US2252635A - Ladle pouring nozzle - Google Patents

Description

R. KARR LADLE POURING NOZZLE Filed March 5, 1940 Patented Aug. l2, 1941 UNITED STATESl PATENror-Flcs LADLE roUanvG NozzLE Raymond Karr, Johnstown, Pa. 'Applicants March s, 1940, sensi Ne. 322,401

somma. (01.22.45)

This invention relates to the pouring of molten metals, and more particularly to a means to facilitate the placement of a nozzle in a bottom pouring ladle used in the steel industry.

I -An object of this invention is to provide in combination with a ladle and a pouring nozzle a holding means for the nozzle which is adapted to be built into the refractory walls of the ladle.

Another object of this invention is to provide l in combination with a ladle and a pouring nozzle a refractory socket within which the nozzle is adapted to be positioned.

A further object of this invention is to provide a refractory socket .or nozzle holding member which is adapted to be built into the refractory bottom wall of the ladle,4 the nomle holding with a concave recess II which is round in plan,

as shown in Figure 2.

member being provided with an outwardly opening recess or socket within whichthe nozzle may r be positioned and from which the nozzle maybe removed without disturbing the contents of theladle, or while the ladle is still in a heated condition.

.With vthe foregoing and other objects invlew, f vthe invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

l ing II. The lining Il may be formed of bricks. or other suitable refractory material. The bottom wall I Il of the ladle vis provided/,with an opening I3, and the lining Il is provided with an opening I2 alining with the opening I2.

A flanged plate Il is secured to theouter side 4oi' the bottom walll IIl by means of fastening devices I5 in the form of rivets or the like, the. .plate I4 forming a support for both the nozzle socket or holding member and the nozzle. v The opening I2 is Ypreferably square. and when the lining II is placed within the ladle a square nozzle brick, generally designated as I8 is inserted ln the opening I2. The brick I8 is formed oi' refractory material which may be similar to the,

materiale: which the umng is formed. and

vthe bricklt on the. inner end thereof is providedA parts throughout the sev-y like.

In the axial center of the recess II there is formed a cylindrical opening Il "of relativelysmall diameter through which the molten metal.

is initially adapted to pass. vA plug or stopper I9, of conventional construction is adapted to seat in the bottom of the recess, I'I and to close'the opening I l. The stopper I9 is actuated in a confventional manner and as the u ofthis stopper Il is well known -it ls not considered necessaryv to set forth in detail the manner in which this stopper isI supported within, the ladle, or the manner in which itis operated.

The brick I8 at a point slightlybelow the bottom of the recess I1 is prqvided with. a second cylindrical opening or socket 20 which is substantially larger'in diameter than the opening I8,

forming a shoulder 2| extending laterally of the opening I8. The opening or socket 20 opens through the bottom of the brick |6, and alines with an opening 22 formed in the plate Il.

' A nozzle, generally designated as 22. is adapted to seat in the socket 2l, the inner end of the nozzle 23 abutting against the shoulder 2|. The outer or lower portion of the nozzle 23 is adapted to extend through the opening 22, and a holding plate- 24 'engages' against the lower or outer end of the nozzle v22. The plate 24 is adapted to be detachably secured to the plate." by means of' fastening` devices 2S in the form of bolts or the 22 being formed with a reduced portion 21 pro- Jecting downwardly through the opening 2B.

The nozzle* 22 is formed at the inner end thereof with a frusta-conical mouth 2Ii,a reduced cylindrical passage 29. and an enlarged cy lindrical passage 2l which opens through the lower end of the nozzle 22. The passage 29 is substantiallyshorter in length than the passage 30 so as to restrict the flow of the molten metal.

-The passage 30 forms a combined discharge mouth and a splash chamber which preventsthe scattering of slag particles `or the like.

'I'he nozzle 221s one form of no'mle which may be used with the brick II, and it will be understood that the nozzle 23 is merely illustrative of how a nozzle of this character may be mounted within the brick Il. v

y' The diameter of the base of the frusto-conical mouth 2l of the nozzle 22fissubstantially equal to the diameter of the outlet opening' I'8 inthe brick It, and the inner'end'oi' the nozzle 23 .'dts` 'snug against the shoulder 2i so that no molten The plate 24 may be provided with an opening 20 coaxial with the socket 20, the nozzle l metal will flow about the outer surface oi the nozzle 23.

In the use of this nozzle brick and nozzle, the brick I6 is embedded in the lining Il during the formation of the lining Il. The nozzle 2l may be inserted in the socket 2l by removing the plate 2l from the plate il and securing the plate I4 about the reduced lportion 21 of the nozzle 23. In the-event the nozzle 23 should become frozen, clogged, broken or otherwise unuseable and there should be molten metal stili within the ladle, or the ladle should be heated from a discharged load of metal, the nozzle 22 may readily be removed without disturbing the contents of the ladle or without waiting for the ladle to cool,

spaanse axially apertured nozzle member formed with a body engaging in said socket and with a reduced nozzle at its outer'end, and a holding plate removably fixed to said first plate having an aperture through which said nozzle projects.

`2. In combination, a ladle, a refractory wall in the ladle, a. nozzle brick embedded in said wall, said ladle having an opening and said brick extending outwardly through and beyond said opening, a plate fixed to said ladle and formed with an outwardly offset seat to receive the outer end of said brick, said brick having a concave recess in its inner end and a socket extending `inwardly from its outer end and terminating by reinserting the stopper so as to close up the outlet I8. Where the ladle is empty but still heated it will not, of course, be necessary to apply the stopper i9. The nozzle clamping or holding plate 24 may be removed by withdrawing the bolts or fastening devices 25, after which the nozzle 23 may be withdrawn from below the ladle. Ifthe nozzle' 23 should stick in the socket 20 it may be chipped out without damaging the nozzle brick I5.

With a nozzle brick or socket of this character the pouring operations will be speeded up as it will not be necessary after each operation to wait until the ladle cools before inserting a new nozzle, and it will not be necessary to pack the nozzle in alum or other y similar material which at present is inserted from the upper end of the ladle and which process requires the cooling of the ladle before the nozzle can be inserted. With a nozzle brick or socket constructed according to this invention, if the ladle is still hot a new nozzle may be quickly inserted by removing the clamping or holding plate 24, withdrawing the old nozzle and replacing it with a new nozzle.

It is, of course understood that various changes and modifications may be made in the hereinbefore described embodiment of this invention, such changes and modincations being limited only by the scope ofthe appended claims.

What is claimed is:

1. In combination, a ladle, a refractory wall in the ladle, a nozzley brick embedded in said wall and having a'length greater than the thickness of said wall, said ladle having an opening and said brick extending through and beyond said opening, a plate-xed to said ladle` and formed with an outwardly offset seat to receive the outer end of said brick, said brick having a concave recess in itsinner end and a socket extending inwardly from its outer end and terminating outwardly of said recess, said brick also having a passage comV l municating said recess with said socket, an

outwardly of said recess, said brick also having a passage communicating said recess with said socket, an axially apertured nozzle member formed with a. body engaging in said socket and with a reduced nozzle at its outer end, the inner end- Of said nozzle member having an inverted conical recess confronting said passage, and a holding plate removably iixed to said first plate l having Van aperture through which said nozzle projects.

3. In combination, a ladle, a refractory wall in the ladle, a nozzle brick embedded in said wall, said ladle having an opening and said brick extending through said opening, a plate fixed to said ladle and formed with a seat to receive the outer end of said brick, said brick having a concave recess in its inner end anda socket extending inwardly from its outer end and terminating outwardly of said recess, said brick also having a passage communicating said recess with said socket and saidpassage being smaller in diameter than the diameter of said socket to thereby form a shoulder at the inner end of said socket, an axially apertured nozzle member formed with a body engaging in said socket against said shoulder and also with a reduced nozzle at its outer. end, the inner end of said nozzle member having an inverted conical recess confronting said 4passage with the largest diameter oi' said conical recess equal in diameter i to the diameter of said passage, the axial aperture of said nozzle member terminating outwardly of said conical recess, said nozzle member having a cylindrical passage communicating said conical recess with said axial aperture, and said-

Images