotary dryer of the present invention, an inlet 2 for injecting a dry object into the main body 1 is formed at an upper portion of the dryer main body 1, and the inlet 2 On the opposite lower side of the) is formed a discharge port (3) for discharging the dried object to the outside.

In addition, in the main body 1, the first and second rotary shafts 4 and 5 are installed side by side in the horizontal direction, and both ends are freely supported by the bearing 6 from the outside of the main body 1, respectively. The first and second rotary shafts 4, 5 are rotatably driven by the first and second drive motors 7, 8 provided respectively.

In addition, a plurality of first and second disks 9 and 10 for moving the object from the inlet 2 to the outlet 3 are fixed to the first and second rotation shafts 4 and 5 at regular intervals. As shown in FIG. 3, the first and second rotary shafts 4 and 5 have a hollow hollow shape, and a condensate discharge pipe 11 is installed therein.

Therefore, when steam is supplied into the first and second rotary shafts 4 and 5, the steam flows into the first and second disks 9 and 10 through the vapor passage holes 12, and thus the first and second disks. The temperature of the first and second disks 9 and 10 is increased because the temperature of the 9 and 10 is increased, and the dry matter contacts the surfaces of the first and second disks 9 and 10 in the process of being transferred. It is delivered to and dried to evaporate the moisture. At this time, the condensate generated in the first and second discs 9 and 10 by dissipating heat from the first and second discs 9 and 10 is discharged to the condensate discharge pipe 11 through the discharge pipe 13. .

As shown in Figs. 2 and 3, the first and second disks 9 and 10 are partially offset so as to overlap each other, and the incisions 14 are formed in portions facing 180 degrees. One side of the portion 14 is an inclined surface 15 (see FIGS. 4 and 5). Therefore, when the first and second disks 9 and 10 are rotated, the object to be transported along the inclined surface 15 is transported through the cutout 14.

At this time, the inside of the main body (1) from the inlet (2) to the outlet (3), the initial part of the dry section (a), the middle part of the middle section (b), the end of the end dry section (c) ), And the feed rate in each section a to c is set differently.

The transport speed of the object in each of the sections a to c can be set differently by narrowing or widening the width of the cutouts 14 formed in the first and second disks 9 and 10. That is, on the basis of the width B1 of the cutout portion 14 of the first and second disks 9 and 10 in the medium dry section b, as shown in FIGS. The width B2 of the incision 14 of the first and second disks 9 and 10 in the initial drying section (a) is narrow and the first and second disks 9 in the final drying section (c). The width B3 of the cutout portion 14 of, 10 is made large so that the feed rate of the dried object is reduced in the initial dry section a, and the feed rate is increased in the late dry section c.

In addition, by varying the angle of the inclined surface 15 on one side of the cut-out portion 14 of the first and second disks 9 and 10, it is possible to set the transport speed of the dry objects in the sections a to c differently. That is, based on the angle θ1 of the inclined surface 15 of the first and second disks 9 and 10 in the medium dry section b as shown in FIGS. The angle θ2 of the inclined surface 15 of the first and second disks 9 and 10 in the drying section a is made small, and the first and second disks 9 and 10 in the final drying section c. The inclined surface 15 angle (θ3) of) is increased so that the initial drying section (a) delays the transfer of the dried object and reduces the feeding speed. In the late drying section (c), the feeding speed is smoothed and the feeding speed is increased. .

By doing so, the transport speed of the dry items is slowed in the initial dry section (a), so that water vaporization is active, and in the late dry section (c), the transport speed of the dry items is increased and quickly discharged to prevent carbonization due to excessive drying. Can be.

In addition, the inclined surfaces 15 of all the first disks 9 and the inclined surfaces 15 of the second disk 10 in the initial drying section a are opposite to each other, as shown in FIG. Form to be. In this way, in the initial drying section (a), the inclined surface 15 is to be transferred in the traveling direction by the first disk 9 inclined in the direction of travel of the object, and the inclined surface 15 is the dry object. Since the second disk 10 formed in the opposite direction of the movement is resisted in the traveling direction, turbulence is generated in the flow of the dried object between the first and second disks 9 and 10, and the turbulence It works by evenly mixing the dry matter, which helps to dry uniformly and quickly.

The inclined surfaces 15 of the first and second disks 9 and 10 in the medium-term dry section b, for example, the inclined surfaces 15 of the first disk 9 are all formed in the advancing direction of the object to be dried. The inclined surface 15 of the second disk 10 is repeatedly formed by jumping one by one in the traveling direction and the opposite direction of travel. In this way, where the inclined surfaces 15 of the first and second disks 9 and 10 are formed in the same traveling direction, the inclined surfaces 15 are transferred in the normal flow, and the inclined surfaces 15 of the first and second disks 9 and 10 are provided. Where these are formed in opposite directions, they are transported in a turbulent flow.

The inclined surfaces 15 of the first and second disks 9 and 10 in the terminal drying section c are all formed in the traveling direction of the same dry object as shown in Fig. 4B. Therefore, in the final dry section (c) is quickly discharged by the rapid transport of the dry matter.

In addition, as shown in FIGS. 5A and 5B, the inclined surfaces 15 of the first and second disks 9 and 10 are separately manufactured on the first and second disks 9 and 10. The inclined plate 16 is detachably installed with the screw 17. According to such a structure, when changing the drying conditions according to the kind of to-be-built, it can be easily changed, operating the to-be-dried speed in each section a-c.

The first and second rotary shafts 4 and 5 are rotated by the respective drive motors 7 and 8, and the first and second rotary shafts 4 and 5 are rotated at different speeds. ) And the rotational speed of the second rotary shaft 5 are set differently.

In this case, since the rotational speeds of the first disk 9 of the first rotating shaft 4 and the second disk 10 of the second rotating shaft 5 are different, the surface of the first disk 9 and the second disk are different. The shear force is generated between the surfaces of (10) to prevent the adhered objects from adhering to the surfaces of the first and second disks 9 and 10, thereby increasing the heat transfer effect.

Until now, the present embodiment has been described as divided into three sections by dividing the sections a to c from the inlet 2 to the outlet 3 into three sections. However, the present disclosure is not limited thereto, and the lengths of the sections may be changed differently. In addition, by dividing the number of sections or less or more, it is possible to set the transport rate of the dry matter in each section to the optimum state while adjusting at the production site.

As described above, according to the double-disc rotary dryer according to the present invention, the section formed from the inlet to the outlet to the outlet is divided into an initial dry section, a medium dry section, and a final dry section, and moisture evaporation is active in the initial dry section. Since the temperature rise of the building is small, the feeding speed is slowed down to increase the drying speed sufficiently. In the final drying section, the drying speed is increased so that the dried items can be discharged quickly. can do.

In addition, by forming the inclined surfaces of the first disk and the second disk in the opposite direction to form turbulent flow in the flow of the object to be evenly mixed with the dry object to achieve uniform drying, the first and second disk By varying the rotational speeds of the first and second rotary shafts, the shear forces on the first and second disk surfaces are generated during transport of the dried object, thereby preventing the dried matter from adhering to the surface of the disk, thereby increasing the heat transfer effect.

Claims (6)

A main body 1 having a to-be-inserted object 2 and a discharge port 3, first and second rotary shafts 4 and 5 installed so as to face each other in the main body 1, and the first and second rotary shafts. A plurality of drive motors 7 and 8 for rotating (4, 5) and a plurality of driving motors 7 and 8 are disposed on the first and second rotational shafts 4 and 5 at regular intervals, and a cutout portion 14 is formed at a 180 degree position. And supplying steam into the first and second disks 9 and 10 and the first and second disks 9 and 10 forming the inclined surface 15 at a predetermined angle on one side of the cutout 14. In the double disk rotary dryer comprising a steam supply means for The section from the inlet (2) to the outlet (3) is divided into an initial dry section (a), a medium dry section (b) and the end dry section (c), the first and the first installed in the medium dry section (b) The first and second disks 9 and 10 of the initial drying section (a) form a slower conveying speed on the basis of the dry conveyance speed of the two disks 9 and 10, and the final drying section (c) Double disc rotary dryer, characterized in that the first and second discs (9,10) form a high feed rate. The method of claim 1, wherein the first part of the initial drying section (a) is based on the width B1 of the cutout portions 14 formed in the first and second disks 9 and 10 of the medium drying section (b). The width B2 of the cutouts 14 formed in the first and second disks 9 and 10 is narrowly formed, and the cutouts 14 of the first and second disks 9 and 10 of the terminal drying section c are narrowed. Double disc rotary dryer, characterized in that to form a wide width (B3). The first drying section (a) according to claim 1, wherein the first drying section (a) is formed on the basis of the angle (θ1) of the inclined surface 15 formed on the first and second disks (9, 10) of the medium drying section (b). And the angle θ2 of the inclined surface 15 formed on the second disks 9 and 10 is made small, and the inclined surface 15 formed on the first and second disks 9 and 10 of the final drying section c is formed. Double disc rotary dryer characterized by forming a large angle (θ3). The inclined surface 15 of the first disk 9 and the inclined surface 15 of the second disk 10 in the initial drying section a are formed in opposite directions, and the intermediate dry section All of the inclined surfaces 15 of the first disk 9 in b) are formed in the traveling direction of the object, and the inclined surfaces 15 of the second disk 10 are repeatedly formed one after the other in the traveling direction and the opposite direction of the traveling. And the inclined surface (15) of the first disk (9) and the inclined surface (15) of the second disk (10) in the final drying section (c) are both formed in the direction to be dried. The inclined surface 15 of the first and second disks 9 and 10 is configured by detachably fixing the inclined plate 16, which is separately manufactured, with screws 17. Double disc tumble dryer. The double disc rotary dryer according to any one of claims 1 to 4, characterized in that the rotational speeds of the first rotary shaft (4) and the second rotary shaft (5) are set differently.