US2255119A

US2255119A - Nozzle

Info

Publication number: US2255119A
Application number: US257447A
Authority: US
Inventors: Joseph E Kennedy
Original assignee: Kennedy Van Saun Manufacturing and Engineering Corp
Current assignee: Kennedy Van Saun Manufacturing and Engineering Corp
Priority date: 1939-02-20
Filing date: 1939-02-20
Publication date: 1941-09-09
Anticipated expiration: 1958-09-09

Description

P 1941- J. EQKENNEDY 2,255,119

NOZZLE Filed Feb. 20, 1939 INVENTOR.

Joseph E. Kennedy BY 5 Z A,

ATTORNEY Patented Sept, 9, 1941 NozzLE Joseph E. Kennedy, New York, N. Y., assignor to Kennedy-Van Saun Mtg. & Eng. Corporation, New York, N. Y., a corporation of Delaware v Application February 20, 1939, Serial No. 257,447

4 Claim.

This invention relates to valve controlled nozzles to admit fiuid, such as air or steam under trolled by a valve normally urged to position to close and shut off the outlet from the container, and the valve is actuated to nozzle outlet opening position andair discharged from the nozzle by the pressure of the air admitted into the nozzle casing. The nozzles are mounted upon the bottom of the container, which is of hopper form,

and the air discharged from the nozzles along the wall of the container to not only aerate the material in the container but also releas from the container wall material, particularly cement 01 flour, which may have adhered thereto and thus assure the discharge of all the material from the container. The valve mechanism in my'hereinbefore mentioned application includes a member of resilient material, such as rubber, for the valve to seat against to assure closing and shutting oil the nozzle from the container. The resilient member is exposed to the interior of the container and the valve is carried by a stem provided with a longitudinal recess or recesses to discharge the air in a predetermined direction or directions from the nozzle. Due to exposure of the resilient member to the interior of the container there is a possibility of the material lodging on the same i to .the interior of the container.

with the result that the valve will not positively seat thereon and when the air under pressure is shut ofl from the nozzle the pressure in thecontainer causes the material to pass from the container through the nozzle outlet into the nozzle. Furthermore, due to the valve spring resisting the actuation of the valve to'outlet opening position by the pressure of the air there is efiected a distortion of the resilient member and a re-- stultant uncontrolled discharge of the air from I the nozzle.

It is an object of the invention to provide in a nozzle of this character improved adjustable outlet control valve means to assure the discharge of a stream of air under pressure in predetermined direction at a right angle and perpendicu- It is a further object of the invention to provide improved outlet control valve means for nozzles of this character including a member of resilient material, such as rubber, to assure positivelysealing the outlet, and the valve means arranged to carry and confine the resilient member within the valve means whereby it will not be exposed It is another object of the invention to provide an improved nozzle of this character including a casing having an inlet for the admission of air under pressure into the casing and a tubular projecting outlet portion through which to discharge the air from the nozzle, and valve means including a stem extended through the tubular outlet portion into the casing, saidstem carrying a cup member slidably engaging the tubular outlet portion exterior of the casing and having a recess extended inwardly from the edge of the flanges thereof to constitute the discharge orifice of the nozzle adapted to be placed into and out of communication with the bore in the tubular outlet portion and vary the area of the orifice and discharge of a stream of air from the nozzle in a direction perpendicular to the axis of the nozzle, and said cup member carrying therein a member of resilient material adapted to be seated against the end of the tubular outlet portionof the casing to positively seal the discharge orifice from the casing and arranged to direct the air to the discharge orifice, and the provision of means to rotatably adjust said cup member about the tubular outlet portion to position the discharge orifice to discharge a stream from the nozzle in diilerent angular directions relative to the axis of the nozzle.

Other objects and advantages of the invention will hereinafter appear.

In the drawing accompanying and forming a part of this application,

Figure l is a longitudinal section of a nozzle embodying the invention and showing the parts in normal position with the valve mechanism closing the nozzle outlet.

Figure 2 is a view similar to Figure l but showing the valve mechanism actuated to open the nozzle outlet; and

Figure 3 is a cross section taken on the line 3-3 of Figure 1 looking in the direction of the arrows.

In carrying out the embodiment of the invention illustrated in the drawing there is provided a tubular body or casing '4 externally screw threaded at the opposite ends, as at 5 and 6., The screw threaded portion 6 is adapted for connection with a screw threaded opening in the wall of reduced diameter to provide a shoulder at said end of the bore, and shown as effected by a ring 8 engaged in the end of the body and secured therein by suitable means, as by welding. as shown at ill.

A sleeve or tubular outlet member ll through and projecting from the end of the body. The inner end'of said member is of increased diameter relative to the portion ii and substantially equal to the internal diameter of the body and providing said member with a shoulder opposed to the-shoulder formed by the ring 8 to prevent movement of said outlet member outwardly from the body 4, a packing gasket II of suitable yieldingmaterial, such as rubber, being interposed between said shoulders to provide a fluid tight connection between said parts. The external diameter of the projecting portion ll of the outlet member H is reduced to a diameter less than the internal diameter of the ring. The outlet member II is urged toward the ring 8 by a sleeve l3 having an external 8 diameter substantially equal to that of the bore in the body 4 and loosely engaged therein and of a length to extend beyond the end 5 of the body 4 opposite the outlet member ll. Aband l4 of yielding material, such as rubber, of a width equal to or slightly greater than the portion of the sleeve projecting from the end of the body 4 is interposed between said projecting portion of the sleeveand the coupling member 8, and a fluid tight seal is provided between said sleeve, the body 4 and coupling member 8 by said annular band l4 and a gasket l5 of yielding material, such as rubber, interposed between the ends of the sleeve l3 and the band 14 and the shoulder formed by the threaded opening of reduced dimeter in the coupling member 8. By screwing the coupling member 8 onto the body 4 a compression force is applied to the gasket l5 and the band l4 which in turn is transmitted through the sleeve if to the outlet member II and thereby applying a compression force to the gasket l2 and providing a fluid tight joint between the outlet member II and the-ring 9.

To control the discharge of air from the body through the outlet member II in a stream di-,

rected at a right angle and perpendicular to the axis of the nozzle, a cup member I8 is mounted on the end of a stem II by engaging a reduced and of the stem in an opening axially of the cup member and securing it thereto by suitable means, as by welding, as shown at l8.- The cup member i8 is arranged exteriorly of the outlet member II and the stem is extended'through the bore in said outlet member into the body 4,

the stem being of less diameter than said bore, as shown. The flange of the cup member slidably engages the projecting portion I l' of the outlet member and is shown as telescoping thereover. An annular member IQ of yielding material, such as rubber, is conflned within the cup member It, a peripheral portion of which member is of a thickness less than the depth of the is mounted in the body with a portion ll' extended flange of the cup member and is engaged upon a portion of reduced diameter ll of the=stem and retained thereon'in abutting relation to the shoulder formed by said reduced portion by the cup member. The outer face of the yielding member l9 declines slightly from the periphery toward the center thereof, as shown at It. The

the opening, as at l9b, said projecting portion engaging a recess in the wall of the bore in the outlet member extended inwardly from the end of the projecting portion II to an extent equal to the length of said projecting portion Isa. The flange of the cup member 16 is provided with a recess 28 shown as extended inwardly from the edge of the flange to or slightly beyond the annular portion of the yielding member i9, said recess constituting an outlet orifice and the resilient member I 8 is arranged within the cup member with the projecting portion Ha disposed diametrically opposite said recess. The resilient member I9 is adapted to be seated against the end of the outlet member II to seal the same from the cup recess or discharge oriflce 20 which discharge orifice in said position of the parts is covered by the outlet member ll.

' The cup member with the member of yielding i into and choking the nozzle.

material is normally urged to position to engage theyielding member with the end of the outlet member by a spring 2| coiled about the stem ll within the tubular body 4 and confined between I the outlet member II and a head 22 fixed to the end of the stem within the body, the head being of less diameter than the body and the stem'of a length so that the head in said position of the parts will be in spaced opposed relation to the inlet in the coupling member 8, as shown in Figure 1.

To limit the outlet opening movement of the valve means and maintain the flange of the cup member IS in sliding engagement with the projecting portion ll of the outlet member in all positions thereof, and to also hold the valve parts against rotative movement to discharge the stream from the recess or discharge orifice 28 in predetermined direction perpendicular to the axis; of the nozzle, diametrically opposite slots 23 are extended into the end of the sleeve l3 opposite the end engaging the outlet member and in which slots the ends of a pin 24 extended through the head 22 slidably engage.

By the construction of the parts described the resilient member i9-when seated against the end of the outlet member ll under the influence of the spring 2| and the pressure of the material in the container also serves to exert a closing 'pressure upon the cup member It, thus positively sealing the outlet member through the discharge oriflce 20 from the container and preventing material entering from the container Also by the arrangement of'the parts the valve mechanism may be readily removed from the tubular body orcasing 4 for inspection or renewal of parts without removing the body from the container and which is effected by removing the coupling member 8 and withdrawing the parts through said end of the body.

In operation the air under pressure admitted into the body l through the inlet opening in the coupling member 8 and the air passing from the body through the space about the stem I? in the outlet member ll exerts a force upon the head 22 and the cap member is through the resilient member l9 to actuate the valve means against the action of the spring 8| to move the resilient member 19 out of engagement with the outlet member ii and open the discharge orifice 22 and discharge the air therethrough from the outlet member, as shown in Figure 2. The actuation of the valve means and extent of opening the discharge oriilce 20 to the outlet member H is in accordance with the pressure of the air. By the arrangement of the declining surface i9b on the projecting portion 19a of the resilient member l9 relative to the discharge orifice 26 theair passing through the outlet member H is directed toward the discharge orifice, and by the arrangement of the engagement of said projecting portion 19a with the outlet member-the possibility of air passing through the contacting parts into the nozzle is reduced to a minimum. Also by the arrangement of declining the outer end of the resilient member i9 :the inherent resiliency of the material of said member tends to urge the same into sealing engagement with the outlet member II.

It is desirable and essential that the air be discharged from the nozzle 26 in predetermined direction, and under difl'erent conditions it is desirable to discharge the stream in diil'erent directions from the nozzle relative to a wall of the container. To indicate the position of the discharge orifice 2d and direction of discharging the stream from the nozzle the head 22 is provided with an indicator notch 25, said notch being arranged in line with the recess 29 in the flange of the cup member i6. By the arrangement of loosely mounting the sleeve IS in the body i and the

pin andslot connection

23, 24 between the head 22 and said sleeve, the valve mechanism may be rotatably adjusted about its axis and adjust the discharge orifice 20 to different angular positions relative to the axis of the nozzle.

Having described my invention, I claim:

1. In a nozzle including a casing having an inlet to admit air under pressure into the casing and an outlet through a tubular portion proiecting from the casing, valve means for controlling the outlet and discharge of air through 'the casing, comprising a cup member slidably engaging the projecting portion and having a recess in the flange thereof, a member of yielding material in the cup member adapted to seat against the end of the projecting portion and seal the outlet, said cup member being normally urged to position with the projecting portion engaging the yielding member and the projecting portion covering the recess in the flange oi the cup member and co-operating with the cup member to seal said yielding member therein, and said valve means actuated by the pressure of the air admitted into the casing acting on the yielding member in the cup member to unseat the yielding member from and place the flange recess in communication with the projecting portion to discharge the air-throughsaid flange recess in a stream laterally from the casing perpendicular to the axis of the valve means.

2. In a valve controlled nozzle including a cascontrol the outlet and discharge of airthrough' the casing comprising a stem of less diameter. than and extended through the outlet portion into the casing, a cup member carried by the stem exterior of the casing with the opening opposed to and slidably engaging the tubular portion and having a recess in the flange, a member of resilient material in the cup' member with an annular portion at the periphery disposed within the recess adapted to seat against the end of the outlet portion and seal the outlet, a

- spring normally urging said valve means to posiing having an inlet to admit air under pressure tion with the resilient member engaging the end .of and the cup recess covered by the outlet portion, and said valve means adapted to be actuatedagainst the action of the spring by the pressure'of the air admitted into the casing acting on the resilient member in the cup member to unseat the resilient member from and uncover the recess by the outlet portion and discharge the air'through the flange recess in a stream laterally from the casing perpendicular to the axis of the valve means.

3. In a nozzle, a tubular body, a tubular outlet" member mounted in and extended through one end of the body, a coupling member having fluid tight connection with the opposite end of the body and adapted to admit air under pressure axially into the body, and valve means for controlling the discharge of the air through the body comprising a cup member slidably engaging the outlet member exterior of the body and having a recess extended inwardly from the edge of the flange thereof to constitute a discharge orifice.

adapted ,to be covered and uncovered by and placed out of and into counicati'on with the outlet member and discharge the air from thenozzle in a stream laterally and perpendicular to the axis of the nozzle, a stem dried at one end centrally within the cup member extended into the body through and having a diameter less than the opening in the outlet member, a member of resilient material confined in the cup member having an annular peripheral portion of less thickness than the depth of the cup flange adapted to engage the end of and seal the outlet sliding engagement with the outlet member and rotatably adjust the valve means about the axis oi the nozzle to position the discharge orifice in of the air admitted into the body acting on and moving the resilient member out of engagement with and open thedischarge orifice to the outlet member.

4. Ida valve controlled nozzle including a casing having a tubular outlet portion projecting therefrom and means connected to the casing opposite the outlet portion to connect the casing to a source of and admit air under pressure into the casing, valve means for controlling the discharge of air through the oiitlet portion, comprising a stem. of less diameter than and ext tended through the outlet portion into the body. .a cup member having a recess extended into the end of the flange fixed centrally thereof to the end of the stem exterior of the casing with the open end opposed to and the cup flange slidably engaging the outlet portion to cover and uncover the recess by the outlet portion to shut of! and open communication between said recess and 10 ing on the cup inmber against the action oi said spring to position the cup member to uncover the flange recess and open communication between the outlet portion and said recess and discharge the air in a stream through said recess laterally and perpendicular to the axis of the nozzle, and a member of resilient material in the cup member having an annular portion at the periphery of less thickness than the depth of the cup flange adapted to seat against the end of the tubular outlet portion and having a segmental portion projecting therefrom within said annular portion disposed opposite the flanged recess slidably engaging in said outlet portion and arranged to direct the air from said outlet portion laterally to said flange recess.

JOSEPH E. KENNEDY.