US1517897A - Drying apparatus - Google Patents

Description

Dec. 2, 1924. A 1,517,897

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fir @2 0 fizz 2 013295 2 J. FARASEY DRYING APPARATUS Filed Feb. 20, 1922 ZSheets-Sheet 2 M M W I Patented 1' 2, 19124.

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JAMES raaasnr, or catamaran nnren'rs, onro.

name arram'rus.

hpplication filed February 20, 1922. Serial No. 587,788.

To all whom it may concern:

Be it known that I, JAMES FARASEY, a citizen ofthe United States, residing at Cleveland Heights, in'the countyof Guyahoga and State of Ohio, have invented a certain new and useful Improvement in a of'which the following exact description, reference being had to the accompanying drawings. I

This invention relates to driers of the general type which includes an inclined heated rotary drum provided with lifting flanges therein and havingheat-conducting flues by means of whichthe hot gases are brought into contact with the material as Drying A-pparatus,

, it advances.

' Consequently, after a drier for some time,

through which the hot from the furnace cham In driers of the type described, it is ens-- tomary to provide suitable hood members er to the interior In constructions heretofore hoods have been directly secured-to the inside of the heating drum. The drums are made of rolled plate and as the flow of hot gases is concentrated on this plate-adjacent the opening to the hood, the plate about the hoods after some time, becomes fire cracked and in such condition that the efliciency of the drier is impaired. has been used of the drum. employed, the

it becomes necessary to en away the corroded portion of the plate and patch the drum adjacent: the point of attachment of the hood.

I have found that by providing a cast iron flanged collar for connecting the hood to the drum arranged so that the flan covers the exterior of the drum adjacent t e aperture, that the difliculty mentioned above is overcome. The 11 surrounds ing to the hood and thus protects the plate come unfit for further use,

'il removed and anoth as is the casein the and be' made of cast iron withstands the action 0 the fire'better than rolled plate. The life of the drier isthus' greatly increased and moreover should the flanged collarbeit can be reader collar without the necessity of patching the plate, present construction.-

means w ereby the drum of a drier adjacent the outlets to the hoods is protected from eneral deterioration.

hood, or elbow for use 1 Fig. 2; Fig. 4 is ases are conducted- "nace' chamber 12 the open-- the apertures 14, the

substitutedv ob gect of the invention is to provide timeto provide fire cracking, and

' Another 0 ject o my invention is to pro vide i pr ved connection with heating drums so construct-. ed that the hood may be readily replaced should any of its parts become damaged.

' A further object of my invention is to provide an improved connecting means. for attaching a heat-conducting hood to a drier arranged so that the hood may be readily replaced if necessary be protected "at its point of connection with the hood.

Further and other objects of the invention will be apparent from the following description taken in connection with the accompanyin drawings wherein while the drum will Fig. 1 is a central sectional view of a drier showing my invention applied thereto; Fig. 2 is an.

elevation of .the hood embodying my invention; Fig. 3 is a section on the line 3-3,

a section throughthe drier showing my improved hoods in elevation and Fig. g is a section on the line 5-5,

fieferrinlghto the drawings by reference numerals, ave shown at 10 a drying drum of the type with which my invention is adapted to be used. This drum may be mounted to rotate on suitable rollers; the rotation being efiected in any well known manner. a The drum is indicated asmounted above a furnace 11 provided with a furhaving apertures 14 in its t. upper wall through which the heated prodter of the present ap lication are each shown as com rising an chow-shaped portion 21 which ares at its end as indicated at 22. The flared end is provided with a lurality of outwardly extending lugs 23 w ich are rovided with suitable apertures theret rough. To prevent material being dried from entering the'hood, and at the same an outlet for the I provide a cover member 25 therefor. This c ver member is shown as pro (led on its in;

the hot gases whic terior with lugs 26 which align with the projections 23 on the hood. Suitable bolts 27 serve to removably hold the covers on the hoods. The path of the heated gases from the hood 20 to the interior of the heating drum is indicated by arrows in Fig. 5.

The other end of the hood 20 is indicated as provided with an enlargement as at 28 and is rabbeted as at 29 to removably receive a collar 34 therein. This collar 34 is provided with a flange 35 which is shown as secured to the drum 10 by suitable'rivets 33. The hood the collar 34 by suitable bolts 30 as shown.

The flanged collar 34 being made of cast iron, or cast steel rotects the plate 10 from flow into the drum. In former constructions wherein a flange integral with the hood was secured upon the illterior of the drum, the plate 10 adjacent the opening to the hood was unprotected and soon became damaged.

My invention overcomes the difliculty mentioned and also allows a hood or flange collar to be very easily replaced if necessary with a minimum of time and expense. It

Will therefore be apparent that my invention lengthens the life of driers and allows re pairs to be quickly and easily effected.

I claim 1. In combination, a drying drum having an opening in the wall thereof, a hood, and means to connect said hood to the drum, said means comprising a collar detachably secured to the hood, said collar through said opening in the drum and havmg a flange thereon which is secured to the exterior or the drum.

2. The combination with a furnace of a drying drum having an aperture therein through which products of combustion from v the furnace may pass into the interior of the drum, a hood within the drum, and means to connect said hood to the drum, said means including a member which surrounds the aperture in the drum on the exterior of the drum to protect the latter from the destructive effects of the hot gases.

3. A drying cylinder having an inlet for material at one end and an outlet for material at the other end, and having an open-. mg through the side of said cylinder, an annular metal ring surrounding said opening on the exterior of the drum, an internal heat conduit secured to said ring, and a furnace so arranged that the hot gases strike the exterior of-the drum.

4. The combination with a furnace, of a drying drum having an aperture through its wall through which hot gases may pass from the furnace into the interior of the drum, and a casting which surrounds the aperture in the drum on the exterior thereof and projects into the interior to protect the drum from the eorroding effects of the hot may be removablysecured to projecting.

a sleeve extending gases, and a heat conduit within the drum in registration with said aperture.

5. A drying cylinder having an inlet for material and an outlet for material, and having an opening through the side of said cylinder, a cast ring surrounding said opening and secured to the exterior of the cylinder and having a sleeve extending into the interior, and a heat conduit I'GIHOVtlbl secured to said sleeve Within the cylinder.

6. A drying cylinder having an inlet for material at one end and an outlet for material at the other end and an opening through the side of said cylinder, a flanged sleeve extending through said opening, and having its flange, portion secured to the exterior of the cylinder, and a hood within the cylinder secured to said sleeve.

7. The combination with a furnace, of a drying cylinder having an inlet for material at one end and an outlet for material at the other end and openings through the side of said cylinder for admission of hot gases from the furnace, flanged sleeves having their flanges secured on the exterior of the cylinder around the openings and their sleeve portions extending through said openings, and hoods removably secured to said sleeves within the cylinder.

8. In a drying furnace, the combination of a drying container having an aperture therein, and a flanged cast iron collar inserted in said aperture, the flange of said collar being secured to the exterior of said container about the aperture and the sleeve portion of the collar extending intothe interior of the container, and a conduit within the container overlapping the sleeve part of said collar, and bolts passing through the overlapped portions of the collar and conduit.

9. In a drying furnace, the combination of a drying container having an aperture therein, and a flanged cast collar inserted in said aperture, the flange. of said collar being secured to the exterior of said container about the aperture, the collar having through theaperture, and a conduit removably secured to said sleeve, said, conduit and sleeve overlapping and one of them being rabbeted at its end to provide a shoulder against which the other abuts.

10. In a drying furnace, a drying container having an aperture therein, a cylindrical collar inserted in said aperture and having a flange secured to said container, a conduit secured to the cylindrical portion of the collar, the conduit being rabbeted adjacent its engaged end to receive the collar, said .conduit being substantially l.-shaped and having a cover plate removably secured upon its other end.

11. The combination with a furnace, of a drying drum having an aperture therein through which products of combustion from the furnace may pass into the interior of the drum, a hood within the drum adapted to receive and direct 'such products. of combustion, and an annular protecting member on the exterior said aperture.

12. The combination with a furnace, of a metal drum having an aperture therein through which products of combustion from the furnace may pass, a hood within the drum in registration with the aperture, and a cast iron ring on the exterior of the drum surrounding the aperture and protecting it from the destructive effects of the hot gases.

13. The combination with a furnace, of a rotary drying drum above it against which the hot products of combustion impinge, said drum having a number of apertures through its wall through which such hot products may pass into the interior of the of the drum surrounding heat conduits within the drum registering with said apertures.

14. The combination with a furnace, of a drying cylinder in proximity thereto, having an inlet'and an outlet for material, and openings through the side of said cylinder for admission of hot gases from the furnace, cylindrically curved rings on the exterior of the cylinder, riveted to 't and extending around the openings, and hoods secured within the cylinder in registration with said openings, respectively.

In. testimony whereof, I hereunto .aflix my signature.

JAMES FABASEY.

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