US2875527A - Dryer stationary syphon - Google Patents

Description

March 3, 1959 A. DAANE 2 DRYER STATIONARY SYPHON Filed April 24, 1957 4 Sheets-Sheet 1 ROBERT A. DAANE BY (4% v I AT%RNEYS March 3, 1959 R. A. DAANE 3 1 I DRYER STATIONARY SYPHON Filed Aplil 24, 1957 4 Sheets-Sheet 2 INVENTOR. ROBERT A. DAANE AT RN EYS INVENTOR.

4 Sheets-Sheet 3 March 3, 1959 R. A. DAANE DRYER STATIONARY SYPHON Filed April 24, 1957 ROBERT A. DAANE ATTORNEYS March 3, 1959 R. A. DAAN; 2,875,527

' DRYER STATIONARY SYPHON Filed April 24, 1957 v 4 Sheets-Sheet 4 27 J26 1E7 &

INVENTOR ROBERT A. DAANE BY w 10; by

A OPNEYS United States Patent DRYER STATIONARY SYPHON Robert A. Daane, Beloit, Wis., assignor to Beloit Iron t Works, Beloit, Wis., a corporation of Wisconsin Application April 24, 1957, Serial No. 654,917

9 Claims. (Cl. 34124) the water which accumulates in the drum is not efliciently removed. The thickness of the water film on the inside of a rotating dryer depends on the thickness of the layer at the syphon entry. The control of the thickness of the film in present day syphons is accomplished by an increase in the amount of steam blown through the dryer to the condensateheader. The dippers which are usually employed for picking up, or scooping, the water in the drum are not suitably designed to be adjustably spaced in close contact adjacent the inside surface and are usually secured directly thereto and referred to as rotating siphon dippers. With the usual designs, it is not practical to accurately control the position of the syphon entry with respect to the drying shell wall. For this reason, the amount of steam blown through the dryer in order to evacuate the dryer is not predictable. The removal of water depends on the difference in pressure within the dryer and the pressure in the drainage header. When the pressure difference is too small the dryer will flood with condensate. When the pressure difference is too great, then a considerable amount of steam is wasted. In dryers with rotating syphons an additional pressure drop occurs due to centrifugal forces and at current high speeds it is practically impossible to remove the condensate as water, it must be entrained with the blow through steam. Even though it is desirable to have some blow through of steam to remove accumulation of air and other noncondensables in the dryer, undue waste must be avoided. The unnecessary use of steam also renders the control of the succeeding series of dryers in cascade much more diflicult. Further, since a condenser or heat exchanger normally follows the final condensing stage, if too much steam is blown through the dryer the condenser itself may be flooded or overloaded. Since it is normal at a single location to pipe steam to dryers arranged in parallel, the undesirable condition of a single dryer out of control may thus influence adversely the elficient function of several other dryers connected therewith. The proper choice of the diflerential pressure referred to depends upon a number of factors with either rotating or stationary syphons, such as restrictions to flow, speed of web, rate of condensate formation, initial steam pressure, condition of dryer, and quantity of water within the dryer when set in operation. The present invention aims to overcome this serious condition by providing an effective operating liquid removal device having a stationary syphon pipe with an orifice constructed and arranged to permit the heating medium to be effective directly upon the entire interior surface of the drum by removing substantially all of the liquid condensed in the drum.

It is one of the principal objects of this invention to 2,875,527 Patented Mar. 3, 1959 provide a dryer embodying a stationary syphon tube with adjustable means therewith, the tube capable of removing water at any necessary rate of formation with relatively small pressure drop in slow speed machines, and eliminate the centrifugal force opposing removal of condensate as liquid in high speed machines distinguished by the occurrence of rimming.

Also, it is one of the principal objects of this invention to simplify the construction of a fluid removing device such as contemplated herein, which can be serviced without stopping the dryer and where the clearance between the tip end of the syphon pipe and the inner wall of the dryer can be precisely adjusted from the outside of the dryer even while the dryer is running, thereby improving the efliciency, operation and dependability of such fluid removing device.

Also, it is a principal object to provide a liquid removing device embodying an elbow supporting mount permitting a syphon elbow to be pivotally assembled therewith and adjusted relative thereto for raising and lowering the syphon pipe orifice adjacent the inner surface of the drum without opening the dryer manhole, or waiting for the dryer to cool off.

Another object is to provide a fluid removing device which can be rigidly supported by suitable means outside the drum, and to disassemble the device, the central axial drainage tube is unscrewed from the pipe threads in the syphon elbow, which permits the radial syphon tube embodied therewith to swivel about its pintles in slots within the elbow mount whereby the entire assembly can be withdrawn through the journal thereof, and to reassemble, the support tube is entered through the journal with the pivoted syphon tube extending along the axis of the support tube 19 and with the support tube turned with respect to the normal operating position. The radial tube is then pivoted upwardly into a position perpendicular with the support tube axis by means of cords looped around the radial syphon tube, or elbow, at appropriate points and extending through the support tube to the outside thereof where they can be manipulated externally. The cords are removed from the assembly after the axial drainage tube is screwed into the syphon elbow. The syphon assembly is then rotated about the axis of the supporting tube so that the radial syphon tube comes to a position extending downwardly which is optimum for most eificient water removal.

A further object of this invention is to provide a fluid removal device with a pick up assembly for a fluid removal device that is effective to remove the condensate liquid regardless of the rotating speed of the drum, where steam is introduced through the supporting outside tube and into the dryer through holes drilled at the inner end of that tube, the condensate being picked up from the water layer at the dryer wall and forced out through the stationary syphon tube by the pressure diflerence existing between the steam supply line and the condensate header in the conventional manner.

Another object of this invention is to provide a fluid removal device providing means of holding the syphon tube accurately with respect to the dryer shell wall, without the necessity for precise tolerances; a stationary syphon which can be removed from or assembled in an operating dryer without the stopping of the dryer, and a syphon part which may be positioned to suit the location of the puddle in a dryer which is operating at a speed such that rimming does not occur but tends to shift the pool of condensate to a position above the bottom.

It is a further object of this invention to provide a fluid removal device providing means for controlling the outside temperature of the dryer by using a higher steam pressure with the increased water film, the precisely adjusted position of the syphon tube orifice away from the 59 inner wall of the dryer furnishing a means of controlling the residual water layer inside the dryer thereby furnishing an insulating barrier to reduce the outside temperature of the dryer.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

As shown on the drawings:

Fig. 1 is a fragmentary longitudinal schematic view of a dryer drum for a paper machine, parts removed, and disclosing the instrumentalities of the present invention installed therewith;

Fig. 2 is an enlarged scale, fragmentary, sectional view taken on a diametral plane through the supporting tube, the end of the drying drum'and elements assembled therewith;

Fig. 3 is an enlarged scale, fragmentary, sectional view through a portion of the drying drum, the end portion of the supporting tube, the syphon tube and associated elements associated therewith, the arrangement of parts being exaggerted and showing the anguler change thereof resulting from an extreme adjustment;

Fig. 4 is a fragmentary, sectional view showing the syphon tube raised into axial alignment with the supporting tube, said syphon tube and supporting tube turned from normal position, the syphon tube shown by solid lines turned 90 from the normal position and shown by dotted lines turned 180 from the normal position.

Fig. 5 is a fragmentary, sectional view showing the condensate tube assembled to the supporting tube and with the adjustable and locking means associated therewith;

Fig. 6 is a fragmentary, sectional view showing the syphon tube in a vertical raised position and assembled with the supporting tube, said supporting tube turned 180 from normal position;

Fig. 7 is'a side elevation of the syphon elbow mount with its cylindrical wall broken away and disclosing the interior configuration thereof;

Fig. 8 is a top plan view of the syphon elbow mount with its cylindrical wall broken away and disclosing the interior configuration thereof;

Fig. 9 is an end elevational view of the syphon elbow mount looking in the direction of the arrows 99 of Fig. 7.

Fig. 10 is a vertical sectional view taken through the syphon elbow with its associated pintles assembled therewith.

The drawings are to be understood as being more or less of a schematic character for the purpose of disclosing a typical or preferred form of the improvement contemplated herein.

The drum shown herein a dryer drum of a paper making machine that comprises a hollow cylindrical wall 12, to the ends of which end walls 13 are secured in any suitable manner. Said end walls 13 forming a journal 14 having an axially extending axle portion 15. The journal 'is provided with an axially extending bore 16 and an enlarged countersunk core recess 17 concentric with the bore 16 and opening toward the interior space defined by the interior of the drum. A similar end wall and journal is similarly secured to the opposite end of the drum, but with no axially extending bore.

The bore 16 of the journal 14 receives a pair of concentric conduits, namely, supporting tube 18 functioning as a steam inlet pipe to the drum and a nesting condensate drain pipe 19 extending axially therethrough. The supporting tube 18 is held in a horizontal position by being supported in a cantilever manner from the mounting bracket ltlwhich is attached to the bracket 21 which in turn is attached to the dryer bearing housing 22. i

A syphon elbow mount 23 is mounted and secured to the terminal end portion of the supporting tube '18 extending into the interior of the drum 1 2. The mount 23, shown specifically by Figs. 2, 3, 4, 6, 7 and 8 comprises a cylindrically wall portion 25 with a core recess 26 and aperture 27 in one end thereof, a flange 28 intermediate its ends and two substantially rectangular, horizontally spaced, checking piece support members 29 and 30. Each cheek piece is provided with a diagonal slot 31 extending upwardly toward flange 28. The mount 23 is rigidly secured to said supporting shaft 18 by set screws 32 extending through the wall of said supporting tube 18 into the cylindrical wall portion 25 of the mount 23. Said cheek pieces 29 and 30 provide vertical supporting members for the syphon elbow 33 clearly shown by Figs. 2, 3, 4 and 9. The elbow 33 is substantially a block with a fiat top, bottom and side walls, and being square in cross-section. Said elbow includes a central bored section 34 extending longitudinally therewith, which permanently receives the corresponding end of the syphon pipe 35. One side wall of said elbow includes an interiorly threaded recess 37 receivinga correspondingly threaded end 24 of the condensate drain pipe 19 and communicating with the condensate chamber 38. The condensate chamber 38 communicates with the interior of the dryer drum through an orifice 39 at the end of the syphonpipe 35. The elbow 33 carries in its side flanks a pintle 40 which extends outwardly therefrom to engage the diagonal slots 31 in elbow mount cheek piece sup porting members 29 and 30.

The radial syphon pipe 35 is held in stationary position in the dryer as it is suspended from the syphon elbow 33 which in turn is pin mounted to the syphon elbow mount cheeks 29 and 30, the pins 40 being fixed in the syphon elbow 33 but free to slide in the inclined slots 31 in the syphon elbow mount cheeks. The syphon pipe 35 is free to pivot about the axis of the aforementioned mounting pins 40 for the purpose of assembly. In assembly of the syphon pipe 35 and associated parts, the supporting tube 18 -is turned 180 about its horizontal axis, the tube 35 is horizontally positioned with its axis parallel to that of the supporting tube 18, the slanting surface portion of the elbow 33 resting upon a supporting member 70, as shown by Fig. 4. A cord, or tape 71 is passed into the open end of the support tube 18, then out the opening 66 and around the radial syphon tube 35 adjacent the elbow 33 and back through the opening 66 into the support tube 18 and out the free end thereof. By the manipulation of said cord 71, the radial syphon tube is pulled upwardly into right angular position and resting in contact with the stop 72, as clearly shown by Fig. 6. The support 70 is welded to and'secured between the cheeks 29 and 30 and forms a stop, and/or support, for holding the elbow 33 and tube 35 in a horizontal position. The stop 72 is secured between the cheeks 29 and 30 to provide stopping means for said elbow 33 when drawn into a vertical position by said cord 71 clearly shown by Figure 6. By retaining said-elbow 33 in a fixed vertical position by said cord, the threaded end 24 of the condensate tube 19 may be inserted, or threaded, into the threaded recess 37 of the elbow 33-. After the tube 19 is in the desired position the cord is removed by pulling upon one end thereof allowing the second end to be free. Once in place within the drum 12, the support tube 18 and assembly is turned 180 to normal operating position which permits the tube 35 to drop into a vertical position, the elbow 33'resting-against the stop 72 as shown by Figure 2. The tube 19 may be inserted into elbow 33 when the tube 35is in a downwardly extending position, however the above method is preferred. The clearance between the tip end of the syphon tube 35 and the dryer shell wall 12 is then precisely adjusted to the desired clearance by positioning tube 19 and elbow 33 withthe adjustment slots 31 in cheeks 29 and 30. For disassembly, the syphon assembly is first turned about the tube axis so that the radial syphon axial drainage tube 19 is unscrewed, and the radial syphon tube will fall to the desired position of axial alignment with the supporting tube. Then the whole assembly can'be withdrawn through the dryer journal.

The syphon tube 35 and supporting tube 18 are supported by bracket 21 cantilevered from bearing housing 22. The syphon pipe 35 is held against rotation with the dryer by being mounted with relatively small clearances between the cheeks 29 and 30 of the syphon elbow mount which is securely fixed to the end of the supporting tube 18 by setscrews 32.

The radial syphon pipe by virtue of being pin mounted in the inclined slots 31, may be accurately positioned with respect to the proximity of the lower end of the syphon tip and orifice 39 with the inside surface of the dryer shell 12 by means of axial movement of the horizontal drain pipe 19, The drain pipe extends beyond the exterior open end of the supporting pipe 18.

The end of the supporting pipe 18 is closed by a capping member having a central bore 46 to receive a bushing 47 centrally bored to receive the drain pipe 19. A, packing ring 48 is positioned around said pipe 19 and pressed into sealing engagement with the pipe by means of internally threaded capping member 49 centrally bored to allow pipe 19 to pass therethrough. The capping member 45 has a cylindrical extension 50 welded thereto and extending rearwardly in axial alignment with the drain pipe 19. The open end of said extension is internally threaded to receive a cup shaped adjusting screw 51 having external threads thereon. The vertical end portion of said screw 51 is centrally apertured to receive a flanged collar member welded to the exterior surface of the pipe 19. Said collar is exteriorly threaded to receive locking nuts 53 and 54 positioned thereon. By rotation of said adjusting screw 51, the drain pipe 19 is moved axially therewith. When the adjusting screw 51 is stationary, the pipe 19 is locked against further horizontal movement by means of lock nuts 53 and 54 pressing the vertical end portion of the adjusting screw 51 against the flange extending upwardly from the flange collar welded to said pipe 19. The syphon pipe is shown in normal position close to the inside surface of the drum by Fig. 2. The syphon pipe is shown raised from the inside surface of the drum in an exaggerated manner by Fig. 3. The assembly of parts therefore becomes an adjustable syphoning means and when once locked in place, produces a stationary syphon tube 35 workable in a revolving drum.

In order to seal the dryer drum and prevent the high pressure steam from escaping through journal 14, and along the exterior of the supporting tube 18, a standard type carbon ring steam fit seal 60 is provided. A ring 61 is welded to the stationary supporting tube and the carbon ring-62 is positioned adjacent thereto in combination with the usual bellows type unit 63 embodied in said type of seal.

In operation, the live steam, or heating. medium, is introduced into the supporting tube 18 through a pipe 65 from a suitable source and into the drum through holes 66 drilled at the inner end of the tube positioned within the drum. The end of the supporting tube within the journal 14 is in sealed relation with respect to said journal to prevent escape of steam. The steam passes thence into the axle section and is discharged into the drum through said openings 66. The condensate is picked up from the water layer adjacent the dryer wall and forced out through the syphon by the pressure ditference existing between the steam supply line and the condensate header in the conventional manner.

The fluid pick-up orifice is located in the lower end of the radial stationary syphon tube, and after the fluid passes through the drain pipe 19 it is discharged through conduit 67 to any suitable means. It will be seen that the entire structure of the syphon tube assembled with the drain pipe is maintained in spaced relation to the inner surface of the cylindrical drum 12 so that there will be no interference with the heating of the drum surface by the steam or other heating medium with which the drum is charged and consequently the outer surface of said drum will be maintained at a uniform drying temperature throughout its entire surface. The orifice at the end of the syphon tube can be positioned. close enough to the drum to drain up the film of liquid that is created on the adjacent drum surface during high rotational speed, or low rotational speeds. The amount of clearance between the end of the syphon pipe and the inner wall of the dryer can be precisely adjusted from the outside of the dryer even while the dryer is running. The controlling of the depth of the residual water layer inside the dryer wall may be used to reduce the outside temperature of the dryer and the heat transfer therethrough. By using higher steam pressure with increased water film, it is possible to control the surface temperature suitable to a lightweight sheet of paper, avoiding the problem of evacuating the dryer to a high vacuum. The structure presents a novel stationary syphon for controlling the depth of the liquid rim which is an inherent condition in a high speed paper making machine common today. The significant advantage of applicants stationary syphon is that it can be serviced and the amount of clearance between the end of the pipe and the inner surface of the drum can be precisely adjusted from the outside of the dryer in a short period of time and with a minimum interference with the operation of the paper machine even while the dryer is running.

It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention.

I claim as my invention:

1. In combination with a dryer drum including a cylindrical shell and a head closing each open end of the shell, the improvements. of rigid concentric steam inlet and condensate drainage conduits projecting axially through one of said heads into the interior of said shells, the rigid drainage conduit extending through the interior of said steam inlet conduit, a syphon elbow mount secured to the end of said steam conduit, a syphon elbow pivotally secured to said elbow mount said drainage conduit rigidly connected to said elbow, a rigid radial syphon tube having an orifice at one end rigidly connected at the other end to said elbow and arranged radially with respect to said cylinder, means exterior of the cylindrical shell for adjusting the location of said drainage tube relative to said steam inlet conduit, the orifice of the free end of the said syphon tube in close proximity to the inside surface of said cylinder shell, the .inlet passage of said syphon tube coacting with the inner surface of the shell to define a passageway accommodating flow of fluid between the syphon tip and the inner surface of the shell to said drainage conduit.

2. In combination with a paper machine dryer drum which comprises a cylindrical shell, and heads on said shell, one of said heads being centrally apertured, concentric steam and condensate conduits extending through the aperture in one of said heads, the rigid drainage conduit extending through the interior of said steam inlet conduit, a syphon elbow mount rigidly secured to the end of said steam conduit extending within said dryer drum, a plurality of diagonal slots arranged in said elbow mount, a hollow syphon elbox embodying a plurality of pintles pivotally secured to said mount by having its pintles engaging said diagonal slots in said mount,the inner end of said condensate conduit extening Within said dryer drum rigidly connected to one side of said syphon elbow, a syphon tube having an orifice at one end rigidly connected at the other end to the base of said syphon elbow and arranged radially with respect to said cylinders, the orifice at the free end of said syphon tube in close proximity to the inside surface of said rotatable cylinder, and means exterior of the shell for adjusting and relocat-- 7 tng s'aidnrainage tube relative to said steam conduit, the movement of said drainage tube 'a'ndsaid syphon elbow relative 'td'said syphon elbow mount governing the "space between the orifice at the lower end of said syphon tube and the inner surface of said cylinder.

3. In combination with a paper machine dryer drum which comprises a cylindrical shell, annular end heads on said shell, one of said heads having an axial bore therethrough communicating with the interior of'said shell, concentric steam and condensate conduits extending through the bore of one of said heads, the rigid drainage conduit extending through the interior of said steam inlet conduit, the inner end of said conduits positioned within said shell, the outer ends of said conduits positioned exterior of said shell, a heated fluid supply line connected with the interior of said steam conduit intermediate its ends, a syphon elbow mount secured to the inner end of said steam conduit, a plurality of diagonal slots arranged in said elbow mount, a hollow syphon elbow embodying a plurality of pintles pivotally secured to said mount by having its pintles engaging said diagonal slots in said mount, said condensate conduit rigidly secured to said elbow, a syphon tube having an orifice at one end connected at the other end to the said elbow and in communication with said condensate conduit, said tube radially positioned with respect to said cylindrical shell, the orifice at the'free end of saidsyphon tubein close proximity to the inside surface of said rotatable cylinder, means exterior of the cylinder for axially adjusting the location of said condensate conduit relative to said steam conduit, the'axial movement of said syphon elbow relative to said syphon elbow mount governing the space between the orifice at the lower end of said syphon tube and the inner surface of said cylinder.

4. In combination with a rotatable cylinder having and heads, and means for introducing a heated fluid into said cylinder comprising a supporting tube extending horizontally through one head and into said cylinder, a heated fluid supply line having exhaust ports, said supply line being connected with the interior of the outer end of said supporting tube to convey heated fluid out of said exhaust ports in the inner end of said tube to said drum, a fluid removing device for draining condensate fluid from the cylinder comprising a drainage tube mounted within and extending through said supporting tube, a syphon elbow mount embodying spaced parallel cheeks with diagonal slots therein secured to the end'of said supporting tube, a plurality of pintles pivotally securing a syphon elbow to said slots in said elbow mount, said drainage tube rigidly connected to said elbow, a syphon tube having an orifice at one end rigidly connected at the other end to said elbow and arranged rigidly to the end of said cylinder, the orifice at the free end of said syphon tube in close proximity to the inside surface of said rotatable cylinder, means exterior of the cylinder for adjusting the axial location of said drainage tube relative to said supporting tube, the pintles of said syphon elbow extending outwardly and into engagement with the diagonal slots in said syphon elbow mount, whereby the movement of said syphon elbow relative to said syphon elbow mount governs the space between the orifice at the lower end of said syphon tube and the inner surface of said cylinder, and whereby condensate is removed through the syphon tube by the pressure difference existing between the heated fluid supply line and the drainage tube.

5. In a heating drum construction which comprises a hollow drum, a hollow journal on one end of the drum, a bearing rotatably supporting said journal, a rigid heating fluid supply pipe extending through said journal for feeding heating fluid to the interior of the drum, a rigid heating fluid removal pipe extending through said heating pipe for removing fluid from the interior of the drum, said fluid removal pipe having a syphon elbow rigidly secured to the free end thereof, a bifuracated elbow mount with parallel cheeks rigidly secured to the free end of *said fluid supply pipe, diagonal slot's in the checks of said bifurcated elbow inount, a pair of pintles extending outwardly from said elbow and assembled within said slots in the checks of said elbow mount, a rigid syphon leg secured to said elbow in said drum, and means accessible from the outside of said journal for shifting said rigid syphon leg and said pintles in said slots to selectively fix the distance between the free end of the leg and internal periphery of the drum to thereby regulate the amount of fluid remaining in the drum.

6. In combination with a rotatable cylinder having end heads, an adjustable concentric rigid steam inlet conduit, a rigid condensate drainage conduit projecting through said steam inlet conduit, both of said conduit-s projecting axially through one of said heads into the interior or" said cylinder, a'rigid elbow mount with parallel cheeks secured to the free end of said steam conduit pivotally supporting a syphon elbow, said cheeks embodying diagonal slots, said elbow having outwardly extending pintles assembled in said slots, a rigid syphon conduit with'it's free end in non-contacting closely-spaced relation to the interior surface of the cylinder, the upper end of said syphon conduit rigidly connected to said syphon elbow secured to said condensate drainage conduitand having an inlet passage at the free end thereof in closely spaced relation to the inner surface of the cylinder for coacting therewith to define a passageway accommodating flow of fluid between the syphon conduit and the c'ylinder to said drainage conduit, whereby axial movement and adjustment of said drainage conduit with respect to said elbow mount will eflect the clearance between the end of the syphon conduit and the inner wall of said cylinder.

7. In combination with a dryer drum including a cylindrical shell and a head closing each open end of the shell, the improvements of arigid concentric steam inlet conduit, a rigid condensate drainage conduit projecting through said steam inlet conduit, both of said conduits extending axially through one of said heads into the interior of said shell, a syphon elbow mount rigidly secured to the free end of said rigid steam conduit, a syphon elbow rigidly secured to the free end of said rigid condensate drainage conduit, said syphon elbow mount embodying a pair of cheeks with diagonal slots therein, said syphon elbow embodying outwardly extending pintles, said pintles assembled in said diagonal slots to adjustably support said syphon elbow with said elbow mount, arigid radial syphon tube connected to said elbow and arranged radially with respect to said cylinder, the free end of said syphon tube adjustably moved into close proximity to the inside surface of said cylindrical shell by horizontal movement of said drainage conduit and movement of said pintles in said diagonal slots in the elbow mount, the inlet passage of said syphon tube coacting with the inner surface of. the shell to define a passageway accommodating flow of fluid between the syphon tube and the shell to said drainage conduit.

8. In combination with a steam heated rotatable c'ylinder, wherein steam that is introduced therein is adapted to condense and form a puddle of liquid at the bottom thereof at low rotational speeds of the cylinder and form a liquid film on the inner surface of the cylinder at high rotational speeds, a rigid steam conduit for supplying steam to said cylinder, a rigid drainage pipe extending through said steam conduit for removing liquid from the cylinder, a syphon elbow mount secured to theinner end of said steam conduit, a plurality of diagonal slots arranged in said elbow mount, a hollow syphon elbow embodying a plurality of pintles pivotally secured to said mount by having its pintles engaging said diagonal slots in said mount, said syphon elbow embodying a condensate chamber, a stationary syphon pipe rigidly secured to said elbow and in communication with said condensate chamber, whereby condensate is removed through the 9 syphon pipe by the pressure difference existing between the heated fluid supply line and the drainage pipe.

9. Journal construction for heating drums and the like which comprises a hollow heating drum having a hollow journal extending from one end thereof, a heating fluid inlet pipe extending through said hollow journal into the interior of said drum, a fluid return tube extending through said inlet pipe and having a fixed leg rigidly mounted on the inner end thereof in fixed angular relation thereto for extending therefrom into close proximity with the interior of the periphery of the drum, means interposed between the return tube and the inlet pipe and accessible from outside the hollow journal and inlet pipe for shifting said return tube longitudinally of said inlet pipe, and

mounting means on the inner end of said inlet pipe rigidly 15 2,651,114

attached to said inlet pipe and supporting the inner end of said return tube and said leg, said mounting means including means attached to said return tube and cooperating with said mounting means to translate longitudinal shifting movement of the return tube relative to the inlet pipe into movement of said leg toward and away from the inner periphery of the drum.

References Cited in the file of this patent UNITED STATES PATENTS 1,665,614 Valentine Apr. 10, 1928 1,953,525 Young Apr. 3, 1934 2,056,562 Bridge Oct. 6, 1936 2,617,205 Cram Nov. 11, 1952 Hornbostel Sept. 8, 1953

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