Hybrid drying apparatus for high or medium viscosity materials

Patent metadata

Field	Value
Publication number	US-10415880-B2
Application number	US-201715705392-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	May 19, 2017
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A hybrid drying apparatus including: a bed portion having a horizontally disposed top surface; an object-to-be-dried supplying portion configured to spread an object to be dried on the top surface of the bed portion; and a driving unit configured to rotate and drive the bed portion or the object-to-be-dried supplying portion, wherein the object to be dried supplied from the object-to-be-dried supplying portion is spread on the top surface of the bed portion while the bed portion or the object-to-be-dried supplying portion is rotated, and the top surface of the bed portion is heated in such a manner that a lower portion of the bed portion is primarily heated so that the bed portion is used to dry the object to be dried coated on the top surface of the bed portion by the object-to-be-dried supplying portion.

First claim

What is claimed is:

1. A hybrid drying apparatus comprising:
a bed portion having a horizontally disposed top surface;
an object-to-be-dried supplying portion configured to spread an object to be dried on the top surface of the bed portion;
a driving unit configured to rotate the bed portion or the object-to-be-dried supplying portion, wherein the object to be dried supplied from the object-to-be-dried supplying portion is spread on the top surface of the bed portion while the bed portion or the object-to-be-dried supplying portion is rotated by the driving unit;
a scraping unit disposed on the bed portion and configured to remove the object to be dried when the object to be dried is dried on the top surface of the bed portion from the top surface of the bed portion;
a lower jacket configured to cover a bottom surface of the bed portion and form a space portion for a flow of hot air between the bottom surface of the bed portion and the lower jacket and having a first inlet through which the hot air is introduced into the space portion and a first outlet through which the hot air is discharged to an outside of the space portion; and
an upper cover portion configured to cover a section of the top surface which is coated with the object to be dried and form an upper space for the hot air on the top surface of the bed portion, the upper cover portion having a second inlet through which the hot air is introduced into the upper space and a second outlet through which a discharge gas generated from the object to be dried coated on the top surface during drying is discharged, wherein the second inlet is connected to the first outlet,
wherein the hot air introduced into the space portion of the lower jacket heats the bottom surface of the bed portion to transfer heat to the object to be dried on the top surface on the bed portion without the contacting the object to be dried, and then the hot air discharged from the space portion of the lower jacket through the first outlet is introduced into the upper space of the upper cover portion through the second inlet and heat directly the object to be dried on the top surface of the bed portion.

2. The hybrid drying apparatus of claim 1 , wherein the bed portion has a circular plate shape.

3. The hybrid drying apparatus of claim 2 , wherein the bed portion is coupled to a rotation shaft provided in a center thereof, and the rotation shaft is rotatably connected to the driving unit.

4. The hybrid drying apparatus of claim 1 , wherein a fin portion is disposed inside the lower jacket and comprises a plurality of heat transfer fins that extend to the bottom surface of the bed portion.

5. The hybrid drying apparatus of claim 3 , wherein the rotation shaft extends to a lower side of the bed portion, and the first inlet is formed as a hollow portion that surrounds the rotation shaft, extends to a lower side of the lower jacket, and extends to the bottom surface of the bed portion in the space portion, and the first outlet is formed as an outer hollow portion that is disposed at the lower side of the low jacket, surrounds the hollow portion, and extends downwards.

6. The hybrid drying apparatus of claim 1 , wherein the object-to-be-dried supplying portion extends from a central portion of the top surface of the bed portion toward edges of the upper surface to provide the object to be dried to the top surface of the bed portion.

7. The hybrid drying apparatus of claim 6 , wherein the object-to-be-dried supplying portion extends from the central portion of the top surface of the bed portion toward the edges of the top surface and comprises a slit through which the object to be dried is discharged.

8. The hybrid drying apparatus of claim 6 , wherein the object-to-be-dried supplying portion increases a quantity of the object to be dried supplied from the object-to-be-dried supplying portion nearer an outside of the bed portion from the central portion thereof.

9. The hybrid drying apparatus of claim 1 , wherein the scraping unit is disposed on the top surface of the bed portion and extends from a central portion of the top surface toward edges thereof.

10. The hybrid drying apparatus of claim 9 , wherein the scraping unit contacts the top surface of the bed portion, contacts the object to be dried on the top surface of the bed portion as the bed portion is rotated, removes the object to be dried from the top surface of the bed portion, and guides the object to be dried to be moved to an outside of the bed portion.

11. A hybrid drying apparatus comprising:
a bed portion having a horizontally disposed top surface;
an object-to-be-dried supplying portion configured to spread an object to be dried on the top surface of the bed portion; and
a driving unit configured to rotate the bed portion, wherein the bed portion is coupled to a rotation shaft provided in a center thereof, and the rotation shaft is rotatably connected to the driving unit; and
a lower jacket configured to cover a bottom surface of the bed portion and form a space portion for a flow of hot air between the bottom surface of the bed portion and the lower jacket and comprising a first inlet through which the hot air is introduced into the space portion and a first outlet through which the hot air is discharged to an outside of the space portion, wherein the bed portion is used to dry the object to be dried spread on the top surface of the bed portion via heat supplied to the bed portion due to the hot air introduced into the lower jacket,
wherein the object to be dried supplied from the object-to-be-dried supplying portion is spread on the top surface of the bed portion while the bed portion is rotated;
wherein the top surface of the bed portion is heated in such a manner that a lower portion of the bed portion is heated to transfer heat to the top surface of the bed portion, such that the object to be dried spread on the top surface of the bed portion can be dried, and
wherein the rotation shaft extends to a lower side of the bed portion, and the first inlet is formed as a hollow portion that surrounds the rotation shaft, extends to a lower side of the lower jacket, and extends to the bottom surface of the bed portion in the space portion, and the first outlet is formed as an outer hollow portion that is disposed at the lower side of the low jacket, surrounds the hollow portion, and extends downwards.

12. The hybrid drying apparatus of claim 11 , wherein the object-to-be-dried supplying portion extends from the central portion of the top surface of the bed portion toward the edges of the top surface and comprises a slit through which the object to be dried is spread on the top surface of the bed portion, and
wherein the slit includes a nozzle portion for allowing the object to be dried to be discharged on the top surface of the bed portion and a blocking layer disposed facing the nozzle portion to prevent leakage of the object to be dried discharged in other directions than a direction in which the nozzle portion is disposed.

13. The hybrid drying apparatus of claim 11 , further comprising an upper cover portion that covers a section of the bed portion which is coated with the object to be dried, and the upper cover portion forms an upper space on the top surface of the bed portion, wherein a second outlet is provided in the upper cover portion to discharge a discharge gas generated from the object to be dried coated on the top surface of the bed portion, and
wherein the hot air introduced into the space portion of the lower jacket heats the bottom surface of the bed portion to transfer heat to the object to be dried on the top surface on the bed portion without the conta

Assignees

• Korea Inst Energy Res

Inventors

• Kim Sung Il
• Oh Sang Hyun
• Park Ki Ho

Classifications

• F26B11/08

  rotating about a vertical or steeply-inclined axis · CPC title

• F26B11/026

  Arrangements for charging or discharging the materials to be dried, e.g. discharging by reversing drum rotation, using spiral-type inserts · CPC title

• F26B3/20

  the heat source being a heated surface {, e.g. a moving belt or conveyor}(F26B3/22 takes precedence) · CPC title

• F26B1/00 Primary

  Preliminary treatment of solid materials or objects to facilitate drying {, e.g. mixing or backmixing the materials to be dried with predominantly dry solids (F26B5/005 takes precedence)} · CPC title

• F26B3/04

  the gas or vapour circulating over or surrounding the materials or objects to be dried (F26B3/14 takes precedence) · CPC title