US3273805A

US3273805A - Pressurized fluid nozzle assembly

Info

Publication number: US3273805A
Application number: US401156A
Authority: US
Inventors: Thomas E Hall
Original assignee: Ingersoll Rand Co
Current assignee: Ingersoll Rand Co
Priority date: 1964-10-02
Filing date: 1964-10-02
Publication date: 1966-09-20
Anticipated expiration: 1983-09-20

Description

Sept. 20, 1966 T. E. HALL 3,273,80E

PRESSURIZED FLUID NOZZLE ASSEMBLY Filed Oct. 2, 1964 2 Sheets-Sheet 1 26 F 2o 2o l8 i C 24 I 1 22 I0 I F762 2 I A --|4 A uumr 432 Q 32 INVENTOR.

THOMAS E. HALL ATTORNEY Sept. 20, 1966 T. E. HALL PRESSURIZED FLUID NOZZLE ASSEMBLY Filed Oct. 2, 1964 FIG. 5

AQC

2 Sheets-Sheet 2 FIG. 7

INVENTOR.

THOMAS E. HALL.

/ ATTORNEY United States Patent 3,273,805 PRESdURlZED FLUID NOZZLE ASSEMBLY Thomas E. Hall, Allentown, Pa, assignor, by mesne assignments, to lingersoll-Rantl Company, New Yorlr, N.Y., a corporation of New Jersey Filed Oct. 2, 1964, 'Ser. No. 401,156 6 tClaims. (Q1. 239--590.3)

This invention relates to fluid nozzles and more particularly to high-pressure liquid nozzles which may be employed in hydraulic descaling systems, screen unblinding systems, and other light hydraulic systems requiring a stream of high-pressure fluid.

High-pressure liquid nozzle systems employed in descaling, screen unblinding, and other similar uses usually comprise a housing, a nozzle member having an elongated, narrow, rectangular-shaped aperture or orifice therein secured within the housing, and means for securing the housing to a member, such as a manifold, to receive the pressurized fluid. The nozzle assembly also includes .a'

strainer for filtering out deleterious matter entrained in the pressurized fluid to prevent such matter from passing to the rectangular orifice. In high-pressure liquid nozzle assemblies, the effectiveness of the high-pressure liquid stream, apart from the pressure of the liquid, is dependent upon properly orientating the rectangular orifice with respect to the work against which the fluid is to impinge. Since the nozzle member forming the rectangular-shaped orifice is rotated in the assembly thereof with a securing means, such as a cap nut, upon tightening of the latter, proper relocation of the rectangular-shaped orifice with respect to the work poses a tremendous problem. Frequently, a mechanic employs a screw driver or similar instrument which he inserts in the orifice to hold the nozzle member against turning while reassembling the nozzle assembly. This technique of assembly very often results in damage to the peripheral edge portion of the member defining the orifice so that a proper, highly effective fluid stream is not emitted from the orifice.

Another disadvantage of present nozzle assemblies is that the nozzle member has to be driven by blows delivered thereto from the threaded cap which was turned on the housing to secure the nozzle in the housing. Such nozzle members were of frusto-conical configuration and of two parts and were adapted to seat in a tapered bore in the threaded cap. The frictional engagement between the nozzle member and the cap frequently required a rapping of the cap and the nozzle member to effect their separation. Separation could also be achieved by driving the nozzle member from the cap by blows delivered thereto by a blunt instrument. This frequently resulted in damage to the nozzle member and/or the cap.

In view of the foregoing, it is an object of the present invention to provide a high-pressure liquid nozzle assembly wherein removal and replacement of the components of the nozzle are easily achieved with proper alignment of and no damage to the nozzle orifice.

Another object of this invention is to provide a highpressure liquid nozzle assembly wherein the internal components including the nozzle member and the strainer, are removable and replaceable as a unit in the housing.

A further object of the present invention is to provide a nozzle assembly wherein, upon reassembly thereof, proper orientation of the orifice is achieved automatically.

A feature of this invention is the cylindrical shape of the nozzle member and its being bonded in a holder or cage so that it is removable with the cage from the nozzle assembly housing.

Another feature is the interconnection of the internal components of the assembly so that they are slidably receivable in and removable from the nozzle assembly housing as a unit.

3,273,8fl5 Patented Sept. 20, 1966 Accordingly, the present invention contemplates a novel nozzle assembly comprising a hollow, open ended housing or casing which is connected at one end to a pressurized liquid receiver and includes a socket which opens outwardly at the other end of the housing, such as a manifold, and is open at the opposite or distal end thereof. The interior of the socket is dimensioned to have inserted and receive through its open, other end a cylindrical member including a nozzle subassembly and a strainer subassembly connected together as a unit. There is stop means in the housing for limiting inward movement of the member in the socket. A cap having a central opening is secured to the housing to retain the nozzle and the strainer subassemblies within the housing.

The nozzle subassembly comprises a nozzle disc or plate having an elongated, slit-like, pressurized liquid outlet or discharge port secured within a hollow, cylindrical holder or cage.

The strainer subassembly comprises a body member having a centrally located bore which is counterbored to receive a strainer of tubular construction.

The nozzle subassembly and the strainer subassembly are secured together in any suitable manner, such as by therading, so that the bore of the body member communicates with the discharge port.

To provide for proper orientation of the discharge port with respect to the work against which the liquid emitted from the discharge port is to strike, the nozzle subassembly is provided with means for slidably engaging the locating means on the housing and thereby fixing the location of the discharge port.

The invention will be more fully understood from the following description when considered in. connection with the accompanying drawings in which:

FIG. 1 is a fragmentary view of a descaling apparatus employing nozzle assemblies according to this invention;

FIG. 2 is -a cross-sectional view, on an enlarged scale, taken along line 2-2 of FIG. 1;

FIGS. 3 and 4 are transverse, cross-sectional views taken along lines 3-3 and 4-4L respectively, of FIG. 2;

FIG. 5 is a fragmentary view showing an alternate means for securing the nozzle housing to a manifold;

FIG. 6 is a fragmentary view showing another alternative means for securing the nozzle housing to a manifold; and

FIG. 7 is a fragmentary view of a still further alternative means for securing the nozzle housing to a manifold.

Now referring to the drawings and more particularly to FIGS. 1 to 4, inclusive, 10 generally designates a nozzle assembly according to this invention which, as illustrated in FIG. 1, may be connected to a manifold 12 of a descaling apparatus.

While nozzle assembly 10 is shown in FIG 1 and will be described as part of a descaling apparatus, it is to be understood that the nozzle assembly 10 has broader application and may be employed in screen-cleaning apparatuses and other hydraulic-spraying devices without departing from the scope and spirit of the invention.

As best shown in FIGS. 2 and 3, nozzle assembly 10 comprises a housing 14 which has an axial bore 16 extending therethorugh. The housing is secured to a boss 18 which may be formed integral with manifold 12 or may be a separate member suitably secured to the manifold by welding, as at 24 or by other suitable means. Housing 14 may be secured to boss 18 by welding, as at 22, or secured by the alternative means shown in FIGS. 5, 6, and 7 and described hereinafter. Boss 18 has an opening 24 which extends therethrough and is in register with a hole 26 in the wall of manifold 12. Opening 24 is also in register with bore 16 of housing 14. The distal end portion of housing 14 is externally threaded at 28 to receive an internally threaded, cup-shaped cap nut 30. Bore 16 of housing 14 is provided with an outwardly opening socket defined by a counterbored portion 32 to form inwardly from the open, distal end portion of the housing an internal, annular shoulder or stop 34. Counterbored portion 32 is adapted to slidably receive therein a strainer subassembly 36 and a nozzle subassembly 38 connected together as a unit as will be hereinafter described.

Nozzle subassembly 38 comprises a nozzle element 39 and a nozzle carrier member 40. Nozzle element 39 is preferably of one-piece construction, as in disclosed in US. Patent No. 3,101,906, and is cylindrical in configuration. An axial fluid-flow path 41 is provided in nozzle element 39, which path is defined at the inlet end 42 by a circular wall and at the discharge or outlet end by an elongated, rectangular wall to define a discharge port 43. The configuration of fluid-flow path 41 progressively and uniformly changes from the circular configuration at the inlet end 42 to the rectangular shape at the discharge port 43. This transition of the configuration of the flow area of fluid-flow path 41 may be accomplished as disclosed in US. Patent No. 3,101,906 or by employing semi-circular side walls for substantially the full length of the flow path rather than flat walls connected by quarter-round fillets.

Nozzle element 39 is inserted and suitably secured in an axial bore 44 in nozzle carrier member 40. As illustrated, nozzle element 39 may be bonded by an epoxy cement 45 or secured in any other suitable fluid-tight manner in bore 44. Bore 44 is of reduced diameter slightly inwardly of one end thereof to provide an annular shoulder 46 which serves as a seat for nozzle element 39. Upstream of nozzle element 39, bore 44 is provided with a thread counterbored portion 47 by which nozzle subassembly 38 is connected to strainer subassembly 36.

Strainer subassembly 36 comprises a body 48 and a strainer 49. Body 48 has a diameter equal to counterbored portion 32 of bore 16 of housing 14 and a reduced diameter portion 50 which is threaded to mate with the thread of counterbored portion 47 of nozzle carrier member 40. Body 48 has an axial bore 51 which is counterbored and threaded at 52 to receive strainer 49.

Strainer 49 is of any conventional construction and may be, as shown, a tubular member closed at one end and having a plurality of circumferentially spaced slots 53 which extend through the wall of the strainer to communicate bore 16 with the interior of strainer 49. Strainer 49 is threaded adjacent its open end so that it can be turned into the mating threads of counterbored portion 52 of axial bore 51.

To seal the interstices between the outer peripheral surfaces of nozzle carrier member 40 and body 48 and the surface of counterbored portion 32, carrier member 40 is provided with an annular groove in which is seated an O-ring seal 54.

To provide for the orientation of elongated discharge port 43 of nozzle element 39 in relation to the work A (for example, as is shown in FIG. 1 for illustrative purposes), diametrically opposed, hollow pins 55 are mounted in nozzle carrier member 40 to project from the periphery thereof. As best shown in FIGS. 2 and 3, each of the pins 55 is adapted to fit into one of a pair of diametrically opposed grooves 56 in the distal end of housing 14. The relationship of discharge port 43 with regard to grooves 56 is predetermined and fixed when factory assembled by proper positioning and securing of nozzle element 39 in nozzle carrier member 40. For example, nozzle element 39 may be bonded in carrier member 40 so that the longer dimension of discharge port 43 extends normal to the longitudinal axes of pins 55. This method of fabrication insures that the pattern of the fluid stream B (see FIG. 1) emitted from discharge port 43 assumes the desired relationship to the work A.

In the assembly of a hi gh-pressure spray nozzle system as shown in FIG. 1, manifold 12 is positioned so that the longitudinal axis of each housing 14 which is secured to a boss 18 extends at a desired predetermined angle with respect to a vertical line extending from the work A. In addition, each housing 14 is positioned so that grooves 56 and the longer dimension of discharge port 43 lie in a desired direction in relation to the work A. This predetermined, assembled position insures that the high-pressure fluid stream B from each of the nozzle assemblies 10 impinges the work A with the force and impact desired and at the proper angle.

When replacement of one or more nozzle assemblies is necessary because of wear or clogging of fluid-flow path 41, clogging or damage to strainer 49, and/or for any other reason, such removal and replacement are accomplished with ease, quickly, and with automatic predetermined orientation of the high-pressure fluid stream B with respect to the work A. Removal and replacement are achieved by the removal of cap nut 30 from housing 14. With the removal of cap nut 30, strainer subassembly 36 and nozzle subassembly 38 are free to be removed from the housing as a unit. If due to corrosion or the accumulation of solid material at shoulder 34 the strainer subassembly and the nozzle subassembly do not drop from the housing, a suitable tool may be inserted in hollow pins to free the subassemblies and thereby effect the removal of the strainer and the nozzle subassemblies as a unit. In like manner, the strainer and the nozzle subassemblies of inverted nozzle assemblies 10 which extend upwardly from manifold 12 may be removed by the same method. Thereafter, each new, factory-assembled strainer subassembly 36 and nozzle subassembly 38 unit may be inserted in an associated housing 14. Each of the units is automatically orientated in the desired predetermined position relative to the work by the interlocking engagement of pins 55 and grooves 56 of housing 14.

It is believed now readily apparent that a novel highpressure nozzle assembly has been provided which can be quickly and easily repaired and where the discharge port or orifice of the new nozzle subassembly is automatically positioned in the same relationship to the work as the replaced discharge orifice assumed with respect to the work. This automatic orientation of the nozzle subassembly obviates damage, in the field, to the discharge port or orifice into which a tool may be inserted by a workman in the course of reassembly of the nozzle assembly.

In FIGS. 5, 6, and 7 are shown alternative means for securing the housing of the nozzle assemblies to a manifold.

In FIG. 5 boss 18A of manifold 12A is internally threaded at 60 to receive the end of a housing 14A, the end of the housing being threaded at 61 to mesh with threads 60.

In FIG. 6 manifold 12B is provided with a flanged connection 62 in place of a boss. This flanged connection in FIG. 6 is shown as being integral with manifold 12B, but obviously need not be integral with the manifold. Flanged connection 62 may be a separate member connected to the manifold in any suitable manner, such as welding, threading, bolting, or the like, without departing from the scope and spirit of this invention. An internally threaded ring 63 is threaded at 64 to the end of housing 14B of the nozzle assembly and bolted to flanged connection 62 by a plurality of bolts 65 (only one of which is shown). The space between the adjacent surfaces of flanged connection 62 and ring 63 may be sealed by a suitable gasket 66 or other means interposed between those surfaces.

In FIG. 7 is shown a further alternative means of securing the nozzle assembly to a manifold. As shown, housing 14C is substantially shorter in length than housing 14 shown in FIG. 2 and is Welded at 67 within an opening 68 of a manifold 12C. This construction has the advantage of positioning the strainer 49C directly within the interior of manifold 12C where fouling of the strainer will not occur so readily as in nozzle assembly shown in FIG. 2.

Although several embodiments of the invention have been illustrated and described in detail, it is to be understood that the invention is not limited thereto. Various changes can be made in the arrangement of parts without departing from the spirit and scope of the invention as the same will now be understood by those skilled in the art.

I claim:

1. A pressurized fluid nozzle assembly comprising:

(a) a conduit means connected to a source of pressurized fluid,

(b) a hollow, opened ended housing connected at one end to said conduit means and communicating with the latter to receive the pressurized fluid, said housing including an outwardly opening socket at its other end,

(c) a cylindrical assembly member inserted within and slidably and removably seated within said socket,

(d) stop means formed in said housing interiorly thereof and contacting said cylindrical assembly means to limit inward movement of said assembly member in said socket,

(e) a nozzle means having a fluid flow path therethrough and including a discharge orifice adapted to discharge a non-circular spray, said element being carried within said cylindrical assembly member so as to receive and conduct the pressurized fluid, as a spray, into the atmosphere (f) a first hollow positioning means carried by and extending laterally outwardly of said cylindrical assembly member,

(g) a second positioning means formed on the other end portion of said housing and comprised of a lateral recess receiving said first positioning means and coacting therewith to fix the cylindrical assembly member in a predetermined angular position within said housing,

(h) holding means secured to the housing and bearing on said cylindrical assembly member to hold said assembly member and said nozzle in said housing, such that the non-circular spray from said discharge orifice is angularly oriented in relation to the fluid conduit means.

2. The apparatus of claim 1 wherein a filter means is secured to said cylindrical member and is insertable and removable from the housing simultaneous with the cylindrical member.

3. The apparatus of claim 1 wherein said holding means is a cap nut having a central opening therein in register with the discharge orifice to permit the pressurized fluid to flow therethrough.

4. The apparatus of claim 1 wherein said conduit means is provided with a boss to which the housing is connected.

5. The apparatus of claim 1 wherein said conduit means is provided with a flanged boss, a complementary flange on said housing, and means for drawing said complemen tary flanges together and thereby securing the housing to the conduit means.

6. A pressurized fluid nozzle assembly comprising:

(a) conduit means connected to a source of pressurized fluid,

(b) a tubular, open-ended housing connected at one end to said conduit means,

(c) a cylindrical assembly slidably and removably receivable in the distal end portion of said housing,

(d) a nozzle element having a fluid-flow path and a discharge orifice adapted to discharge a non-circular spray removably secured in a predetermined position within said cylindrical assembly,

(e) said fluid-flow path and discharge orifice being in communication with the interior of the housing to receive the pressurized fluid and discharge same, as a spray, to the atmosphere,

(f) a strainer body having an opening therein,

(g) said strainer body being secured to said cylindrical member so that said opening registers with the fluidflow path in said nozzle element,

(h) strainer means secured to said strainer body so as to communicate the interior of the housing with the opening in said strainer body,

(i) at least one radial groove in the distal end of said housing opening outwardly toward said end,

(j) at least one hollow pin carried by said cylindrical assembly member and extending laterally therefrom and engaging said groove to thereby locate the entire assembly in a predetermined angular position within said housing, and

(k) cap means secured to said housing and engaging the cylindrical assembly member and hold the entire assembly in said housing, such that the noncircular spray discharge from said orifice is angularly oriented at a selected position with respect to said conduit means.

References Cited by the Examiner UNITED STATES PATENTS 2,018,819 10/ 1935 Thompson 239-597 2,024,936 12/1935 Loughlin 239-600 2,629,632 2/1953 Munson 239590.5 3,009,655 11/1961 Palmer 239-600 3,101,906 8/ 1963 Webber 239-5'92 FOREIGN PATENTS 438,628 11/ 1935 Great Britain.

EVERETT W. IQI'RBY, Primary Examiner.

Claims

1. A PRESSURIZED FLUID NOZZLE ASSEMBLY COMPRISING: (A) A CONDUIT MEANS CONNECTED TO A SOURCE OF PRESSURIZED FLUID, (B) A HOLLOW, OPENED ENDED HOUSING CONNECTED AT ONE END TO SAID CONDUIT MEANS AND COMMUNICATING WITH THE LATTER TO RECEIVE THE PRESSURIZED FLUID, SAID HOUSING INCLUDING AN OUTWARDLY OPENING SOCKET AT ITS OTHER END, (C) A CYLINDRICAL ASSEMBLY MEMBER INSERTED WITHIN AND SLIDABLY AND REMOVABLY SEATED WITHIN SAID SOCKET, (D) STOP MEANS FORMED IN SAID HOUSING INTERIORLY THEREOF AND CONTACTING SAID CYLINDRICAL ASSEMBLY MEANS TO LIMIT INWARD MOVEMENT OF SAID ASSEMBLY MEMBER IN SAID SOCKET, (E) A NOZZLE MEANS HAVING A FLUID FLOW PATH THERETHROUGH AND INCLUDING A DISCHARGE ORIFICE ADAPTED TO DISCHARGE A NON-CIRCULAR SPRAY, SAID ELEMENT BEING CARRIED WITHIN SAID CYLINDRICAL ASSEMBLY MEMBER SO AS TO RECEIVE AND CONDUCT THE PRESSURIZED FLUID, AS A SPRAY, INTO THE ATMOSPHERE (F) A FIRST HOLLOW POSITIONING MEANS CARRIED BY AND EXTENDING LATERALLY OUTWARDLY OF SAID CYLINDRICAL ASSEMBLY MEMBER, (G) A SECOND POSITIONING MEANS FORMED ON THE OTHER END PORTION OF SAID HOUSING AND COMPRISED OF A LATERAL RECESS RECEIVING SAID FIRST POSITIONING MEANS AND COACTING THEREWITH TO FIX THE CYLINDRICAL ASSEMBLY MEMBER IN A PREDETERMINED ANGULAR POSITION WITHIN SAID HOUSING, (H) HOLDING MEANS SECURED TO THE HOUSING AND BEARING ON SAID CYLINDRICAL ASSEMBLY MEMBER TO HOLD SAID ASSEMBLY MEMBER AND SAID NOZZLE IN SAID HOUSING, SUCH THAT THE NON-CIRCULAR SPRAY FROM SAID DISCHARGE ORIFICE IS ANGULARLY ORIENTED IN RELATION TO THE FLUID CONDUIT MEANS.