US1469294A - Drier - Google Patents

Description

Oct. 2, 1923. 1,469,294

A. c. DAMAN DRIER Filed J 26. v 2 Sheets-Sheet 1 [NVE/VTUR Arron/vs) Oct. 2,1923. 1,469,294

' A. C. DAMAN DRIER Fiied June 26. 1922 2 Sheets-Sheet 2 Patented Get. 2, 1923.

warren I tieazaa ARTHUR o. DAMAN, on DENVE ,potoneno, .l

Application jfilea nine 26. le aa. Serial No. 570522.

ToaZZ whom/it may Eon-came Be it known that I; Aizrrrna (lfDaQimri, citizen of the United. States of. America,

residing at Denver; in the county oflDenver and State of Colorado, have invented certain. new and useful improvements in Briers, of.

which the following is a specification.

This invention relates to 'dr 'ers' I of, the

revolving drum t pe and has for its principal obje ct the prhuision of a device of this character in which. materials of 'a sticl y, viscous nature will be prevented. from adhere ing to the inside of the drum;

v Another object of theinvention is to pro drier, which result in simplicitypeeonomy and efficiency, and which will become .more apparent from the following description;

Inthe following detailedfdescription of the invention reference is had to the -ac companying drawings which form apart hereof. Like numeralsrefer to like parts in all views of the drawings and throughout the description. 7 4 7 in the drawing;

lig l is a side elevation of the improved drier, partly broken away to show the interior construction thereof;

Fig. 2 is a vertical section taken on'the line 2-42, Fig. 1.

Fig. 3 is a similar section taken through the furnace on the line 3-3, Fig. 1.

Fig. 4f is a horizontal section through the furnace taken on the line e-fFig. 3.

Fig. 5 isa similar section taken on the line 5-5, Fig. 3. a

Let the numeral designate a cylinder or drum which serves as the drier. proper. Drum 10 is slightly inclined toward its rearward or discharge end and is of the proper diameter and length to suit the capacity required. -Drum is surrounded by wo bearing rings 11 and 12 which ride on supporting rolls 13 and 14L respectively. A

tion to the drum 10... j V

counter shaft 17 which turn is diiiven'by means :Qfga, belt pulley'IS, or i'n -a'ny desired.-

manner-j I M a T, c I 1 The higherextremity of drum- 101s open; to the interior of a furna ce l9, gthe lower extremity opcningiinto' a housing 20. An

exhaust fan 21 is supportedonthe'jh'ousing 20 and discharges intoa stack 22. g i

llfounted above the furnace 19 and opening into the drum: 1() is a' feeder23 provided with ,a feed'hopper 24. IA shaft 25 carrying a helical scraper 26 extends throughout the entire drum 10 intothe feeder 23. Shaft 25 is clriven by ,means of a chainQT from the countershaft 17L zon'ta-lly adjustable bearings 28. The bear rings 28 are so adj'usted as tobring the pea ripheryofthe scraper/26010543 against the inner 'wallofithe drum 10, as shown in Fig. 2. Scraper .Zfirotates' inthe opposite dire'c-- The furnace l9consists of an outer; surround111g wall'29 supporting an arch 30' "lifhaftfloand feeder 23 v are slid-ably mounted. by means. of hengear also surrounds-the drum lO anfd; mesheswithiafldrrve p1n1on-l6 carried on a which completelycloses the top of the fur-fi nacec The drum 10 o-pens to the furnace:

1 9. at the high point belo'w arch 30.. Containedwithin the furnace is a fire box, '31; consisting iof two side walls 32 and back wall 33.1" Back wall 33 extends entirely across the furnace 19. Walls 32 and 33 are spaced Tawayfrom, the outer walls 29 thereby formingairipassageways 34 at each, side of the fire box 31' and ajcombustion and settling chamber 35 at the rear thereof. wanes s2 amiss are stopped below thefarch 30.

Fire box 31 is provided with the usual grates36and an ash pan bottom 37.

Openings 41am left in the lo wenportion of the walls 32 and allow communication between the space below the ash pan bottom 37 and the passage-ways 34c.

Suitable doors and dampers are arranged in the outer walls 29 communicating with the space below the ash pan bottom, the ash pan and the fire box respectively numbered 38', 39, and 4:0.

The operation of the furnace is as follows: The fire is carried on the grates 36, air for the proper .combustionfthereof being admitted through the'door'anddamper 39. Additional air is admitted through the door and damper 38 into the space below the ash pan passing from thence out the openings 41 and up the passageways 3e over the entirelength of the walls 32, into the com bustion space under the arch 3O thence into the drum 10, with the combustion-- gases of. the fire, and, through the fan 21, up the stack 22. V s j 1 The advantages of this system of admit-c ting the air are many and it is one of "the principal features of the invention. 1 It allows a large volume of heatedair' to be drawn through thedrum 10 without it being necessary/to pass all o'fthe air through the fire bed and cause too rapid combustion. The

' rising column of air at each sideof t 7 carried into the drum 1O-and no part of they furnace is sub "ected to an accumulation of air is preheated by its passage aro n the firebox and is admitted'to, and absorbsheat frointhe combustion proper at thehottest point before entering the drum 10. The he fire box absorbs all heat adiated from the walls thereof which in thequsualconstruction is, wasted. The temperature of the outer-"walls is kept low by the rapidly moving air be tween them" and the fire box. j The arch, which in the usual type of construction burnsout rapidly and must befoften replaced, is protected by the moving layer of heat-absorbing air which travjel's up the inner side of the outer walls and along'under the arch. The heat from the fire is rapidly excessive temperature.

V'lhe course of the material being dried through the drier is as follows: From the.

feed hopper 24, the material is carried into the drum IO'hy means ofthe helical scraper 26', which, in the feeder 23, acts as a spiral conveyer. It is carried through the; re-

volving drum 10 by gravity, each particle as it falls from the ascending-side of the drum advancing itself slightlylb eca'use of the slant of the drum. Any particles which ad here to the drum are scraped loose by the revolvin scra )er 26 the edes of which are.

8 i c i constantly moving along the inner surface of the drum at an angle which tends to work all material toward the discharge end of the drum 10. The materi'al'falls from the open discharge end of the druminto the housing ton thereof.

20 and is removed through a clean out door l2.- i

While I have described and illustrated "herein a specific form ofimy invention I wish it understoodthat the same may be varied, within the scope of the appended claims without de )artin from the s irit 7 D V 7 thereof.

while I have described and illustratedmy invention,iwhat claim and desire to secure by Letters Patentis: 7 I c 1,1ri a! drier the'combination with a; revolving drum, of a helix mounted in said drum and adapted to scrape material from the wall .thereofandmeans for adjusting said helix in relation to' said wall. 7

2. in a drier the combination with arevolving drum, of a'furna-ce opening"v into one endof said drum and a fire-box contained within said furnace, the walls of said firebox being 'sp'a'ced away from thewalls of said furnace and terminating below the In a drierf'the con'ibinati'on with are, volving drum, of a furnace opening into one end of said drum; a fire-box contained-within said furnace','the walls e f-said fireabox being spaced away from the walls of said furnace and terminating below the top theresaid spaced walls; 1

of and means for admitting air between e. Ina drier the combination with afre-i vo-lving drum, of a furnace opening into one end of said drum; a fire-box contained with-' insaid furnace, the walls of's'aid fire hox bemg spaced away from the walls'of said ARTHUR e. Dania.

l3 affixmy signature.

furnace and terminating below the top

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