Патент USA US2408131код для вставки
.Sept. 24, 194.6.- Y a c. G. vOKEs ET AL . I 1 2,408,130 FILTER- CLEANING MECHANISM Filed Sept‘. 1, 1943 _ I ( ' 2 Sheets-Sheet 1 - Attorney V Sept-24,1946. ' , * ' . ¢._G.'vo-KEs Em FILTER CLEANING ‘ - 2,408,130 MECHANISMv Filéd Sept, 1, 1945 2 Sheets-Sheet 2 ‘ FI/G. 2. . . All/17].: §m\\\\\_ __ 1 7 % Ba t , - Inventors‘ ' Attorney ‘ ;-~, ‘ 2,408,130 PATENT’ OFFICE * i ‘ ‘w ‘ “ 7 . ' 2,408,130 FILTER CLEANING MECHANISM Cecil Gordon Vokes and Edward Arthur Stokes, ' ‘ London, England; said Stokes assignor to Vokes " Limited, London, England " Application September 1,1943, Serial No. 500,872 , ' j . . ,In Great Britain September 17, 1942 o ‘ 6 Claims. (01. 210-116)‘ The above and ‘other parts of the invention are embodied in atypical example which will now' be described with reference to the accom Filters in which a considerable surface area of a filtering material is ico‘ntainediin a relatively small volume are commonly employed.‘ There are, for example, well known forms of ?lter with panying drawings as applied to an oil ?lter of deeply'corrugated orrgr'ooved‘ or pleated screens; oftenv of p‘orous'textile materials suitably mount porous ceramic material. The parts of ‘them vention for which a monopoly is desired are those set out in the claims. ed and vpos‘siblyfof ‘star-shaped "cross section or of 'concertin'a form." ‘ ' i " ' ’ In the drawings: " H The ipresentYinventionprovides a construction in which discs of rigid (as opposed to de?nitely ?exible)» porousmaterials'are assembled to pro-. duce "a'?l'ter'unit'having hollow ?ns with deep 10 capacities. . ' ‘ ' ‘ " ' ‘ ’ . . V material, showing also how the cleaning’ knife _ _ ._ 1 Fig. 3 is a sectional, elevation of the disc in slightly modi?ed form, 15 of surface scraping when the pores become clogged. Moreover any ‘suitable number' of discs can be assembled together to give ?lter packs of varying V Fig. 2 is aplan view of a disc of porous ceramic is arranged, spacesbetween them. ‘Such a'construction can utilize effectively porous‘ ceramic or like mate rials, giving "easy replacement and the possibility , Fig. 1 is a sectional elevation, ' ‘ ' 17' ' '. Fig.4 is a perspective View of one of the clean ing knives, '7 \ ‘ ‘ " ' Fig, v5 is a broken perspective view partly in_ section showing two discs of't'he preferred form I in superimposed ?lter forming relation. ' ‘ It is preferred to‘ use annular unglazed ceramic discs with a central 'openingto be superimposed ' in alignment; Each disc; which is‘ of. appreciable thickness, is formed to provide an outer periph eral .edge' or' surface and. anfinner peripheral Q Theimproved ?lter is made up of a plurality of annular discs 25 of unglazed porous ceramic material ‘arranged in superimposed contact in axial alignment; Each disc is formed on its opposing upper and lower faces 26 and 21 with‘ edge. or surface. The‘ outer and inner surfaces 25 of the disc as saidv disc ‘ispositioned in ?lter as senibly, are each formedyinline with the outer and inner peripheraledges; with ribs extending from such upper andlower surfaces, and for a, short distance fromthe inner and outer:periph-‘ 30 eral edges.‘ The ribs at the outer peripheral sur face are ‘of slightly greater thickness beyond the ' upper and‘lowe'r surfaces of the disc than the ribs at the inner peripheral surface. _The outer annular abutment ribs I at the outer margin of such faces and annular abutment ribs 2 at the inner margin. Each disc in the form shown in Figs. :1 and 2 is formed with an annular channel 3 opening‘ through the outerperipheral surface 28 of the disc and terminating short of the inner peripheral surface "29. The discs‘are each formed with a central axial opening which when the discs are assembled, provides a central bore 3a extending vertically of the superimposed discs peripheral surface 'of each disc is formed be 35 and de?ned by the inner peripheral surfaces 29. Thediscs are held in assembled relation between tween the upper and lower surfaces of that disc upper and lower plates 4 and 5 and the discs with a groove or'channel extending completely are held'by the plates to receive in the central around the disc, opening at its one end through bore a tubular element 6 having an exterior the outer peripheral surface but not extending to the inner peripheral surface. . The ribs on the 40 diameter less than that of the bore. The upper upper and lower surfaces at the outer peripheral edgeof the discs contact with each other when théidiscs are in filter servicepositions, and thus separate the upper and lower surfaces of each disk from that of'the ‘adjacent discs to thus de?ne. what may be termed as inner channels between the discs- .Each of such innerchannels are thus end ‘of the tube 6 is provided with an enlarge ment 6a having a bore in alignment withthe bore of the tube and exteriorly threaded to en gage an annular'wall 60 which communicates with the outlet l3 of the ?lter. The enlargement 6a and tube S‘may be made as a single element closed adjacent. the outer peripheral surfaces of the disc‘ by the contacting outer ribs“ The inner ribs, either by reason of their adjacent edges being spacedby forming such inner ribs of less height than the outer ribs, or by channelling or buttressing such inner ribs, afford an opening leading from an inner channel through the inner and to the upper plate, 4. The lower end of the tube 6 rests ‘squarely on the lower plate 5 and is provided with a threaded pin 6b, preferably peripheral edges of the disc. ’ or‘ asindicated in Fig. 1, welded to each other welded or otherwise secured in the tube and pass ingthrough the plate 5 and secured by a nut ID to provide a rigid ?ltering assembly which, how ever, may be easily disconnected for change of 55 discs at will. . 2,408,130 3 4 The annular channel 3 in each disc provides at the inner peripheries of the discs being formed a large material entrance area for ?ltration pur poses while the annular ribs l and 2 provide between the discs, an elongated relatively nar rower channel or hollow 20 by which the mate to provide free communication between the cen tral opening formed by the assembled discs and spaces between the discs de?ned by contacting abutments at the outer peripheries of the discs, rial ?ltered through the discs is delivered through openings 2a, Fig. 5, to the bore 3a of the as sembled discs and from the bore through open ings 2b in the wall of the tube 6 and upwardly through the bore of the tube to the outlet 39. The inlet Id of the conventional header .de livers the oil to a space i5 surrounding the wall providing a channel opening through‘the outer side wall of the disc to provide entrance areas for the fluid to be ?ltered, and means arranged in the central opening'of the assembled discs for connecting .said discs in assembled stacked rela tion and for‘ receiving ?uid delivered to that 60 and from the space 15 to an annular space Hid opening'for discharge, between the periphery of the disc assembly and a casing II, or as clearly shown in Fig. 1. A cranked member i6 passing through a suitable gland or packing'l‘l at the end of the casing carries cleaning or scraping blades l8 (prefer ably of springy metal) extending into the spaces each disc being formed with an annular recess .3. A ?lter unit made up of a series of independ ent discs, supported in relatively superimposed relation, each disc having an inner peripheral surface de?ning a central opening, each disc hav ing an outer peripheral surface de?ning an an nular outer margin with the said outer margin 3 between the hollow ?ns. The cleaning blades 20 formed with an annular channel de?ning a ?lter 18 .may be welded or otherwise conventionally entrance channel with the said channel extend secured to the member 16, or, if preferred and ' ing through the outer peripheral surface of the as shown in Fig. 4, the membermay be provided with lateral rods [8’ with which the cleaning disc, toward, but not through, the outer periph eral surface of the disc, each disc being formed blades are connected. By rotating an external 25 in its upper and lower surfaces with elements handle or knob Hi the blades can thus be caused providing axially extending ribs adjacent the to throw out the sludge from between the layers outer periphery of each disc and further formed of ?ltering medium and also to‘scrape the outer with additional axially extending ribs on said surface of the ?ltering material and preferably upper and lower surfaces adjacent the inner pe remove a small clogged layer and expose a new 30 riphery of each disc, with‘suchadditional ribs having radially extending channels therethrough surface, Obviously as clearly shown in Fig. 3, the discs to a?ord communication with said central open need "not necessarily be made in one integral ing and the annular space between said ribs, the piece; other assemblies of discs or various forms ribs at the outer margins of the superimposed to give the hollow ?nned construction with the 35 discs abutting when the discs are assembled, to ?ns extending either outwardly or inwardly can provide a seal at one end of an inner channel be devised without difficulty within the under formed between approximate faces of adjacent lying ideas of the invention, and the ?lter can be superimposed discs when discs are assembled, used for various fluids. means to direct a ?uid to be ?ltered, to the en Where the discs are made in two parts the 40 trance channels whereby the ,fluid is directed plane of separation will preferably be as indicated from the entrance through the .body of the discs by the line 3a, Fig. 3 whereby the upper and lower and into the inner channels between adjacent halves are identical and, when positioned re discs and to the central openings of the discs versed upon one another, as shown, coact to form when assembled, and means extending longitudi 45 nally of the central opening of the discs to receive the groove or annular channel 3. We claim: the ?uid directed into said central opening ‘from 1. A ?lter made up of a plurality of independ the discs and to direct the same outwardly be ent elements assembled in superimposed relation, yond the discs for discharge. ’ each element being of rigid porous material in 4. A construction as de?ned in claim 3 wherein annular form with a central bore, the meeting 50 the inner margin of the discs forms a receiving faces of the elements being each formed with bore for the ?ltered material, and wherein said abutments adjacent'its inner and outer margins, means extending longitudinally of said central the abutments at. the outer margins of adjacent opening comprises a tube open to said bore for elements continuously contacting to form a discharging the ?ltered material to an outlet. closed space of material area between abutting 55 5. A construction as de?ned in claim 3 wherein faces of the elements at one end, the abutments scraping elements are mounted in the entrance at the inner margins of the elements being trans channels of the discs, and wherein means are Versely apertured to provide communication be provided exterior of the disc assembly for moving tween said space and the central bores of the said scrapers throughout the respective channels elements, the outer margin of each element be for cleaning the same. 6. A construction as de?ned in claim 3 wherein the entrance channel of each disc is provided with a spring scraping blade and an operating member connecting all such blades for simulta neous scraping operation in the channels for tween the faces thereof being formed with an an nular recess providing an entrance channel for ?uid, 2. A ?lter unit including a series of superim posed annular discs of rigid, porous material, each disc having a central bore with all bores aligned in a series of discs, the meeting faces of the discs being formed with abutments adjacent their inner and outer peripheries, the abutments cleaning purposes. CECIL GORDON VOKES. EDWARD‘ ARTHUR STOKES.