Патент USA US2115554код для вставки
@5126, 1938. c. E. HARRISON 2,115,554 ‘RETORT STRUCTURE Filed Sept. 18, 1934 ’ 29 10 3~26c@m, f.MaS .mEu.mi* Han.Ire.Qm? rm. . n 18 1519.5 Patented Apr. 26, 1938 2,115,554 ‘ PATENT oFricE f I 2.115.554 ‘ v ‘ ‘- RETORT STRUCTURE Clifford Harrison, Philadelphia, Pa., assignor to American Engineering Company, Philadel ‘ ‘ phia, Pia, a corporation of Pennsylvania \ 'i ‘ ‘Application September 18, 1934, Serial No. 744,513 "4 Claims. .(Cl. 110-108) This invention relates to ‘retort structures, and’ more particularly ‘to retort structures for under feed stokers. ' i ‘ ' ' ‘ Retort structures of the character set forth C21 ‘usually comprise -a- pair of substantially hori zontal cylinders in which operate the main fuel feeding-ram and the'idistributing pusher, respec tively, ‘a fuel supporting surface, and a hopper from which fuel is‘ supplied to the fuel supporting " surface. During operation of a ‘furnace it ‘often happens that either the ram cylinder or the fuel Fig. ‘4 is a longitudinal sectional view taken substantially on line 4—4 of Fig. 3. Fig. '5 is an enlarged fragmentary View of a portion of the structure shown in Fig. 4. Fig. 6 is a plan View of the hopper portion of 5 the retort structure, with certain parts broken away to show the structure thereof, and also of the wear plates mounted in the hopper. ‘Referring to the drawing, the numeral I desig nates generally the retort structure comprising 10 the present invention which consists of a main supporting portion of the hopper becomes dam-‘ body portion 2, and a main ram cylinder 3. The aged due to the‘ abrasive‘action of the fuel or to “the erosive action thereon‘ caused by the chemi-' “cal elements'of the fuel, and as a result‘ in the older constructions'the entire structure must be body ‘portion 2 comprises an inclined substan tially flat fuel supporting surface ll, which is adapted to be secured to the side plates of a stoker retort, a hopper 5 for receiving the fuel 5 renewed.’ The present invention, however, con to'be fed to the retort, and a forwardly project ing, substantially horizontal cylinder ii for re ram cylinder; and also‘renewable wear plates in ' ceiving a fuel feeding and distributing pusher templates a structure which provides a renewable 20 I the bottom of the hopper so that in the event any (not shown). of these partsshould ‘become damaged’itiis only :Hopper 5 terminates at the bottom thereof in a ‘substantially U-shaped portion 1, having pro necessary to renew the damaged part. " Another object is to provide a generally im proved retort structure which may be used inter 2 changeably with’ those in existing stokers.1 Another object of the invention is to provide wear plates in the bottom of the hopper, which may berenewed through the inlet opening of the 30 ‘hopper while the'stokern is in operation. A further object is ‘to provide an improved re tort structure having a renewable ramcylinder which is soconstructed as to provide a greater bearingv surface for the ram without increasing 35 the overall length of the structure, and without materially decreasing the amount of fuel fed at each stroke of the ram;<.~‘ .1 f > A still further object is to provide an extension 45 on a ram cylinder of the stated character which increases the bearing surface for the ram and. which is so arranged as to be substantially free from the corrosive and erosive action of the fuel. Other and further objects will become apparent as the description of the invention progresses. Of the drawing: Fig. 1 is a perspective View of the retort struc ture comprising the present invention. Fig. 2 is a perspective view of the ram. cylin 50 der associated with the retort structure showing the extension provided thereon. Fig. 3 is a sectional elevational view taken sub , vided therein a similarly shaped recess 8 in which is seated a series of renewable wear plates 9, Ill, H and I2 respectively, as shown in Figs. 3 and 4. 20 5 The wear portion of the hopper 5‘ terminates in a substantially rectangular discharge’ opening I3, whereas the opening at the front end thereof is substantially cylindrical to- conform with the bore of cylinder 3. The front end of body por tion 2 is provided with a ?ange M against which abuts a companion ?ange [5 provided on the left hand end of cylinder 3, and a series of stud ‘bolts l6 extending through these vflanges rigidly se 35 cures cylinder 3 to body portion 2. The upper and inner end of cylinder 3 is provided with a semi-cylindrical extension l? which in assembly extends into the hopper 5, as shown more clearly in Fig. 4. This extension provides additional 40 bearing surface for the ram, and being mounted at the upper end of the cylinder, is not subjected to the abrasive or chemical action. of the fuel. By this construction a greater bearing surface is 5 provided for the ram without increasing the over all length of the retort structure. An improved retort structure has therefore been provided which may be readily interchanged with those in stokers previously constructed. Cylinder 3 has 50 also provided in the lower side thereof a longi tudinal slot l8 through which a portion of the stantially on line 3~~3 of Fig. 4, through the operating mechanism for the ram and pusher ex hopper portion of the retort structure looking tends. Reinforcing ribs |9 extending longitudi nally of cylinder 3 between ?ange l5 and an 55 55 in the direction of the fuel bed. 2 2,115,554 outer flange 20 provide the necessary strength to said cylinder. The side walls 2'1’ and 28 of hopper 5 incline downwardly, while the side walls 23 and 24 of dis charge opening 13 are substantially vertical, as shown more particularly in Fig. 3 of the drawing. The lower portion of the rear wall of the hopper, disposed on either side of discharge opening I3, is substantially vertical and forms with the side 10 walls 21 and 28 of the hopper and the side walls 23 and 24 of the discharge opening a pair of triangular portions 2| and 22. Wear plate 9 is made up in one piece and consists of an-inclined, forwardly extending portion 21', a triangular portion 2!’, and a substantially vertical, rear wardly extending portion 23’, which in assembly lie in abutting relation with wall 21, triangular portion 2|, and wall 23, respectively, as shown in Figs. 3, 4 and 6. Wear plate I2 is similarly 20 constructed and comprises an inclined, forwardly extending portion 28’, a triangular portion 22’, and a rearwardly extending, substantially verti cal portion 24’, which in assembly lie in abutting relation with wall 28, triangular portion 22, and 25 wall 24, respectively. Wear plates 9 and I2 are secured at one end of each to walls 23v and 24, respectively, of discharge opening l3, by bolts 25, and at their other ends to walls 21 and 28, respectively, of hopper 5, by bolts 26. Wear at an angle to each other, and a substantially triangular portion connecting the adjacent ends of said ?at portions. 2. A retort structure for stoker furnaces, com prising an inclined fuel supporting portion, a cylinder integral with said fuel supporting por tion communicating with the interior thereof. and a hopper integral with and disposed for 10 wardly of the upper end of said fuel supporting portion, said hopper having front, rear, and side walls, said side walls inclining downwardly and inwardly and terminating in a substantially arou ate bottom wall, said bottom wall and a portion 15 of said side walls having a recess therein adapted to receive Wear plates, said rear wall having a discharge opening therein communicating with said fuel supporting portion, and a substantially vertical, triangular portion disposed at either side of said discharge opening. 3. In a device of the class described, the com bination of a retort structure, and a ram cylin der detachably secured thereto, said retort struc ture comprising an inclined fuel supporting por tion, a cylinder integral with said fuel support ing portion and communicating with the interior thereof, and a hopper integral with and dis posed forwardly of the upper end of said fuel plates l0 and H are secured to the bottom of supporting portion, said hopper having front, 30 the hopper by bolts 29. Plates 9, 10, II and I2 rear and side walls, said side walls inclining downwardly and inwardly and terminating in a substantially arcuate bottom wall, said bottom wall and a portion of said side walls having a recess provided therein to receive wear plates, 35 and said rear wall having a discharge opening therein communicating with said fuel supporting may be formed of cast iron and chilled so as to present a hard outer surface adapted to with stand the corrosive as well as erosive action of 35 the fuel. These plates may also be constructed of steel or any suitable alloy if it is so desired. In order to renew plate 9, II], II or I2, it is only necessary to remove the fastening bolts and ex tract the plates through the inlet opening of the 40 hopper. New plates may then be set in place and then bolted in position. Such renewals ob viously may be readily made even while the stoker is in operation. As shown more particularly in Fig. 5, the wear 45 plates are at all times out of contact with the ram, and therefore do not in any manner consti tute a support therefor. The ram is supported entirely by the ram cylinder 3. While the embodiment herein shown and de 50 scribed is admirably adapted to ful?ll the ob jects primarily stated, it is to be understood that the invention may be embodied in other forms, all coming within the scope of claims which 55 plate consisting of a pair of substantially ?at portions arranged in offset spaced relation and follow. What is claimed is: l. A new and useful article of manufacture comprising a wear plate for hoppers, said wear portion, and a substantially vertical triangular portion disposed at either side of said discharge opening. . 40 4. A ram cylinder adapted for attachment to the front end of a retort structure, having a, longitudinal slot provided at the lower side there of, a transversely disposed ?ange provided at one end of said cylinder having bolt receiving 45 recess therein, a second transversely disposed ?ange provided at the other end of said cylinder, reinforcing ribs extending between said ?anges, and a substantially semi‘circular projection in tegral with the upper portion of said cylinder and 60 extending longitudinally from said ?rst men tioned ?ange, the inner surface of said semi circular projection forming an extension of the inner surface of said cylinder, thereby providing an extended bearing surface for the ram. CLIFFORD E'. HARRISON.