US1618011A - Charging apparatus for furnaces and the like - Google Patents

Description

Feb. Y 15,1927.

H. 'o.`c. 1sENBERG E1- AL CHARGING AQPAATUS FOR FURNACES AND THE LIKE 2 Sheets-.Sheet l Fild Nov. 21. 1924 Feb.' 15., 1192.7.

, 1,618,011 H. o. c; ISENBERG. ET AL CHARGING APPARATUS FOR 4FURIIACES AND THE LIKE Filed Nov. 21. 1924 l 2 sheets-sheet 2 HANs o. c. IsnNBnns, or NNW ironic-N. Y., ANn WALTER PIERNAY, or srrzrtrIN,`

GERMANZAssIsNoRsTo UNIVERSAL INeiNnRAron oonronArroN, A CORPORA- Y TIoN or4 DELAWARE.

CHANGING APPARATUS ron rURNAoEsANn'rHE LIKET y' Application filed November 21,1924. lvSerial No. 751,2767. l y

Our invention relates to improvements in fee'd Vchutes suchv as are` adapted to feedv lbroken .or divided material such as coal. The invention'is intended to provide a simple and reliable means for controlling the amount of material flowing through the chute, and for delivering definite amounts of the materialto the furnace or other point of delivery at desired times. kThe invention 1 is also intended to provide ai series vof .succeeding closures through which the material passes which will operate successively so that one closure will be close'dbefore another isf opened beneath it, and thus the chute Vserves as a seal to prevent the escape of gases. They invention also includescertain details which will be described forfnicely.regulatingV the,

flow and delivery of chute. Y ,Y

Before proceeding to describe the spe? cific construction ofthe improved feeding material through the apparatus, We desire' toA have it under stood'that changesin the form, proportion, size, and minor details may loe-made within the scope of the claimswithout departing from the spirit or sacrificing .anyA of theadvantages'of theinvention. l

In the accompanying drawings forming a part of this specication we haveshown a. single embodiment of ourfinvention'by way Figure 4 is an elevation similar to Figl lure 2A but seen from the opposite side.,

Figure 5 'is a horizontal section taken on the line Ak-'B of Figure 4: at a somewhat* the plate 5, and such load is sufliclent to larger scale, and

Figure 6 is a horizontal sectiontaken on the lineC-D of Figure 4L likewise, in ay somewhat largery scale.

In the embodiment shown', the material'r is supplied in any suitable manner to the fun nel 1 of the feeding chute, and a horizontal sliding: plate 2 iskprovided.y in connection with the funnel 1 for the purpose ofy vcontrolling the supply, that is to say, regulating vthe amount of the suppliedmaterial as de-v sired.` To this endthe sliding plate 2, may be adjusted or positionedby meansof a 'hand wheel 2a at the-outer end Ofan adjusting spindle 2b, as will be readily'un'derstood on inspection of Figure 1. Close below thef'slide a `depending plate or flap 3V is pivotally mounted inthe funnel, and a handr lever' 3a iskeyed to the outer end of the one trunnion of the ap 3 for setting purposes, so that the latter canl be given any desired inclined position in order toproperlyguide,4 the material from the funnel into the drum 4:.

VAt the vsame time the fillingV ldegree ofthe l drum'also depends upon thev setting of the(l Vialoa `V As hereinbeforestate-d thedrum 4 is divided byineans of radial partitions l? -into a number of compartments 4b. As shown in the example'of Figure 1 .there are four com-4 partments 1b provided, but it goeswithout l lsaying that any other appropriate number'v Vof compartments may be chosen to comply vwith any particular requirement. TheV direction yofVrotation-of thedrum is denoted- Y by anvarrow.

The uppermost chamber 6 'of the chute with the drum-4 mounted therein is open at thei bottom, butthe opening is normally held closed by the plate or door 5 keyed to a shaft 5a duly supported in bearings in the wall of vthe chamber 6aL next below; Firmly attached to the outer end of'ithe shaft 5al is an arm`5c carrying .an adjustableV weight 5b in orde-r to normally holdgthe` plate 5in its closed position, as shown in Figure 1, that is to say, L

with its upper surface in contact with the I wall 8 of the chamber. It will be seen that when a loadl of material is deposited vupon the chamber 6, as shown in Figure 3, butv immediately thereuponthe plate 5 will re-y turn to its-normal or closing position.y

yso

A closing plate or door 7 of similar construction comprising a shaft 7a and an adjustable weight 7b mounted on an arm 7c is provided at the bottom end of the chamber 6a. In a like manner the overbalancing weight7b is adjusted to normally hold thel plate 7 in its closedv position as shown in` Y Figure l, and to turn the plate down intoA ther drop into its place of destination.

`l)referably thelowerplate or door may be displaced or positioned in a directiion opposed with respectto that of the upper plate 5, as willbe seen in Figure 1, so that the niaterialdropping vfrom the upper plate 5 will strike upon the plate 7 at a point near the axis of rotation of the latter.

The-continuous movement ofthe feeding drum 4 may be accomplished by means of a belt drive, a chain gearing or a toothed gearing,- in any suitable manner. Figures l and 5 illustrate an arrangement for intermittent rotation of the druii'i.I Aln this modification the drive comprises an eccentric 9LL with a rod 9 Vconnected with a bell crank lever 10.

'The horizontal arm of the latter is connect-Vv ed by ineansof a rod 11V with two parallel discs 15k-12, loosely mounted on the shaft 14 carrying the drum e and duly supported iii` bearings provided inthe walls of the chute, so that the movement of the eccentric 92L will cause the two discs 152-12a to rotate. nterinediate between' the latter aY toothed Wheel 15 is keyed to the shaft 14 which also carries the drum Ll, and a pawl 18 is provided between the two discs on a pin firmly connected with the latter. n As will be seen in y Figure et, the two discs 12 and 12"l are of a larger diameter than the wheel 15 so that the pawl 18 will always be in engagement with the toothed circumference of the latter.

As' the movement of the eccentric 9a causes the toothed wheel 15 to intermittently rotate, through the agency of the bell crank lever 10 the rod 11, and the discs 1212a with the pawl 18 therebetween, the drum 4 will at the same time be rotated accordingly at intervals. The pawl 13 and the ycti-operating wheel 15 obviously are actuated and work in the usual manner of a pawl and ratchet wheel arrangement, to intermittently or stepwise feed the wheel 15 and the drum 4 for-Vk ward.A It will be noticed by reference to Figure 1` that the nvall 8 of the chamber 6 extends well down into the chamber 6 forming a. discharge spout, and thevcorresponding closed.

gives them the function of a spout so as to form a concentrated discharge, and the said ends also make a suitable seat for the closing` plates 5 and Y Y Vif e shall now proceed to describe the operation of the charging apparatus.

The material supplieffllto' the funnel 1 in any appropriate inannerrdesceiids towards the drum el between the wall of the funnel and the properly adjusted guiding plate or flap 8. Owing to the rotation Yof the drum si the material deposited in any of the compartments lll of the drum is discharged therefrom on the opposite side, with respect to the filling side, into the chamber 6 and 'ac-A cumulates on the' bottom plate 5.V As soon as the discharge and accumulation is linished, the plate 5 vreaches a weight in excess of the counter-balancing weight .5b of the plat-e, that is to say constitutesa charge or load of a certain predetermined weight,V in accordance with the adjustment of the weight 5b, and the plate 5 will turn about its pivot or axis 5u and drop the load into the chamber` 6, whereupon the plate 5 will return to its normal or .closing position. time the lower plate -or door 7 begins. to open .under the weight of the received load and' discharges the inaterialinto lthelow'ermost chamber 6*. 'lhis-done, the plate, 7 also returns to its normal or closing position, while the material drops intothe furnace or the like inforder to undergoa treatmentaor to act as desired.

The distance between the two plates 5 and 7 and the over-balance of the weights 5b and u 7b respectively, may be chosen in a manner it the saine` that-the chute will always be closed by at"- least the one or the other plate in order that, at each charging period orV at predetermined intervals, only the load'of a single compart-f nient oi' the drum 4 will be fed to the furnace or the like. ln case of combining the feeding apparatus with a furnace or plant inV which chemicalprocesses are carried'out that do not allow the admission of air through llt) the. chute or develop useful or injurious gases 4 which ought not to be permitted to escape through the chute, the particular construc-` closure plates operated intermittently butV To positively at predetermined intervals. p thisend the shaft 7 a has a crank 19 connected by a rod 18 with an arm 17 pivotally mounted in the wall of the chute and the lever `5C Vis connected. by a rod 21 with a similar arni 20. On the other hand'there are three dogs gravity, I

'y seal, the backflow of gases through'the chuteVA` or cams 16 keyed to the outer Vendofk the drum shaft` 14: which at each rotation" will cause the cams to turn the arms 17 and 2O intermittentlyand tothereby raise the levers 5c and 7 in order to open the plates Vor doors 5 and' 7 respectively. 4 r1`hus the 'latter are opened positively and `closed the actionof the weights 5b and 7" respectively. 1

If for any reason it is desired to have the closure plates 5 *andv 7 voperate by gravity,4

this -can lbe* donev by simply removing the connecting rods 1S and 21 from the arins 17- and 19 and 20 and 5 respectively. Thus it will be seen that without any modicationl the drinn and closure plates can'operate in desired sequence, and either positively or by As shown in FiguresA t andthe conneci tion of the rod llwith'the horizontal arm of the bell crank lever 10 is adjustable Vso that atv each .stroke of the rod the'wheel Y15 will be revolved for `a certain predetermined numberof teeth in accordance with the adjustment made. In this manner the rotary speed of the ydrum a may be increased `or reduced.

It will be seen that the arrangement described acts as aseal because when a deposit from oner of the compartments of the drum has dropped on the closure 5 and passed through, said closure will returnto its closed position before the weight ofthe material opensthe closure 7, and as these closures act lsuccessively', andas the drum also in connection with they incoming `fuel acts as a is prevented.

ThoughA we have described with great particularity of detail a-speciiic embodiment of our invention, yet it is not to be understood therefrom that the invention is *limH` ited to the particular embodiment disclosed. Various modifications in detail and in the arrangement `and combination of the parts may be made by tliosevei'sed` in the art, without departure from the invention.

1. A feeding chute for dividedmaterial, comprising inv combination a rotary feeding drum, a pawl and ratchet device in operative Y connection with theV drum, means for actu ating the said device to impart stepwise inotion to the drum a chamber locatedbelow said drum, a plate at the bottom of said chamber, a second chamber below the first denoted chamber, a plate at the bottom of said second chamber, and means for positively operating the two plates in succession at predetermined times and in accordance with the intermittent movements of the drum, substantially asl and for the purpose set forth.

2; A feeding lchute for divided material, comprising in combination a rotary feeding drum, means for intermittently imparting ber. Y 4. In a feed chute, in combination, a plurotary'rniotionfto the drum, a chamber loi cated below the drum, a hinged plateat the bottom of the chamber, a second chamber below theiirst stated, chamber, a hinged plateat the bottoinof the said secondchainber, means fadaptedto normally hold said connectedtliroughiods and suit-able intermediatejmeans with Y the said plates and plat-es closed, -a shaft 'carryin'g'the drum, 'cams Akeyed tothe shaft, and pivoted arms adapted to beoperated by said cams to openfthe plates intermittently in succession at predetermined times in accordance withthe movements of th-e drum, substantially as set L iorth.

super-posed chambers, the wall of the cham-vk ber above projecting downward into the chamber belowto form a spout, swinging closureplates for the lower ends of the chamber walls, and regulatable means forl feeding material into the uppermost'chamralityof superposed chambers, a swinging closure plate dat the'V lower end lof each of said chambers, a rotatable drumV in the upper 1 chamber having conipartmentsto regiilate the feed through the chambers, a drum shaft for said'V drum, cams on the drumsliaft, and connections between the cams and the closure y eo: 3. A'fleeding chute comprising a' series of plates disposed to'operate the saidplates in 'i V.swinging closureplates in said chute, and

means connected to and operated by 'said drum rotatingmeans for swinging said clo sure plates. v l

i'. Means for feeding fuelcomprising -a yfeeding chute, a rotatable drum therein, means for rotating said drum, of swingingclosure plates in said chute, and means connected to and operated-by said Ydrum rotating means for swinging said closure plates successively.

8. Means for feeding fuel comprising a feeding chute, a rotatable drum'y therein,- means foi-.rotating said drum, a plurality of swinging;` closure plates in'said chute,

`and means connected to and operated by said drum rotating means for swinging said closure plates successively, said closure f a plurality for the lowerl ends of the chambers, Y

iio

plates being so disposed that the upper Will wdiseharge its load upon and near the axis of the one beneath.

9. A fuel feeder Comprising a casing having a lower Chamber With a discharge open- Valves, a cam acting alternately upon said members to operate the valves, a rotary feed device for delivering material to `the discharge portion'of the upper Chamber, a reciprocating actuator, and means operated by the actuator for rotating said CamV and 15 p said feed device.

In testimony whereof, We have signedour Y naines to this specification this fifth day of Y November, 1924.

HANS o. CLISENBERG. WALTER PIERNAY. [L Sg

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