US1664020A

US1664020A - Automatic discharge valve

Info

Publication number: US1664020A
Authority: US
Inventors: Irvin S Thyle
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-09-08
Filing date: 1925-09-08
Publication date: 1928-03-27
Anticipated expiration: 1945-03-27

Description

March 27, 1928.-

W. A. BRADLEY AUTOMATIC DISCHARGE VALVE Filed Sept. 8, 1925 2 Sheets-Sheet 1 INVENToR @L ,4d/mmf eceas'ed.

aff

March 27, 1928. 1,664,020

' w. A. BRADLEY AUTOMATIC DISCHARGE VALVE Filed sept. a. 192s 2 sheets-snee*y 2 Patented Mar. 27, 1928.

UNITED STATE-s n 1,664,02o5 PATENT oFrlcE.

WILLIAM A. RRADLEY, DECASED; LATII'oI` sAN TRANCIsComALIFoRNIA, BY IRvIN s. THYLR, ADMINISTRATOR, 1or sAN FRANCISCO, CALIFORNIA.

AUTOMATIC nIsCHARdRyALvE. I

Application led September 8, 1925. SerialyNo. 54,892.

This invention relates to valves and particularly to automatic discharge valves to be used on dewatering and decanting machines, thickeners, or any similar machine `in which particles in suspension are to be settled and automatically discharged. The present inventionis an improvement on Va former patent issued to vWilliam A. Bradley, March 24, 1925, entitled Automatic discharge valve, Patent No. 1,530,592.

The object of the present invention is to generally improve and simplify the construction 'and operation of the valve shown in the patent above referred to, to provide a valve which is automatic and sensitive in operation, a valve which yisadapted to be attached to the bottom of a tank used vin connection with dewatering or like ma-A chines, and which will be operable independent of the tank or the contents thereof, Va

valve which consists of a mechanism which' comprises a movable bowl, a valve carriedl thereby, a stationary'valve seat with 'which the valve coopera-tes; and further to provide a valve which depends upon the weightof the contents of the bowl yor'movement and operation. Y f

One iorm which the vinvention may assume is exemplified in the following description Referring` to the drawingsrin detail and I particularly to F ig.k 1, A indicates thebottom portion of a dewatering machine or the like. The bottom portion is provided with a central discharge opening Vand' connected with the bottom of the tank and mounted in alignment therewith is a headmember .generally indicated at B. `v Secured tothe head member are a pair of downwardly Aextending

arms

2 and 3, 'and connecting the vlower ends of the arms is a cross'barV 4 which; supports a iinal discharge member 5. Disposed intermediate of the discharge member 5 and the head B is a floating bowl generally indicated at G. This bowl is cylindrical shaped in cross section and elongated as illustrated. The upper end of the bowl Ais connected-with a head member B through means of a exible annular diaphragm 6 whichV may be constructed of rubber or like material. The f upper'end of the diaphragm issecured to a flange 7 of headB by means of a clamping ring 8 and bolts 9, and the lower side of the 60 diaphragm is secured to the upper end of'.`

the" bowl' by arclamping lring'lO and bolts4 v11. A water-tightjjoint is in this manner* yformed and free movement oftheffbowlin nected to thel discharge member 5; that,is,`a flexible annular diaphragm '12 is disposed bea` tween the bowl and the. discharge member'lo and this diaphragm: is secured at its upper end to the bowl by means offa clamping ring l 13 andbolts 14, while the VYlower `endcofthe `diaphragm is secured to the cross arm 4 or the discharge member 5 bymeans 4of a clampingv 75 ring 15 and bolts 16."

Secured interior of the bowl or formed integral therewithiszapair of cross arms 17. A hub member I18 is formed centrally of'V said arms, anda rod extends downwardly through the hub and is secured therein.

This rod carries a valve ofthe mushroom type such fas shown at 20-in its lower end, and, this valve cooperates with a stationary valve seat member 21 adjustablyrsecred in 85 p cat ed at D.- VThisv armfis supported cnam) 'knife pivot indicated-at25 and it is 'forked as at 26 to straddle the bowl. The opposite sidesof-the bowl are provided with lugs 27 and pins 28 are interposed between the lugs and the 'outer ends, of `the forks, the pins 95 28 providing an anti-friction support which resists vertical movement of the bowl to the least degree. .The arm Dis otherwise provided lwithan adjustable counter-weight E" and the valve 20 may thus beY normally held 100 against its seat 21 with anyl predetermined pressure desired.y

In actual operation, it will be understood that the tank A is iilled with a Ysolution which carries solids in suspension; forins'tance, 105

ally set-tlc to the bottom while the more 110 seat member-.21.

cumulatevin the bowl the weight thereof` gradually increases to such an extent sthat the bowl .overcomes the action'o-f the counterweightwand accordingly .settles vertically in:

" a downwarddirection. The /valveaccordin'g' ly moves away from. the lseat 2l andthe solids are .free tocontinuously or. intermit-y Y `settling tanks comprising a 1 discharge mene berl disposed'below "al discharge opening in'V lla tank andinlalignment itl-rerewith, a ver# '.ti callyV disposedcylindrical"shaped elongated tently discharge :throughthe' member 5. Y

Thefposition `of :theI counterweight is nor- `ma'lly such that the bowl will i'emain'in-,a

raised position so as to maintain the valve 2O iii-engagement with itsseat.vv Thus', if1n`o solids are'enteringlthe tank, .there `will befno discharge. But-'thefmoment solids ybegin `'towenteivand accumulate, aslight additional weight Vwill be obtained andthis is just sufficient ito vlower, the bowl landthe valve iand therebyipermit an automatic discharge. v

The'densi'ty ofthe discharging Amaterial orby adjusting the position-'oi' ythe valve Actual experience proves that it :is possible :to obtain'la dischargevcontainingasmuch as-370 per` cent-` or more ofy solids.

While `certain* features fof the vpresent in-v vention Vare more ory less specificallyillus-y trated, it is to 4be l'understood that various changes in form `iand proportion i may ibe resorted 4to within :the scope of the *appendedclaims. Itis similarly-to be understood that thev materials and" finish Vof the several parts employedimaylbe such asi/the experience and .judgmentrfo'f 4the *manufacturer may dictate or-varioususes2may demand.

Havingftlius described vvthe invention, what is claimedland desiredtofbe secured -byLetters. Patent'. is:

1. .Anaiitomatic `disch-'arge mechanism for settling tanks, *comprising aV discharge Emem` ber spaced from and disposedbelow the tank,xafbowl below the tank and interposed between th'e tank andthe discharge kmember fso `that `settling matter from-the tank is permitted :to ,settle in vthe lbowl andllater dis-- charge into the discharge member, `avalve carried"by' .the lbovvl and normally forming a 4closure for the discharge member, and means :for permitting vertical movement of the val'v'efl'and the ybowl when a predeten mined amount ofmatter has settled therein to permit discharge of settlinginat-ter'.

2. VAn {automatic-f discharge lm'e'ch'ani'sn1"fo1 y taken care of in the present settling tanks comprising :it-di-sch-a-rge-niem-V ber `disposed @below i, a discharge openingl'in a tank and in alignment therewith, a vertical- Y ly disposed cylindrical shaped elongated -bowlinterposedbetween the discharge opening "andthe discharge member, a flexible 'conduit `forming a connection between the discharge opening in the bottom of the tank andfthecupper endzo-nthe bowl, a second flexible conduit forming a connection between 'thesettlinginatter 'from the ftank to'lpass i"to the discharge member, and :a valve .carried Iby '.theb'oW-l andfnormally iforminglafclosure `forr Y lthea'discharge:member'.` Y t 3. An i-'automatic"dischfarge"mechanism .for

bowl 'interposedbetwecn'the-'discharge open- :ing-'fand :tliedischarge member,:a flexible con-f charge'openingfintliebottom of the tank and conduit. ifoinnings);l a .connection `between .the

ber, csaid .bowl l and 'conduits permitting ithe settlingfmatter from the tank to :pass to the discharge-1member,1and'a valve CarriQdb-ythe bowl and normallyfformingfaclosure Yfor the -discharge-me'mber, said'fflexihle conduitsl permrtting'free 'verticali1novement`=-of1tlie bowl and .the 'valve., and means-*supporting the bovvlifand'b'perm-itting down-ward `movement-of `the bowl and the Valve when the pi-'edeterduit forminga connectionl Vbetween the dis-` thefupperendof theibowl, aV second flexible 90 mined Vqliantityoif settling matter has fc'oli? "An automatic fdisch'argeime'chanism for 'settling tanks comprising a discharge memberdisposed I'below v=a discharge "opening in a tank .a-ndvifn alignmentftherewith, a'vertically .disposed Vcylindrical shaped elongated' bowl interposed between ithe disch-'arge opening and'ithe dischargemember, a flexible 'fconduitforming a connection between the disclrargefopening-in thebottomfof the tank Y `andthe:upperfendfofthe?bowl, aL secondflexible conduitfforming=alconnection between member, said l"bowl and conduits'permitting *the 'sett-lingfmatter Ifromgthe Etank to pass to -thefdischar-ge*memben and *afvalve carried Bradley,- Deceased;

.Admmgmmiofffhaismf@ of William A,