US1149594A - Valve. - Google Patents

Description

E. OMALLEY.

VALVE.

- APPLICATION FILED OCT. lijh 1911.

Patented Aug. 10,1915.

3 SHEETS-SHEET I.

[1V1 'EATOR, 0 ma I I I -1/lm 111) E. OMALLEY.

VALVE. APPLICATION FILED OCT. 13, I9!!- Patented Aug. 10, 1915.

3 SHEETS-SHEET 2.

." a5 sans an in,

EDWARD OMALLEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO OMALLEY-BEARE VALVE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OI? DELAWARE.

VALVE.

Specification of Letters Patent.

Patented Aug. 10, 1915.

Application filed October 13, 1911. Serial No. 654,530.

To all whom it may concern:

Be it known that I, EDWARD OMALLEY, a citizen of the.United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Valves, of which the following is a specification.

This invention relates to improvements in reciprocating valves, and more particularly to blow out valves for steam boilers.

It is the object of this invention to provide a blow out valve for steam boilers that when properly installed, the operating parts of the valve may be readily cut off from the interior of the boiler and it is a further object of this invention to so con- 'struct and mount the operating parts that a damaged part may be readily repaired or replaced when in the cut off position without the use of special tools and without putting the boiler out of service.

The advantages of such a valve are obvious for it will allow of the installation of a system of blow out valves on a boiler by means of which the sediment in the lower parts. of the boiler and the foul water at the surface may be readily blown out and the boiler kept in continual service without having to draw the fires to repair a worn or damaged blow out valve. The damage which results from an accumulation of sediment in a boiler and the trouble caused by foaming boilers, due to accumulation of foul water at the surface, by constant distillation are well known. When the accumulation of sediment becomes excessive or the water becomes so foul that foaming cannot be prevented, the boiler must be taken out of serviceand thoroughly cleaned and washed unless it is provided-with a system of blow out valves, and unless these valves may be independently cut ofi from the boilers for repairs, a damaged or worn blow out valve is as bad as no valve, becauseone damaged valve means that the boiler must be taken out of service until this valve isrepaired.

The installation of a system of valves such as contemplated in this application obvi ates the expense of labor, the damage to the boiler due to strains set up by unequal expansion and contraction of the parts in ring up and in cooling off, and the probability of this work being necessary at a time when the boiler is most needed in service.

The greatest source of trouble, and in fact about the only source of trouble, in the various systems of blow out valves in general use has been the blow out valves becoming leaky and defective due to the head and seat being cut or damaged by the action of scale and dirty water. It sometimes occurs that when operating a piece of scale or other obstruction becomes lodged on the seating surface making it impossible to close the valve and the result is obvious. To overcome such trouble and place the valve in working condition again heretofore it has been necessary to remove the damaged part to regrind or replace it, or make other repairs to the inside of the valve, which necessitated the blowing down of the boiler before the work could be done.

This invention provides not only the independently cutting out of the operating parts of a blow out valve from the boiler while in service, but also in addition a magazine of repair parts upon the head and;s 'eat, so that when the valve becomes leaky or damaged the valve is out out and the damaged part blow out valve :1; large removed and the next one in line will take or other repairs made inside the its place,

valve, and the valve then placed in service,

boiler is under full steam preswhile the sure.

A further improvement lies in the manner of constructing the rotatable member carrying the operating parts of the valve and mounting it in the main casing. This rotatable inner member is conical or tapered and is mounted in a correspondingly tapered main casing and secured therein by adjustcarried uponthe inner member which engage the main casing on either side. Should the inner member stick able retaining rings -in the casing or become hard to turn, it is ilmer member as the lever may be inconvenient and may strike the boiler or otherwise become an obstruction. To overcome this in this particular form of valve, a means has been devised by which the fulcrum of the lever may be adjustably engaged with the rotatable member and the lever detached fromthe stem to act as a wrench for rotating the inner member in cutting out the valve.

While the preferred forms of this invention are illustrated upon the accompanying crum, member of the lever for engaging the inner rotatable member. Fig. 8 is a trans verse vertical section through a nest of plates including interposed resilient noncorrodible plates.

The valve in all forms, as contemplated in this invention, comprises a main or outer casing 1 of conical or tapered form and open at top and bottom with an arm 2 leading from the center of one side thereof forming a passage 3 from the interior of the casing and provided at the outer end with circumferential screw threads 4 for engagement with the boiler wall. Within the tapered casing 1 is rotatably mounted a hollow member or plug 5 of similar contour. open at top and bottom and provided upon one side with a port 6 corresponding with the passage 3 in the arm 2.

I member or plug 5 extend beyond the casing for turning the same.

1 at the top and bottom parallel with the center line of the casing 1 and are provided with screw threads for engagement with similarly screw threaded retaining rings 7, the ring 7 upon theiaupper portion engaging the top of the casingl' and the ring 7 upon the lowerportion engaging the bottom of the casing 1. These rings 7 are provided with cut away portions adjacent the casing to snugly receive the walls thereof and upon the outer circumference of the rings 7 a plurality of outstanding lugs '8 are provided The upper portion of "the rotatable member 5- above the screw threaded portion is preferably reduced in size and providedwith a plurality of fiat, verticalsurfaces 8 hexagonal in shape, to be engaged by a wrench or like tool for operating the same. The valve stem 9 is mounted in a proper housing through this upper portion of the member 5,-which stem plates 16 and hold them The walls of the inner 9 is provided with a valve head 10, preferably constructed in accordance with the valve heads disclosed and claimed in my Patents Nos. 978,927 and 978,930. T he valve head is preferably provided with a flatbase surface 11 and a centrally depending screw threaded stud .or post 12. A plurality of thin, flat,*annular wearing surface plates 13 equal in thickness to the amount of metal removed in regrinding such a valve head, such as are disclosed in my former Patent N 0. 978,930, are mounted upon the base surface 11 and are held in place by the nut 14 upon the post 12.

To the above described main construction valve seats are secured in the manner disclosed in the different figures on the drawing. In each case the inner walls of the inner rotatable member 5 near the open end are provided with an annular inwardly projecting shoulder 15 of slightly. greater inner diameter than the diameter of the valve head 10, the under side of which is flat and the upper side curved in to the walls. As shown in Fig. 1, a plurality of thin' flat annular wearing surface plates 16 similar in construction to those on the valve head and of less inner diameter than the valve head 10 are placed against the annular shoulder 15. The inner walls below the shoulder 15 are screw threaded and engaged by a similarly screw threaded s eat base 17 in the formof apipe having a shoulder 18 at the top equal in width to the width of the annular surface plates 16 and provided upon the circumference of the outer end with a plurality of flat wrench engaging surfaces 19 whereby-the seat base 17 may be drawn firml against the seat in lace.

In Fig. 2, the lower wa s of the inner member or plug 5 are extended parallel to the center line a longer distance below the bottom of the casing 1, the exterior circumference is screw threaded while the inner cir- 1 cumference is smooth. In this case the seat plates 16 are held against the annular shoulder 15 by a seat base 20, which removably fits within the lower extended walls of the rotatable member or plug 5 and extends a short distance below them. The top and bottom of the seat base 20 are provided with inwardly extending annular shoulders 21 and "22 '1 respectively. Against the lower shoulderi 22 is placed an outwardly shouldered discharge pipe 24 of the same inner diameter as the diameter of the shoulder 22, but of less outer diameter. A securing nut 25 screw threaded to engage the outer downwardly projecting walls of the rotatable member or plug 5 is provided with an inwardly projecting annular shoulder 26 to engage the outer circumference of the seat base 20 and shoulder on the discharge pipe 24: and another shoulder 27 thereon to enabout its wrench may under side of the flange 31.

gage the outer circumference of the pipe 24 under its upper outwardly extending annu lar shoulder. The outer circumference of the nut 25' is provided with a plurality of flat wrench engaging surfaces 28. whereby a bev applied to draw the seat base 20 against the seat plates 16.-

In Fig. 3, the construction of the lower walls of the rotatable member or plug 5 is the same as in Fig. 2, but in this case the seat base 30 is provided near its lower extremity lar flange 31. A securing nut 32 internally screw threaded to engage the screw threaded lower portion of the depending walls of the member or plug 5 is provided at its lower end with an inwardly extending annular. shoulder 33 adapted to engage the The outer circumference of the securing nut is provided with a plurality of flat wrench engaging surfaces 34 whereby a wrench may be applied and the seat base 30 drawn against the seat plates 16.

In Figs. .1, 2 and 3, conical casing 1 and the rotatable member or plug taper toward the bottom or discharge end of the valve. In Figs. 4 and 5, the taper is toward the top of the valve thereby giving a valve seat of greater inner diameter as the Wider part is at the discharge end with the same weight valve. In other respects the main parts in these figures arethe same.

In Fig. 4 the inner parallel walls of the rotatable member or plug 5 extending below he casing 1 are screw threaded and the seat base 40 is exteriorl screw threaded to en, gage therein. The ower exterior portion of the seat base 40 is enlarged and is provided circumference with a plurality of flat wrench engaging surfaces 41 whereby'a portion of wrench may be applied to draw the seat sea-t plates 16. A look nut 42 is placed about the screw threaded the seat base 40, so that the same may be locked 'to the casing when in position.

In Fig. 5, the walls of the inner rotatable -member or plug,5'are extended downward parallel to the axis and then at their lower extremity are provided with an outwardly projecting annular flange 50. The outer circumference between the casing 1 and the flange 50 is screw threa' ed to receive the retaining ring 7. In this form it is necessary that this retaining ring 7 may be installed. The seat base 51 is provided at its lower ex:

'tremity with "a corresponding outwardly projecting annular flange 52 and at equal distances about these flanges 50 and 52 cor-- responding apertures are formed through which bolts 53 are passed, so that by taking up on the. nuts 54 on the boltsthe seat base 50 will be drawn against 'the "seat plates 16.

with an outwardly extending annuplate valves. In the be toward the top 1n order Modified forms of the wearing surface plates upon head and seat are illustrated in Fig. 6; The general construction of the head and seat is the same as disclosed in Fig. 1, but in Fig. 6 the inner surface of the seat base 17 a is beveled and in the same manner and at the same angle the base surface ll upon the head is beveled and the thin surface wearing plates 16* are-correspondingly beveled.

There are times when a beveled surface is preferable for the contacting surfaces of the head and seat andvalves employing the thin, wearing surface plates may be made in this form as described above. The preferable way to bevel the plates 16 is to place I It has been found that a miniature form of blowout valve may be readily used to great advantage as a gage cock; In a. gage cock it is necessary to use a small hand Wheel on account of the limited space on the boiler head, and therefore less pressure is applied in feeding this small valve thanin feeding other forms of the thin, wearing surface valves constructed to give high pressure in feeding, the thin, wearing surface plates form a compact rigid nest becoming a solid contacting or wearing surface, preventing corrosion between the adjacent surfaces of the adjacent plates.

In the miniature form used as a gage cook the service is'not as severe and in this form of valve a certain amount of spring or cushbe beveled independently before,

composition corresponding in shape'to the wearing surface plates is interposed between the adjacent wearing surface plates 16 to give the cushioning effect desired in feed-- ing, and yet be held closely associatedbetween the adjacent wearingsurface'platesm the nest to prevent corrosion of the ad acent surfaces of the plates, as shown in Fig. 8. The damaged or uppermost wearing surface plate may be removed in reseating a valve.

In all forms where the rotating or screw threaded stem is used it is preferable to'construct the valve heads to allow for the rotation of a single head plate should the head fail to revolve upon the stem during the closing moments of the valve. This form of valve head is disclosed in my former Patent No. 978,930. Should it be preferable to use a valve head this is rigidly secured to the stem or should a rotatable valve head be-' come rusted or in any other way become fixed to the stem by using a single head plate, the head and seat plates will not be caused to rub each other during the closing moments of the valve. In Figs. 2, 3 and 5 the seat bases 20, and 50 respectively are so arranged and secured that when a single seat plate is used it may rotate upon the seat base during the closing moments of the valve, for the same purposes that the head plates are made rotatable. In Fig.2,the upper portion of the shoulder 26 will engage the lower extremities of the walls of member 5 and retain seat base 20 a sufficient distance from the internal annular shoulder-15 to allow of the rotation of a single seat plate 16. In Fig. 3 the'external annular flange 31 will engage the lower portions of the walls of member 5 in the same way and in Fig. 5, the flanges 50 and 52 will engage in the same manner for the same purpose.

' Fig. 6, illustrates the form of pull stem.

and lever peculiar to this invention. pull stem 60 is mounted to reciprocate in a suitable housing 61, preferably formed integral with the inner rotatable member or plug 5. That portion of the housing 61 adjacent the top of member 5 is provided with a plurality of equilateral, vertical, flat faces sion 63 thereabove is .exteriorly screw threaded. A fulcrum member 64 for the lever having an aperture corresponding to the equilateral portions 62 placed thereover and held in place by -a l"ock nut 65 upon the screw threaded extension 63. A connecting link 66 is pivoted, to the fulcrum member 64 between two outstanding ears 67. A vertical stop G8 is arranged between the ears 67 back of the pivotal pin 69, and the link 66 at this extremity is provided with a heel 7 0 adapted to engage the stop 64 when the link is in horizontal position. An operating lever 71 is pivoted intermediate its ends by a pin 72 to the top ofthe pull stem .60 and at one end to the free end of the con- The" 62, preferably six, and the upward:extenposition to avoid theboiler or obstructions,

and be readily operated. lVhen desirable the lever pin 72 may be removed from the pull stem 60 in utilizing the wrench feature of the link and fulcrum member.

The valve described above in its various forms makes it possible to blow out boilers regularly without fear of the boiler being put out of service by failure of a valve to close. When the head and seat become worn the damaged plates may be discarded and other repairs made inside the valve without putting the boiler out of service. The operation is sure and positive'and each blow outv is independent of all others. These features do away with the uncertainties ofblowing out boilers; allow the boiler to be kept constantly in service, and allow repairs to be made to the blow outs while in service. All these things greatly reduce the uncertainties, dangers, and expense of boiler operation and add to the life and service of the boiler. I

What I claim is 1. In a blow out valve, a conical or tapered casing having an inlet on one side thereof, a hollow member or plug rotatably mounted within the 'casing and provided with a port in the side wall corresponding to the inlet of the casing and parallel screw threaded portions extending above and below the casing, screw threaded retaining rings thereon adapted to engage the top and bottom of the casing respectively whereby I the hollow member or plug may be adjusted within the casing, andoperating valve parts within the hollow member or plug.

2. In a blow out valve, a conical or tapered casing having an inlet on one side gagement with the under side of the annuit. By removing the lever pin 73, the upper end of the connecting link will be freed and upon rotating about its lower pivot a wrench is formed by the fulcrum member 64 about the flat faced portions 62 of the inner rotatable member 5, by which construction the valve may be opened .or closed to the boiler. As' the fulcrum member 64 is adjustable about the fiat faced portions 62, the operating lever 71 may be placed in any desired and holding the seat lar shoulder, a discharge pipe forming a seat base and vadjustable means securing the seat base within the said member or plug nular shoulder.

3. In a blow out valve, a conical or tapered casing having an inlet on one side thereof, a hollow member or plug rotatably mounted within the casing and provided with a port corresponding to the inletin the casing, a valve head, a valve stem mounted upon the top of the said member or plug, an internal annular shoulder upon the lower portion of said member or plug, a plurality of removable seat plates upon the under side of the annular shoulder, a removable seat base for holding the seat plates against the plates against the anthereof, a hollow member or plug rotatably mounted within the casing having a port corresponding to the inlet in the casing, a valve-head, a valve stem mounted upon the top of the said member or plug, an internal annular shoulder upon the lower portion of vsaid-member or plug, a removable seat plate upon the under side of the annular shoulder, a removable seat base, means engaging the seat base and bottom of the said member or plug for adjustably-securing the seat base to hold a plurality of seat plates against the annular shoulder and said means provided I I with a stop terminating the upward movement of the seat base a suflieient distance from the annular shoulder to allow a single seat plate to be rotatable therebetween.

,5. In a blowout valve, a conical or tapered casing having an 'inlet on one side thereof, a hollow member or plug rotatably mounted within the casing and" provided with a port corresponding to the inlet'of the casing, a valvehead, a valve stem mounted upon thetop of the rotatable member or plug, an internal annular shoulder upon the lower portion of said member or plug, a

plurality of removable seat plates in engagement with the under side of the annular shoulder, a resilient non-corrosive plate interposed between the seat plates, a, discharge pipe forming a seat base and adjustable means for securing the seat base within the said member or.plug' and holding the seat plates against the annular shoulder.

6.- In a blow out valve, a valve casilighaving an inlet on one side thereof, a hollow member or plug rotatably mounted within the casing and provided with a port corre sponding to the inlet of the casing, a valve seat within thesaid memberor plug, a valve head, a pull stem therefor reciprocating through the top of said member or plug, an operating lever detachably pivoted to the pull stem, a link pivoted to one end of the 'the said member or plug,

, plug operating lever and connected to the said member or plug whereby when the operat ing lever is diconnected from the pull stem the lever and link are adapted to rotate the said member or plug.

7. In a blow out valve, a valve casing having an inlet on one side thereof, a hollow member or plug rotatably mounted within the casing and provided with a port corresponding to the inlet, a valve seat within a valve head, a pull stem therefor reciprocating through the top of said member. or plug, an operating lever 'detachably pivoted to the pull stem, a fulcrum member adjustably and non-rotatably attached to the top of said member or and a connecting link pivoted at one end to one end of the lever and at the other end to the fulcrum member providing, a v

turning lever for the said member orplug upon detaching the operating lever from the pull stem.

8. In a blow out valve, a valve casinghaving an inlet on one side thereof, a hollow member on plug rotatably mounted therein and having a port corresponding to the inlet, a valve seat within the said member or plug, a valve head, a pull stem therefor reciprocating through the top of said member or plug, a fulcrum member adjustably and non-rotatably engaging a part of said member or plug, an operating lever pivoted to the pull stem, a connecting link pivoted to the fulcrum member and detachably pivoted to one end of the operating lever, and adapted to be disengaged from the operating lever and act in conjunction with the fulcrum member as a wrench to rotate said-member or plug, said link provided with a heel at the end adjacent the fulcrum member and said fulcrum member provided with a stop 9 JOSEPH E; LiND UIS'r, B. T. HANRAHAN.

the heel when the link is

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