KR20030085774A - Hot Air Drying Equipment - Google Patents

Abstract

PURPOSE: A hot wind dryer is provided to maximize the drying efficiency by the direct collision of materials to be dried by the hot wind. CONSTITUTION: A rotational shaft(2) is vertically installed at the center of a cylindrical container(1). The rotational shaft is engaged with upper and lower discs. A supporting rod(5) is installed between the upper and lower discs to fix spiral wings(6). A horizontal screw conveyer(7) is formed on the spiral wings in a direction of the rotational shaft. A structure(8) falls into the space between the spiral wings and the rotational shaft. A blower introduces the hot wind into the drying container.

Description

Hot air dryer {omitted}

The present invention relates to a drying apparatus for separating water from a fluid or semi-fluid material containing water.

As the drying process is widely used in various industrial fields such as manufacturing various materials and slitting treatment in the environmental field, various drying apparatuses are used at various sites. It should be low cost, easy to install, small footprint and low installation cost.

The present invention seeks to provide a more improved method of meeting the requirements of the drying apparatus.

As a prior art of the present invention, U.S. Patent No. 5,074,057 (Dec. 14, 1992) and Korean Patent Publication No. 1993-008423 (April 21, 1999) have spiral shafts installed on the rotating shaft and the rotating shaft in a vertical direction in a container. It rotates as a means for transporting the object to the upper part, and the object transported to the upper part is dropped to the lower side by the upper discharge plate to be circulated, and thermal energy is supplied to the outer or double jacketed spiral rotating wing of the container to indirectly heat it. It is supposed to be. The drying efficiency is proportional to the heat transfer and evaporation surface area at the same amount of heat. Indirect heating does not satisfy the requirements of the drying equipment.

In addition, US Patent No. 1,760,374, which is known, has a band shape in which a ribbon-shaped spiral blade rotates in the container to agitate the dried material in the container, and removes the dried material stuck to the upper end of the spiral blade. The stirring device with the brake suspended on the lid of the container is an apparatus that stirs the dry fire in the container and circulates from bottom to top, which is not suitable to satisfy the above drying conditions.

The present invention is to provide an improvement over the prior invention by transferring heat directly to the object to increase the efficiency of thermal energy and to maximize the evaporation surface area. More specifically, the tubular rotary side is installed vertically hollow in the direction of gravity, and hot air is directly blown into the vessel at a high pressure through the lower end of the tubular rotary shaft, and the dried material transferred from the lower end to the upper end by the inner wall of the vessel is transferred. It is transported back to the upper end of the rotating shaft and is uniformly dropped in the space between the rotating shaft and the feed vane by the centrifugal force of the rotating shaft by the structure attached to the rotating shaft, and one or more fan blades are attached to the rotating shaft to drop the airflow upward. Existing dry matter is crushed and scattered to widen the contact between the falling dry matter and hot air.

The dry items that are not dried fall to the bottom and are transported to the top again, and the dried items are crushed and scattered, discharged out of the upper container by the wind, and collected through a dust collector such as a cyclone. The present invention provides a wider thermal contact and evaporation surface by directly colliding as the heating source and the building fall directly from the top to the bottom, not by indirect heating by the outer wall of the container or the hollow spiral blade, and by crushing and scattering the building. By rapidly discharging the air containing moisture to the outside to provide the means to increase the drying efficiency to achieve the purpose.

First front view of the drying apparatus

2 is a perspective view of the structure for dropping according to the embodiment of the present invention

※ Explanation of code for main part of drawing

1. Drying container 2. Hollow pipe shaft 3. Upper disc

4. Lower disc 5.Spiral wing support rod 6.Spiral wing

7. Feed Screw Conveyor 8. Falling Structure 9. Grinding Fan Wing

10. Suction Fan 11. Thrust Washer 12. Bearing

13. Hot air inlet 14. Hot air inlet 15. Hot air generator

16. Drive motor 17. Raw material feeder 18. Cyclone

In order to achieve the above object, the drying apparatus according to the configuration and means provided by the present invention includes a cylindrical container accommodating a dry object, a hollow tubular rotary shaft vertically perpendicular to the gravity direction, and an arbitrary size at the top and bottom of the vertical rotary shaft, respectively. Attach the disk horizontally and equip the disk circumference with a plurality of supporting rods between the upper and lower disks at regular intervals, and attach the spiral blade for transport in the direction of the inner wall of the container so that the object can fall between the rotating shaft and the spiral blade for transport. Means for providing a space and for transporting the lower dry matter to the upper portion; A means for conveying a dried object conveyed from the lower end to the upper end in a rotation axis direction by making a conveying screw at a speed higher than the rotational speed of the spiral blade in the rotation axis direction on the upper end of the spiral wing; Means for attaching the structure to the rotating shaft and dropping the dried object transported to the rotating shaft uniformly in the feed spiral blade and the rotating shaft space by using centrifugal force by the rotational speed of the rotating shaft; Means for attaching one or more fan vanes at any angle to an intermediate portion of the rotational shaft to push air upward and to pulverize and scatter the dried object falling in a vertical space between the rotational shaft and the feed spiral blades; Insert a fixed pipe at the lower end of the rotating shaft so that it does not come into contact with the inside of the hollow rotating shaft, or make a hot air passage assembled with the rotating shaft and the rotary joint, and make one or more holes at the lower end of the rotating shaft, Means for introducing; A suction fan is attached to the upper portion of the container, and a suction fan is attached to the dry matter dried in the particulate form, and means for forcibly discharging air containing water to guide the dust collector.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The drying apparatus according to a preferred embodiment according to the present invention has a cylindrical container 1 for receiving a dry object as shown in FIG. The drying vessel is vertically erected in a vertical direction and supported by a plurality of legs 19. The rotating shaft 2 is installed in a hollow tubular shape in the direction of the center shelf gravity of the container 1 vertically.

The hot air inlet 13 and the hot air inlet passage 14 of any size are provided at the lower end of the rotating shaft 2 to send hot air into the drying container 1.

In a preferred embodiment, the heating required for drying strongly flows the hot air generated in the hot air generator 15 through the hot air inlet passage 14 through the hot air inlet 13 at the bottom of the rotating shaft 2. do.

The dry hot wind generated by the hot wind generator 15 is generated by various methods using gas, oil, electricity, and the like to be a heating means.

In a preferred embodiment of the present invention, the hollow tubular rotary shaft (2) is a fan of any angle to increase the dry surface by forcibly pulverizing and scattering the dried object falling on the hot air inlet 13 of the lower end and forcibly falling At least one wing 9 is attached.

In the embodiment of the present invention, a structure 8 is provided on the top of the fan blade 9 of the rotary shaft 2 to drop the object to be dried.

It drops by spraying uniformly with the rotational centrifugal force throughout the space between the spiral blade 6 and the rotating shaft 2 for transporting the dried object transferred in the direction of the rotating shaft 2 from the lower end to the upper end.

The lower end of the rotating shaft (2) penetrates the lower end of the container (1) and is stored in the boss via the thrust washer (11), and the upper end penetrates the upper end of the container (1) and is accommodated in the rotating shaft fixing bearing (12) to drive smoothly. It was made.

In order to drive the rotary shaft 2 in a rotational manner, it is driven in combination with a driven gear rigidly corrected on the rotary shaft 2 by a gear driven belt or the like by a power structure (not clearly shown) using an electric motor.

In the illustrated embodiment of the present invention, the spiral blade 6 for transporting the object from the bottom to the top has a plurality of spaces between the outer periphery of the upper disc 3 and the outer periphery of the lower disc 4 attached to the rotating shaft 2. It is rigidly mounted to the support bar 5 and is driven to rotate in a state accompanied by the rotating shaft 2, the drop space is provided.

In the illustrated embodiment of the present invention, a screw conveyor 7 for transport in the direction of the rotation axis 2 is attached to the top of the spiral blade (6). The to-be-dried object transferred from the lower end to the upper end by the rotation of the spiral blade 6 is thrown into the falling structure 8 installed on the upper end of the rotating shaft 2 by the conveying screw conveyor 7 and falls. The screw conveyor 7 for feeding in the direction of the rotational shaft 2 is rigidly mounted in the container 1 so as to be faster than the rotational speed of the spiral blade 6 to rotate the scraping to quickly move the object to the rotational axis 2. .

In the embodiment of the present invention by placing the suction fan 10 above the drying container (1) to forcibly discharge the air containing the moisture and dried dry matter.

The present invention is simple in the drying apparatus using a spiral rotary blade, the heating method is simple and crushed and scattered inside the drying vessel while dropping the dried object to maximize the evaporation surface area and the dry hot wind directly collides with the dried object to maximize the drying efficiency. It can work.

The present invention includes improvements and additions to parts without departing from the intention of the present invention.

Claims (1)

In the drying process for removing moisture from the fluid-containing or semi-fluid-containing material containing water, a cylindrical tubular rotary shaft (2) disposed vertically along the direction of gravity in the cylindrical drying container (1) and the center of the container (2) ) And the disks (3,4) to the disk and horizontally to the upper and lower ends of the rotary shaft (2) and rigidly mounted support rods (5) between the upper disk (3) and lower disk (4) and spiral wings (6) ), The rotating shaft (2) and the spiral blades (6) are rotated together, so that the items are sequentially rotated from the bottom to the top, and the rotating spiral wings (6) are horizontally in the direction of the rotating shaft (2) from the inner wall of the container (1). With the conveying screw conveyor 7 above, there is a structure 8 for uniformly dropping the object to be dried by using a rotating centrifugal force in the space between the spiral blade 6 and the rotation shaft 2 above the rotating shaft, and below the structure 8. Fan blades (9) for falling dry grinding The hollow tubular rotary shaft 2 has a structure in which hot air flows into the drying vessel 1 through a hot air passage, and a suction fan 10 at the top of the drying vessel forcibly discharging dried items and wet air is attached thereto. Drying apparatus characterized in that