US2215201A - Distributing apparatus - Google Patents

Description

Sept. 17, 1940. M. VOGYEL-JORGENSEN 2,215,201 I DISTRiBUTiNG APPARATUS 2 Sheets-Sheet 1 Filed Feb. 24, "1938 aim.

Ma V 17, 1940. M. IOGE L.-JORGENSEN 3 5- DISTRIBUTING APPARATUS Filed Feb. 24 1938 ATTORNEY;

Patented Sept. 17, 1940 I t 7 2,215,201 DISTRIBUTING APPARATUS Application February 24, 1938, Serial No. 192,257 12 Claims. (01. 209-236) This invention relates to apparatus for disouter surface-of the layer, the distribution of the tributing finely divided materials, and is conmaterials'in this manner insuringthat the finer cerned more particularly with a novel distributparticles will not pass through the grate,

iri'g apparatus by which a layer-of such materials In the new apparatus, the material to be disof substantially uniform thickness and of contributed is placed upon a support between the 5 siderable width may be deposited on a surface side walls near one end of the support and is during relative movement of the surface and the advanced along the support by the endwise reapparatus. The new apparatus may be used for ciprocation of the latter to a discharge opening the handling of materials of numerous kinds, nearthe other end, the opening being formed but since the device affords special advantages partly in the support and partly in one wall. The in the feeding of cement raw materials'in moist walls are of uniform spacing at the point of decondition into kilns wherein the'materials are posit of the material upon the support, but adpreliminarily dried by. hot gases passing through jacent the discharge opening, the solid wall is a layer thereof, an embodiment of the invention inclined toward that containing the opening, and

15 suitable for that purpose will be illustrated and deflector plates are mounted on the inclined wall 15 described in detail for purposes of explanation. in such arrangement that the advancing material It'is to be understood, however, and will be is thrown laterally through the opening by its readily apparent, that the utility of the invencontact with t e pl If it is desired te P tion'is not limited to that particular application. duce a layer in which particles of one size lie "In the manufacture of cement by means of the near one surface of the layer and particles of a kilns disclosed in -my United States Patent No. different size near the Other surface, a Series f ,02 53, issued December 17, 1935, the cement teeth, similar to a comb, are mounted to underraw materials to' be burned are first fed into a lie the discharge Open e spac ng between pug mill "where they are moistened and mixed the teeth being such that the finer particles will UNITED STATES PATENT OFFICE together, the output from the mill being depositpass between the teeth and the larger ones will ed-in a layer upon 'the interior of a cylindrical sli e wn a n he e h an p ss off he ends grate or carrier formed as an extension at the t ereOf- I entrance end of the kiln. The hot gases pass In t se Of the distributing apparatus wit thr th layer of material onlthe grate t efmaterials which are liable, to adhere to the sidefeet a preliminary drying of the material, and walls and support, the support and v the walls when the materials have been carried through may be made doubleflto provide a chamber 30 substantially a complete revolution-of the grate, hr g which hot ea may be p The they are discharged therefrom and introduced heating of t e pp a l s n is manner 3 into the kiln where the calcination and sintering prevents the adherence of the materi he e o takes lace. The construction of the grate is and thusincreases the efficiency of the appa- 35 such that the layer of materials is maintained l l 1 a thereon by the gases passing through the layer 3 a better understanding f thee and in order that the layer may be maintained in reference may be made to the ac mpany position and the materials properly dried; it is d w in which, 1 important that the materials-be deposited upon F 1 s 3 Vertical sectional View thr u h p the grate in a layer of substantially uniform of a rotary kiln,'sho wing one form of the new 40 thickness. It is also desirable that in depositing apparatus f distributing nt r w materials the layer, the particles or lumps of the material on the grate carrier 0f e k p of larger size be deposited in direct contact with Fig. 2 is P View Of the distributing pp a 'the grate, and the particles of smaller size be sh0wninFig=1; dist ibut d th r Fig. 3 is a partial sectional view on the line The apparatus of the-invention is particularly -3 and adapted for the handlingoi the materials to be Fig. 4 is asectional view-on the line 4-4 in delivered to the grate of 'a kiln of the'type rel v ferred to and the'distribution of the materials in In e app shownlin F the inlet d 0 a layer of uniform thickness on the grate. The of the kiln is designated gen y y he numernew apparatus may also be so constructedthat al I!) and comprises a conical section il leading it produces a layer in which the coarser partov the usual cylindrical section, not shown, and ticles are in contact with the grate or other I containing flights i2 on its inner surface, for pervious support and the flner particles form the advancing the raw material. The conical sec- 55 tion terminates in a cylindrical BPZZGGBlOIl 63 which carries radial plates I4 supporting a cylindrical grate 15. The grate I5 and the 6X- tension l3 rotate with the drum, being connected thereto by an annular casting or ring l6 which closely surrounds the end of the conical section H and is provided with webs ll aligned with the plates M, the Webs and plates together forming longitudinal passages leading away from'the space surrounding the grate.

Cement raw materials deposited on the inside of the grate l5 are held against the grate by the pressure of the hot gases from the kiln which pass through the grate and the layer of material thereon. The gases are then conducted through the longitudinal passages formed by the plates 54 and webs l1 and through openings I8 in the periphery of ring Hi to a mantle I9 surrounding the ring IS. The portion of the mantle IS in direct contact with the ring is movable to accommodate expansions and contractions of the kiln, While the lower part of the mantle is provided with an outlet duct 20 leadingto an induced draft fan, not shown.

As the kiln rotates, the raw materials are distributed continuously on the grate and are carried thereby through substantially a complete revolution, whereupon the materials are discharged from the grate by suitable means, not shown, and fall into a trough 2|. The latter extends through and is supported by a stationary end wall 22 supported by a standard 23, the end wall being formed with a circular flange 24 which fits closely within a circular flange 25 mounted on the extension 13. The space between the concentric flanges 24,- 25 may be sealed by suitable means, not shown, to prevent the escape of gas from the interior of the cylindrical grate while permitting rotation of the kiln relative to the end wall 22. A screw conveyor 26 within the trough 2| advances the materials along the trough to a chute 21, from which they pass by gravity into the main compartment of the kiln.

The apparatus described above is disclosed in substantially identical form in my Patent No. 2,024,453 and forms no part of the present invention, the apparatus being described herein only for the purpose of illustrating one application of the new distributing apparatus, which in the present instance operates to distribute the cement raw materials on the rotary grate Hi.

The distributing apparatus illustrated com.- prises an elongated casing 30 which projects through an opening 3| in the stationary end wall 22 and into the grate l5. The casing is mounted for longitudinal movement in the opening 3| on supporting arms 32 arranged in pairs on Qrpposite sides of the casing, the arms being pivotally connected at their upper ends to the casing and at their lower ends to a pair of parallel supporting beams 33. The beams 33 are interconnected and'mounted on flanged wheels 34 movable on a track 35, so that the distributing apparatus may be withdrawn when desired. A link 35 pivotally connected at one end to the outer end of casing 30 is attached at its other end to a sleeve 31 mounted on an eccentric 38 on a shaft 39 Journaled on the beams 33, and the rotation of the shaft by sprocket wheel 40 mounted on the shaft and driven through a chain 4! by any suitable power source, causes endwise reciprocation of the casing 30.

The casing in the construction shown includes an outer shell 42 of U-shaped cross-section which extends into the grate beyond the stationary end wall 22, and a trough 43 having upwardlydiverging side walls 43a and a top 44. The trough is supported in the shell With its bottom above the bottom of the shell and with the top edges of its side walls meeting the top edges of the side walls of the shell, so that a chamber 45 is formed which is open to the interior of the grate 5. From the outer end of the casing, the top of the trough and the bottom of the shell diverge toward the kiln so that the casing is of greatest height just outside the end wall 22, and from there, the top of thetrough and the bottom of the shell converge toward the inner end of the casing, The portion of the casing in theopening 3| is provided with wedges 46, the outer faces of which extend in the direction in which the casing is reciprocated on the arms 32. If desired, suitable sealing means, not shown, may be employed to seal the opening 3| completely around the casing while permitting reciprocation of the casing in the opening. k v

The cement raw materials are introduced into the trough 43 through an elongated opening 48 in the top thereof, preferably from a pug mill 49,:

which comprises a casing 50containing a shaft 5| provided with blades 52 and rotated by any suitable means. The materials are moistened in the mill by a suitable discharge pipe and, the action of the mill produces a mixture which is fine-grained and porous. The materials in this condition pass through discharge openings 53 in the bottom of the mill and enter the trough 43, theopening 48 being-of sufficient length to permit the material to fall in the trough while the casing 30 is reciprocating. If desired, sets of closely spaced teeth 54 adapted to extend into the discharge openings 53 may be mounted on shaft 5| to prevent clogging of. the openings by the discharging materials. I e

The bottom of trough 43 wardly into the grate is cut away along, one side to form a discharge opening 55. At the opposite side of the trough, the side wall is inclined toward the opening 55, and mounted in front of the inclined portion is. a baille formed by a pair'of plates 56 supported by slopes slightlyv down- I 5. and at its discharge end,

brackets 51 secured to the-top of the trough and extending through an opening 58 therein, the brackets being adjustable to vary the position of the battle. Theside wall of the trough ad.- jacent the opening is provided with an opening 59, overlying which is a hood 59a, open at the bottom. .Secured to the lower edge of the hood is a comb 60 having teeth 6| inclined downwardly,

in a direction opposite to that in which the bottom of the gratemoves in the normal rotation of the kiln. The teeth Bl are spaced relatively closely and the comb is positioned so. that the articles and lumps of raw material passing through interior of the kiln through thedistributing apparatus, a flexible flap 62 may be mounted across the trough so that its free lower edge engages the surface of the material advancingalong the trough. The gases which enter the chamber between the trough and casing are withdrawn through a pipe 53 communicating with the chamber and connected to a fan, if desired, and

these gases heat the bottom and sides of the trough and prevent the moist raw materials from adhering thereto; While the use of the casing andltrough, providing thegas chamben is desirable inan apparatus used for the distribution of material which islikely to adhere to the trough, the casing may be omitted'if heatingof the bottom" and sides of the trough'is not desired;

In the apparatus illustratedytheteeth of the comb are so directedfwith'relation tothe discharge; opening and theidirection of travel of the grate, that the larger particles, which pass down'fthe teeth; are deposited indirect contact with the grate and the finer particles deposited 5 thereon. If the gratewere traveling in the oppo site direction, the comb would be placed atthe opposite" side of thedischarge'end with its teeth inclined in the opposite direction. Similar1y,.if it were desirable to produce a layer in which the fine particles are incontact' with the supporting surface and the coarse particles deposited thereon, this result could be obtained by suitable disposition of the comb, and the comb could be omitted altogether if stratification by particle size in the layer were not desired.

In the operation of the new distributing apparatus, the materials deposited in the trough are advanced along the trough by the reciprocating movement of the casing and trough to the baiile plates which are so adjusted as to throw the materials laterally through the discharge openings. The materials fall upon the teeth of the comb, and the coarser particles or lumps slide down the teeth and fall off the ends thereof upon the grate, while the finer particles pass between the teeth and are distributed evenly over the layer of coarser particles. In the layer thus formed, the coarser particles form a bed for the finer particles which would otherwise pass through the grate.

While I have described the use of the new distributing apparatus. in connection with my kiln, it will be apparent that it may be used for many other purposes, and the relative movement of the apparatus and the surface may be effected either by moving the surface while the apparatus remains stationary as explained above or by moving the apparatus along the stationary surface.

I claim:

1. In a distributing apparatus the combination of a surface having an opening along one side, means for reciprocating the surface to move material placed thereon toward the opening, means in the path of the advancing material for directing it laterally to pass out through the opening, and a comb connected'to the surface and movable therewith, the comb lying near said opening in a position to intercept the material passing through the opening and acting as a classifier therefor.

2. Iii a' distributing apparatus, the combinationof a trough having side walls and a bottom, a discharge opening formed partly in the bottom along one side and partly in theadjacent wall, the opposite wall having a portion inclined toward the opening, meansfor reciprocating the trough to advance material placed thereon toward the opening, and means mounted adjacent the-inclined portion of said opposite wall and lying in the path of the advancing material, said means acting to direct the material laterally to pass out said opening.

3. A distributing apparatus comprising a trough having a bottom and side walls and a discharge openingformed partly in the bottom and partly in one side wall near one end, the walls lying at substantially uniform spacing at theopposite end of the trough and the'solid wall near the discharge end being inclined toward the wall containing the opening, means for reciprocating the trough endwise to move material therein toward the discharge end, and deflector members mounted on the inclined wall and op-' erable to throw the advancing material laterally through said opening.

4. A distributing apparatus comprising a support for conveying material therealong andhavinga-discharge opening near one end, means for reciprocating the support endwise to move material thereon toward the discharge opening, and a comb mounted on the support with its teeth extending obliquely downwardly under said opening, the teeth having free ends.

5. A distributing apparatus comprising a trough having a discharge opening near one end, means for reciprocating the trough endwise to move material therein toward the discharge end, a baiile in the trough operable to throw the advancing material through said opening, a hood mounted on the trough over the discharge opening and open at the bottom, and a plurality of closely spaced teeth on the hood extending obliquely downwardly under said opening.

6. In combination, a surface on which material is to be distributed, a discharge device for depositing material by gravity on the surface, a comb mounted on said device for intercepting material falling therefrom toward the surface, the comb having teeth extending obliquely downwardly toward the surface, and means for relatively moving the discharge device and surface in a direction parallel to said teeth.

'I. In apparatus for distributing material on a moving surface, a discharge device for depositing material by gravity on the surface, and a comb positioned to intercept material falling from said device and with its teeth extending obliquely downwardly toward the surface in a direction opposite to the direction of movement of the surface.

8. In a distributing apparatus, the combination of a trough defined by side and bottom walls and having a discharge opening in at least one of the walls adjacent a line of junction of the bottom wall and a side wall, the opposite side wall having a portion inclined toward the opening, means for reciprocating the trough to advance material placed thereon toward the opening, and a baiile mounted adjacent said inclined portion and lying in the path of the advancing material, the baflle being adjustable relative to said inclined portion and acting .to direct the material laterally to pass out said opening.

9. In a distributing apparatus, the combination of a trough defined by side and bottom walls under the opening in position to intercept material passing through the opening, the comb classifying the material into two parts.

10. In a. distributing apparatus, the combination of a support for conveying material and having a discharge opening, means for reciprocating the support to move the material thereon toward the opening, and a comb mounted on the support in position to interceptmaterial passing through the opening and operable to classify the material I into two parts, the comb having flexible teeth adapted to vibrate relative to the support when 1 thesupport is reciprocated.

11. In a distributing apparatus, the combina tion of a trough defined by side and bottom walls chamber adjacent the bottomand sidewalls or the trough, the chamber having an opening in one of its walls for passage of a fluid, means for reciprocating the trough to advance material placed thereon toward the discharge opening, and means mounted adjacent said inclined 7 portion and lying in thepath' of the advancing, material,

said means last named acting to direct the material laterally to pass out said opening.

12.v A distributing apparatus com rising adischarge device, means for reciprocating said device, and a comb connected ,to said device. and

having flexible teeth vibrated by the reciprocae. tion of said device and extending obliquely down wardly and free at their ends, the comb being so positioned that the teeth intercept material falling from said device.

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