US2595766A - Ball cock valve - Google Patents

Description

H- D. CLEMMONS BALL COCK VALVE May 6, 1952 Filed Feb. 25, 1950 INVENTOR Herbert D. Clemmons ATTORN EY Patented May 6, 1952 UNITED STATES PATENT OFFICE BALL COCK VALVE Herbert D. Clemmons, Cheshire, Conn., assignor. to Scovill Manufacturing Company, Waterbury, Conn a corporation of Connecticut Application February 23, 1950, Serial No. 145,842

One object of this invention is to provide an improved valve silencing means that is adjustable to effect a silencing operation of the valve over a wide range of fluid pressure systems in which the valve may be used.

A further object is to provide an improved control Valve of the above character in which the fluid flow is distributed thinly through a long progressively increasing conical passageway to effect the silencing operation.

A still further object is to render the valve self-cleaning in case any sediment is collected in the base of the valve housing, and also to provide means to catch any large particles of dirt orforeign matter and prevent them from jamming or otherwise obstructing the thin conical fluid passageway.

A structure which is a preferred embodiment of my invention is illustrated in the accompany: ing drawing, in which;

Fig. 1 is a fragmentary view in side elevation of a ball cock valve embodying features of my invention, parts being broken away and shown in vertical section with the valve in closed position.

Fig. 2 is a right end view of the same.

Fig. 3 is a sectional view similar to the upper part of Fig. 1 but showing the valve in open position, and

Fig. 4 is a perspective view of the silencing control sleeve.

Referring now to the drawing in which like reference numerals indicate like parts in the several views, the numeral ii! indicates a supply pipe or riser which is mounted within a tank H in the conventional manner. Threadedly attached to the upper end of the riser is a nozzle member I2 having an enlarged hollow interior 13 that converges into a discharge opening M at the upper end of said nozzle. The nozzle i2 terminates at its upper end in a valve seat [6 and the exterior surface of the nozzle is in the form of a relatively long conical face I! that extends uninterruptedly up to the valve seat It. The nozzle member I2 is provided with an enlarged shouldered portion i3 belo the conical face I! which portion 18 is threaded into a valve casing 20.

The valve casing 29 has a discharge chamber 2|, an outlet 22 and a threaded bore 23 in axial alignment with the riser Iii. A hush tube 24 is connected to the outlet 22 and extends downwardly to a point adjacent the bottom of the tank I l.

h a jus b e. i en in m e ro ded in thefor-m ofa tubular sleeve 25 having a threaded section 26 for adjustable engagement with e threaded. r 23 of he, casing 2 Th sleeve 25 extends down into the discharge chamber 2| and is formed at its lower end with an inset portion 21 from which depends an outwardly flaring conical skirt 28 conforming to the angle of the nozzle conical face II. The upper end of the sleeve is integrally formed with an ann-u-,,

lus ZQ that extends-outwardly from the sleeve 25 and is adapted to overlie the upper surface. of the valve casing 2B.

The relative position of the conical skirt 2'! to the conical face I! of the nozzle l2 determines the silencing effect of the valve mechanism, and when the valve is installed in a fluid supply line of a high pressure flow system the skirt 28 should be adjusted so that there is only a relatively narrow space 30 provided between the complemental conical surfaces. If the valve is to be installed into a low pressure fluid system then the sleeve 25 is threaded upwardly in the casing 20 to provide a relatively wider conical space 30 between said complemental conical surfaces. The sleeve 25 may be held in adjusted position by a screw 3| threaded into a lug 32 at the upper end of casing 20 and which screw 3i coactswith the annulus 29 of the adjustable sleeve 25 as shown in Fig. 1.

In order to control the flow of water through the valve, a plunger valve 33 is arranged within the sleeve 25 and is provided on its lower end with a sealing disc 34 of flexible or resilient material and held in place by a flanged collar 35 threaded to the plunger valve 33. The disc 34 is compressed against the nozzle valve seat 16 to close the valve and removed therefrom for opening the valve by a conventional form of mechanism as now explained.

The valve casing 28 is provided with an outwardly extending bracket 35 disposed oppos te the locking screw SI and provided with upper and lower pivot eyes 37 and 38. A valve lever 39 is pivoted to the upper bracket eye 3'! as by a thumb screw 46 and has one end engaged in a slot 4| in a post 32 extending upwardly from the plunger valve 33. The opposite end of the valve lever 39 is connected to a float arm 43 by a hinging cross link M, the float arm in turn being pivotally connected to the bracket lower eye 38 as by screw 45. (See Fig. 1.)

When the plunger valve 33 is opened by the lowering of the float arm 5-3, the water first fills the valve chamber 46 in sleeve 25 and is then directed downwardly through the conical annulus 30 thus breaking down and spreading out the water stream incident to its discharge into the discharge chamber 2!, thus producing a substantially noiseless discharge. In view of the fact that the silencing sleeve 25 is threaded into the casing 20 it may be readily adjusted for maximum operating silence of the valve under a wide range of pressure conditions. Furthermore, the silencing sleeve in being removable from the casing 25 may be renewed or cleaned as desired.

It is to be noted that the inset portion 21 of the silencing sleeve 25 is located some distance below the valve seat It and this provides a free space within the valve chamber 46 within which any large pieces of dirt or foreign matter may be collected rather than to be forced down into the conical annulus 30. Also the fact that the lower end of the conical skirt 28 is positioned above the base of the discharge chamber 2| precludes the possibility of sediment accumulating and building up at that part of the chamber to the detriment of the valve efficiency.

By making the valve seat I6 high in the chamber 2 I, I am able cheaply to provide an unusually long conical surface on the outside of the nozzle l2. A long interior conical surface on the sleeve 25 can easily be provided to complete the long conical annulus passageway 30 through which the water flows downwardly. The Water in reversing itself washes over the valve seat It keeping it clean and the long downward conical passageway 30 provides the optimum silencing effect.

One form of the invention is presented herein for the purpose of exemplification. It will, however, be appreciated that the invention is susceptible of embodiment in other structurally modified forms coming equally within the scope of the appended claims.

What I claim is:

1. A ball cock comprising in combination a valve casing having a chamber and an interiorly threaded portion at its upper end, 'a nozzle having means for connection to the usual riser supply pipe and projecting upwardly into said chamber and terminating in a valve seat a substantial distance above the bottom of said chamber, said nozzle member having an exterior conical surface extending uninterruptedly from said valve seat to the bottom of the chamber, a regulating sleeve threaded into the .upper part of said chamber and having at its lower end a skirt with an interior conical surface surrounding and complemental to the conical surface of said nozzle and being spaced therefrom depending upon the longitudinal adjustment of said regulator for varying the rate of flow through the conical annulus between said conical surfaces, which annulus gradually increases in size from closely adjacent said valve seat to a point closely adjacent the bottom of said chamber, the length of said conical annulus being substantially greater than its diameter at the entrance end adjacent the valve seat to quiet the flow of water over and away from said valve seat, and a plunger valve within said regulator sleeve for coaction with said valve seat.

2. A ball cock according to the preceding claim wherein there is provided between the regulator sleeve and the nozzle end a small chamber communicating with the entrance to the conical annulus.

HERBERT D. CLEMMONS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 570,811 Montgomery Nov. 3, 1896 2,038,229 Martin et a1 Apr. 21, 1936 2,111,836 Boyd Mar. 22, 1938 2,229,600 Park Jan. 21, 1941 2,304,272 Mueller et a1 Dec. 8, 1942

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