US1518116A - Suction box for paper machines and the like - Google Patents

Description

De@ Z, 1924. L@ y M. WENZEL. sUCTIoN Box FOR PAPER lMVACHNEs: AND THE'LIKE Filed Jan. 9, 1924 ashetsmsheet 1 M. WENZEL. n

' SUCTIONBOX FOR PAPER MACHINEVS AND THE LIKE Filed Jan. 9 y l M. WENZEI. l

sU-GTIQN Box FOR PAPER MACHINES AND THE LIKE 5 ShetsSheet 5 Filled Jan. '9, j MM M WETYEL, F TWLDENSTEN, 'KREIS EITTERFELD, GERMANY.

SUT'E BBK. FR @APER- MACHINS ANI) THE LIKE.

.duplication lled January 9, 1924. Serial No. 685,247.

' To a?? 'whom may eonem.'

'thus preventing" the passage of air Ee it known that l, MAX Wnirznnn citizen of tire State of Saxony, residing :it Rittergut Muldenstein, No. l in Muldenstein, Kreis Bitterfeld, Germsnv, beve invented certain new and useful improvemenm .in Suction Boxes for Paper Machines and the like, of Wliicb the following is a specification, reference being` bed to the se compenying drawings.

My invention relates to n suetion.-box, in vvl'nicliin tile upper longitudinal portion thereof are mounted rolls, arranged 'for carrying the Wire of tbe paper-making maelaine out or frietional Contact with any 'port of the box; and-tbe object ofthe rolls thus arranged is to lessen tliewear on ,the 'Wire in its passage' over tbe suction-box, and eonsequently to lengthen the life vof said Wire. ln s; device of'tiiis kind it is e problem to nd .n suitable device 'for excluding the pressage of sir between the box and tbe rolls carrying tile Wire. The object of tbe presenti-invention is ,to provide e joint between tile immovable pertso the suction-box and seid rolls, of sucient Width that water edliering on seid rolls or slammed up by the' ends of said rolls'is drawn in tbe joint for the purpose of sealing and rinsing the joint, -und tbe stopping thereof with pulp.

The invention consists in the features or construction and combinations of parts hereinefter described and specified in the claims.

ln 'tbe accompanying drawings, illustrating the preferred embodiment.4 of my invention:

- Figure l sliows certain parts in a side elevation and other parts in a vertical cross-sectional viewof the suction-box: Fig. 2 shows e central vertical longitudinal sectional viewtliereof, partly in section on line a a and on line I) o," end Figs. 4 'and 5 are vertical cross-sectional views on an enlarged scale of detached details,

Similar numerals indicate like parte in tile several views.

Referring more )nzirticulerlyl to the dreivings and more particularly to Figures 1 and 2, wherein lieve shown .my improved suecionfoox, there is in this instance, tlie com- 4ergert-ien et unite. @n eecliside or rtbe deelde beads and tbe travelling Wire.

tbe pepeihm'aking machine, frames l are arranged for supporting tbe suction-box, the snid'rames beiner either e part of the frame of the paper-making machine or only'a part or tbe suction-box. Between said frames l, slieets 2 are arranged Willich are .screwed on each end to the frames, tbe said sheets separating tbe singleunits of suction boxes from tlie suction rooms and tbe atmosphere. `Tile end pieces 8, being secured on tbe frames l, are preferably composed of a. lower part and en upper part, which are divided in the central plane of tbe Wire-earrying rolls Il, thus to facilitate tbe putting in of said rolls. The end pieces serve to close the space between und around the ends of the Wire carrying rolls 4l. tbe frame l and the wire 5. The 'closure is created by means of e joint, left between the surfaces of the Wireearrying rolls and tbe adjcent parte of the end pieces, and Water, which is dammed up before tbe ends ,of the rolls, for exemple, by means efe vertical Wall of the end piece, is drawn into tbe joint, in order to eel and', to rinse the joint, thus preventingr je pas-- sage of air und the stopping Witlilpulp. The surface of tbe end pieces opposite tos() the surface of tbe Wire-supporting; rolls, are preferably fitted with a nonrusting materiel, as, for example, rubber, wood, metal. Suppor-ting bearings 6 are preferably secured to the flanges of the end piecesf or tothe `frames l. TbeWire-cerrving rolls flerey mounted in said supporting bearings 'for revolution with tbe traveling,r machine-Wire. Fitted in between tbe Wire-carrying rolls 4 and tlie macliinewire 5, near each end of tbe box mounted on and guided in lie end pieces' 3, are movable deelde heads 7 for adjusting the length of tbe suction part of' the box to the Width of the Web oi paper 8, which is being made. The upper surface 95 of these decirle heads is curved to conform to tbe` adjacent bend 'of travelling wire, y

A.which segs-between the Wire-carrying rolls duc to the atmosphere 'pressure againsttlie Wire. The purpose of tlie'vbeadsn' is to provide an easy bearing surface f'rwlie, 'Wire blanket or, more preferably, to create a joint between tbe curved upper surfacexof The decirle heads are operated by means of adjusting screws 9. Water ie preferably and the 'rolls hyineane of the hollow shaft of the deelde heads 7, which, Water will escape through the ports' 10 and may serve for' rinsing the joint and the opposite surface of the rolls. The deckie head should be mede peferably of a suitable noniusting material.

The tightening ledges 1l extend along the ii'olis from one end piece to the other and border tightly on the 'saidend pieces Sfeeeured to the longitladinal sheets 2, 'forming the joint 'for tightening the suction room against the atmosphere and also separate the single unitsof the euetion-box.' The tightening ledges may be 'formed in a variety of Ways so as 'to adapt the saine to varying v eonditione. if the difference of. degree of vacuum loetweentwo unite of suction-box or between the suction-rooms and atmosphere is very great, the tightening ledge is preferably curved to conform to the .snifaee of the edj'ecent Wire-suppoting rolls foithe of ei'eating e broad joint 'to pievent the passage of ein `This modiiieetion is shown lay Figline li. l' the difference of degiee of veenuni lseoife and behind the joint ie not relatively greet, the tightening ledge may also be Stiaiglit and even-surfaced against the rolls, shown by Figures 3 and 5. l; else prefer this inodiieetion so es to pre "vent Contact between the carrying rolls and the opposite surface of the tightening ledge,

though the said'i'olls may sag somewhat in `the event the rolls 'ere made for Wide maeliinee. y

The surface ofc the tightening ledge, which is turned to the i'oll is preferably ttecl with engr suitable non-instingi material '(iubber, metal, Wood and the like) oi' 'ie composed oi e etiip of tine meteiial, shown 'by Fignite lint the g'oint is not Wide enough, Water eennot rinse' through the joint, .end'pulp l will vetop it eeneing sueli frieten as to diseetiouely etard oi" stop the rolls. But also, if the joint-is too Wide, air is drawn into the eviction @ooms mdv e large vacuum ereeting eppnnetne le ln eceeseiy so that the airdoee net interfere with theeuctionand its successjnl epeeetion upon the paper in lthe Wire.

vlne bottoni pieces i2 :are arranged under end between the namee and the sheets 2 .end may be secured tothe trames and sheets by any convenient meenseor example, ley eeen'e. The pipes ,13 nndli for i'emoifin'` weten end ein efe preferably seperated and may. be connected with said botmm piene..

of the Wire traoted 'Weten cannot drop into the enlienet pipe. Preferably/.the plete dips into the Watein with its longitudinal edges, which eine curved down, that it will forni' a channel wey to conduct the air out of Contact with 70- the dropping Water. The pipe- 13 for oon-' ducting the extiacted Water is arranged nndeiT and outside o' the bottom piece and may loe foicmed to act in that ease like a syplion 18. flllie outside plate i9, which forms the 75* air exhaust pipe in connection with the het tom. piece, may loe strengthened against 4the atmospheric pressure by' tlie eti'eneie 20.

lf a vey higli'degi'ee of Vacuum is eniployed .in the lest unite of suetionbon, it "30 will canse ls'neli en atmosplietie pifees'nie-o against the Wire, that the trevelling "Wire sags deeply between the Wiresupporting' rolls and it is desirable in this inetanee'to arrange snppoiting /letlis 2l. ln orden tiiet 95 the fpi'esstnC-vl end. consequently the iietion i passing one? the suppozting lathe may he reduced to eininimuin, the nipper edges of seid enpportingletlie eine eiranged pieieienly under the level of the tog` 30 of the rolls. The eiippoiting lathe are een ried by one oi more supports 2Q, Wliiell are mounted on the sheets 2 oi' on arme 23 se! cured on the-Sheets 2. The seid lathe may be made of sneh a meteriel as is beet adept- 95 ed to save the 'wire mesh blanket ttor enemple it may lie Wood, leather, i'uhlie or some relatively soft materiel.

lf e very high degree oj2 vacuum is i'equired in the last unitsof suction-box ani90 other modification may be arranged behind the last roll, which includes e suction-ibex 2li of common construct-ion connected to, as shown, or sepeeted from the unit andiitted with Woodencovers:A corresponding .tothe le., present practice. in this ease the supporting lathe first mentioned are not necessary.

Any desired numberjof suction-boxes or unite of suction-boxes can he arranged upon one'paper-making machine or any desired -ll'iL4 number of rolls in one boitier eieetually removingthe Water on, the web of paper; i

.The vemotion-bon neay be' .arranged with Wheels or carried laysany suitable e,} pzii'atns to `facilitate removing when ollanging wire. 11i

Whatllelaimier .f 'i

1. A `suetiam'fnbzpompei, ingv supporting trames, sheets transversely fzrenged'loetween lsaid frames, bottom pieceeexranged between seid irameeanel Sheets', Wine-supporting iolls *1% carried by seid` .'reinee, end .pieces mounted i v on seid frelmeeantl closing the e` ace between the ends of seid rollsendisai iiemeeqloy leaving a iointpegeinettlie etljeeent sides of, all oi said iollfs,"'deelle head's arrangedto- 'L25 slide `on said end pieces between seid rolls. near each endthereof fof adaptin the Working length of saidlooX to the Widt of @apen tbeing .inadeg tightening ledges resting on, N ,eeld. Sheet-s, ned extending elong eeidenllf, Se@

,ezienie on said end I`'neces emi ieeving 2. jeini; :igaineg 'the adjeeen; eneee of die Wire suppoiing 'ciie, siii el eeici joins being Wide enough w be en@ iinee by watei buis nee;l enqngb (Le make difficult the passage of ein l 2. A suctionebox comprising supporting "frames, sbees teneverseiy arranged between said frames, boiioin pieces arranged between seid :z'amee and siieeze, Wiresupporting sind frames, end pieees,

relis carried b mounted on said 'ia'mes and ei-seing the space beween the eniis osaieif miie anti saiei frames by leaving' e joint against the eeijacena sides of eli of seid relis, iieekie beads amanged te siidie en seid end pieces between said miie near each enti thereof fois' adapting the working iengb of said box to the Width'ef paper being made, tightening leges Testing on Sei snees, extending aiong seid relis ioin one sicie to ibe other, boreied tigby en Sei end pieces and leaving e, joint against the mijaceni sni''ace of Wire-suppoi'ting miie, enti pieces having vertcai Waiie Wbeiebjf tbe Wate for sealing and rinsing the joints between seid end plee-ee and saici foils is zian'imednp before the ends of seid oiis.

3. fi eucienbex cempi'ising 'Suppoxng frames, shees t'ensvereeiy ei'angeci betwee said frames, beom pieces :nrangec'i between said 'frames ami sheets, 'Wireeuppeiring rolls carried by said frames, emi, pieces monni'eci on ,seifi ficanies and closing the space beween ehe ends of saifi foils miei Said frames by leaving e. jeini'. agains the adjacent Skies of ail of seid miie, decide beads arrange@ izo slide en said end pieces between said miie near each end thereof for aapting ehe Werk 'mg length ci sai box the Wifieii of einer 1 u l being made, igi'itemng ledges resting; on said shees, exenfiing along sind miie imm `one side 'io the ciber, bodered tigbiy on said en pieces and ieeving a join egeine the adjaeenf; sui'eee ef wiie-sujiperting rolle, the euxfaeee of igbiening le'ges and saifi end 'pieces edjeining me wire-Sup periing roiis being of e, nen-usiing me eliai. eueionben comprising eupporing: frames7 shea e. izzene'eeiseiy be tween ames, beinn pieces arranged between seid infinies emi siieezze, wife-supporing' miie eeriefik-by iemee, emi pieces monn'e en fiemes and dosing; i ende of said relis and miie, deekie e e en end. pieces be. tween'. Semi 'mile "wir Ci iieieof ffii"v edepiing Werl se,

the Width ef {ejse eg'ee nesting se said mils from one eide ite ieied ghtly on en@ ing n joint against the adjacent sui'fece of Wire-euppmting TOUS, pipes 'foi' removinglr water and ain Said pipes being separated from ens-n (ber, and combinedA with the bottom plaie7 the :iii' exhaust pipe being a1'- iunged pm'tiy inside amifipartiy outside of seid betteln plate and having the upper in-l side end open, and. terminating above the ievei of the extracted Waiter, and the Water exhaust' pipe being arranged outside of 'said bottom plate, anni having a syphon action therein. j 4

A suction-box Comprising supporting rznnes, sheets transversely errengefi between said frames, bottoni pieces ai'ranged between seid frames and sbeetea Wiresupporting relis carried bj1 saisi. iamee, enti rpieces mounted on said zmnes and ciosing ti'ie space between the ends of saioi foils and said fi'aines by leaving a' joint against the adjacent sides of 'ali of seid rolls?, decide heads arianged to eide on seid end pieces 'between said relie neer each end thereof for adapting the Werking length of sei bex to the width of pepe? being medetigi1;ening ledges resizing en eei sbeeze, amending aiong said. foils Einem @ne eide to bile' einer bereoi, bezdereri tightly 0n. vanni 'enfii pieces and leaving a joinl egeine; libe edjecen: sur

-face of Wire-su J @r-ine' Feile e inte beine L3 b arranged beve tbe insife open end of en air exbeus; zincidiplping into he zweier with its iengif'mcinai eciges, seid edges being curved fewnwei'ij7-c 'ferm e' channel wey io conduciiie ein one of Geniee/with drop ping Wael.

43. A suenen-bex eempmsmg Suppmting iframes, sheets t-mnsvenseiy eimng'ed beine/'een said frames, bottemp'ieees arranged beiween sani. frames anti ebeeie9 W1i'e-euppoing rolle carried; by said frames, pieces inounte on seid frames closing; ne space between eine e' maid miie and ,Seidl Im-,mee by leaving e gein?. ble Mja/eene sides or ei ef saisi reife; eieeiie beads errenged te slide en eei emi gieeee between seid relis each emi i'ieree fee adapting @he Werk ini; .iengib ei bex te ne Width of peper being med@ 'igeening iegee 'estin en .ea-id 'abe-ebs, eezening eieni Seid y.relie inem one eide be iie Geber, befreefi en seifi eni. pieces @mi leaving e joint ageine fthe adg'nt sides @-2 Mui said relis.J decle tightly "on said and pia'ces' and aavng a heads @imaged slide-0n said and pieces y.joufrz against the ajacenr, surface of Wwe zetween said ms nem @zich en@ thereof fof 'supper/ting rolls, and sa Suction box' arrange@ l@ adapting; h@ Working enggh of Sad box fao behind the last Wief-supportng rol] and Sine Wcfh o pape? oe'g" mae, tightening connected tigh'ly with he pSaid Sheets and ledges fasting on Said shees, amending aeng tie said end pieces, said rofs from one side the othe, bordee MAX 'WENZEL

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