US1372585A - Drying apparatus - Google Patents

Description

Z. YAIVIAVUTU.

DRYING APPARATUS,

APPLICATION FILED Nov, 28. 191s.

1,372,51385.V Patented Mar.- 22, 1921.

Z. YAMAMOTO.

DRYING APPARATUS.-

APPLlcATloN FILED Nov.28,1919.

1,372,585 x Patented Mar. 22, 1921.

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3 www/Con NuNrrsD STATES PATENT OFFICE ZENKICHI YAMAMOTO, OF TOKYO, JAPAN.

DRYING APPARATUS.

To all 'LU/wm t may concern) i Be it known that I, Zimmern YAMAMOTO, a subject of theEmperor of Japan, residing at No. l Mitoshiro-cho Nichome, Kanda,

. Tok o Ja an have invented certain new and 7 7 useful Improvements in Dry'ng Apparatus, of which the following is a specification. u

This invention relates to `improvements in drying apparatus for various materials of granular form, such as corn, wheat, or other granular food` materials, as well sand, volcanic ash powder or other chemical or mineral powders.` `The invention has for its object to provide a uniform heating means of comparatively simple construe# u tion,iwhich will rapidly heat theI material undergoing treatment without permitting direct contact or intermixmg of the heatinggases and said material.

With the foregoing object outlined, `the invention consists in the novel featuresdescribed in connection `with the accompanying drawings, and more particularly pointed out in the claims.

Referring to the drawings Figure l is a longitudinal sectional view of my apparatus, a half of the section being taken on line AB in Fig. 2 and the other half being taken on line CD in Fig. 2; Fig. 2 is a transverse sectional view taken on line EF in Fig. 1.

In the drawings, 1 is a stationary casing or heating chamber; 2 are conveying `receptacles for the material to be dried, and

are arranged in two parallel flights, each of which is composed of a series of rectangular cross-sectioned boxes or dryingtrunks arranged in zig-zag form and connected together end to end.

Each of the receptacles is provided with mouth pieces 3 serving as inlet openings for hot air from the interior of the casing 1 and exhaust openings for moist air from the interior of the receptacles. These mouth pieces 3 are fitted with wire net in their outer ends so that material `to be treated can not be discharged through the same. 4 is a reciprocating supporting frame which carries the receptacles or drying trunks 2, and the reciprocating frame is supported by the casing 1 through the medium of the shaft 5.

VThe shaft is fiXe'd to the supporting frame y Specification of Letters Patent. Patented B131'. 22, 1921; u Application med November 2s,` 191e.. serial 110.341,315.` t

tothe reciprocating or vibrating movement for a suitable period. V6 representschargair within the easing l; i l These conduits are composed of tubes ar` ranged between the two iiights of receptacles 2, and the tubes are connected at their upper ends to a discharge funnel. 9 are bai'ie plates to deflect the hot gas at the bottom part of the drying chamber, to heat'the bottom of the heating chamber.

"In the working of the above described apparatus, the shaft 5 is movedreciprocally by a convenient means so that the receptacles 2 are vibrated. Hot gas from an outside furnaceis supplied to the bottom part of the drying chamber to heat the air around the "drying trunks and at the same time material to be treated is Vcharged into the successive series of drying trunks down- `wardly and is heated gradually. As the drying trunks are vibrated, air inside thereof which is moistened by the steam coming from the material treated, is discharged from the mouth pieces at one side of the drying trunks, while dry hot air is admitted to the trunks through the mouth pieces at the other side, thus there being an exchange of moist and dry hot air in the drying trunk, so that the material will be dried very rapidly.

` As the frame 4c reciprocates it will act as a pump or function as a piston for causing circulation of air through the trunks.

Thus according to this invention, the receptacles or drying trunks are arranged in two batteries within a iiXed casing, and gas from a furnace is deected at the lower part of the heating chamber to heat the base of the heating chamber l. This gas then passes to the conduits arranged between the two rows of receptacles so that the combustion impurities such as smoke, etc. are prevented from directly contacting with the material under treatment. B this construction a more uniform heating is obtained. Moreover, by means of the mouth pieces 3, moist air inside the receptacle is discharged from one side while hot air is introduced from the other side so that there is always comparatively dry air inside the receptacles, whereby the drying speed oi the material to be treated is greatly increased. A

drying trunk, the said mouth pieces serving as dischargingrmeans for moist air as well as inlets for dry hot air from and to the receptacle. f

2. A rdrying apparatus comprising an inclosing casing, a movable frame mounted in said easing and carrying a zigzag chute having an inlet at its top Vand an outlet at its'bottom,'means for heating the interior of said casing, andopenmgs 1n said chute to permit heated air within the easing to enter said chute. Y

' 8. A drying apparatus comprising a heating chamber, a reciprocating frame mounted in said chamber and supporting a zig-zag Y chute, means for heating the interior of said chambery. and openings provided in the chute for permitting heated air from the ing air within the casing, and openings provided in said chute for admitting heated air to the interior of the same when the reciprocable frame is moved in one direction and for discharging moist air from said chutes when the reeiprocable frame is moved in the opposite direction.

5. An apparatus of the kind deined by claim 4c, having a chamber at its lower portion provided with baiiies forming a zig- Zag passage for heated air, means connecting said passage with the passage which extends through said casing, and means for admitting heated air to said Zig-zag passave.

In testimony whereof I affix my signature in the presence of two witnesses.

ZENKICHI YAMAMOTO. [Ls] IVitnesses C. ARCILLAS, T. KANENCH.

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