US848362A - Drier. - Google Patents

Description

1101848362. v v PATENTED MAR.'26,1907.

0. B. "GEIGER.

DRIER. v

APPLIOAPTION FILED NOV. 8, 1906.

Lil

of the material to be treated. The

' UNITED STATES PATENT OFFICE.

(llAltLliS li. Uliltilllt, ()F L01. ISYILLE, KENTUCKY, ASSIGNOR OF ONE-THIRD TO HIMSELF,

()Xltl-Tllllil) 'IO WILLIAM IiOOP,

AND ONE-THIRD TO G.

WALTER FI-Slibl, OI LOUISVILLE, IQISXTUCKY.

DRIER.

Specification of Letters Patent.

Patented March 26, 1907.

Application filed November 8,1906. Serial No. 342.447.

ville, in the county of Jefferson and State of Kentucky, have invented new and useful Improvements in Driers, of which the following is a specification, reference being had to the accompanying drawings, forming a. part thereof.

i This invention relates to driers of the class employing as a drying-chamber an approximately horizontal cylinder rotating about its axis and receiving at one end the material to be dried and discharging the dried material from the other end, and it is shown applied to such a drier in which the heating element is steam introduced into the pipes with which the rotary cylinder is furnished.

The particular improvements constituting this invention consist in locating the means for feeding in the material to be dried in position where it is adapted also to convey back into the drier the line solid material which is sometimes carried up with the escaping vapors and in means for providing for the difference in expansion of the inner and outer sets of steam-tubes.

It consists also in the specific features of construction for the purpose indicated, which may be understood from the description, and are set out in the claims.

In the drawings, Figure 1 is an axial section of a drier embodying the improvements constituting this invention. Fig. 2 is a section at the line 2 2 on Fig. 1 Fig. 3 is a section at the line 3 3 on Fig. 1 from one side to. the diametric linen: w on said Fig. 3 and at the line 4 4 on said Fig. 1 from said diametric line to the other side.

The cylinder 1 has at the receiving end a head consisting of a manifold or chambered plate 2 3, said head consisting of two parts, an outer annular part 2 and a central part 3, the central part being centered within the annular part by four radial spokes or arms 3, which seat, respectively, upon the four inwardly-projecting convolutions 2 of said annular element, as seen in Fig. 2. The two elements when assembled together in operative position constitute an apertured head for said cylinder, the four apertures 1- constitu ting the means of access into the cylinder cone-frusturn 5, attached to the outer side of the annular element 2 ofthe head completely encompassing all the apertures, 1*, so that they open from the cylinder only into said conefrustum, constitutes a vestibule or gathering mouth for the receiving end of the cylinder. At the opposite end the cylinder-head consists of a manifold 6, somewhat similar in form to the manifold 2 3, but made unitar instead of in two sections. The shell or cy inder 1 is secured directly to a flange 2 of the manifold at the receiving end. At the opposite end said shell is secured to a flange 7 a of a ring 7, which encompasses the manifold 6, the latter fitting within free to move longitudinally therein for a short distance to accommodate the difference in expansion and contraction between the shell 1 and the steam-pipes 8, which connect said manifold 6 with the outer element 2 of the opposite manifold. To the ring 7 there is secured a cylindrical extension 9, which constitutes the discharge-111011 th of the entire rotating element of the drier. The annular element 2 of the receiving manifold and the ring 7 at the opposite end ail'ord means by which the entire rotating element of the drier said ring so as to be is lodged upon its supporting-rollers 10 10,

. tate said pinion.

At the receiving end there is a feed-chamber 14, mounted in fixed position and terminating in a cylindrical flange 17, which is concentric with the mouth of the cone-frustum 5, into which said flange protrudes, so that material may be delivered from said chamber 14into the cone-frustum, and thereby into the rotating cylinder 1. For feeding the material through the feed-chamber 14 and into the cone-frustum a spiral conveyer 15 is located at the bottom of said chamber 14, having its shaft protruding through and suitably journaled in the outer end of the chamber and having a further bearing in a bracket 18 offset into the cone-frustum from the opposite end of the chamber, said entire end of the chamber which protrudes into the cone-frustum being open. 19 is a chute through which the material is delivered into the top of the feed-chamber.

' 20 is a vapor-pipe leading off from the upper side of the feed-chamber between thechute 19 and the eone-frustum 5.

21 is a partition which depends from the 1 top of the feed-chamber between the chute 19 and the vapor-pipe 20, extending down substantially to the top of the spiral conveyer, and thereby partitioning the portion of the space into which the material is delivered from the chute 19 from the portion by which the vapor passes out of the cylinder and is discharged. In the vapor-pipe 20, between its connection with the chamber 14 and its upper discharge end, there .is located an expanded chamber 22 in which light particles of solid matter carried up by the vapors, losing somewhat of their momentum as the vapors expand in said chamber, are precipitated back into the chamber 14. The location of the conveyer 15 at the bottom of said feed-chamber 14 and the connection of the vaporsdischarge pipe 20, as shown, from said feed-chamber 14 facilitates the recovery of the solid matter thus precipitatedand avoids clogging of the passages therewith, 'because it falls, as indicated, directly upon the screw conveyer and is carried back into the cylin der with the incoming new material.

In order to afford sufficient heating surface and to distribute it to the best advantage for the purposes of the drier, it will be observed that the steam-pipes consistof two distinct systems, one an annular system, which connects the annular element 2 of the left-hand manifold with. the opposite manifold, and

- the other a central system, which connects the inner element 3 of said left-hand manifold.

with the opposite manifold. It is observedin practice that the expansion and contraction of these two systems of pipes isliable to be diflerent, and this difference of expansion is accommodated by making the left-hand manifold, as described, in two parts connected with said two systems of pipes, res ectively. No mechanical connection or attac ment of the two parts to each other is necessary for any purpose, the inner part being merely f material.

manner, being poured toward the center,

through the ducts 24 from each of the several sectoral chambers 30, into" which the manifold isdivided by the radial partitions 25 as such sectoral chambers respectively. approachthe upper side in the rotation of the cylinder, the water being received at the center by the sleeve 26, which protrudes from the manifold out past the fixedhead 27, said sleeve being provided with a trap-chamber 28, from which the water escapes by way of the float-controlled valve 31 into the fixed tube 32 and thence is delivered by the draincock 33. The tube 32 rotrudes from any suitable support throug i into the trap-chamber 28, and the steam-supply passage extends axially fixed tube 32, the pipe 38 belng screwed into a stuffing-box 34 i through said it at the outer end and a terminal pi e 37 being screwed into it at the inner en for delivering steam into the center of the mani-- fold. This construction of the manifold is fully shown in my Patent No; 750,051, dated January 19. 1904 36 36 are caps for closing apertures in the outer 'walls of the manifolds through which the steam-pipes 8 are accessible for cleaning.-

1. A steam-drier comprising an.apfproximately horizontal cylinder mounted or rotation about its axis, having its head consi'sting of chambered manifolds; steamipes' connecting said manifolds, the latter eing apertured between the groups of steam.

pipes for entrance anddischarge of the. ma-

terial to be treated; a cone-frustum atthe receivin end secured at the outer side of the manifol encom assing all said apertures for gathering and irecting material to the latter; a fixed feed-chamber having a terminal conaxial with the cylinder and protruding into the cone-frustum a conveyer at the bottom of said chamber and a vapor-discharge pipe leading from the top of the chamber.

2. A steam-drier comprising a horizontal rotai'y cylinder having apertured heads for receiving and delivering the materialfto be treated; a'.ei rcular vestibule-piece at. the ,outer sideof the receiving-head encompassing all'the apertures therethrough; a fixed chamber having a terminalmouth conaxial with the .cylinder and protrudingintonthe vestibule-piece, said chamber having apartition extending from the upper side downward toward the bottom; a conveyer in the bottom of said chamber extending past the lower edge of said partition; a vapor-escape pipe leading from the top' of said chamber etween the partition andthe cylinder, and a connection forgsupplying material tobe treated above the conveyer at the outer side of said-partition.

.3. A steam-drier comprising a cylinder I having its heads hollow for steam-chambers;

longitudinally-extending pipes within the.

cylinder connecting the corresponding chambers of theopposite heads, such pipes being i distributed in an inner group and an outer group, one of the heads being formed in two sections seating one within the other with freedom of relativemovement axially with respect to the cylinder, the two groups of pipe being connected to said two sections respectively. v I

4. A steam-drier consisting of a cylinder 5 having chambered heads; steam-pipes connecting the two heads distributed-in two groups, one within the other, the shell inclosing all the steam-pipes having an'extension at one end' Within which the head at LO that end seats with freedom of movement longitudinally with respect to the cylinder,

the head at the other end consisting of an annular and a central section, the two groupsof pipes being connected with said" .two sections respectively, the outer or annu- 15 lar section being joined rigidly to the shell, and the inner section being free to move relatively to the outer longitudinally of the, cylinder.-

In testimony' whereof I have hereunto set 20 my hand, at Louisville, Kentugky, this 30th I day of October, 1906. I f

. CHARLES E. GEIGER.

Witnesses:

C. A. FISKE; Jr., M. VAN DYKE.

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