US1469877A - disintegrator - Google Patents

Description

Oct. 9 1923.

J. K. BLUM DISINTEGRATOR Filed Aug. 20, 1921 2 sheets-sheet 1 Oct. 9 1923. I 1,469,877

' J. K. BLUM DISINTEGRATOR Filed Aug. 20. ).921 v 2 Sheets-Sheet 2 SI1/wanten,

L/wf/f i 54 MZ @Mo/M V` tion is soconstructed that the pulverized ma- Patented Oct. 9, 1923. Y

f l1,469,877 UNITED STATES PATENT OFFICE.

JOSEPH KLEE BLUM, OF'GREENBURG, NEW YORK, ASSIG-NOR TO K.B. PULVERIZEE.

COMPANY, or NEW Yonx, N.v Y.,

`A CORPORATION OF NEW YORK.

DISINTEGRATOR.

To all. whom t may concern.' g

Be it known that l, Josnri-r K. BLUM, a citizen of the United States, residing at fGreenburg, in the county of lVestchester vention covered by my Patent No. 1,384,821

dated July 19, 1921.

A primary object of the invention is to provide a novel construction and arrangement of elements intended to constitute a practical means of preparing pulverized fuel for'direct delivery to a burner nozzle. To that end, the machine of the' present inventerial is cast upwardly. yinto an enlarged chamber under the impulse of the disintegrator so that the iines can be completely drawn out by a large volume of air moving at relatively slow velocity through the separating chamber. At the same time the improved construction of machine provides for intercepting the material projected from the dismtegrator device in such a manner as to facilitate the return of the heavier and coarser particles to thepulverizing chamber for further treatment- A further, object of the invention is toV provide an organization of parts including meansfor varying the interior area of the separating` chamber whereby the air currents and the pulverized material may be controlled with suchk nicety as to insure thorough separation'of the fines from the heavier particles in condition Vfor burning. In that connection, the invention also provides a `construction wherein wet Vmaterial may be crushed in the mill and still a. proper separation effected between the finesand the coarser particles.

With this andother objects'in view which will more readily appear as the nature `of the invention is better'understood, the same consists inthe novel construction, combination A and arrangement of parts', hereinafter more fully'described, illustrated and claimed. i A preferred and practical embodiment of the inventioni's'shown in the accompanying drawings in Which y Y Y Figure 1 is a vertical sectionalY view,

Application led August 20, 192,1. Serial No. 493,837.

partly in elevation of the improved appa- Y ratus.

Figure 2 is a top plan view of the separating chamber, part of the casing being broken away to more clearlyV show one of the throttling wings.

Figure 3 is a side elevation of ing chamber.

Similar reference characters designate corresponding parts throughout the several figures of the drawings. I

In carrying forward the invention, certain fundamental features are preserved, namely, the casing 1 having a screenless bottom 2, and provided with a feed-opening 3 arranged to deliver the material, preferably into the top part of the casing. In combination with those parts the invention utilizes certain distinctive features which are. important to insure a complete ,release and separation of the fines from the coarser particles, the return of the latter to the pulverizing chamber for further treatment, and the carrying out of the fines with the air currents to the point of burning. The said distinctive features includethe disintegrating chamber C with the rotor R therein, and a partition 4 located at the upper part of the casing and separating the inlet 3 from the casing outlet 5. Furthermore, the arrangementof the partition 4 is such that it forms one wall of a separating .chamber 6 of a the separatgreater cross sectional area than that of the f outlet 5 from the disintegrating chamber and also of a greater cross sectional area than that of the discharge conduit 7 through which the fines are discharged for conveyance to the burner. Accordingly, the presentv invent-ion is based upon and includes the fundamental combination of the disintegrating chamber having a screenless bottom, a

'discharge conduit for the fines, and an endisintegratinggchamber over the screenless bottom in close proximity to the partition 4 thereby serving to forcibly impel Ythe pulverized material upwardly into theseparating chamber 6, and also generating air currents and discharging the same through the suspended 'material, causing the lines to be removed or separated from the heavier par- Vticles and discharged through the conduit 4an important feature, since as previously pointed out, the control of the air currents `is necessary to insure proper sepa `ating conditions. It will be observed that the partition 4 is preferably so arranged as'not only to constitute a proper barrier or separator between the inlet 3 andthe outlet 5, but also forms substantially a vertical wall member for the hopper 9 which supplies or feeds iuto the opening At the inside of the chanr ber 6 the partition or wall 4t may bepro- ,vided with a plurality of offstanding arresting plates or rebound abuti'nents 10 for 4checking heavy particles that may be thrown in` that direction, while leaving the main part of the chamber entirely free and unobstructed for receiving the mainV body of the finer material ejected from the disintegrating chamber and permitting the air to freely exercise its function as the separating ve hicle for the fines. The separating chamber 6 is relatively capacious, and preferably is dis posed at an upward inclination, the sainebeing of box-like form, having the inclined top wallll and the inclined bottom wall 12, which at its upper end preferably conj ytracts at 13 to yjoin with the discharge con.

duit for the fines.

The internal area of the chamber G may be varied to regulate and control not only the air currents but also the separating .acY

1 tion therein by the means of suitable instrumentalities, such for example as by a pair of oppositely arranged adjustable throttling wings 14. As it will be observed from the drawings, the said threttling wings 14. may be ,arranged at oppositesidcs of the separat- `Iing chamber, and constitute in effectadjnsa .able side walls for the chamber., though it is preferablepasv shown, to complete-ly house said wings in` thechamber.

It will further be observed from Figure 2,

Yfor example, that the separating chamber 6 preferably is of comparatively greaterfwidth ,l at its intermediate portion than at-the outlet from the disintegrating chamber, and at i vthe point where thev chamber joinswith. the

discharge' conduit 7- for the lfines. lllowever,

. inall forms of construction, the separating chamber is of relatively largel size, and of decidedly larger cross-sectional area than either the inlet 5 to it or the outlet 7 from it, but in order that all conditions of use Vin connection with different materials may bev properly met it is desirabley to have adequate means for varying the internal area of the said chamber. This is done by use of the throttling wings referred to, thus providing thc machine with an adequate adjustment to F end, the same may be pivotally supported `at their rear ends on the pivot shafts 15 jour nalled as at 1.6 at the bottom of the separating chamber and projecting through thefupper side ofthe casing to connect with any desired type of manually operating adjust ing means, A preferred type of adjusting means is shown to advantage inlfigures Q and 3, from which it will be observed that the said.l shafts 15 may be provided with the worm gears 17 which in turn mesh with the worin pinions 1S on a main operating shaft 19. The said worm pinions 18 havetheir flights oppositely arranged so that from the rock shaft 19 rby the hand wheel 20 orits equivalent a uniform rotary movement will be imparted to each gear, therefore uniform- Aly `shifting the shafts 15 carrying the wings 14. l

As the shafts. 15 -are located adjacent the diverging side walls X of the receiving end ofr the separating chamber, and the tips of the throttling wings 111 extend iu relatively close proximity to the contracted. portion 13 Vof vthe chamber, it will be apparent that upon shifting the wings on their pivots, the space therebetween may be varied as desired tothereby vary the width of the passageway through the separating chamber, and consequently vary the internal area of the chamber according to the requirements and condition of thematerial undertreatment.

l It will now be seen that the separating chamber widens divergently from its inlet 5 which is the discharge outlet for the disintegrating chamber and narrows convergently toward the dischargeoutlet 7 for theines. The advantageof that form'of construction resides in provision thereby being made for `the pulverized material being thrown difrectly through the openingor duct 5 into a space expanding in size fanlike. Conseo'uently, the mass of material ejected from the pulverizing chamber is free to disperse and scatter inthe receiving end of the separating chambenthereby; permitting the air currents to more readilypick out the fines and become intimately mixed therewith, pro-` .viding inV the case ofscoal a fuel ready for lburning' when conveyedl through la nozzle.

Furthermore, it will be seen that the top wall and the bottom wall of the separating Y chamber incline upwardly and extend practically the Stull distance from the dared receiving end X to the contracted discharging end 13. This construction is important because heavy particles of the material which may not be intercepted by the checks l0 are given a full opportunity to ricochet from the top wall ll to the bottom wall l2 and backA again to the pulverizing chamber for y'further treatment on to the rotor.

- While there are shown in the drawings several 'detail features ot construction in connection with the said hopper for the pulverising chamber, and particularly in connection with the pulverizing chamber itself,V

, .of the advantages thereof.

I claim: y

1. In a pulverizer, the disintegrating chamber with a rotor therein, and. having a feed-openingand Va discharge outlet for pulverulent material, a discharge conduit for the iines and an enlarged separating chamber interposed between said outlet and said conduit and having at its receiving end a partition separating the inlet of the disintegrating chamber from its outlet and provided at one side with rebound abutments.-

2. In a pulverizer, the disintegrating chamber with a rotor therein, and having an outlet for pulverulent material, a discharge conduit Jfor the iines, an enlarged air separating-chamber constituting the inlet to said discharge conduit and means for varying the internal area of said separating chamber. l

3. Tn a pulverizer, the disintegrating chamber with a rotor therein and having an outlet for pulverulent material, a discharge conduit for'the fines, an outwardly projecting enlarged air separating-chamber in communication with the disintegrating chamber outlet and constituting` the Yinlet to the said discharge conduit, and means i'or controlling Vthe volume and velocity of material and air currents passing through such separating chamber.

e. In a pulverizer. the disintegrating chamber with a rotor therein, a discharge conduit for theiines, an enlarged air sepa- Viating-chamber communicating with the disintegrating chamber and with said discharge conduit and means for varying the internal area of the separating chamber, said means including an adjustable throttling wing.

5. ln a pulverizer, the disintegrating chamber with a rotor therein, a discharge conduit for the fin-es, an enlarged air separating-chamber communicating with the disintegrating chamber and with said discharge conduit, means for varying the in- 'A ,ternal area of the separating chamber, said means comprising a pair ot relatively adjustable throttiing wings arranged within the chamber at opposite sides thereof and means exterior to said chamber for adjusting the position of said Wings.

6. ln a screenless type pulverizer, a disintegrating chamberl having a feed-opening, a disintegrator in said chamber, a discharge conduit forv the ines, a relatively capacious separating chamber constituting the inlet tothe discharge conduit, a partition constituting one wall of the feed opening for the disintegrator and extending into substantial proximity with the periphery of the ldisintegrator, said partition constituting one wall of the separating chamber and cooperating with the casing at itslower end to form the outlet from the disintegrating chamber and the mouth of the separating chamber, and a plurality oi rebound abutments carried by the face ot said partition opening into the separating cham er.

Y In testimony whereof I hereunto aiiiX my vsignature in the presence of two witnesses.

JOSEPH KLEE BLUM. Witnesses:

HILDA Mosns, A. J. BANUBL, Jr.

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