US1988473A - Hopper - Google Patents

Description

Jam 22, 1935. 1 s, BENNETT 1*,7988,473

HOPPER Filed Dec. 1e, 1951 2 sheets-sheet 2 lagwuw Patented Jan. 22, 1935 i 11,988,473 i HOPE-ER i vcorporationof Pennsylvania w v .I Y v Application December. 16, 1931, Serial No.5`81,436

.I This vinvention relatesitojfurnac apparatus.. and Vrnorerparticularlyite such appae ratus ofra type employingra sluice zoriequivalent conveying means, forzconducting the ashes `to a remote'point of discharge. Y y

One object ofmyfinventionA is. to provide novel and improvedmeans'V for feeding the ashes `to the sluice at av-,substantiallyuniformrate` ,y

invention'. is vitc` ,pro-

vide a hopper' oflthe stated. character wherein the tendency'of'the Vash-to'"avalanchegtoythe discharge is substantiallyeliminated and'avoided. A further object ofthe invention is to provide a hopper of,v novel. construction `incorporating highly efficient crushing andgdischarge means. A still further object of the inventionA is to provide anovel:assemblyof hopper, and sluice orother ash 'conveyerprovided `with novel. means for closing the discharge opening of said fhopper. Still another'vobject 'of lthe invention 'is to pro videin an ash disposal system an assembly comprising `afhopper and a 'sluice or'equivalent conveying 'means wherein provision is A-made ffor observing the flow 'of'gashgfrom the hoppergpto the sluice. f y j.

Another object of the invention is to Vprovide injanash removal system a hopper having feeding and crushing rolls provided with novel cooling means.

A further object of the invention is to provide a hopper of the stated character wherein provision is made for utilizing the huid-cooling means for the said rolls for spraying the ash content of the hopper.

The invention further resides in certain novel structural features and arrangements hereinafter set forth and illustrated in the attached drawings, in which:

Figure 1 is a transverse sectional view of a hopper and sluice assembly made in accordance with my invention;

Fig. 2 is a side elevation and partial sectional view of the assembly;

Fig. 3 is a fragmentary elevational View showing the roll-actuating mechanism, and

Fig. 4 is a side elevational and partial sectional view of the mechanism shown in Fig. 3. n

With reference to the drawings, 1 and 2 are the lower portions of the side walls of a hopper, in the bottom of which is mounted for rotation longitudinally extending rolls 3 and 4. As shownV in Fig. 2, eachcf-thesejrolls is supporteciinbear-- ings 5 and 6 inthe end Walls 7 andv 8 of the hopper and in 'an intermediate bearing 9 formed in ar -beam Jv11 extending transversely across the bottom of the '-hopper.v As illustratedin'Fig. 1, thabottomV wall ofy the hopper is ,formed by'ga pair of curved plates 12 'and 113 `which .extend inwardly of the hopperffromthe lower endsof fthegfside walls -1 and 2, the curvajitureV of rtl'iese platesconforming .ifnoregorv less closelyV to the peripheral curvature of VVthevrolls 3 vand 4. IY The inner orlower edges ofthe plates-12V and 13 terminate in each instancev short of thev longiftudinallcenter of the lbottom ofthe hopper and .forml therebetween a longitudinally1 extending discharge opening 10, which ini-the present in-f stance directly overlies a sluice 14. Platesl12 and 13 'may rbeprovided with- *grooves or teeth, if idesired,- to facilitate crushing clinkersg-and vlarger ash particles. y Y -v 'I'hevfplates 12 and 13 are secured to or form a part in they present-instance of pedestal brackets 15 and 116 which-support the walls ofthajhopper properIand which restrupon a suitable 1foundaff tion 17. The :foundation inthe 4present instance is shown as vof concrete,l and the channel forthe sluice 14 is formed rwithin this foundation. `Be.- tween the bottoms of theplates 12 and lyandl the vbottornsof thebrackets-l and 16 areformed spaces 1-8 .anddQat each side of Vand below-'the I disharge` opening., access to which space isprovided for by detachable closures and 21 at the outer sides of the pedestal elements 15 and- `16, respectively. By removal of these doors, in-

spection 'of the discharge from the hopper to the sluice 14 is possible.V Pivotally suspended from the lower end and bottom side of the plate 15 is a gate 22 which preferably is operative from the exterior of the hopper assembly to close theV discharge opening 10, the closing position of the gate being illustrated in broken lines in Fig. 1. As illustrated, the rolls 3 and 4 are provided with radially projecting teeth 23 and the plates 12 and 13 are spaced from the surfaces of the rolls a suiiicient distance to allow adequate clearance therefor. t

Extending longitudinally of the hopper above the rolls and on a line intermediate the axes of the latter is a beam 25, this beam being supported at the ends upon brackets 26, 26, secured to the end Walls 7 and 8 and intermediate its ends upon a bracket 27 supported on the transverse beam 11. The beam has downwardly diverging sides terminating in upwardly and outwardly extending flanges 28,-these flanges forming a supshafts 31 is provided with a spur gear 32 and;3 3 respectively, which intermesh and thereby op:-Y Each of the' shafts also carries a ratchetwheel, 34 and 35 re eratively connect the two shafts.

speetivevly, which enact with,inl-wils 3 6V amarre;

spectively mounted upon levers 38 and 39 loosely4 mounted 'upon the respective shafts. The levers 38 and 39 are connected by'alink'4'1 andthe yle-"H ver 39 is provided with an arm 42 for connection thereof with suitable driving means whereby the said levers'` maylbe oscillated'. j--The pawls 36 -and 37 operatein opposite directions, andsince the movement of each rroll -is -imparted- 'to 'the y other' through the gears 32`-and 33,'oscillation of the le'- vers 38 and 39 results in a continuous movement of the rolls in `theopposite directions Aindicated'. In order to regulate the rate'of rotation of' the rolls, I provide inthe'present instanoecam levers 43 and 44 having effectivecam portions adjustable into the paths of the pawls 36 and 37're`s'pectively,-these cams functioning to elevate -the`pawls from the ratchet" wheell at predetermined points inthe stroke, 'depending von the adjustments "of the said levers 43 and 44. The levers 43-and 44 are mounted on the respective shaftsfand are-adinstable'thereon-Q i j f f As illustrated, 'thefrolls 13' and 4ar`e `l`1oll'ow,as also are the shafts at opposite' ends offthe rolls which Vproject through theendjwalls of the'hopper. Pipes 45 and 46 extend'into the `oute'rwen'ds y of "the shafts f of'eaoh-of -the rolls and suitable packing 'boxes 47v are vcarried by l eachshaft throughl which the said' p'i'pes 45l-and 46 vextend and whichl seal the joints between' the said pipes `and the hollow roll shafts. The pipes 46 extend upwardly to opposite s ides'v of the hopper and communicate through the 'side walls 1 and 2 with Vsuitable nozzles at .the inner faces` of said wa'lls. The pipes 45 are connectedto a suitablesource of fluid'supply whereby water or other uidgmay be passed into andV throughthe` 'r`olls'` 3 and'4 and feeding means for the ash content of the hopper tothe discharge port 10 and to the sluice 14; and by 'cooperation with the plates 12 and 13 func- .tionalso as crushingl means for the ash preventng passage of large clinkers and ash particles to he sluice. Theentire ash content of the hopper l 1s deflected by the deiiector 29 to the outer sides ofvv the rolls 3 and 4,- and movement of the ash ito the, discharge opening 10 is directly controlled by the rotary movement of the rolls as described. Avalanching of thev fuel tofthe -i discharge opening of the hopper is'prevented, `and the constructionprovides kfor a regulatedv and substantially uniform dischargeof-'ashes lfrom the hopper to the sluice. The construction is'particularly desirablefwhere a sluice or other `conveying means is used for `removing the ashes discharged from the hopper, since eliicient operation of this character' of device is largelydependent upon a uniformI feeding ofthe ash or other material thereto and upon a substantiallyuniform consistency in the material discharged.

If'claim: y f i f 1.v AA hopper comprising a discharge opening, and avroll for-*controlling passage of the contents of the hopper to said opening, said roll being hollow, nozzles in the innerside of the walls of said hopper, means for passing a fluid cooling medium intooneendof'said'rolljand a duct extending from the v'opposite endof said roll to said nozzles.

2. -A hoppercomprising a discharge opening, 'and ya'rollf-for controlling passage of the contents of the hopper to said opening, said roll being hollow, nozzles in thel inner side of the walls of said hopper, means for passing a, fluid cooling medium into one end of 'said roll, a duct extending from the opposite end of said roll to said'nozzles, and ports saidroll permitting discharge of a portion of said cooling medium into the bottom ofthe hoppe1 L A JOSEPH S. BENNETT.

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