US3011176A - Valved fluid pressure accumulator - Google Patents

Description

Dec. 5, 1961 .1. D. LANGDON vALvED FLUID PRESSURE AccUMuLAToR Filed March 14. 1960 .//ldl United States Patent 3,011,176 VALVED FLUlD PRESSURE ACCUMULATOR Jesse D. Langdon, 1 John St., East Rockaway 5, N.Y. Filed Mar. 14, 1960, Ser. No. 14,733 4 Claims. (Cl. 4-27) This application is a continuation in part of Ser. No. 852,110, filed November 10, 1959, in turn continuing from Ser. No. 673,815, filed July- 24, 1957, now Pat. 2,918,680, December 29, |1959; original application March 29, 1954, Ser. No. 419,213.

The present application also pertains to application August 19, 1957, Ser. No. 678,799; the constructicnldisclosed by the last mentioned application now Pat.- 2,915,- 761, December 8, 1959, is closely related to the disclosure of the present application. v

The primary object of this application 4is to protect inventive disclosure appertaining to timing means to' delay the closure of valve means provided to evacuate areservoir forming the fluid pressure accumulator of the vari- ICC .ing 21 having its'outer end flanged radially inward resting against the `outer face of the handle flange near its periphery and being attached to the `wall of conduit 5. The stern 8 of valve 7 hasa lower conical end abutting the conical end of plunger 18, the coniform ends'providing a wedging effect giving additional leverage `for tipping valve 7 open more easily. Preferably' the abutting conical ends of plunger 18 and stem 8 are set olf center in axial relationship producing a lateral frictional conous species of the invention disclosed by the above recited cross references.

This invention is made for the purpose of obtaining the following results: f

l) Simplified construction. (2) Quick opening of the valve for rapid Vhuid evacuation. l

(3) Delayed closure of the valve permitting atmosphere to enter the accumulation chamber of the reservoir after fluid pressure has been evacuated.

(4) To permit liquid under pressure to flow thru an inlet and be discharged thru an outlet of greater capacity than the inlet, at one and the same time permitting atmosphere to enter the accumulation chamber by bypassing liquid flowing from the outlet.

(5) The provision of means providing a llow of liquid from the inlet thru the outlet whereby a trap provided for a water-closet is refilled with liquid after a flushing operation induced by liquid `flowing from vthe accumulationv chamber. f

(6) The utilization of pneumatic pressure built up by liquid under pressure entering the accumulation chamber via the inlet, whereby liquid is urged to gush thru the outlet accordingly when the valve is opened. v

(7) To provide auxiliary air inlet means in combination with the liquid inlet whereby egress of duid thru the inlet is prevented when a negative pressure exists therein.

Other and further objects and purposes will appear during the progress of the specification, as illustrated by the dra-wing.

The reduction to practice illustrated by the ldrawing is purely diagrammatic and may be changed within the scope of the claims.

0f the drawing:

The figure of the drawing illustrates a valve tluid pressure accumulator for the containment of air and liquid, comprising, a reservoir v1 having a liquid inlet 2, a combined air inlet andliquid outlet passage 3 of greater capacity than said liquid inlet and adapted to communicate with atmosphere at least part of the time when in active use, a valve casing 4 being inserted into the lower side of and provided with conduit portion 5 projecting downwardly of said reservoir 1, an annular valve seat 6 projecting radially inwardly, of said conduit portion 5,

a valve member 7 having a downwardly projecting stem A8, an upwardly projecting-eyelet 9 and being adapted to tact, this .feature serves -to rotate the valve 7 thereby distributing the wear upon the'lower peripheral edge of the valve head against the'seat 6 by turning the valve slightly every time the handle 19 is operated..

When the handle 19 is actuated and the Vvalve 7 is opened, the reservoir 1' being filled with iluid under pressure inthe shape of air compressed in chamber A above liquid level kW, pneumatic vpressure in chamber4 A urges liquid to gush forth from passage' 3 much faster than liquid under pressure can enter thru liquid inlet 2, immediately evacuating reservoir 1 of liquid except for the relatively small amount of liquid entering thm inlet 2 and flowing thru passage 3.

yThe ring 10 thru Stem 11, when float 12 is in position O, provides partial closure means for opening 13, delaying closure of valve.7.

The top of cup 15 is located below'fany possible ypredetermined minimum liquid level and is therefore-lilled with liquid when the reservoir is filled. The opening 13 around stem 11 permits slow drainage of liquid retained in the cup 15, said liquid effective to buoyup flo-at 12 to position O when the valve 7 is open, thereby holding the valve 7 in open position after the liquid is evacuated from the reservoir 1, whereupon, atmosphere is permitted to enter reservoir 1 untilcup 15 is` drained. While the valve 7 -is in open position, liquidventering thru inlet 2 flows thru passage 3. During the evacuationV of reservoir 1, the weight of the column of, plus the velocity phere immediately bypassing liquid'flowing frominlet 2 and by gravity thru the passage 3 of greater capacity, enters reservoir 1 balancing the pressure therein until the cup 15 is drained, thereby permitting floatk 12 to drop closing the valve 7: whereupon liquid under pressure rises above and holds valve 7 closed until the accumulation chamber of reservoir .1 is relled with pressure fluid.

Another feature of the invention is that during .the interim when the valve is held open to permit entry of atmosphere, liquid ilowing from inlet 2 thru passage 3 will provide liquid to refill the trap of la water-closet if attached thereto.

vAdditional features illustrated by the drawing include an auxiliary air inlet 22 which is shown as communicating with conduit 5 to provide liquid drain if valve 23 leaks. The air inlet 22 may communicate directlyV with atmosphere if desired.

It will be noted inlet 2 has its inner end opening spaced from and disposed opposite to the inner end opening of air inlet 22 which is capped by check valve 23 having downwardly projecting retaining legs of greater length than the space between the opposed inner ends of liquid 3 inlet 2 and air inlet 22, whereby the valve 23 will at all times be held in seating alignment with both inner ends of liquid inlet 2 and air inlet 22.

This construction prevents contaminated `iluid from entering the inner end of inlet 2 when a negative pressure exists therein; at which time atmosphere entering reservoir i1 thru air inlet 22 is effective to urge valve 23 upwardly against and close the inner end of liquid inlet 2. It will be noted air inlet Z2 terminates slightly below a liquid level below the level of ports 17 where a residuary liquid level is effective to minimize noise due to entrance of atmospheric pressure into reservoir 1 via air inlet 22.

Having described the invention, the operation thereof and the new results obtained, the following: claims are made:

1. A valved uid pressure accumulator for air and liquid, comprising a tank provided with a liquid inlet, a valved `casing having its upper end inserted into the lower portion of and providing an outlet for said tank normallyclosed by a tiltable valve member, said outlet being of substantially greater capacity than said liquid inlet to permit atmosphere to bypass liquid flowing thru said inlet to and from said outlet; wherein said outlet projects beyond the lower portion of said tank, a valve seat formed by the `inner end of said outlet, a tiltable valve member having a head resting on said valve seat and closing said outlet, the wall of the upper end of said casing projecting i'nto said tank and being ported above said valve seat for communicating betweenthe hollow of said tank and said outlet, a chamber located above the ported portion of said casing and surrounded by an imperforate wall, a cup superimposed upon said charnber, said cup having its bottom provided with an axial orifice communicating with said chamber, said cup located below a predetermined liquid level in said hollow of said tank to permit the cup to till with liquid, a loat in said cup, a stem projecting downwardly from said float and slidably disposed thru the orifice, a restricted annular passage provided by clearance around said stem to permit flow of liquid from said cup into said chamber, the lower end of said stem projecting into said cham bery and being loosely joined axially concomitant said tilt'able valve member; whereby the combined weight of said float its stem and the valve member will urge said valve member to close Said outlet after the accumulated liquid content has -been evacuated from said tank andl said cup, said restricted annular passage permitting liquid to drain from said cup into said chamber urging said valve member toward its seat, a plunger being slidably disposed thru the outlet wall on a lateral plane with respect to the stem of said valve member and forming actuating means to tilt and open Said valve member,

vthereby permitting liquid under pneumatic pressure accumulated in said tank to gush forth, the weight plus the velocity head of liquid flowing thru said outlet tending to create a momentary negative pressure in said tank, atmosphere entering said tank bypassing the relatively small volume of liquid flowing from said inlet thru said outlet to balance the pressure within said tank prior to the closing of said valve.

2. A device of the nature defined by claim 1, wherein the liquid inlet conduit and an auxiliary air conduit are extended into said reservoir, the inner ends of both conduits having their end openings opposed to one another and being spaced apart, a check valve member normally resting against and closing the inner end of the air inlet, guide means juxtapositioned with said check valve for holding said check valve in alignment between the opposed inner ends of the liquid and air inlets at all times; whereby when a negative pressure exists in said liquid inlet, atmospheric pressure effective via said air inlet conduit, urges said check valve against and to close the inner end of said liquid inlet effective to prevent backflow of liquid into a conduit connected'to said liquid inlet.

3. A valved fluid pressure accumulator for air and liquid, comprising a tank having a liquid inlet, a valve casing inserted into the lower portion of said tank, the lower end of said casing providing an outlet for said tank substantially larger than said liquid inlet the upper portion of said casing projecting into said tank, port means thru the wall of said casing immediately above the inside of said tank, a chamber surrounded by an imperiorate wall portion of said casing extended above said port means, cup means surmounting said chamber and disposed below a predetermined liquid level in said tank, float means disposed in said cup and provided with a stem extended downwardly, slidable thru an oriiice in the cup bottom, said stern projecting into said chamber, said orifice surrounding an annular passage around said stem communicating between said cup and said chamber, the lower end of said stern being axially yaligned with and secured to joining means concomitant the head of a tiltable valve member provided to `close said outlet, an axially disposed stem depending from the valve head and extending into said outlet, manual tilting means provided concomitant with the wall of said outlet and the stern of said valve; wherein the upper end of said outlet forms a seat for said t-iltable valve located immediately below said port means, Said cup being of a height to contain liquid supporting said float to lift the valve head into said chamber; whereby, the valve being closed and said tank filled withY an accumulation of air compressed above liquid in the cavity of said tank and cup to a pressure equal to the inlet pressure, when said valve is tilted open, releasing the pressure head above said valve, said tioat rising in said cup lifts said valve into the chamber above said ports, pneumatic pressure above the liquid effective to quickly evacuate said tank of liquid, liquid remaining in said cup lbeing slowly drained into said chamber via said orifice delaying the closure of said valve until after the liquid content of the tank has been evacuated, said outlet being of substantially greater capacity than said liquid inlet, permitting'communication between the inside of said tank and atmosphere to equalize the air pressure both sides of said outlet.

4. A device of the character defined by claim 3; wherein the depending stem of the valve member is unguided, relatively large and heavy, the lower end of said stem being coniform, a stemmed plunger having a hanged head reciprocally mounted in a housing projecting from the outside of the outlet, said plunger being held in normal position of rest by a resilient member disposed around the plunger stem between the head of the plunger and the outside wall of said outlet, the stem of the plunger slidably disposed thru the outlet wall and provided with a conical terminal end having its apex projecting against the rounded coniform surface of the lower end of the valve stem; whereby pressure against the plunger head will cause its stem to urge said valve stem ofi center with respect to the axial alignment of said plunger, said valve stem of the tiltable valve being unguidedis thrust aside by the impingement of the plunger apex against the rounded coniform surface of the terminal end of said valve stern thereby exerting a frictional Stress laterally,

between the rounded surfaces of the two conical ends tending to rotate the tiltable valve each time said plunger is activated thereby distributing the wear around the valve head periphery contacting the valve seat.

References Cited in the file of this patent UNITED STATES PATENTS Langdon Dec. 29, 1959

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