US1447593A - macklind - Google Patents

Description

W. R. MACKLIND Mar. 6, 1923.

FURNACE 2 sheatswnee t 1 Filed. Jan. 24, 1920 WM 2. MA cm. 1191;:

.2 Y E m N N v s V W... m A 1 0% Mar. 6,1923.

- w. R. MACKLIND FURNACE Filed Jan. 24, 1920 2 sheets-shee t 2 //v VENTOB WMBMAcIrLI/VD 'ATTNEY Patented Mar. 6, 1923.

sar s PATENT OFFICE.

WILLIAM R. MACKLIND, or CHICAGO, ILLINOIS.

, FURNACE.

Annfication filed January 24, 1920. Serial No. 353,706. I

, T 0 aZZ whom it mag concern: I

Be it known that 1, Human R. MACK- LIND, a citizen of the United States, residing at Chicago, in the county of Cook and State of illinols, have invented certain new" and useful improvements 1n Furnaces, of

which the following is a specification.

My invention relates to improvements infurnaces, and more particularly to that class or type known as continuous rotary furnaces, the present embodiment being also of the muiiie furnace type, and being particularly designed and adapted for treat A further and very important'object of the invention is the provision of an im proved rotary continuously operating muffle furnace having ,an improved rotary drum or cylinder provided with an improved axially located treating tube projecting from the ends thereof and having improved heat creating and discharging heads independently supported and movable toward and from the ends of said rotary drum'and surrounding the ends of said projecting tube, together with improved means ofhermetically sealing the joints between the ends of the rotary drum and heads and between the latter and the receiving and discharging ends of the treating tube.

A. still further object is the provision of material feeding and discharging compartments or chambers provided with improved material feeding and dischargingmecha nism communicating with the feed and discharge port-ions of treating tube'independently of said rotary drum and heat creating and discharging heads and adapted when filled with material and in operation to hermetically seal the opening or treating chamber in said treating tube, this being of par .icular importance in the treatment of luhopoue so that the latter may be kept free from oxygen during treatment.

A still further object is the provision of a furnace wherein the material being treated may be subjected to any desired temperature and such temperature readily regulated and controlled, as well as indicated through the medium of an improved pyrometer tube at the discharge end of the axial treating tube and provided with a yrometer recording dial.

A still further object is. the provision of improved heat insulated heat creating and discharging heads mounted independently of the rotary drum and treating tube and divided longitudinally at their center whereby the same may be readily taken apart for inspection, repair, or the like.

.A still further object is the provision of improved material. feeding mechanism at the ends of the material treating tube, together with inproved means of inspecting the material therein while being treated.

With the above mentioned and other ends in view, the invention consists in the novel construction, arrangement and combination of parts, illustrated in one of its embodiments in the accompanying drawings, and particularly pointed out in the appended claims.

, Referring to the drawings, forming w part of this specification, Figure 1, is a central longitudinal sectional view of a furnace constructed in accordance with this invention.

Fig. 2, a cross sectional view taken on line 2-2 of Fig. 1.

s Fig. 3, a cross sectional view taken on line 33 of Fig. 1.

Fig. 4. a cross sectional view taken on line 4-4: of Fig. 1.

Fig. 5, a top plan view of the improved furnace.

Fig. 6, an enlarged detail view of the joint between the heat transmitting elements or sections making up the improved axial treating tube in the rotary drum.

Fig. 7. a fragmentary cross sectional view of the receiving end of the treating tube and illustrating the manner of securing the outer heat transmitting elements to the tubular reinforcing member of the treating tubeabove the combustion chamber of the furnace head.

Fig. 8, a fragmentary perspective View of the drum flues and battle members of the improved rotary drum.

Similar numerals of reference designate like parts throughout all the figures of the drawings.

The improved furnace comprises a rotary drum or cylinder 1, made up of a surrounding shell of protecting material 1, and a plurality of heat resisting elements 1", separated by means of battle elements 1 and supporting elements 1, forming longitudinal flues 1, and interposed passages 1 adapted to give the heat or products of combustion a zigzag course, as hereinafter eX- plained.

The rotary drum or cylinder 1, is provided with an axial treating tube 2, having *eiving and discharging ends extending or projecting beyond the ends of the drum or cylinder 1.

The bailie elements 1 and fines 1, are adapted to be cleaned through the medium of clean-out openings 1", closedby means of suitable caps or covers 1 The receiving end of the axiali treating.

vided with inner and outer heat transmitting elements 2.

The intermediate or main body portion of the tube 2, is preferably made up of abutting tubular sections 2 said sections 2 as likewise the elements 2*, 2 and 2, being preferably formed of tire brick or other good heat conducting; material.

:lkS a means of independently supporting and driving the rotary drum 1, and the treating tube 2, and also mounting the same in a slightly inclined manner from theteed to the discharge end thereof, the drum or cylinder 1, is provided with circular or ring track members 3, adapted to ride upon and be supported by pairs oiguide rollers or wheels 4, the latter being carried by shafts 5, and the shafts 5, being supported in, bearings 5?. resting on supportsfi".

As a means of driving the rotary drum, the latter is provided with a gear ring: 6. meshing with a- ;rear wheel 7, the latter being mounted on one of the shafts 5, and receiving): its motion from a second ,QQfll wheel 8. tl e gear wheel. 8. receiving: its motion .i 111 a shaft driven from a suitable motor 10, i

As means of generating; and passing a ,suitablehe fluid thri l the drum or cyliniiler L about the tub. treat i her during the rota i and said drunr heat creating: and dischargiiroh d5 11 and 12, respectively, are mounted at the ends ot the revolving drum and independently ot' the latter, and as a means of permitting of the ready opening and closing of the drum ends for inspection or. repair of the latter, as likewise for the inspeo tion and repair of the treating tube 2, the heads 11 and 12 are longitudinally movable toward and from the ends of the drum 1, by being independently supported, said supporting means, in the present instance, comprising supports 11 and 12f, respectively, slidab'le on the main support 13, which latter is also adapt-ed to support the working" parts of the drum or cylinder 1, and the feeding and discharging members or compartments, hereinafter referred to.

The heat creating and discharging" heads 11 and 12, respectively, are provided with openings 11 and 12 respectively, adapted to loosely receive and contain the project ing' ends 01 the treating,- tube 2.

The heads 11 and 12, are preferably surrounded by means of heat insulating material 11 and 12, respectively, and the latter is preferably covered with a metallic coveringll and 12 as shown most clearly in Fig. 2 of the drawings.

As a means of separating the heads 11 and 12, transversely, for inspection or repair of the parts, said heads are divided centrally and longitudinally, as at lei, said parts being adapted to be detachably held together by means of the flange members 1 1, and any suitable and convenient attaching elements.

The heat creating or generating head 11, is provided with a suitable combustion 11 the products of combustion being adapted to pass upwardly from such chamber 11. and through the fines 1, being diverted by the bathe elements 1, to take a somewhat Zigzag course and passing" outwardly into the discharge chamber 12, ot the heat discharging head 12.

The heating fluid is adapted to pass out of the heat fine 15, and may be controlled by means of the damper 15 As a means of hermetically sealing the joints between the ends ot the drum or cvlin der 1, and the heads 11 and 12, the latter are provided with annular seal plates 16. adapt ed to resiliently contact with and bear against annular drum seal flanges or wear plates 17.

As a means of similarly sealing the openings 11 and 12", around the receiving: and. discharging ends o the treating tube the tubular teed extensions 2 of the trea tube 2, areprovided with si n seal plates 18,

means of conveniently 1533C: material. such for example-as iopone. to and from the feel and dischai 0 ends of the treating: tube 2 suitable material teedand d ischarging members or receptacles 19 and 20, respectively, are COIlUO-"tfl'tfi the extensions 2% of the treating; tube. the teedine' receptacle 19, in the present instance. forming a storage bin or chamber, the latter being supplied by means of a teed pipe 19 is provided at its end with a cap 23, and by removing the latter the condition of the material being operated upon 111 the treating'tube 2, may be observed.

As a means of discharging the material from the discharge end of the treating tube the latter is provided with a discharging screw 24, mounted one tubularmember 24*, the latter extendingthrough the discharginn; member or receptacle 20, and being adapted to be driven by a suitable pulley 25. The tubular member 2 1, may be opened. and closed by means of a cap 26, and'as means of determining the temperature within the treating tube the tubular member 24', is provided with a pyrometer tube 27, having a suitable connection with a pyrometer recording dial 528. The discharging recep tacle or housing 20, is provided, in the present instance, wlth a flue or staclr'29, pro

vided with a damper or valve 29, for the control of the gases arising from the discharging; material lnto the chamber of the discharge receptacle 20.

charged by means of a screw 31, operating on a vertical shaft 32, the latter extending through a cone shaped quenching tank The shaft 32, is provided with an agitator 3e, operatingin the water in the uenching tank 33 in order to keep the material in a flowing condition, the water being per1nitted to pass out through the overflow pipe and thus being prevented from arising by means of the submerged bailie 36. As a means of discharging the material through the discharge openings 37, the e2;- treme lower end or the shaft 32,1is provided. with a screw 38, the shaft receivingits motion through bevel gears 39, one of the latter being; connected to a shaft 40, and beinn" driven by a pulley 41.

The top of the quenching tank 33, is pro tube and sealing the latter As a means of hermetically sealing the the latter with vided with vent pipes 42, and the tank 33,

may be filled with water through the medium ot the inlet opening e3.

From the foregoing; description, taken in connection with the accompanying" drawings, the operation and advantages or my invention will be readily understood.

ll-a r ng thus described one of the embodiments of my invention, without having attempted to set forth all the forms in which itniay be made, or all the modes of its use, what 1 claim and desire to secure by Letters Patent, is, l

1. in a furnace, the combination with a rotary drum provided at its ends with annular flange members; of longitudinally diaided heat creating and discharging heads movable transversely toward and from the ends Of"3wld drum and provided with annular s drum, an axial heat transmitting treating tube thereim'means for feeding material into one end of said treating tube, a discharge l ed at the opposite end of said treating tube, and means within said discharge head for discharging the material from said treat with the ma terial discharged. v p l in a muiil furnace, a rotary horizontal drum, an axial heat transmitting treating tube therein, means for feeding material into s id tube, a discharge receptacle provided a chamber at the opposite .end of s id tube, and means within said cham- "for discharbing the material from the drum, an axial heat transmitting treating rtube therein, a feed mechanism discharging the material into said treatingtube, a discharge head teed hopperprovided with provided with chamber communicating with the discharge. end of said treating tube, and means for discharging the material from *1 h' lf"ltl l l' me a so arge one 0 sale 11 1e (.nc sea m the material being: dis charged.

; to receiving and discharging ends provided wish tubular metallic reinforce ments and inner and outer heat transmit ing elements, and its intermediate portions made a plurality of abutting tubular heat transmitti- 1 sections.

6,. In a turnac the combination with y drum provided with h insulated ro dues and battles and a central treating tube;

of longitudinally divided heat creating and discharging heads including sections movable transversely to open and close the ends of said drum provided with annular sealing members slidablyand resiliently? a "furnace, treating tube nally split transversely movable two-part heat creating and discharging heads surrounding the projecting ends of said treating tube and movable toward and from the ends of said treating tube and rotary drum I to seal and unseal the same.

8. in a furnace, the combination with a heat insulated rotary drum provided with an axial treating tube having its ends projecting from the ends of said drum; of twopart heat creating and discharging heads including sections transversely movable toward and from the ends of said drum and surrounding the ends of said tube, the ports of said twopart headsbeing detachably connected longitudinally for movement toward and from each other relative to said treating tube ends independently of said movements toward and from said drum ends.

9. A furnace, comprising a rotary horizontal drum, an axial treating tube therein and projecting from the ends thereof, a two-part head provided with a combustion and heating chamber at one end of said tube and drum adapted to pass the products of combustion through said drum and about said treating tube, means for feeding material into said tube independently of said movable head, a movable heat discharge head at the opposite end of said tube and drum, and means for discharging material from the discharge end of said tube.

10. A furnace, comprising a rotary horizontally inclined drum, an axial heat transmitting treating tube therein and projecting therefrom; a movable head provided with a combustion chamber surrounding said tube and adapted to pass the products of combustion through said drum and about said treating tube, means for feeding material into said tube and sealing the latter with the feeding material, a discharge chamber at the opposite end of said tube and provided with a quenching chamber, and means for discharging material from the discharge end of said tube into said discharge chamber and from the latter into said quenching chamber.

11. In a muflie furnace, a rotary horizontal dunn provided with fiues and hal des and an .l treating tube therein'and project ii tnerefrom, an insulated head provided w, to a combustion chamber surrounding said tube and divided into sections transversely movable to close and seal said drum and pass the products of combustion through said flues'and over said treating tube, a feed hopper provided with a mechanism discharging material into and hermetically sealing said treating tube, a second insulated head surrounding the opposite end of said treating tube and receiving the products of combustion from said drum, and discharge and muffle chambers communicating with said treating tube and sealing the latter with the material being discharged.

12. In a muffle furnace, a rotary horizontal drum provided with longitudinally eX- tending flues and transversely extending baffles, an axial treating tube therein and projecting from opposite ends thereof, a head provided with a combustion chamber surrounding said tube and divided into sections transversely movable toward and from said drum and adapted to pass the products of combustion through said fines and about said treating tube, a feed hopper in front of said head and provided with a feed screw discharging the material into said treatin tube, a second head at the opposite end 0' said drum and surrounding said treating tube to receive the products of combustion therefrom, and a. discharge chamber communicating with the discharge end of said treating tube and adapted to seal the latter when filled with material.

13. in a muflle furnace, a rotary horizontal drum, an axial heat transmitting treating; tube therein, a head provided with a combustion chamber surrounding said tube and adapted to pass the products of combustion thru said drum and about said treating tube, a feed hopper in front of said head and provided with feed mechanism discharging the material into said treating tube, a

discharge head provided with a chamber g with the discharge end of said treating tube, and means for discharging the material from the discharge end of said tube and sealing the latter with the material being discharged.

14. A muffle furnace, comprising a rotary horizontal drum, an axial heat transmitting treating tube therein and projecting therefrom, a. head provided with a combustion chamber surrounding said tube and adapted to pass the products of combustion thru said drum and over said treating tube, means for feeding material into said tube, a second head surrounding the opposite end of said treating tube, a discharge receptacle provided with a chamber at the opposite end of said treating tube, and means within said chamber for discharging the material from thedischarge end of said treatingtube and sealing the latter with the material being discharged.

In testimony whereof I have afiixed my signature.

WILLIAM R. MACKLIND.

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