US1071784A

US1071784A - Valve for controlling the flow of thick pulpy material and the like.

Info

Publication number: US1071784A
Authority: US
Inventors: Edward Hoit Nutter
Original assignee: Minerals Separation Ltd
Current assignee: Minerals Separation Ltd
Publication date: 1913-09-02
Anticipated expiration: 1930-09-02

Description

0o 1 9 1 E y K 2 I L l E p H mm T D d N m m w T m m l E T v Yn P9 Ll I EPA EKm TED THD UTE NEH OF HWw 1 '01 in a m. H TN 0 GA N I L L O R T N w I R 0 8 n 3 0 UNITED STATES PATENT OFFICE.

nnwann non Norma,

OF NEW YORK, N Y., ASSIGNOB T0 MINERALS SEPARATION LIMITED, 01 LONDON, ENGLAND.

VALVE FOR ('lONTBOLLING THE FLOW OF THICK PULI'Y MATERIAL AND THE LIKE.

of thick pulpy material or the like.

It is often necessary in dealing with n liquid which has solid matter suspended in it, to allow the solid matter to settle more or less and thereafter to draw oil the thick pulpy material thereby separatmgit from the bulk of liquid.

This invention relates to a valve for con-- trolling the flow of such thick pulpy material, particularly thickened mineral pulps, thickened slimes and the like and is specially applicable for the removal or discharge of thickened mineral pulp or thickened slime pulp from receptacles in, which the thickenportions or the solid "portions settle to the bottom. r I

According to this invention a valve for controlling the flow of the thick pulpy petthat the pressure of a head of liquid '1' applied to both sides of the valve, normally to hold it closed, and so that a predetermined increase of pressure on one to the collection of heavy or thick pulpy material carried in the liquid will open the valve and allow such material to pass.

Thus a valve for controlling the flow of thick pulpy material may consist inahollow chamber covered with an elastic diaphragm which on one side presses against the orifice through which the flow is to be controlled and on the other is so connected by a conduit to the liquid from which the pulpy material is being separated that the liquid head is the same on both sides of the diaphragm.

J In one form of this invention the area of the orifice through which the flow is to be controlled is less than the eilective area of pressure on the other side of the elastic diaphragm, whereby when both. sides of the diaphragm are under the some liquid head the valve will be normally closed by the pros sure of the liquid. 7

Specification of Letters Patent.

Application filed December 4, 1011. Serial Io. 663,900.

elastic material F end of the side due,

Patent ed Sept. 2, 1 913.

The diaphragm or valve is preferably of llldladllbbel' or the like which readily yields to the varying pressures and means may be provided for altering the position of the I .valve in relation to the valve seat for example by adjusting the hollow chamber. I shall now describe one form of apparatus embodying my invention illustrated in the accompanying drawings and shall there-- after point out my invention in claims.

Figure 1 is an elevation, partly in vertical section, of the apparatus. Fig. 2 is an enlarged central vertical section of the valve member and its adjuncts.

At the bottom of the vessel it into which passes the liquid containing solid or heavy matter in suspension is an extension B at the end of which is formed a alve seat (1 which may simply be the bottom of the open pipe B and this thick pulp outlet is arranged to discharge the thick pulp into a chamber, launder or the like, D.

Immediately below thevalve seat C is a hollow open-ended box or chamber F. The valve consists of a piece of rubber or like stretched over the open hot: in close proximity to the valve seat. From the other side of the box a pipe G passes through suitable guides and tion of the liquid is arranged in such a way Us connected by a hose or other conduit G to a ipe C entering the vessel A containing t liquid from which the pul is-to be separated. This conduit may ve its upper opening near the surface of the liquid to prevent the admission of solid matter" thereto. The arrangement is such that the liquid head on the under side of the diaphragm is practically the same as the liquid head at the orifice 01' valve seat. I

The area of pressure on the top of the valve is the area of the orifice and ,\t-he eflective area of pressure on the underside of the diaphragm arranged to beslightly greater so that if the apparatus contains liquid only the valve will be noflnallv closhl it 1 box is provided it so that the The under side of the a tclescopeij'oiut H one screw box can be raised or lowered, thus adjusting its position in relation to the valve seat,

Suitable brackets J are provided, fonholding-the various portions of the device in the proper relative posit-ions. The'operationof the valve is as iollows The conduit, composed of the pipes 0 Gr and G, leading to the under side of the diaphragm is first filled with water so that; the valve will be closed then the liquid containing solid matter in suspension is run into the vessel i\ am] the solid matter or thick pulp settles in the bottom or into the extension thcreol' l The position of the valve is adjusted so that \\ith equal pressure on both sides of the. valve F it is clcsed by the rubbc! 1* bulging out until it comes into close contact with the valve-s at. As the solidor thick pulp v material settles out from the liquid on the top of the valve, there will be an increase or pressure on top of the val\e and when this pressure reaches apredeter- -i mined amount, the valve FXvill bcpushed down from its seat and the. thick pulpy matcrial will be allowed to escape into the reccplaclc I placed to catch it. It a suflicientquantit v ot' the thick pulpy materialshculd escape to remove the excess pressure from the top of the valve, the valve will regain its position on the valve seat. Thuseven it the. proportion of solid matter entering with the liquid should lluctuate. the valve will automatically accommodate itself to the sup-- ply so that the thick pulp will only be discharged when it accumulates to the desired extent.

in operation the material will be allowed to accumulate to the desired dept-h above the diaphragm, when the valve will be adjusted to discharge with the material at that depth.

It is obvious that various modifications may be made in the construction shown and abme particularly described within the principle and scope of my invention.

What I claim as my invention and desire to secure by Letters Patent is v 1. A valve for controlling the flow of the hick pnlpy portion of a liquid tln'ongh an orifice, comprising a pulp receptacle having a pulp discharge orifice, a chamber, an clas tic diaphragm forming atone side a permanent closure for the chamber and adapted atits other side to close the pulp orifice at the outside. thereof under the pressure of the chamber in opposition to'that from the pulp orifice in the direction of the flow of pulp from the receptacle and a conduit connecting the chamber to a head of liquid for pressing the diaphragm against the outside of the pulp orifice.

' 2. A valve for controlling the (low ot the thick pulpy portion of a liquid through an orifice, comprising a pulp receptacle having a. pulp discharge orifi e. a chamber. an elastic diaphragm forming at one side a permanent closure for the. chamber and adapted at its other side to close the pulp oritice at the outside thereof under thoprcssurc ot-thc chamber in opp sition to that from the pulp orifi e in the direction ol' the (low of pulp from the receptacle, the ell'cct'ive area of the diaphragm being greater on the side toward 1 the chamber than on the side adja ent to the pulp orifice. so that with both sides of the diaphragm under the same liquid head theii. valve, for controlling the llow of the thick pulp portion of a liquid through an' orifi e. comprising an elastic diaphragm a1- raugcd to press exlcriorly against and to close the pulp"oril"i e. a chamberfor which the diaphragm at. its other side forms a per-- manent closure, \vhcrehv the diaphragm is subjected on the side toward the. chamber to the pres ure of the chamber opposed to that from the pulp oritice. the chamber being arranged t'or :uliustmcnt to and from the pulp orifice to alter the relation of the diaphragm to the pulp orifice, the effective area of the diaphragm being gi'eater on the side toward the chamber than on the. side adjacent to the. pulp orifice so that with both sides of the diaphragm under the same liquid head the diaplu'aginavill be normally "pressed against the pulp orifice to close it, and a conduit connecting the chamber to a head of liquid.

.4. A valve for controlling the flow of the thick pulpy portion of a liquid through an orifice, comprising a chamb r, an elastic diaphragm forming at one side a closure for the chamber and adapted at its other side to close the pulp orifice under the pressure of the chamber in opposition to that from the pulp orifice. and a conduit connecting the chamber to the head of liquid from which the pulpy portion is supplied to the pulp ri lice.

A valve for controlling the. flow of the I thick pulp portion of a liquid through an orifice. comprising a chamber. a rubber diaphragm forming at one side a closure for the chamber and adapted at its other side to close the pulp orifice under the pressure of thechamber in opposition to that from the pulp orifice, amt a conduit connecting the chamber to the head of liquid from which the pulpy portion is suppliedto the pulp -orifice. I I

't'i. A valve for controlling the flow of the thick pulpy. portion of a liquid through an orifictx cmnprising a chamber, a rubber diaphragm forming at one side a closure for the. chamber and adapted at. its other side to close' the pulpforifice under the pressure of the chamber in opposition to that from the pulp orifice. the effective area of the diaphragm being greater on the'jside toward the chamber thanon the side adjacentto the pulp orifice so that'nith bothsides of the diaphragm under the same liquid head the diaphragm will be normally pressed against the orifice to close it, and a orifice, comprising "ii-chamber, a"1 'ubher d aphragm forming at one side a closure Y conduit connecting the chamber to .the head of liquid from which the PUlPYlJOI'tlOIl is supplied to the pulp orifice.

7 A valve for controlling the flow iof the thick pulpy portion of a liquid" through an ffor the chamber un'cladaptedot its otherside to,close' the pulp orifice under the pres.-

sure of the chamber in opposition to hot "from the pulp orifice, the effective area of the diaphragm being greater. on the side toward the chamber thanion the sidem cljacenl' to the pulp orifice so that with both sides of lthe diaphragm underflthe same liquid head the diaphriigin will be normally pressed against the pulp orifice to .close it,

and a conduit; connecting the chamber 'to the head of-liquid from'which the pulpy portion is supplied to the pulp orifice, the chamber being adjustably connected ivith theconduit so as to permit adjustment of the diaphragm relatively to the orifice.

In testimony whe eof I have signed my I name to. this specification in the presence of