Complex type dryer for high viscous materials

Patent metadata

Field	Value
Publication number	US-10234201-B2
Application number	US-201514929718-A
Country	US
Kind code	B2
Filing date	Nov 2, 2015
Priority date	Feb 26, 2015
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A complex type dryer includes a rotational cylinder, a drying material, a hot air provider, a hot air chamber and a scraping unit. The drying material provider is disposed over the rotational cylinder and coats a drying material on a surface of the rotational cylinder. The hot air provider is connected to both sides of the rotational cylinder, and includes first and second hot air tubes. The first and second hot air tubes alternately provide a hot air into the rotational cylinder or alternately exhaust the hot air passing through the rotational cylinder. The hot air chamber is disposed along an outer surface of the rotational cylinder outside of the rotational cylinder. The scraping unit is disposed at a side of the rotational cylinder, and removes the drying material from the surface of the rotational cylinder after dried by the rotational cylinder and the hot air chamber.

First claim

What is claimed is:

1. A complex type dryer comprising:
a rotational cylinder;
a drying material provider disposed over the rotational cylinder and coating a drying material on a surface of the rotational cylinder;
a hot air provider connected to both sides of the rotational cylinder, and comprising first and second hot air tubes, the first and second hot air tubes alternately providing a hot air into the rotational cylinder or alternately exhausting the hot air passing through the rotational cylinder;
a hot air chamber disposed along an outer surface of the rotational cylinder outside of the rotational cylinder, the hot air which is re-provided after passing through the rotational cylinder passing through the hot air chamber;
a scraping unit disposed at a side of the rotational cylinder, and removing the drying material from the surface of the rotational cylinder after dried by the rotational cylinder and the hot air chamber; and
a connecting part receiving the hot air passing through the rotational cylinder and re-providing the heat to the hot air chamber,
wherein the hot air is sequentially provided to the first hot air tube, the rotational cylinder, the second hot air tube, the connecting part and the hot air chamber, which is a first path, or the hot air is sequentially provided to the second hot air tube, the rotational cylinder, the first hot air tube, the connecting part and the hot air chamber, which is a second path.

2. The complex type dryer of claim 1 , wherein a first guide pin is formed inside of the rotational cylinder and guides the hot air alternately provided by the first and second hot air tubes,
wherein hot air inlets are arranged at both sides of the rotational cylinder, and the hot air provided by the first and second hot air tubes flows in through the hot air inlets.

3. The complex type dryer of claim 2 , wherein the hot air inlets are arranged in a zigzag shape along a circumference of both sides of the rotational cylinder connected to the first and second hot air tubes.

4. The complex type dryer of claim 1 , wherein the drying material provider comprises a slit and a nozzle part,
wherein the slit is disposed at an end portion of the drying material provider and the drying material flows out through the slit,
wherein the nozzle part is fixed to at a side of the slit and coats the drying material to be a film on the surface of the rotational cylinder,
wherein the nozzle part has a sector shape cross-section and an end portion of the nozzle part is spaced apart from the surface of the rotational cylinder by a predetermined distance.

5. The complex type dryer of claim 4 , wherein the nozzle part comprises a heating part disposed inside of the nozzle part and providing a heat to the nozzle part.

6. The complex type dryer of claim 5 , wherein the heating part is a heating plate or a heating line.

7. The complex type dryer of claim 5 , wherein an insulating part is formed at both sides of the nozzle part to prevent the heat from dissipating to outside.

8. The complex type dryer of claim 1 , further comprising a path controller controlling the hot air path to provide the hot air alternately along the first and second paths.

9. The complex type dryer of claim 1 , wherein the hot air is provided only to the hot air chamber without passing through the rotational cylinder, which is a third path, or the hot air is sequentially provided to the first hot air tube, the rotational cylinder and the second hot air tube, which is a fourth path.

10. The complex type dryer of claim 1 , wherein the hot air chamber comprises an inlet portion through which the hot air flows in, an outlet portion through which the hot air flows out, and a body portion between the inlet and outlet portions and through which the hot air passes,
wherein the body portion covers between a half and three quarters of the outer surface of the rotational cylinder.

11. The complex type dryer of claim 10 , wherein the hot air chamber further comprises a porous block disposed at the inlet portion to increase uniformity of the hot air flowing in the hot air chamber.

12. The complex type dryer of claim 1 , wherein the scraping unit comprises:
a scraper removing the drying material; and
a fixing part fixing the scraper which is detachable.

13. The complex type dryer of claim 12 , wherein the scraping unit is disposed between the drying material provider and an end portion of the hot air chamber,
wherein the fixing part applies a force to the scraper to stick the scraper fast to the rotational cylinder.

14. The complex type dryer of claim 1 , further comprising a cover unit covering the side of the rotational cylinder and a side of the hot air chamber at the same time to enclose a space between the rotational cylinder and the hot air chamber.

15. The complex type dryer of claim 1 , wherein the rotational cylinder further comprises an enclosing part fixing to a side surface of the rotational cylinder and making contact with a cover unit, to enclose a space between the rotational cylinder and the cover unit.

16. The complex type dryer of claim 15 , wherein the enclosing part comprises a bearing inducing the rotational cylinder to rotate with respect to the cover unit.

Assignees

• Korea Inst Energy Res

Inventors

• Kim Sung-Il
• Choi Jong-Won
• Oh Sang-Hyun
• Lee Kye-Jong

Classifications

• F26B21/50

  Ducting arrangements from the source of air or other gases to the materials or objects being dried · CPC title

• F26B17/286

  Arrangements for application of materials to be dried onto the drums or rollers; Arrangements for removing dried materials from the drums or rollers, e.g. doctor blades · CPC title

• F26B17/284

  the materials being dried on the non-perforated surface of heated rollers or drums (arrangements for heating or cooling drums, for removal of condensate F26B13/183) · CPC title

• F26B2200/18

  Sludges, e.g. sewage, waste, industrial processes, cooling towers · CPC title

• F26B3/20

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